baber/WOPTO huggingface dataset:
Patent GB-911131-A (GB)
Title: Improvements relating to servo-controlled drives
Inventor: WILLIAMSON DAVID THEODORE NELS
IPC: B23Q5/50
Filed: 1959-11-13
Abstract: 911,131. Automatic speed and acceleration control. FERRANTI Ltd. Nov. 9, 1960 [Nov. 13, 1959], No. 38508/59. Class 38 (4). The work-table 10 of a machine tool is driven to the right at a steady velocity in response to a control signal applied over line 32 to a device 31 which compares the control signal with one provided by pick-off 23 and affords an error signal over line .34. Short-range hydraulic actuators A, B, C are adapted to operate cyclically in sequence to drive the table. When the piston of actuator C closes switch RC, relay XB/4 is energized so that the error signal on line 34 is applied to valve 15B, thereby starting piston 13B on its rightward movement. The output from comparator 24B is also applied to valve 15B to afford an additional control voltage, proportional to the difference between the velocities of the table and the piston, which acts as a starting boost to the piston. The movement of the piston operates switch PB-SB in turn, and when the piston has reached the speed demanded by the error signal, clutch 16B is engaged by switch QB so that actuator B shares the load with actuator C. When piston 13B reaches and closes contacts RB it energizes relay XA/4 to start actuator A by applying the error signal to valve 15A. Actuation of switch SB de-energizes relay XB/4 to remove the error signal from valve 15B and to disengage the clutch 16B. The idle piston 13B is then restored to its rest position, relay YB/3 being energized so that a return signal is applied to valve 15B from terminal 35. In a modification, the table is driven in either direction by an error signal which varies in sense, each actuator being provided with a further group of switches, similar to the group PB-SB, which are operated sequentially as the piston makes an active stroke in the opposite direction, Fig. 6 (not shown). A changeover switch responsive to the sense of the error signal connects the relays to the group appropriate to that sense. In some cases, an oncoming actuator may receive a starting signal before its idle piston has been transferred to its rest position from its previous active stroke, so causing the piston to lose station over the subsequent cycles of operation. To prevent such misoperation, a supplementary starting boost is provided under these circumstances. Where the control signal represents the required position or acceleration of the table rather than its velocity, the pick-off 23 is replaced by a device responsive to the quantity controlled.
Patent GB-1528173-A (GB)
Title: Cutting devices on textile machines
IPC: D03D49/70
Filed: 1975-09-19
Abstract: 1528173 Weft cutter SULZER BROS Ltd 19 Sept 1975 [20 Sept 1974] 38558/75 Heading D1E A weft cutter comprises a fixed blade 7 and a movable blade 8 pivotally mounted on a shaft 11 and having a wheel 13 in rolling contact with a surface 14 which is vertically reciprocable, the surface 14 being mounted on a two-armed lever 22 and being driven by a face cam 26.
Patent GB-874297-A (GB)
Title: Feeding mixtures for tropical birds
IPC: A23K1/16
Filed: 1959-11-13
Abstract: A fat-free, day and stable breeding feed mixture for young tropical birds, such as weaver finches and canaries, has a consistency approximating to that of grits or flour and contains rusk-, hay-, corn- and/or leguminous flour, wood charcoal, dried insects or their intermediate development stages, at least one sugar or sugar-containing product, a calcium-containing compound and a pulverulent vitamin preparation which contains at least vitamins A, B, D and E.  A preferred mixture contains at least 0,8% of the vitamin preparation, at least 4% of grape sugar, at least 5% of bees' honey, at least 2% each of leguminous flour and hay flour, 30% of curds and 13% of dried milk powder.  For exceptionally sensitive and valuable young birds, 25 to 35% of bees' honey and 1% of the vitamin preparation should be included in the mixture.
Patent GB-1272452-A (GB)
Title: Pharmaceutical preparations comprising a thioacetamide derivative
IPC: C07D213/59
Filed: 1969-08-01
Abstract: 1,272,452. Antisecretory &c medicines. SCIENCE UNION ET CIE SOC. FRANCAISE DE RECHERCHE MEDICALE. 1 Aug., 1969 [1 Aug., 1968], No. 38709/69. Heading ASB. Pharmaceutical compositions having antisecretory and anti-ulcer activity comprise a carrier and the compound 2-pyridyl thioacetamide or a salt thereof. They may be in conventional forms for oral, parenteral and rectal administration, dosage units containing from 50 to 500 mg. of the active compound.
Patent GB-1376069-A (GB)
Title: Hand-operated carpet stretcher
IPC: A47G27/04
Filed: 1972-08-21
Abstract: 1376069 Carpet stretchers ROBERTS CONSOLIDATED INDUSTRIES Inc 21 Aug 1972 [23 Aug 1971 27 Dec 1971] 38955/72 Heading A4X A carpet stretcher comprises a head 10 having teeth 12, a shaft 14 connected to an adapter 16 on the head and sliding in a tube 32 that can be locked at the desired extension position in a tube 28, a lever 18 pivoted at one end to the adapter, and a link 22 pivoted at its ends to the tube 32 and to an intermediate point 36 on lever 18, the lever 18 being locked to the link 22 at a selected position by a pawl and ratchet means 42, 34 which is releasable to allow movement of the lever 18 and hence of the head 16. The ratchet comprises an arcuate rack 34 rigid with link 22 as shown, or with lever 18, and the pawl 42 is pivoted at 40 to the lever 18 as shown, or to the link 22. The pawl 42 is released against the bias of a tension spring 46 by a lever 48 pivoted on lever 18 and connected to the pawl by a rod 44. Alternatively, a rod may force the pawl into engagement against the bias of a compression spring. The head 10 comprises a plate 11 swivellably mounted to the adapter and locked thereto by a lever 17. A shoe 15 on plate 11 which bears against shaft 14 can be adjusted in height by a screw to vary the attitude of the plate 11.
Patent GB-1094296-A (GB)
Title: Method and apparatus for transferring articles between two stations
Inventor: CAFFREY ANDREW
IPC: B23Q7/04
Filed: 1964-09-25
Abstract: 1,094,296. Work-transferring. COVENTRY RADIATOR & PRESSWORK CO. Ltd. June 23, 1965 [Sept. 25, 1964], No. 39069/64. Heading B3B. [Also in Division H1] A magnetic head for a conveyer comprises a cylindrical permanent magnet 10 having a concentric bore 11 containing a fluid-operable piston 12 coupled to a non-magnetic member 16 arranged to separate magnetisable articles from the lower face of the magnet 10. As described, the conveyer is used for transferring workpieces between the operating stations of two sheet steel working machines, the workpieces being separated from the lower face of the magnet 10 by injection of compressed air at 22 to the upper end of the bore 11. Seals 13 may permit the flow of compressed air to clean the brass member 15 during each operation. A return spring (not shown) may be included.
Patent GB-392369-A (GB)
Abstract: 392,369. Transformers. SHELTON, W. G., 1709, Locust Street, St. Louis, Missouri, U.S.A. June 16, 1932, No. 17055. [Classes 38 (ii) and 38 (iv).] Hair-waving apparatus comprises a number of heaters 21, a transformer 2 with a primary winding 3, the number of turns in which can be adjusted by a switch 13, and a secondary winding 4 supplying the heaters 21, and a voltmeter 8 on the secondary side calibrated in a manner to translate the voltage readings into readings indicating the corresponding times of application of the heaters. The reading 10 corresponding to the most favourable time of application is distinctively marked, and when the apparatus is in use, the voltage is adjusted by means of the switch 13 to bring the needle as nearly as possible to this mark.
Patent GB-1064847-A (GB)
Title: Process for producing hydroquinone
IPC: C07C46/02
Filed: 1963-10-04
Abstract: In a process for producing hydroquinone by oxidizing aniline to benzoquinone, extracting the benzoquinone with steam and treating the benzoquinone-steam mixture with a reducing agent, the extracting step is effected in a cone-shaped distillation apparatus.  In an example, the oxidizing and reducing steps are carried out with MnO2/H2SO4 and Fe(dust)/H2O respectively.
Patent GB-923110-A (GB)
Title: Rectifier equipment
Inventor: ROBINSON THOMAS PHILIP
IPC: H01L23/473
Filed: 1961-11-02
Abstract: 923,110. Cooling semi-conductor devices. STANDARD TELEPHONES & CABLES Ltd. Nov. 2, 1961, No. 39283/61. Addition to 921,851. Class 37. Rectifier equipment includes a tank forming a reservoir for fluid into which project one or more fins integral with and extending from one side of a thermally conducting bar-shaped member (heat sink) which has on its other side attachment means for a plurality of rectifiers, these attachment means being accessible from outside the tank. In the embodiment of Figs. 1 (not shown) and 2 a frame of side and end angle members 2 is stuck to the heat sink 1 and held by external bolts and clamping members 14, 15 against the tank wall, gasket 11 preventing oil leakage. A plurality of semi-conductor rectifiers 18 are screwed into the external face of the heat sink which has a fin 7 to which cables or bus-bars may be attached. (The rectifiers are in line along the heat sink and consequently only one can be seen in Fig. 2.) The heat sink, which is also of good electrical conductivity, is preferably made by extrusion, aluminium being a suitable material for the purpose. In other embodiments, Figs. 3 and 4 (not shown), the heat sink is attached to the inside of the tank. One embodiment uses a frame similar to that of Fig. 2 stuck to the heat sink but with its projecting angle parts clamped against the inside of the tank with an insulating member and a gasket between it and the tank wall. Within the tank connecting bus-bars may be attached to the outer members of the heat sink fins. The other embodiment is a variant on the foregoing embodiment in which the frame is replaced by integral shoulders projecting from the heat sink. Fig. 5 shows power conversion equipment consisting of an oil-filled tank 50 on two sides of which are air-filled compartments 51 containing rectifiers (not shown) fixed on several parallel mounted heat sinks 1 of any of the forms described. The compartments 51 may also contain interconnecting bus-bars and protective fuses (not shown). Besides cooling the heat sinks the tank contains a transformer and/or transductor, chokes and other components. The tank itself may be cooled by cooling tubes, by radiators on otherwise unused walls, or by a circulating water pipe in close thermal contact with the tank walls.
Patent GB-1317486-A (GB)
Title: Heat and abrasion-resistant copolymer and method for preparing the same
IPC: C08G73/10
Filed: 1970-08-14
Abstract: 1317486 Insulated wire HITACHI Ltd HITACHI CABLE Ltd and HITACHI CHEMICAL CO Ltd 14 Aug 1970 [20 Aug 1969[ 39369/70 Heading B2E [Also in Division C3] Copper conductor wires are insulated by coating with a solution comprising a copolymer (C), or by wrapping with a tape of (C), and subsequently converting (C) into a copolymer (D) by dehydration-crosslinking, e.g. by heating at 100-450C. Copolymer (C) has repeating units (A) and (B) Ar, Ar', and Ar" are aromatic nuclei, Y and Y' are CO or SO 2 ; Y and NH are in m- or prelationship, as are Y' and NH. (A) : (B) ratio is (9.5 to 0.5) : (0.5 to 9.5). Solutions of (C) may contain LiCl or MgCl 2  to improve solubility. Naphtha, xylene, toluene, or benzene may be added to the solvent. The solvent may be N-methyl-2-pyrrolidone or N,N'-dimethylacetamide.
Patent GB-935605-A (GB)
Title: Method of recovering silicon dioxide
IPC: C01B33/18
Filed: 1961-11-03
Abstract: Finely divided silica having an average particle size of 2-200mm  and hydrogen fluoride are produced by hydrolysing a silicon fluorine compound in the gaseous phase and adding a cooling and diluting gas. Silicon tetrachloride may be hydrolysed in a flame of burning hydrogen or hydrogen-containing gas.  The cooling and diluting gas may be steam, air, nitrogen, carbon dioxide, a noble gas, exhaust gas, or a portion of the product gas after removal of silica and hydrogen fluoride followed by cooling.  The gas may be added around the flame or at the end of the reaction zone.  The amount of gas added may be 1-8 times the volume of gaseous suspension formed in the reaction.  Cooling may be effected to a temperature between the dew point and 600 DEG C.  The gas mixture may be passed through a plurality of centrifuges in series and an absorber in order to remove the silica and hydrogen fluoride respectively.  An example is given.
Patent GB-1396506-A (GB)
Title: Arc welding
IPC: B23K9/28
Filed: 1971-08-24
Abstract: 1396506 Welding by fusion LUCAS ELECTRICAL CO Ltd 23 Aug 1972 [24 Aug 1971] 39530/71 Heading B3R Gas-shielded arc welding apparatus for circular path face welds of 0À375-0À75 inch diameter, as e.g. in welding a rod 25 within an apertured plate 17, comprises an elongated torch 12 which is releasably universally pivotally supported on a carrier 16 and has one end provided with an electrode 13 and its opposite end releasably universally pivotally connected to a crank member 17 radially adjustably connected to a belt-driven wheel 21. A spring 24 retains the universal pivotal connections together. Gas, cooling water and electrical connections are made through a torch handle 14.
Patent GB-1098734-A (GB)
Title: Stabilised chlorofluoroalkane-polyol compositions
Inventor: HOUSLAY RALPH JOHN GILBERT
IPC: C08K5/32
Filed: 1965-09-16
Abstract: A stabilized chlorofluoroalkane-polyol composition comprises a chlorofluoroalkane of the methane or ethane series, a polyol useful for preparing polyurethane foams by reaction with polyfunctional isocyanates in the presence of chlorofluoroalkane blowing agents, and as stabilizer 0.05% to 5% calculated on the weight of the chlorofluoroalkane of an aromatic nitrocompound of formula RNO2 wherein R is a substituted phenyl or naphthyl radical.  The polyol may be a polyether prepared from an alkylene oxide and a sugar alcohol, trimethylolpropane or glycerol; an ester of a dicarboxylic acid and a polyalkylene glycol; a polyamide prepared from a polyhydric alcohol and tolylene di-isocyanate; or a condensate of an alkylene oxide with a di- or tri-amine.  The chlorofluoroalkane may be trichlorofluoromethane. The nitro compound may be nitrobenzene, a dinitrobenzene, a nitrotoluene, a nitrophenol, a nitroaniline, a nitrotoluidine, a nitroanisidine or a nitronaphthalene.  The compositions may also contain triethanolamine as a cross-linking agent.ALSO:A stabilized chlorofluoroalkane-polyol composition comprises a chlorofluoroalkane of the methane or ethane series, a polyol useful for preparing polyurethane foams by reaction with polyfunctional isocyanates in the presence of chlorofluoroalkane blowing agents, and as stabilizer 0.05 to 5% calculated on the weight of the chlorofluoroalkane of an aromatic nitrocompound of formula RNO2 wherein R is a substituted phenyl or naphthyl radical.  The polyol may be a polyether prepared from an alkylene oxide and a sugar alcohol, trimethylolpropane or glycerol; an ester of a dicarboxylic acid and a polyalkylene glycol; a polyamide prepared from a polyhydric alcohol and tolylene di-isocyanate; or a condensate of an alkylene oxide with a di- or tri-amine.  The chlorofluoroalkane may be trichlorofluoromethane. The nitro compound may be nitrobenzene, a dinitrobenzene, a nitrotoluene, a nitrophenol, a nitroaniline, a nitrotoluidine, a nitroanisidine or a nitronaphthalene.  The compositions may also contain triethanolamine as a cross-linking agent.
Patent GB-1032439-A (GB)
Title: Improvements in or relating to tools for removing an article from a holder
IPC: H01R43/22
Filed: 1963-10-08
Abstract: 1,032,439. Holding and picking-up tools. PYLE-NATIONAL CO. Oct. 8, 1963 [July 11, 1963], No. 39669/63. Heading B4W. [Also in Division E2] A tool for removing contaets from electrical connectors comprises a pair of semicylindrical members 52, 53 connected together along longitudinal edges by a hinge and engageable in wrapped relation around a sheathed conductor wire 41a which carries a contact socket 26. The members 52, 53 comprise semi-cylindrical portions and portions 64, 66 of reduced diameter which are adapted to engage the bare wire 39. The tool is moulded from synthetic plastics material. In use the tool is placed around the wire and then grasped in the hand and urged into the opening 49a. As the tool is urged into the opening it is compressed radially and urges the collet tines 48 outwardly into the mounting 24 to prevent them from interfering with the sliding and withdrawal of the contact 26. In a modification the walls at the extremity of the contact-engaging portion converge inwardly to form a contact mouth of reduced diameter.
Patent GB-1121483-A (GB)
Title: Photographic copying apparatus stripping mechanism
IPC: G03D9/00
Filed: 1965-09-20
Abstract: 1,121,483. Delivering sheets. GEVAERT-AGFA N.V. 20 Sept., 1965 [22 March 1965], No. 39950/65. Heading B6H. [Also in Division G2] Two contacting sheets, the leading edge of one of which is slightly in advance of the other, are separated by gripping the advanced edge and then imparting to the assembly a thrust which causes the other sheet to separate from the gripped sheet and take a different direction. As shown, the exposed light-sensitive sheet 14 is introduced into the processing apparatus through an upper channel, where it is contacted by a roller 11 wetted with processing liquid. The image-receiving sheet 15 enters through a lower channel, and does not come into contact with sheet 14 until the two pass together between pressure rollers 13, where the image transfer is effected. If the leading edges of sheets are level when they enter the apparatus, the leading edge of top sheet 14 will be in advance of that of bottom sheet 15 when they reach rollers 13, since sheet 15 has taken a longer passage through the apparatus. From rollers 13 the two sheets pass, in contact, between guide plates 16 which can pivot downwards about a point 17 under the action of a solenoid 18. Beyond guides 16 is a further pair of rollers 19, and as the leading edge of top sheet 14 passes between these, it trips a microswitch 20 which closes the energizing circuit of solenoid 18, which pivots the guides 16 down into the position of Fig. 2 (not shown). This imparts a sharp bend to top sheet 14 which lower sheet 15 is unable to follow, its leading edge still being free. Thus the lower sheet separates away from the top sheet, and continues forward in its own plane to pass between guides 23.
Patent GB-1192987-A (GB)
Title: Line Follower
IPC: G06K11/00
Filed: 1967-09-05
Abstract: 1,192,987. Photo-electric line followers. GERBER SCIENTIFIC INSTRUMENT CO. Sept. 5, 1967 [April 17, 1967], No. 40440/67. Heading G1A. A line follower comprises an electronic tube in which an electron beam may be moved along a circular scan path, means for optically superimposing the scan path and the line to be followed means for generating pulses as the beam intersects the line and means for moving the tube in a direction related to the angular position at which at least some of the output pulses occur. The tracing head comprises a vidicon tube 40, Fig. 2, which scans in a circle by means of an oscillator 54 and phase splitter 56. The vidicon output pulses are fed with opposite polarity to gates 84 and 86 which are opened for consecutive portions of each circular scan by a variable frequency oscillator 102. So long as the pulses from the vidicon are symmetrical about the instant when gate 84 closes and gate B opens the pulses passing through the gates are of equal duration and when added at 100 produce a symmetrical error signal 148 which is integrated by a circuit 106, 108, 110 to give a zero D.C. error signal. If the vidicon pulses are displaced from this position, a non- zero signal is produced and used to alter the phase of the oscillator 102 to minimize the error signal. The phase of the oscillator 102 is thus indicative of the direction of the line relative to the centre of the scanning circle. The phase of oscillator 102 is compared with oscillator 54 applying its output to open gates 130, 132 to which are applied the outputs of phase splitter 56. The outputs of gates 130, 132 are filtered to produce the mean D. C. levels Ex, Ey, which are used as co-ordinate drive signals to drive the tracing head along the line. A manual steering circuit, Fig. 7, may be provided to steer the tracing head on to a line or to assist it to choose the right line at an intersection. The output of oscillator 102 is varied in phase by a manually actuated knob 166 and the phase is detected by 170 relative to the output e 2  of phase splitter 56. The output of phase detector 170 is fed to integrator 106, 108, 110 to alter the phase of oscillator 102 until the tracing head drives in the direction indicated by the knob 166. The degree of authority of the manual steering is adjusted by switching in or out resistors 178, 180, 182 by a switch 184. A torquer 186 provides feedback to the knob 166 to give it "feel".
Patent GB-1307629-A (GB)
Title: Balanced cutting assemgly for a mower
IPC: A01D34/535
Filed: 1970-08-24
Abstract: 1307629 Cutting assembly for mowers MOTT CORP 24 Aug 1970 [8 Sept 1969] 40673/70 Heading A1F A statically and dynamically balanced cutting assembly 21 in a mower comprises a rotatable shaft 26, a plurality of radially extending cutting blades 37 supported by ears 36 axially and circumferentially spaced on said shaft in a predetermined pattern e.g. helically and in four rows 46, 47, 48, 49, each pair of ears 36 being axially spaced from the adjacent pair by a distance a to effect the cutting of a continuous swath, and at least one radially extending balancing cutting blade 59 supported by ears 54, 55, 57, 58; the blades and ears 59 and 54-58 being substantially identical to blades 37 and ears 36. The balancing blades and ears are axially and angularly located around the shaft out of conformity with said pattern to effect static and dynamic balance.
Patent GB-1029157-A (GB)
Title: Improvements relating to apparatus for attaching pronged devices to fabric or other flexible material
Inventor: WILSON CLARENCE MARTIN
IPC: A41H37/02
Filed: 1963-10-16
Abstract: 1,029,157. Attaching pronged fasteners. THOMAS WALKER Ltd. Oct. 15, 1964 [Oct. 16, 1963], No. 40765/63. Heading B4C. The subject matter of this Specification is substantially identical to that of Specification 1,029,158 but the claims relate to the means 110 for mechanically loading the mandrel 7 with the back-plates between each clenching operation, the loading of the back plates being effected by a relative movement between the mandrel and the back-plate loading member. The loading member 110 described in the above Application is moved by a rack-andpinion device over a stationary mandrel 7, but in the modification shown in Fig. 13 of the present Application, the mandrel 7a is formed with a rack 123a and is moved by a motor 128a under a stationary magazine 11a for the back plates.
Patent GB-1460024-A (GB)
Title: Sampling of molten steel
IPC: G01N1/12
Filed: 1973-08-30
Abstract: 1460024 Sampling molten steel AMALGAMS CO Ltd and BRITISH STEEL CORP 25 Nov 1974 [30 Aug 1973] 40944/73 Heading G1B A method of sampling molten steel comprises immersing a U-bend fused quartz tube 10 open at both ends into the molten steel so that as molten steel flows in at one end air can flow out through the other. The tube may have a longer leg secured within a cardboard tube 12 by means of fire clay 14, and the other end of the cardboard tube may be fixed to a metal pipe 16.