baber/WOPTO huggingface dataset:
Patent GB-498014-A (GB)
Title: Improvements in and relating to band-sawing machines
IPC: B23D59/00
Filed: 1937-07-01
Abstract: 498,014. Machinery guards. ROBIN. SON & SON, Ltd., T., and ROBINSON, J. C. July 1, 1937, No. 18268. [Class 80 (iv)] A band saw for cutting wood comprises a base 4 above which is a chamber 5 housing the bottom and driving pulley 6 for the band saw 7. On the top of this chamber is mounted the work table 9. The band saw passes through openings in the table and the top of the chamber and also through a dust-removing chamber 10 provided with an inclined wall 12 leading to an opening 11. The front of the chamber 5 is closed by a door or by two doors 13 hinged on opposite sides. From the side of the chamber opposite to the opening 11 extends a column 14 also provided with a door and this column supports a top pulley chamber 16 also having a hinged door or two hinged doors 17 or one of these doors may also serve as the door for the column 14. The pulley 18 in the upper chamber is provided with saw-tensioning controls, but the actual tension mechanism is enclosed and the tension weight 21 or equivalent device is housed in the column 14. The doors 13, 17 and the door for the column are provided with securing means which may be connected to or controlled by the stopping and starting mechanism in such manner as to prevent the doors from being opened when the machine is running.
Patent GB-1419432-A (GB)
Title: Methyl-pentenyl sulphones
IPC: C07C315/04
Filed: 1973-04-17
Abstract: 1419432 Methyl-pentenyl sulphones RHONEPOULENC SA 17 April 1973 [18 April 1972] 18377/73 Heading C2C Sulphones of the general formula in which one of the symbols Y and Y 1  represents a hydrogen atom and the other symbol represents a methyl radical; each of R and R 1 , which are the same or different, represents a radical of formula -CHO, -COR 2 , -COOH, -COOR 3 , -CONR 5 R 5 , -CN, -SO 2 R 4 , -SO 3 R 5  and -NO 2 , wherein each of R 2 , R 3 , R 4  and R 5  represents aralkyl or aryl radical and R 5  can also represent a hydrogen atom, Q represents an alkyl, substituted alkyl, aryl, aralkyl or alkylaryl radical or a saturated or unsaturated terpene radical containing 5n carbon atoms, n being an integer of 1 to 9, which is substituted or unsubstituted, with the proviso that Q does not represent a 3-methyl butadienyl, 2-methylbutadienyl or 2-butadienylmethyl radical, are claimed per se. The compounds are prepared by reacting a sulphone of the formula or where X is halogen atom with a methylene compound of formula R-CH 2 -R 1  in the presence of a basic agent. Preferably the basic agent is an alkali metal alcoholate of an alkanol of 1 to 6 atoms or a quaternary ammonium hydroxide.
Patent GB-582244-A (GB)
Title: Improvements in and relating to gripping devices for pliable sheet material
IPC: A47H13/01
Filed: 1943-11-19
Abstract: 582,244. Wire clips. MARINIC, V. Nov. 19, 1943, No. 18426. [Class 44] A fastening device for suspending pliable material comprises wire formed to a loop 1 and having arms 2, 4, the part 4 having a square loop 3 and the part 2 a pointed hook 5 which projects through the loop 3 with considerable clearance when the arms 2 and 4 are crossed. The material to be suspended is gripped in the loop. Fig. 5 shows a modified form in which the loop 1 is eliminated.
Patent GB-458842-A (GB)
Title: Improvements in or relating to driving means, more particularly for plant involving frequent change of speed
IPC: F16H45/00
Filed: 1935-06-27
Abstract: 458,842. Momentum power - storing apparatus; flywheels. VOITH, W., VOITH, H., and VOITH, H., (trading as VOITH, J. M., [Firm of]), Heidenheim-on- Brenz, Germany. June 27, 1935, No. 18434. Convention date, June 27, 1934. [Classes 10 and 122 (i)] In driving means for a plant involving frequent changes of speed, comprising an energy-storing mass or fly-wheel F, a turbo-gear G for coupling it at will to the driving-shaft B, and a turbogear C for coupling the shaft B to the driven shaft E, the turbo-gear G consists only of a turbo-clutch or coupling, without stationary guide vanes, as distinguished from a turbo torque-transformer. The turbo-gear C may be a torque-transformer, as indicated, or a turboclutch, or a change-speed gear comprising both a clutch and a transformer for alternative use. Further, a supplementary gear D may be employed which is used in place of the turbogear to provide a step-up in speed from the shaft E to the shaft B for braking purposes by transfer of momentum from the driven plant or vehicle to the mass F. The epicyclic gear D shown in Fig. 6 comprises a sun-wheel d<1> on the shaft B, planetary pinions d<2>, and an outer gear ring d<3> which is held stationary by a brake d<4> when the gear is in use, the turbo-gear being then rendered inoperative by withdrawal of the fluid. When the turbo-gear is in operation, the brake d<4> is released, the shaft E being then driven by the turbo-gear via the planetary wheels d<2>. The engine A preferably drives the shaft B through direct or epicyclic speedraising gears. Means are preferably provided for controlling the braking effect by control of the admission of liquid to the clutch G and means, such as mechanical brakes, may be provided for further retarding the shaft E after disconnecting it from the driving shaft B. The inertia mass may then be further accelerated by the engine to provide ample energy for restarting. The successive operations involved in braking may be performed in correct sequence by automatic means, and automatic means may also be employed to uncouple the inertia mass F from the shaft B by withdrawal of fluid from the clutch G when either the driving or driven shaft attains a predetermined speed. To avoid gyroscopic effects, two inertia masses F<1>, F2 rotating in opposite directions, as shown in Fig. 4, may be employed, and two driven shafts E<1>, E<2> may be employed as shown. A modification is shown in which a driving shaft is provided at each end of the engine. The inertia mass F may be structurally united with the turbo-clutch G, as shown in Fig. 7.
Patent GB-1147951-A (GB)
Title: Gas-turbine installation with at least two gas turbine type gas generators
IPC: F02C6/02
Filed: 1966-04-27
Abstract: 1,147,951. Gas turbine plants. LICENTIA PATENT-VERWALTUNGSG.m.b.H. April 27, 1966 [April 28, 1965], No. 18458/66. Heading FiG. The invention relates to a gas turbine plant comprising at least two gas turbine type gas generators, the gas from the gas generators being utilized to drive a power turbine. The plant shown comprises three gas generators 12 disposed in a horizontal plane, the gas from the generators passing through the inlet structure 11 to act on the rotor blades 22 of the power turbine. The power turbine shaft is supported in bearings 24, 25 and is connected to the shaft of the electric generator 28 through a coupling shaft 26. The exhaust outlet from the power turbine is formed by concentric tubular members 20, 21. The inlet structure 11 between the gas generators and the power turbine 13 is shown in Fig.2, the gas duct from the left hand gas generator 12 changing from a circular section adjacent the gas generator to a semi-circular duct adjacent the power turbine. The duct from the right hand gas generator 12 similarly changes from a circular section adjacent the gas generator to a semi-circular duct adjacent the power turbine, the two semi-circular ducts together forming a substantially annular duct through which gases may flow to the radially outer half of the power turbine inlet guide blades 23. The gas duct from the centre gas generator 12 changes from a circular section adjacent the gas generator to an annular duct adjacent the power turbine through which gases may flow to the radially inner half of the power turbine.
Patent GB-363670-A (GB)
Title: Improvements in or relating to transparencies or the like
IPC: G09F13/04
Filed: 1930-06-17
Abstract: 363,670. Signs. ESTIL-LES LLAVOR•, E. and SANABRA, P. S., 448, Calle de Cortes, Barcelona, Spain. June 17, 1930, No. 18473. Convention date, June 17, 1929. Void [Published under Sect. 91 of the Acts]. [Class 3 (ii).] An. advertising transparency comprises two translucent sheets, the front one carrying a picture, and an intermediate opaque sheet with cut-out portions corresponding with parts of the picture, these parts being emphasized when the transparency is viewed by transmitted light. The translucent sheets may be of paper, cloth, &c. with the picture printed, or otherwise applied, while the opaque sheet may be of cardboard, papier mÔchÚ, &c., and may have coloured transparent insertions of celluloid, gelatine, or tissue paper.
Patent GB-1469947-A (GB)
Title: Method of and apparatus for producing double layered hollow articles by injection blow moulding
IPC: B29B11/08
Filed: 1974-04-26
Abstract: 1469947 Injection-blow-moulding; multilayered articles NISSEI PLASTICS INDUSTRIAL CO Ltd 26 April 1974 [27 April 1973] 18504/74 Heading B5A Double layered hollow articles are produced by a blow-moulding process wherein first and second parisons are injection-moulded in respective injection moulds, the first parison is introduced into a blow-mould and blowmoulded therein and the second parison is then inserted into the article formed and expanded into contact therewith. In Fig. 2, the apparatus comprises a triangular turntable 1, having faces 2, 3, 4 each carrying a first core 6 and a second core 7, and rotatable in 120 degree steps between injection, blow-moulding and product removal stations. First and second parisons a, b are formed on cores 6, 7 in injection moulds 8, 9 respectively by injection cylinders 18. Blowmoulds 11, 12 are mounted on platen 13 which is both rotatable and reciprocable on shaft 15 by motor 17 and hydraulic cylinder 14 respectively. While first and second parisons a, b are being injection-moulded, the first parison from the preceding cycle is blow-moulded to form an outer layer c in mould 11, while the second parison from the preceding cycle is blow-moulded in mould 12 to form the inner layer d of a final article e. Moulds 8, 9, 12 are opened, cylinders 18 and plate 13 retracted; then table 1 is rotated 120 degrees about shaft 5 and platen 13, 180 degrees about shaft 15. Platen 13 and cylinders 18 are then advanced and moulds 8, 9, 12 closed, moulds 11, 12 engaging the last-formed parisons a, b, mould 11 containing an outer layer c. Previously finished article e is removed at the third station. A further cycle of injection and blowing then takes place. Reference has been directed by the Comptroller to Specification 1,329,257.
Patent GB-613345-A (GB)
Title: Improvements in and relating to electric capacitors
IPC: H01G4/22
Filed: 1946-06-21
Abstract: 613,345. Condensers. BRITISH THOMSONHOUSTON CO., Ltd. June 21, 1946, No. 18696. Convention date, June 25, 1945. Drawings to Specification. [Class 37] Condenser spacers are impregnated with cotton-seed oil, either alone or combined with up to 50 per cent pentachlor diphenyl (55 per cent chlorine) to increase the dielectric constant, and 0.5 per cent of a stabilizer such as anthraquinone or chlorinated anthraquinone (preferably betachlor anthraquinone) to lengthen the life of the condenser. In the example kraft tissue spacers are vacuum impregnated with cotton-seed 'oil heated to 75‹ C. before being run in. Mineral oil such as that derived from Gulf Coast Crudes, and having a viscosity not less than 55 secs. Saybolt at 37.8‹ C., and a pour point not higher than -40‹ C. may be blended with the cotton-seed oil to obtain lower pour point characteristics.
Patent GB-629260-A (GB)
Title: Improvements in or relating to electric signalling or control systems
IPC: H03G11/02
Filed: 1946-06-21
Abstract: 629,260. Variable time constant circuits. STANDARD TELEPHONES & CABLES, Ltd., McWHIRTER, E. M. S., and DUNN, R. H. June 21, 1946, No. 18737. [Class 40 (viii)] A variable time constant circuit comprises a reactive element in combination with two non-linear resistors normally biassed to a state of low conductivity but arranged so that one or other is biassed to a state of high conductivity on a rapid change of applied potential. The invention is applied to apparatus in which the rate of impulsing of a contact IP is required to be measured on a meter M. Thus the contact IP may be operated by a kilowatt-hour meter and the meter M required to register kilowatts. Contact IP alternately charges C2 negatively and discharges it into C1 which in turn discharges over the arms of the potentiometer R6 ... R10 so that the point A varies in potential about a mean determined by the rate of impulsing of IP. Condenser C1 is arranged as part of a negative feed-back circuit for the valve VI, thereby ensuring a linear relation between the depression of the mean potential of the point A and the rate of impulsing. The potential of this point is communicated to the grid of valve V2 through a time constant circuit comprising condenser C3 and a resistance comprising resistors R8, R9 and rectifiers D1, D2 in series-parallel. The standing voltages across R8, R9 are greater than the fluctuations due to the impulsing, so that for a steady rate of impulsing, when the grid of V2 has attained the potential of the point A the rectifiers D1, D2 are backbiassed to provide a high time constant and efficient smoothing. If, however, the rate of impulsing increases or decreases suddenly, the potential of the point A falls or rises compared with that of the grid of V2 and D1 or D2 becomes forward-biassed at the peaks of the fluctuations, to reduce the time constant of the circuit and permit of rapid equalization of the potentials of A and the grid of V2. Variations of the grid potential of V2 are registered on the meter M in the cathode circuit of the valve. Specifications 603,137 and 629,244, [Group XXXVI], are referred to.
Patent GB-490478-A (GB)
Title: Improvements in ignition devices for electric discharge devices having liquid cathodes
IPC: H01J13/38
Filed: 1937-07-06
Abstract: An ignition electrode, which is permanently immersed in the liquid cathode to facilitate starting of the arc in an electric discharge device, is composed mainly or wholly of a homogeneous compound of titanium oxide with one or more of the oxides of barium, strontium or calcium, the compound having the perowskite structure and containing rather less oxygen than corresponds to the normal stoichiometric ratio.  A mixture of titanium dioxide and alkaline earths may be heated for 30-60 minutes to 1500-1800 DEG  C. in hydrogen.  To obtain a fine structure the mixture may be heated in air at a low temperature and is then partially reduced at a higher temperature.
Patent GB-643953-A (GB)
Title: Improvements in or relating to high voltage disconnecting switches
IPC: H01H31/28
Filed: 1948-07-14
Abstract: 643,953. Air-break switches. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. July 14, 1948, No. 18918. Convention date, Aug. 21, 1947. [Class 38(v)] A double-throw, high-voltage air-break, disconnect switch comprises. a movable contact arm 40 engageable with either of two spaced fixed contacts 14, 20. The operating mechanism is similar to-that of Specification 563,924 and comprises a rotatable insulator 30 carrying a crank 34, 72, having a roller 74 co-operating with cam slots 78, 80 in a housing 42 pivoted at 66 on a fixed bracket 24 in which the insulator 30 is pivoted. The contact arm 40 is pivotable about its longitudinal axis in bearings 54 and 44 in the housing, and has a forked extension 50 engaging opposite sides of the crank 72. With the contacts 20, 40 in engagement, Fig. 1, counter-clockwise rotation of insulator 30 first causes the contact 40 to rotate about its longitudinal axis until it is released from spring contact 20. Further rotation of the insulator causes the roller 74 to enter the inclined part of slot 78 and pivot the housing and arm 40 clockwise, Fig. 2, about the axis 66, until the roller reaches the junction of slots 78, 80, when the arm 40 is substantially vertical. Continued rotation of the insulator, causes the roller 74 to enter slot 80 and the housing is tilted over to the right, Fig. 2, into a horizontal position where the contact arm 40 is rotated about its longitudinal axis into engagement with contact 14. The initial and final rotary movements of the contact 40 without pivotal movement of the housing are caused by the crank 72 engaging the forks 50 whilst the roller 74 is in horizontal portions of the slots 78, 80. The housing also carries a projection 82 which enters a notch 84 on the crank 34 when the arm 40 is vertical, so that continued rotation of the crank positively forces the arm 40 overcentre by means of the parts 82, 84, in case the roller 74 becomes jammed at the junction of slots 78, 80.
Patent GB-1482054-A (GB)
Title: Two-level signalling circuit
IPC: H04Q1/38
Filed: 1975-05-06
Abstract: A two-level signalling circuit for correction of dial pulses is described. Two separate delay circuits (R1 to R3; C1, T3: R1 to R3, C'1, T4) trigger a bistable circuit (R, R9, R10, R'9, R'10, T2, T'2) into one of its two conditions. The delay circuits respond to the pulse duration and the duration of a pulse gap in order - as already mentioned - to trigger the bistable circuit. In each of its two conditions, the bistable circuit in each case triggers a monostable circuit (R4 to R8, C2; R'4 to R'6, R7, C'2). The output signals of the monostable circuits are fed to circuits to change the time delay, which in turn supply output signals of the required duration. <IMAGE>
Patent GB-710545-A (GB)
Title: Clip-on plant support
IPC: A01G17/08
Filed: 1952-07-28
Abstract: A strip of polyvinyl chloride is bent at each end to form a spring clip, one end being passed round the cane and the other around the stem of the plant.
Patent GB-712015-A (GB)
Title: Improvements in and relating to magnetic scaling or counting circuits
IPC: G11C19/04
Filed: 1952-07-28
Abstract: 712,015. Digital electric calculating-apparatus. GENERAL ELECTRIC CO. July 28, 1952 [July 27, 1951], No. 19014/52. Class 106 (1) A magnetic counter or stepping register comprises a first magnetic circuit with means for altering the magnetization thereof, and a second magnetic circuit responsive to alterations in the magnetization of the first magnetic circuit, the coupling of the two circuits including delay means and means for decoupling in respect of magnetic influences originating in the second circuit and directed towards the first circuit. In an embodiment comprising a ring-of-four counter, pulses are applied on buses 16, 17, to parallel windings on magnetic cores 12 ... 15. Assuming that core 12 is initially in a state of magnetism opposite to that of the other three cores and opposite to the state induced by the input pulses on buses 16, 17, then the first input pulse reverses the state of the core 12 and this causes an output pulse on winding 12c which is delayed in a network or similar delay device 18. After the input pulse is terminated, the output from the delay device reverses the state of the next core 13. Each input pulse steps the counter forward in a similar manner, an output being available after each four steps at terminals 32, 33. Rectifiers 22 ... 29 prevent reverse operation and other undesirable effects. In a second embodiment, Fig. 4 (not shown) the cores are arranged to form a stepping register, data pulses being applied to the input of the L.H. core at times intermediate the stepping pulses on the common buses, The entered data may be held in the register for any length of time and may be read out at a higher speed.
Patent GB-403899-A (GB)
Title: Improvements in and relating to radiant heat installations
IPC: F24D3/16
Filed: 1933-07-05
Abstract: 403,899. Radiators for heating buildings. DUTTON & CO., Ltd., H. W., 25, Victoria Street, and CAMPLING, H., 113, Norwood Road, Herne Hill, both in London. July 5, 1933, No. 19063. [Class 64 (ii).] Radiant heat is propagated from heating pipes b by means of flat metallic plates a<2>. supported by the pipes. Each plate may be curved to form a seating e for the pipe and is attached to the latter by ties c. A non-radiating surface such as an asbestos shield k, Fig. 8, may be fitted over the pipe to reduce heat losses. The shield may be covered with metallic foil on top or bottom or it may be replaced by a metallic plate of similar shape, the lower plate a<2> then being dispensed with. In a further modification, a flat horizontal shield may be placed over the pipe in the arrangement of Fig. 1, or both shield and reflecting plate may be on the same side of the pipe as in Fig. 11.
Patent GB-767745-A (GB)
Title: Improvements relating to oil lamps
IPC: F21V9/00
Filed: 1954-06-30
Abstract: 767,745. Wick lamps. SANDERSON & CO. (LAMPS), Ltd., A. W., and COOK, B. R. June 30, 1955 [June 30, 1954], No. 19113/54. Class 75(4) In an oil lamp comprising a rectangular casing 1 housing a wick burner and having a door and lenses 2 fitted in apertures in the sides of the casing, each lens holder 3 has a flange 6 adapted to be detachably held in contact with the inner surface 8 of the casing by catches which are engaged by the flange by rotary action. The catches comprise upper and lower parallel strips or wires 9 supported proud of the inner surface of the casing by sleeves 10 which may be formed integrally with the casing. The flange has a cut-away segment 7 and in attaching the holder to the casing the part of the flange opposite the cut-away segment is inserted under one of the wires 9 and the flange held in contact with the inner surface 8 of the casing; the holder is then rotated until it engages under both wires 9.
Patent GB-463160-A (GB)
Title: Method for the production of air-permeable sheet materials of or containing rubber
Filed: 1936-07-10
Abstract: Air-permeable rubber sheets or rubberized fabrics are made by applying to a base a layer of a frothed or foamed rubber dispersion, subjecting to a sudden rise in temperature, e.g. to above 100 DEG C., for a sufficient time to burst substantially all the bubbles, and completing, if necessary, the setting of the layer.  The base may be smooth or uneven, e.g. a fabric, leather, or a vulcanized rubber belt with a fabric impression, the coating being stripped off if a rubber sheet is required.  Natural or artificial aqueous dispersions of rubber, balata, or guttapercha, diluted or concentrated, and vulcanized if desired, may be used, and may comprise coagulated vulcanized, reclaimed, or waste rubber.  Mineral oil, wax, and substances causing delayed coagulation, e.g. sodium or potassium silicofluoride, or a mixture of zinc oxide and ammonium sulphite may be added.  The heat may be applied by passing the coated base over or between heating surfaces, or radiant heat or hot air may be applied to the foam only.  In an example, the coated fabric is passed over a table heated to 120 DEG  C.  The fabric may be impregnated, before or after coating, with dilute latex or a dilute mineral oil or paraffin wax emulsion.  The coated fabric or porous sheet may be pressed between plain or patterned rollers.  Specifications 332,525, [Class 70], 416,904, and 419,015 are referred to.