baber/WOPTO huggingface dataset:
Patent GB-630991-A (GB)
Title: Improvements in radio-receivers with band-spreading
IPC: H03J3/10
Filed: 1947-02-13
Abstract: 630,991. Radio receiving circuits. PHILIPS LAMPS, Ltd. Feb. 13, 1947, No. 4172. Con.- vention date, March 16, 1944. [Class 40 (v)] In a radio receiver one or more short - wave ranges are partly bandspread as by connecting fixed reactances in series and in parallel with the main tuning reactance, and coupling an auxiliary tuning reactance to the main tuning reactance, so that each partly bandspread range contains two bands that are spread the remainder of the range not being spread, and one or more other ranges have no bandspreading. In the ranges with bandspreading, an auxiliary inductance 4, Fig. 1, with a movable core 5, may be ganged to the tuning condenser 1 so that it is varied in the opposite sense when bandspreading is required and in the same sense at other points to obtain the curve a, Fig. 2, which shows the variation of the product LC with the displacement alpha of the tuning pointer, the short-wave bands I and II being spread on the scale parts B and D respectively. B<1> and D on curve b show the corresponding variation when the inductance of coil 4 is kept constant. The auxiliary inductance may be varied to give a steeper slope in the parts A and E as shown by curve c. In an alternative arrangement an auxiliary condenser ganged to the main tuning condenser is used in place of the auxiliary inductance, and may have two or more stators each acting in a different wave range.
Patent GB-1160361-A (GB)
Title: New Metal-Complex Azo Dyestuffs
Inventor: CRABTREE ALLEN
IPC: C09B62/012
Filed: 1966-01-31
Abstract: 1,160,361. Metal complex monoazo dyes containing at least three reactive groups. IMPERIAL CHEMICAL INDUSTRIES Ltd. 2 Jan., 1967 [31 Jan., 19661, No. 4174/66. Heading C4P. The invention comprises metal complex reactive dyes having one atom of Cr or Co complexly bound to two different metallizable monoazo compounds which together contain three cellulose-reactive groups attached to benzene or naphthalene nuclei through a linking nitrogen atom and at least three SO 3 H groups, each cellulose-reactive group comprising an acyl or heterocyclic radical containing an atom or group capable of entering into reaction with the OH groups of the cellulose molecule. Preferred metallizable monoazo compounds complexly bound in the dyes are phenylazonaphthalene or azonaphthalene compounds having an OH or COOH group o to the azo group in each nucleus. The dyes may be obtained by reacting a metal-complex compound having one atom of Cr or Co complexly bound to two different metallizable monoazo compounds which together contain three acylatable amino groups on benzene or naphthalene nuclei, with the halide or anhydride of an acid carrying a substituent capable of reacting with the OH groups of the cellulose molecule, the reactants together containing at least 3 S0 3 H groups. Alternatively, the dyes may be obtained by reacting a metallizable monoazo compound with a 1: 1 Cr- or Co-complex of a metallizable monoazo compound, the two metallizable compounds being different and so chosen that they together contain 3 cellulose-reactive groups and at least 3 SO 3 H groups. As a modification of the former process the metal-complex compound may be reacted with cyanuric chloride and the resultant tris-(dichloro-striazine) compound reacted with NH 3  or a primary or secondary amine. Examples are given for the production of the dyes. They are useful for colouring cellulose textile materials.
Patent GB-249981-A (GB)
Title: Improvements in apparatus for amusement purposes
IPC: A63G25/00
Filed: 1925-02-14
Abstract: 249,981. Capitelli, C. Feb. 14, 1925. Amusement apparatus.-Passenger cars of the type driven from overhead wire netting have the electric motor 2 reversible and controlled by a switch 13, which preferably has a delayed action to enable the motor to slow down and stop before being reversed. The switch may be handoperated by a lever 12, or a switch 21 may be mounted below the floor 22 so as to be operated by a bar 23 rocked by pedals 28 which engage the arms of a lever 25 mounted on the bar 23. A wheel 9 is connected by spindles 9', 11' with a steering-wheel 11. A pneumatic buffer 15 is mounted on the part 16 of a ball-race, the other part 17 of which is carried by the car. The car runs on pivoted castors 8.
Patent GB-625757-A (GB)
Title: Improvements in or relating to the production of 4-chloro-3-nitro-benzene-sulphonyl chloride
IPC: C07C303/08
Filed: 1947-02-13
Abstract: 4-Chloro-3-nitro-benzene-sulphonyl chloride is obtained by heating o-chloro-nitrobenzene with more than an equimolecular quantity of chloro-sulphonic acid to a temperature of 100-135 DEG  C., 2-6, especially 4-5, molecular porportions of chloro-sulphonic acid are preferred.  The temperature is preferably raised to the required temperature in a series of steps as the reaction proceeds and is then maintained at that temperature until reaction ceases.  The sulphonyl chloride is obtained as a solid on adding the reaction products to crushed ice and water maintained at 0 DEG  C.  In an example, o-chloro-nitro-benzene is heated to 100 DEG  C. with a four-fold molecular excess of chloro-sulphonic acid and the temperature then raised to 130 DEG  C. by hourly increases of 10 DEG  C. and maintained at 130 DEG  C. for three hours when the sulphonyl chloride is isolated as described above.  If a particularly pure product is desired the ice water mixture is neutralised with sodium bicarbonate. 4-Chloro-3-nitro-benzene-sulphonyl chloride may be used as an intermediate in the preparation of diphenylamine dyestuffs.
Patent GB-765091-A (GB)
Title: Improvements in or relating to crop dusting apparatus mounted on aircraft
IPC: B64D1/16
Filed: 1952-02-18
Abstract: 765,091. Crop dusting apparatus. YOUNG, R. C., KEMP, W. P., and HOLLAND, J. S. Feb. 13, 1953 [Feb. 18, 1952], No. 4209/52. Class 6(1). Apparatus for distributing granular or powdered material from an aircraft comprises a hopper 4 which feeds material through an opening 5 controlled by a regulating valve 6 into an airstream flowing through an openended and partitioned spreader 7, the spreader being splayed at its discharge end to effect deposit of the material over a wide area. As shown a rotary agitator 8 is provided and may be driven electrically or by a wind driven vane or turbine or by a power take-off from the aircraft engine. An inclined baffle plate 20 is mounted in the front of the spreader and gives a venturi effect in the spreader. The partitions are formed by vertical ribs mounted inside the spreader which extend forwardly and below the baffle 20. The valve 6 comprises a slidable plate operated by means of a lever 11 and link 14 from the cockpit 2.
Patent GB-607894-A (GB)
Title: Improvements in and relating to dust-bin covers for the dustless discharge of vacuumcleaner dust-bags
IPC: A47L9/20
Filed: 1946-02-11
Abstract: 607,894. Dust-bin covers. WIJNBERG, A., and EWEG, J. Feb. 11, 1946, No. 4227. Convention date, July 2, 1943. [Class 26] A cover for a dustbin is provided with an opening and means to make a tight fit between the rim of the opening and the mouth of a dust bag of a vacuum cleaner, said rim projecting no higher above the cover than is necessary to enable the dustbag to be secured thereto. The securing means consists of a beaded ridge 4 around which fits a resilient bag 5. or a bag with a rubber ring or metal spring. A metal ring on the mouth of the bag may make a sliding fit with a downturned inner portion of a rubber cover. The Specification as open to inspection under Sect. 91 comprises also an outwardlyflanged mouth of the bag fixed to the cover by spring blades adapted to swing horizontally. This subject-matter does not appear in the Specification as accepted.
Patent GB-812913-A (GB)
Title: Improvements in power-assisted steering gear for motor vehicles
Inventor: STOCK CHARLES SAMUEL ROBERTS
IPC: B62D5/06
Filed: 1955-02-14
Abstract: 812,913. Vehicle power steering. GIRLING Ltd. April 22, 1955 [Feb. 14, 1955], No. 4268/55. Class 79(5) [Also in Groups XXXII and XXXIV]  In a vehicle power - assisted steering gear having a piston and cylinder assembly with the piston rod 13 adapted to be connected to the vehcile frame and with the cylinder 11 carrying a control valve 16 actuated by a component, e.g. the drop arm 20, of the vehicle steering linkage, the component acts on a control member 18 coupled to the valve 16 and the member 18 is mounted for linear movement between rows of balls 29 in a housing attached to the cylinder, the balls running in longtitudinal grooves in the member 18 and in channels 30 in the housing. As further shown the arm 20 has a cylindrical portion 21 between shoulders 22, 23 engaged by blocks 24, 25 which have curved end surfaces engaged by pads 26, 27. The pad 27 engages an end surface of a bore in the member 18 and the pad 26 is engaged by a plug 28 screwed into the bore. The member 18 is longitudinally guided in the cylinder 11 by two rows of balls 29, each row being provided with a cage formed by coiling a resilient wire 31 (see Groups XXXII and XXXIV).
Patent GB-1390022-A (GB)
Title: Sub-dividing elongated members
IPC: B23D33/00
Filed: 1971-02-09
Abstract: 1390022 Controlling shearing machines WILKINS & MITCHELL Ltd 10 Feb 1972 [9 Feb 1971] 4299/71 Heading B3W A steel billet of usable quality throughout its length and to be cut into pieces 18-25 of equal length d with one off cut 26 of random length is fed by first means (not shown) against a back stop 10 positioned at a distance d from the shear plane 13, clamped by hold down 14, 15 and sheared by blades 11, 12 successively until a photo-cell 30 detects that the remaining uncut portion is between nd and (n+1) d, n, as shown, being equal to 1. This first shearing cycle is immediately stopped and second cycle starts in which second feed means, a retractable pusher 17 reciprocable along a member 16, is actuated to feed the portion 25, 26 towards the stop 10 until its trailing edge 29 is at a distance nd from the shear plane 13. The off cut 26 is sheared off and the piece 25 is ejected by the next billet. If n=more than 1, i.e. the uncut portion when the photo-cell 30 stops the shearing cycle contains two or more lengths d plus the off cut 26, after the off cut has been sheared, pieces of length d are sheared from the remaining portion as were the lengths 18-24. After each shearing operation in which the stop 10 is involved, the stop is retracted to allow the sheared piece to be discharged. The position of the backstop may be adjusted automatically in dependence on the weight per unit length of the billet which is signalled to the backstop from weighing apparatus.
Patent GB-214200-A (GB)
Title: Improvements in the means for fixing turbine rotor discs on their shafts
IPC: F01D5/02
Filed: 1924-02-19
Abstract: 214,200. Akt.-Ges. Brown, Boveri, et Cie. April 11, 1923, [Convention date]. Securing turbine rotors on shafts.-In order, without involving severe shrinkage stresses, to maintain tightness and accurate centring of turbine rotors on their shafts when operating under high speed and temperature, the rotors are shrunk or forced on to elastic intermediate members, which deform under the grip but follow up any expansion of the rotor, the torque being taken by one or more keys. The elastic member may be in the form of a Z-section ring a, Fig. 9, preferably of hardened and ground spring steel. The bearing surfaces of such rings remain parallel and in full contact with the shaft c and rotor b. One ling may, as shown, be centrally disposed between two keys d<1>, d<2>, or this arrangement may be inverted, when each ring may be utilized for two adjacent rotors. The ring may comprise separate concentric portions a<1>, a<2>, a<3>, Fig. 7, or may be divided radially into segments; greater resilience may be imparted bv providing staggered axial slits e, Fig. 6. The ring a may be of U- 'section, Fig. 10, or tubular section, Fig. 11.
Patent GB-808321-A (GB)
Title: Improvements in or relating to power driven machines
IPC: A01D34/47
Filed: 1956-02-11
Abstract: 808,321. Lawn mowers. WEBB & CO. Ltd., H. C., and TAYLOR, F. W. Jan. 25, 1957 [Feb. 11, 1956], No. 4358/56. Class 6(2). [Also in Groups XXIII, XXVI and XXXI] An I.C. engine 1 is mounted on inverted channel section bearers 9 adapted to be slidably received in parallel channel shaped guides 13 secured to the side plates 14 of a lawn-mower, and the power unit including a fuel tank 2, carburettor, cord starter 4 and clutch 5 can be removed as a unit and used for driving, e.g. a roller, rotary cultivator, or saw-bench. Pins 20 passing through holes 21 in the bearers 9 are screwed into holes (not shown) in the guides 13. A drive pinion 10 on the engine output shaft 6 is adapted to pass through an opening 19 in one of the side-plates 14 to engage a toothed annulus 18 which is connected by a chain or gear transmission to rollers 15 and a cutting cylinder 16. A locating and counter-torque resisting peg 22 on one of the side plates 14 is adapted to be received in an aperture 23 in part of a bracket 8 which supports the shaft 6.
Patent GB-548186-A (GB)
Title: Improvements in or relating to the preparation or maintenance of an electrolyte having a desired characteristic or characteristics and to apparatus for determining the composition or changes in composition of an electrolyte
IPC: C02F1/72
Filed: 1940-04-24
Abstract: 548,186. Determining physical qualities of materials; resistance measurements. WALLACE & TIERNAN PRODUCTS, Inc. April 24, 1940, No. 4375/42. Convention date, Aug. 18, 1939. Divided out of 548,174. Drawings to Specification. [Class 37] The preparation or maintenance of an electrolyte having a desired characteristic comprises determining the composition or a change in the composition of the electrolyte by contacting the electrolyte with a polarized electrode, adjusting the resulting polarizing current with change in temperature of the electrolyte so as to maintain the polarizing current substantially uniform, and utilizing the determined depolarization or the change therein to effect control of the amount of a reagent or reagents to be added to the electrolyte. The description of the apparatus is the same as that in Specification 548,174. Specifications 493,457 and 548,171, [both in Group XXXVIII], also are referred to.
Patent GB-1307385-A (GB)
Title: Dithiols their preparation and compositions made from them
IPC: C08L21/00
Filed: 1970-01-29
Abstract: 1307385 Dithiols SOC NATIONALE DES PETROLES D'AQUITAINE 29 Jan 1970 [31 Jan 1969] 4386/70 Heading C2C [Also in Divisions C1 and C5] Novel dithiols of formula where R is a C 1-12  hydrocarbon group, are prepared by acetalizing ClROH with HCHO and reacting the resulting formal with an alkali metal acid sulphide and H 2 S. Cl(CH 2 )xOCH 2 O(CH 2 )xCl where x is 3 and 4 are prepared by the first stage of the above reaction.
Patent GB-527905-A (GB)
Title: Improvements in and relating to tractors
IPC: B62D51/00
Filed: 1939-02-10
Abstract: 527,905. Tractors. PORSCHE, F. Feb. 10, 1939, No. 4400. Convention date, March 9, 1938. [Classes 79 (i), 79 (ii) and 79 (v)] An agricultural tractor comprises an engine 1, an implement 9, and a hydraulic gear 2 for transmitting power from the engine to the driving wheels. The hydraulic gear may be either a clutch or a torque converter. The engine throttle is controlled by a hand lever 11 on the guiding handles 10, this lever having three main positions E, W. A. When the lever 11 is in the position E the engine speed is just sufficiently high to keep it running without transmitting sufficient torque through the clutch 2 to propel the tractor. With the lever 11 in the position W the engine runs at a higher speed and the torque transmitted through the clutch 2 is sufficient to drive the tractor at a low speed if the implement is lifted clear of the ground ; this speed is used for turning the tractor. When the lever 11 is in position A the engine is running at a sufficiently high speed to drive the tractor with the implement in the ground. The "turning" position W of the hand lever 11 is indicated to the driver by means of an adjustable ball catch 17 engaging a recess 16 in the lever. This catch is adjustable in a slot 13 in the fixed quadrant 12 and is locked in any desired position by a nut 20.
Patent GB-823946-A (GB)
Title: Improvements in or relating to devices for generating and transferring thermo-electric power effects to the human skin
Inventor: SUKACEV LEV
IPC: H01L35/00
Filed: 1956-02-13
Abstract: 823,946. Thermo-electric devices. METALLIC FLOWERS Inc. Feb. 13, 1956, No. 4410/56. Class 81 (2). [Also in Group XXXVI] A thermo-electric device to be worn on the arm or wrist consists of a thermoplastic plate or disc 1, Figs. 1, 2, carrying a thin metal strip composed of overlapping sections 3, 4 of dissimilar metals. Thus, the sections 3 may be of copper or iron and those 4 of zinc, nickel or constantan. The strip is coated with lacquer or paint of sufficient thickness to serve as an electrical insulator without preventing the flow of heat from the wearer to the strip. The ends of the strip are connected through terminals 7, 8 to chains 9, 11 which may also be formed, of sections of dissimilar metals. In a modification, the ends of the metal strip may be connected to wires 17, 20, Fig. 3, embedded in an elastic fabric body belt 16 carrying thin metal discs 28, 29 connected to the wires and applied to the skin of the wearer. In another arrangement, the ends of the strip 33, 34, Fig. 7, which is applied to the skin, are connected to metal strips 36, 37 on the opposite side of the plate. The strips 36, 37 are connected to terminals 48, 49 to which are connected chains the opposite ends of which are attached to the plate at the points 53, 54. The strips 33, 34 may be formed by electrolytic deposition in grooves in the plate.
Patent GB-820945-A (GB)
Title: Improvements in or relating to tubular members
Inventor: SCOTT ARTHUR LESLIE
IPC: B29C70/20
Filed: 1956-02-14
Abstract: 820,945. Fishing rods. COLUMBIA PRODUCTS CO. Feb. 14, 1956. No. 4618/56. Class 48. [Also in Group XXVIII] A fishing rod, or a section thereof, comprises an inner layer 4 of helically wound, or braided, glass fibres 5, and an outer layer 2 of longitudinally-extending glass fibres 3, the fibres being bonded together with a polyester resin.
Patent GB-644562-A (GB)
Title: Improvements in or relating to heating ovens employing radiant heat
IPC: B29B13/02
Filed: 1945-02-23
Abstract: 644,562. Industrial oven. ROBERTS, T. A., and HAPPERFIELD, G. J. Feb. 23, 1945, No. 4619. [Class 51 (ii)] I A heating oven comprises a chamber 1 having. radiation reflecting walls, a horizontal partition 5 removably mounted substantially centrally within such chamber, and sources 3 of radiant heat provided within the chamber so as to direct heat against both sides of the partition, said horizontal partition comprising two relatively movable perforated members spaced apart from one another, the perforations in the two members being of sufficient size to permit pellets placed on the upper member to drop through both members when the perforations in the two members are in register, one of such members being movable laterally to a position where the perforations are out of register, when the pellets placed upon the upper member are supported by parts of the lower member. The horizontal partition 5 may be removable either through a slot. in a closed wall of the chamber 1 or through doors formed by a wall thereof. The partition may be constructed of rock glass, wire netting or perforated -, sheet material.
Patent GB-1064767-A (GB)
Title: Inflator means for tires and the like
Inventor: BROCKLIN OWEN FRED VAN
IPC: B60S5/04
Filed: 1965-02-03
Abstract: 1,064,767. Inflating tyres and the like. SCOVILL MANUFACTURING CO. Feb. 3, 1965, No. 4662/65. Heading B7C. [Also in Division F2] A device for inflating a pneumatic tyre or the like with gas at super-atmospheric pressure comprises an adapter 14 frictionally fitted into a valved closure member 24 of a third container 10 and having an axially movable floating pin 62 connected to a tubular body 50 by a spider 64. The pin 62 is normally biased by the spider towards an end of the adapter screw-threaded for attachment to a tyre valve 18. As the device is screwed on to the valve 18 the pin 62 first engages and unseats a check valve pin 68 in the tyre valve and then moves to unseat a valve 40 in the member 24. The container may hold gas, puncture sealant and fibres. The adapter is preferably moulded from lowdensity polyethylene.
Patent GB-1092304-A (GB)
Title: Roof support suitable for use in a mine
Inventor: LAMPL FRIEDRICH
IPC: E21D23/04
Filed: 1965-02-03
Abstract: 1,092,304. Advancing mine roof supports. DOWTY MINING EQUIPMENT Ltd. April 26, 1966 [Feb. 3, 1965], No. 4710/65. Addition to 957,072. Heading E1E. In an advancing mine roof support as claimed in claim 1 of Specification 957,072, the advancing means 5 act on one end of a lever 6 which is connected to the base plate 1 by a bracket 7 and is connected to a pit prop 3 by a connection 8 arranged as shown in order to apply a tilting force to the prop.
Patent GB-972495-A (GB)
Title: Apparatus for the finishing of metal strip
IPC: B21C1/04
Filed: 1961-02-08
Abstract: 972,495. Making metal strip; drawing. J. D. ILLA. Feb. 8, 1961 [Feb. 18, 1960], No. 4743/61. Headings B3P and B3W. In a strip driving apparatus which comprises a feed drum, two rows of driving and guiding drums and a winding drum, one row of drums has two grooves in the periphery thereof and the other row has a single groove, the strip being wound over the drums continuously to pass through both the grooves of the doublegrooved pulley and through the single-grooved pulley. A strip D passes from the feed drum E into one groove of a double-grooved pulley A, round a single grooved pulley B, back through the second groove of the pulley A, through a tool station G and hence to a second arrangement of pulleys A1 and B<SP>1</SP> over which it passes in a similar manner to the pulleys A and B before being wound on to a drum F. Additional tool stations G may be arranged between the pulleys A and B, and A<SP>1</SP> and B<SP>1</SP>.
Patent GB-412341-A (GB)
Title: Improvements in or relating to detachable cylinder heads for internal combustion engines
IPC: F02B69/02
Filed: 1933-02-16
Abstract: 412,341. Cylinders. HODGSON, A. E., 62, Conduit Street, and JONES, N. C., 25, Fairfield Road, Charlton, both in London. Feb. 16, 1933, No. 4803. [Class 7 (ii).] The combustion chamber roof of an overhead valve engine comprises, (1), a sloping part g which may have an angular or arc-shaped end wall g<1> ; (2) a flat part containing the inlet and exhaust valve seats, and (3), a steeply inclined port k forming, with straight or curved walls l, a cavity for the sparking plug. The chamber is formed in a detachable head b, intended to replace the existing head of a petrol engine and arranged to produce a greatly reduced clearance and thus enable the engine to operate on producer gas or coal gas.
Patent GB-701326-A (GB)
Title: Improvements in or relating to rotary furnaces
IPC: F27B7/02
Filed: 1951-02-28
Abstract: 701,326. Rotary furnaces. SAINDERICHIN, N. A. Feb. 28, 1951 [March 28, 1950], No. 4815/51. Class 51 (2) A rotary furnace comprises a pre-heating chamber I rotatable about a horizontal axis and having a sectional bore, the longitudinal axes of symmetry of the sections being alternatively inclined to one side and the other of the axis of rotation whereby rotation of the chamber serves to feed material from one end thereof to the other, a stationary chamber 24 into one side of which the outlet end of the chamber 1 engages, a rotary firing chamber 27 the inlet end of which is engaged in the opposite side of the stationary chamber, a chute 42 in the stationary chamber leading from the outlet end of the pre-heating chamber 1 to the inlet end of the firing chamber 27, and a burner 44 in the firing chamber, hot gases passing from the firing chamber through the chambers 24 and 1.