baber/WOPTO huggingface dataset:
Patent GB-1073723-A (GB)
Title: Improvements in or relating to drum tedders
IPC: A01D78/00
Filed: 1964-06-23
Abstract: 1,073,723. Drum tedders. PATENT CONCERN N.V. June 23, 1964 [July 5, 1963; Sept. 17, 1963], No. 25998/64. Heading A1F. A drum tedder is characterized by guide members in the form of plates 64, 65, 66 and 67 which are positioned at one side between the tined drum and a covering hood therefor. The machine comprises two drums pivotally interconnected by a bar 3 and drivingly interconnected by a universal joint 57. The drive for the drums is taken from a power-take-off shaft of the tractor via a gearbox 30 and pulleys enclosed in casing 28. The draw bar 32 is pivotable through 90 degrees with regard to the machine and is connected by a bar 36 with a supporting wheel 43 which also pivots. Further crop guide members such as the rods 75 are arranged at the rear of the drums and include an angle-section bar 83 which closely follows the contour described by the drum tines. These guide members are pivotable into an inoperative position. In an embodiment, a single drum has detachable guide members on each side.
Patent GB-984201-A (GB)
Title: Improvements in and relating to fountain pens
IPC: B43K5/18
Filed: 1963-07-01
Abstract: 984,201. Fountain pens. A. J. FAGARD & CIE. July 1, 1963 [July 12, 1962], No. 26031/63. Heading B6G. A fountain pen comprises a feed bar 22 having a cylindrical lug 23 which passes through a hole in the nib and into a recess 18 in the nib section 11. The ink capillary passage 9 passes through the lug. Alternatively, a lug on the nib section may engage in a recess on the feed bar.
Patent GB-1219614-A (GB)
Title: Improvements relating to active rc-filters
IPC: H03H11/12
Filed: 1968-05-30
Abstract: 1,219,614. Frequency selective feedback circuits. TELEFONAKTIEBOLAGET L.M. ERICSSON. 30 May, 1968 [31 May, 1967], No. 26061/68. Addition to 1,211,574. Heading H3W. In an active RC filter of the kind disclosed in the parent Specification, the other terminal of at least one of the impedances of odd number is coupled to receive feedback from, orrelated to, the signal at the output pair of terminals. In an embodiment comprising a low-pass filter, resistors R 1 -R n  are connected in series between input terminal 1a and the grid of cathode follower T. Shunt capacitors C 2 , C 4 -C n  are returned to the cathode of cathode follower T; in addition to the other capacitors C 1 -C n-1  of the parent Specification, shunt capacitors C<SP>1</SP> 1 -C<SP>1</SP> n-1  are provided and are returned to the cathode of cathode follower T. In a modification (Fig. 2, not shown) capacitors C 1 -C n-1  and C<SP>1</SP> 1 -C<SP>1</SP> n-1  are replaced by a single set of capacitors (C<SP>11</SP> 1 -C<SP>11</SP> n-1 ) returned to taps on the cathode resistor of cathode follower T. The Specification also describes the corresponding high-pass filters (Figs. 3, 4, not shown).
Patent GB-464583-A (GB)
Title: Improvements in apparatus for rendering articles visible through a layer of fog or the like
IPC: G02B5/30
Filed: 1935-09-20
Abstract: 464,583. Polarizing - apparatus. JOSEPHY, B. Sept. 20, 1935, No. 26119. [A Specification was laid open to inspection under Sect. 91 of the Acts, March 21, 1936.] [Class 97 (i)] To render objects visible in a fog they are illuminated by coloured polarized light, preferably yellowish-red light, and are observed through an analyzer preventing the passage of light of the same state of polarization as the illuminating light. The light may be linearly, circularly or elliptically polarized and observation may be effected through spectacles or field glasses and colour filters in addition to an analyzer. In the analyzer shown the light beam is incident at an angle of 55‹ on a black glass cone A, is reflected to an annular mirror C and thence to a second cone B. A strip D of the cone A is made non-reflecting so that light of a particular plane of polarization will not pass. Specification 286,394, [Class 97 (i)], is referred to.
Patent GB-990115-A (GB)
Title: Improvements in or relating to control systems for controlling the torque transmitted from an engine by an electromagnetic clutch
IPC: H02P15/00
Filed: 1961-07-19
Abstract: 990,115. Controlling clutches. ETABLISSEMENTS ED. JAEGER. July 19, 1961 [July 22, 1960; Oct. 31, 1960; Jan. 26, 1961], No. 26188/61. Heading F2L. The current for energizing a magnetic particle clutch used in a vehicle is so derived from the ignition circuit of the vehicle engine and supplied to the clutch coil through a transistor amplifier that the energizing current is proportional to the engine speed. As shown, a clutch coil 1 is connected to the collector 5 of a transistor, the base 8 of which is connected through a resistor 11 to the centre tapping of the secondary coil 12 of a transformer having its primary coil 15 in series with the primary coil 16 of an ignition coil and the contact 17 of a contact breaker. The ends of the secondary coil 12 are connected through rectifiers 13, 14 to the emitter 6 of the transistor which is also connected to the terminal 7 of a battery. The frequency of the signals reaching the transistor base 8 is equal to the frequency of opening of the contact 17, which is a function of the engine speed, and the current supplied to the clutch coil 1 is directly proportional to this frequency up to a limiting frequency, after which the transistor becomes saturated and a constant current is supplied to the clutch. Other circuits using transistors are described, and may include thermistors for correcting variations in the clutch and ambient temperatures; moreover a variable impedance may be connected in series with the clutch coil and be adjusted in accordance with the position of the accelerator pedal.
Patent GB-830187-A (GB)
Title: Improvements in or relating to the manufacture of printed circuit panels
IPC: H05K3/06
Filed: 1957-08-20
Abstract: 830,187. Printed circuits; electro-plating selected parts of a metal surface. GENERAL ELECTRIC CO. Ltd., and NORRIS, E. Aug. 20, 1958 [Aug. 20, 1957], No. 26264/57. Classes 37 and 41. A printed circuit comprising a copper-foil pattern formed on an electrically insulating base and having a limited area of the copper foil electroplated with a metal having a good wear and corrosion resistance, e.g. to serve as fixed switch contacts, is manufactured by coating the metal surface of a copper-clad laminate with a plating resist except over the area to be electroplated, carrying out the electroplating operation, removing the resist and finally removing those portions of the copper surface of the laminate not required in the completed printed circuit. The plating metal is preferably silver. The resist is formed by coating the laminate with a suitable photo-resist which is hardened by exposure to ultra-violet light through a suitablyprepared transparency. The unhardened portions are washed away and silver is then plated electrolytically on the copper surfaces thus exposed. The resist is then removed from the laminate and a fresh layer placed thereon; this is then hardened by exposure to ultra-violet light through a further transparency in the form of a negative of the desired circuit pattern. The unhardened resist is then washed awav and the thus-exposed copper removed in a spray-etching machine.
Patent GB-884246-A (GB)
Title: Improvements relating to diesel fuels
IPC: C10L1/19
Filed: 1960-07-28
Abstract: A diesel oil contains a small amount of an ester of a higher fatty acid and a mono- or polysaccharide.  Mono-, di- and polyesters may be used; the amount may be 0,01% to 1% by weight. The fatty acid may have from 12 to 22 carbon atoms in the molecule.  In Examples, tetrastearyl glucose and polystearyl saccharose are added to a gas oil.
Patent GB-464762-A (GB)
Title: Improvements in resinous products derived from derivatives of diphenylolmethane
IPC: C08G63/553
Filed: 1935-09-23
Abstract: Resin or balsam-like materials are prepared by heating a mono- or polycarboxylic acid or anhydride thereof with a perhydro derivative of a compound of the formula <FORM:0464762/IV/1> wherein R is an aromatic hydrocarbon nucleus and X and X<1> represent hydrogen, alkyl, aryl or jointly with C a polymethylene ring.  The perhydro body may be used in the amorphous condition obtained by heating above its melting point but below its decomposition temperature.  Suitable carboxylic acids include propionic, crotonic, lactic, glycollic, a -hydroxy-iso-butyric, oleic, linoleic, stearic, elaeostearic, ricinoleic, naphthenic, phthalic, succinic, maleic and adipic acids. Fatty glycerides such as linseed, cotton seed, tung, castor, palm and soya bean oil may also be present during the condensation. Esterification catalysts such as mineral acids, oxides, or salts may be present during the condensation.  In examples, perhydro-b -b -bis-(p-hydroxyphenyl)-propane is esterified with (1) propionic anhydride, (2) lactic acid, (3) maleic acid, (4) sebacic acid and (5) phthalic anhydride.  The products, with or without the addition of oils, nitrocellulose or cellulose acetate may be used in the manufacture of coating compositions.  Samples have been furnished under Sect. 2 (5) of condensation products of phthalic anhydride with perhydro derivatives of (1) p-p<1>-dihydroxy-tetraphenylmethane, (2) 1 : 1-bis-(p-hydroxyphenyl)cyclohexane and (3) p-p<1>-dihydroxydiphenylmethane.  Perhydro derivatives of the bis-(p-hydroxyphenyl) compounds of methane, ethane, propane and cyclohexane may be prepared by hydrogenation in solution in ethyl alcohol in the presence of an active nickel catalyst.  The Specification as open to inspection under Sect. 91 refers to the production of resinous bodies by heating the perhydro compounds at temperatures above their melting point but below their critical cracking temperature preferably in vacuo.  The products may be used, with or without the addition of cellulose derivatives, natural or synthetic resins, in lacquers, moulding powders and as the intermediate layer in safety glass.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1341499-A (GB)
Title: Injection moulding machines
IPC: B29C45/68
Filed: 1971-04-19
Abstract: 1341499 Toggle-mechanism for closing moulds KRAUSS-MAFFEI AG 19 April 1971 [11 April 1970] 26299/71 Heading F2K [Also in Division B5]  A closing device for an injection mould carrier plate 2 is connected to a stationary supporting plate 1 by a pair of toggle levers 8, 9 which, in the "open" position (as shown), occupy an angle of less than 90 degrees, the toggle-lever joint being engaged by a driving unit 28 supported from the two plates by a pair of straps 10, 11 which take the counter-force, the arrangement being such that when the carrier plate is in this position the line of force of the driving unit through toggle-lever joint 25 forms an angle not greater than 70 degrees with the direction of closure of the carrier plate, so that the force applied has a component in the closing direction. Preferably this angle is less than 45 degrees. The supporting straps 10, 11 may be of different lengths, one being bent the fluid pressure cylinder of the driving unit being supported by a pivot 27 at the angle of the bend and the piston 33 being connected to the toggle-lever joint 25. The toggle-lever and the straps are preferably formed from parallel pairs of elements which interleave (Fig. 3, not shown) to provide a compact assembly. Further embodiments (Figs. 5 to 8a), describe double-toggle arrangements, some utilizing straight support straps either of different lengths or the same length, and with the driving unit connected to the bottom pair of toggle levers, or the top pair. In one arrangement (Fig. 8, 8a, not shown) the fluid-pressure cylinder is connected by its lower end to the support strap for greater compactness. The stationary supporting plate 1 can be adjusted along the rods 12 by bearing bushings 17 operated by gearing 19, 20.
Patent GB-191149-A (GB)
Title: Improvements in and relating to brakes for railway and tramway vehicles
IPC: B60T7/12
Filed: 1921-10-05
Abstract: 191,149. Zweigbergk, T. Oct. 5, 1921. Electric; applied by springs.- An electric torque motor 3 and a spring 2 are arranged to act in opposite directions on the brake gear preferably so that the spring tends to apply the brake, and the motor to hold it off. The brake lever 4 is pivoted at 6 and connected to the brakes by a rod 7. The torque motor 3, which is capable of remaining stationary under current, is geared to a drum 10 on which the chain 11 connected to the long arm of the lever 4 is wound. Chains 13, 14 connect the lever 4 to drums 15 so that the brakes may be operated by hand if desired. To reduce the current taken by the motor when it has taken the brakes off, a resistance 16 is put into the circuit 19 by e, switch 17 connected at 18 to the lever 4. The controller 20 which provides for a graduated application of the brakes, has a resistance 21 connected to fixed contact studs, and a number of moving drum segments. Specification 6007/95. [Class 79, Locomotives &c.], is referred to.
Patent GB-330190-A (GB)
Title: Apparatus for the production of documents on which the result of a weighing operation and a picture of the weighed article are recorded
IPC: G01G23/35
Filed: 1929-08-29
Abstract: 330,190. Ocur Metallbettenfabrik Ges. Aug. 29, 1929. Addition to 311,614. Tell-tale apparatus.- An automatic weighing - machine incorporating an automatic camera and adapted to issue a disc or ticket bearing a record of the weight and a photograph of the article weighed or of a characteristic portion thereof, as described in the parent Specification, is characterized in that the operative elements of the automatic camera and of the automatic weighing machine are positively connected with each other and with a common actuating device in such a manner that the automatic camera and the weight-recording device are actuated in succession. If the weight record is produced by a printing operation with ink or by perforating the strip, owing to the completion of the photographic operation of the camera the picture produced thereby is not injured by the shock of the subsequent printing or perforating operation. As applied to a personal weighing machine, a seat 1 for the person to be weighed is operatively connected in known manner to a disc 3 bearing transparent weight numerals illuminated by a light 4, and the motive power for the various operations is supplied by an electric motor 15. Above the disc 3 is the lens 6 of an automatic camera 5, 8 through which is lead a strip of light-sensitive paper from a roll 7. After the exposure of the person being weighed has been completed in known manner by the automatic camera, the strip is guided past the relevant weight numerals on the disc 3, and a switch, embodied in the camera, illuminates the lamp 4 and effects a photographic record of these numerals. The strip is then guided down a channel 9 to the baths 10, 11 for photographic treatment, and the completed ticket is finally delivered to a cup 13.
Patent GB-1178404-A (GB)
Title: Dust or Sand Separators.
Inventor: ROBERTS DEREK AUBREY
IPC: F02C7/052
Filed: 1966-06-14
Abstract: 1,178,404. Centrifugal separators. ROLLSROYCE Ltd. 24 July, 1967 [14 June, 1966], No. 26409/66. Heading B2P. An apparatus for separating particulate matter from air, e.g. dust and sand from air supplied to a gas turbine driving an helicopter rotor, comprises a rotor 5 having vanes 6 between which the air to be cleaned flows generally radially inwardly, guide vanes 3 situated between the vanes 6 and an inlet 2 for the air to be cleaned, a discharge passage 8 for the particulate matter separated by centrifugal action resulting from the rotation of the rotor vanes 6, and a delivery passage 11 for cleaned air situated nearer to the axis of rotation of the rotor than the vanes 6. As shown, the vanes 6 lie in a plane containing the axis 7 of the rotor. Alternatively, each vane may lie in a plane intersecting or passing close to this axis. Each of the vanes 6 is of rectangular form and has its longitudinal centre line inclined to the axis 7. The guide vanes 3 are correspondingly inclined and are curved so as to direct the air to be cleaned tangentially on to the vanes 6 to cause rotation of the rotor whereby the particles contained in the air are centrifuged to the annular region adjacent the outer edges of the vanes 6 and travel along this region to the left (in Fig. 1) with a small proportion of the air into and through the passage 8 which is provided with flow assisting vanes 8A and which communicates with a volute discharge passage 9. The travel of the particles towards the passage 8 is assisted by arranging the rotor and guide vanes in such manner, Fig. 3 (not shown), that the longitudinal centre line of each of the rotor vanes 6 extend in a direction having a circumferential component such that the end remote from the discharge passage 8 is in advance (in the direction of movement) of the end adjacent the passage 8, while the longitudinal centre line of each of the guide vanes 3 extends in a direction having a circumferential component in the opposite sense. Alternatively, each rotor and guide vane may be divided into two halves, the centre lines of the halves extending in directions having circumferential components in opposite senses, the particles being urged towards discharge passages which lie to the right and left hand ends of the vanes or towards a common discharge passage between the two sets of oppositely inclined half vanes. The cleaned air passes inwardly through the passage 11 having straightener and guide vanes 1, 12, 12A and enter the air inlet 14 of a gas turbine 15 axially. In a modified arrangement, the rotor 5 is driven by the gas turbine rotor.
Patent GB-508577-A (GB)
Title: Improvements in and relating to telephone installations
IPC: H04Q1/24
Filed: 1937-09-29
Abstract: 508,577. Automatic exchange systems. LEHNER, C., GADESMANN, M., LEICH. THAMMER, K., and LEICHTHAMMER, H., (trading as TELEFONBAU UND NORMALZEIT LEHNER & CO.). Sept. 29, 1937, No. 26423. Convention date, Oct. 17, 1936. [Class 40 (iv)] If a calling party fails to dial or to complete dialling, the called line is not tested, or the called party does not reply, a supervisory operator is automatically connected up under the control of a timing switch. In the arrangement shown, contacts k, z, a are operated respectively when dialling commences, when the final selector tests, and when the called party replies. If any of these operations does not take place within a prescribed time, timeswitch Th closes a circuit for a relay R which causes a finder PA to hunt for the connection. When this is found relay P operates over one of the wipers ca, da, ea, lighting a lamp Ni, N or Nm characteristic of the irregularity, and connecting an operator's set Pl to the speech wires a, b. Failure to reply may be due to the wanted party being busy or absent or to the called line being faulty or out of service. In a system comprising attended and unattended exchanges, the apparatus will be arranged at an attended exchange.
Patent GB-260298-A (GB)
Title: Improved manufacture of ceramic material
IPC: C04B35/16
Filed: 1926-10-23
Abstract: 260,298. Borgestad Fabrikker. Oct. 24, 1925, [Convention date]. Refractory substances containing magnesium orthosilicate.-A ceramic or refractory material comprises artificial magnesium orthosilicate obtained by heating a correctly proportioned mixture of calcined magnesite and talc to a temperature of 1000-1400‹ C. Excess of silicic acid in the mixture should be avoided. Silicates such as olivine, magnesium orthosilicate, &c. may be incorporated in the mixture as fillers. The compositions may be used either for making refractory articles or as cements for binding other refractory substances, particularly those containing magnesium compounds.
Patent GB-190116-A (GB)
Title: Process for removing hydrogen sulphide and other impurities from gases
IPC: C10K1/12
Filed: 1922-10-03
Abstract: 190,116. Koppers Co., (Assignees of Sperr, F. W.). Dec. 8, 1921, [Convention date]. Materials for purifying; purifier waste, revivifying.-Hydrogen sulphide, hydrocyanic acid and other impurities are removed from gases by first passing the gas into contact with an alkaline absorbent such as sodium carbonate to absorb the bulk of the impurities and subsequently treating the gas with more absorbent to remove the residue of the impurities. The absorbents from each stage are separately revivified. The gas is first passed by a pipe e through an absorber A and then passes by pipes M and f to an absorber G finally escaping by a pipe g. The solution from absorber A runs into a tank C and is pumped to the top of a regenerator D in which it is treated with air from a fan E and the revivified solution collects in a tank B and is circulated back to the absorber A. A similar revivification takes place in connection with absorber G and regenerator D. The air and impurities pass out by pipes F, L. Specification 170,572 is referred to.
Patent GB-409314-A (GB)
Title: Improvements in or relating to the production of hydrated lime
IPC: C04B2/04
Filed: 1932-09-27
Abstract: Quicklime is hydrated to a powder containing say 4 per cent of free water, heated in a sealed vessel to at least 80 DEG C. with stirring to assist the distribution of heat and moisture, and matured by maintaining such temperature for the necessary time whilst avoiding loss of free water by volatilization.  Water or steam may be added prior to the heating or maturing step, the latter of which occupies about 40 hrs. at 80 DEG  C. and about 3\ba1/2\be hrs. at 110--120 DEG C. when treating a hydrated lime containing 95 per cent Ca(OH)2.  The crude hydrated lime may be raised to the required temperature in a sealed indirectly heated tubular heater, which either rotates or is provided with rotating elements to assist the distribution of heat and moisture. Alternatively direct heating by inert gases may be effected.  The hot hydrated lime, with or without screening, is then stored without loss of pressure in a heat-insulated silo until fully matured.  The fully matured product when made into a plaster pat with water and a little plaster of Paris, dried at 35--45 DEG  C. and exposed to saturated steam at atmospheric pressure for three hours, should show no sign of disintegration, popping, or pitting. Specifications 25512/99, [Class 1], and 7079/10, [Class 1 (iii)], are referred to.
Patent GB-285759-A (GB)
Title: Improvements in and connected with bottle boxes
IPC: B65D25/04
Filed: 1927-10-11
Abstract: 285,759. Fiddes, J. Oct. 11, 1927. Cellular boxes; bands; strengthening.-A box for bottles &c. has the top and bottom edges of the side walls 1 provided with channel bars 3 which extend around the corners of the case and are connected by tie rods 6 which extend through the ends 2 of the box and are riveted to the bars. The rods 8 forming the open bottom of the box are riveted to the plates 7 which are secured to the lower portions of the end walls 2.
Patent GB-362910-A (GB)
Title: Improvements in or relating to furnaces
IPC: F23C9/08
Filed: 1930-09-09
Abstract: 362,910. Gaseous-fuel furnaces. STEIN & ATKINSON, Ltd., 47, Victoria Street, London. - (Chapman-Stein Co. ; Mount Vernon, Ohio, U.S.A.) Sept. 9, 1930, No. 26906. [Class 51. (i).] In a gas-fired furnace of the kind described in Specification 360,528, products of combustion are withdrawn from the flue leading to the chimney and passed under the hearth through the flue 17 to the combustion chamber 1 in front of the burner apparatus. Alternatively the gases may pass through the recuperator 15 and flue 19 to the combustion chamber. In the modification shown in Fig. 2, instead of the combustible gas being supplied to the compartment 3, as in the arrangement described above, it is supplied to passages 20 delivering into or in front of the passages 6 in the front wall of the chamber 3 while combustion products are led from the chimney flue through the flue 17 beneath the hearth to the chamber 3. Instead of the flue 17 being arranged beneath the hearth it may be arranged above. Air for combustion passes from the recuperator through the flue 8 to the chamber 2 where it is supplied by the action of air nozzles 13 into the combustion chamber.