baber/WOPTO huggingface dataset:
Patent GB-1399789-A (GB)
Title: Positioners
IPC: G05G5/06
Filed: 1973-08-29
Abstract: 1399789 Shovelling machines CATER PILLAR TRACTOR CO 29 Aug 1973 [29 Aug 1972] 40721/73 Heading E1F [Also in Division F1] When a control lever 10, Fig 1, is pivoted about a pin 24 a lever 25 is pivoted downwards about a pin 30 to move a spool 32 of a valve 14 which causes retraction of a cam 46. A magnet 36 on the lever 2 closes a normally open switch 40 to energise a solenoid 42 which holds down a ferrous bar 34 attached to the lever 28. Thus the control lever 10 is held in the pivoted condition and the valve 14 remains open until a magnet 54, moved by the cam 46, causes a normally closed switch 38 to open to de-energise the solenoid 42 and allow the valve 14 to return to the neutral position. As described the ram 46 controls the tipping of the bucket of an excavator and a further valve 12, which is operated by pivoting the lever 10 about a pin 18, controls a ram which raises the bucketsupporting arms The electromagnetic control circuit holds the valve 14 open until the bucket has reached the level position ready for the next digging movement. Fig 2 shows an embodiment in which a ram 64 for raising bucket arms 116 is also controlled electromechanically. A magnet 114 on the arms 116 opens a normally closed switch 106 when the arms are raised to a preselected point. This deenergises solenoid 42 and releases a bell-crank 62 so that the valve 12 may return to its neutral position. Two magnets 122, 124 attached to the rod 52 of ram 46 cause the ram to be arrested in either the position in which the bucket is level with the ground or in the fully racked-back position. Fig 5, (not shown), illustrates a hydraulic control circuit for the lift and tilt rams.
Patent GB-1044586-A (GB)
Title: Stimulated emission semiconductor device
IPC: H01S5/32
Filed: 1963-10-17
Abstract: 1,044,586. Semi-conductor lasers. GENERAL ELECTRIC CO. Oct. 17, 1963 [Oct. 24. 1962], No. 41072/63. Heading H1K. [Also in Division H3] A semi-conductor laser consists of a direct transition semi-conductor body having degenerately doped P and N type regions separated by a region of intermediate conductivity, two surface portions of the body defining a resonant cavity containing the intermediate region, and direct current being supplied at a sufficient current density to generate stimulated emission. Suitable semi-conductor materials include GaAs, InSb, InAs, InP, GaSb, alloys of these materials, and alloys of GaAs and GaP. Suitable impurities include S, Se, Te, Zn, Cd, Hg, Mg, Sn, Ge, and Si. Other suitable semiconductor materials are stated to be PbS, PbSe, and PbTe, with indium as a dopant. For degeneracy the excess negative carrier concentration should exceed 10<SP>17</SP>/cc., and the excess positive carrier concentration should exceed 10<SP>18</SP>/cc. In Fig. 1, a flat wafer has been cut from an ingot of N-type GaAs doped with 10<SP>18</SP> atoms/cc. of Te, and zinc has been diffused into all surfaces, after which the wafer has been cut and ground to remove all except one planar junction 4. Faces 11, 12 are formed parallel by cleavage and polished to optical smoothness. Faces 13, 14 may be roughened. The junction region is made between 300 and 20,000 , and preferably between 500 and 2000 , thick. Mirrors may be provided near faces 11, 12 or the faces may be partially metallized. Emission takes place at 8400  for GaAs, but the band gap may be varied by alloying different semi-conductor materials. The intermediate region may have intrinsic or weakly P- or N-type conductivity. In a modification, Fig. 6 (not shown), the device is cylindrical and has a planar junction halfway along its length. In Fig. 7 (not shown) a cylindrical junction is formed in a cylindrical semi-conductor body, the end faces of the cylinder defining the resonant cavity. A device having an elliptical cross-section is referred to. Frequency modulation of the output may be obtained by applying a magnetic field or an elastic stress to the crystal, or by varying the separation of the external mirrors, if provided. The crystal body may be formed integrally with a piezo-electric crystal for elastically stressing the laser crystal.
Patent GB-1061327-A (GB)
Title: Improvements relating to guide-blade rings for turbines or compressors of gas-turbine power units
IPC: F01D9/04
Filed: 1965-09-28
Abstract: 1,061,327. Turbine and compressor blade mounting. DAIMLER-BENZ A.G. Sept. 28, 1965 [Oct. 2, 1964], No. 41170/65. Heading F1T. A guide blade ring for a turbine or compressor of a gas turbine engine comprises blades B which are inserted radially outwardly through slots in an outer annular shroud A. An inner annular shroud C is then placed into position and each blade is drawn back radially until an extension 21 enters a slot or a recess in the outer wall 22 of the shroud C. When the required clearance g has been set, each blade is then welded to the shroud A, the weld extending around the entire periphery of the blade profile. As shown, the weld may be of greater thickness at each end so as to completely fill the gaps e, f between the blade and the flanges 11, 12 of the shroud A. The outer end 14 of the blade is of shallow U-shape to conform to the cross-sectional shape of the shroud A. The blades act as spokes to centralize the shroud C, the clearance g allowing relative thermal expansion.
Patent GB-951181-A (GB)
Title: A dynamoelectric generator
IPC: H02K16/04
Filed: 1962-10-31
Abstract: 951,181. A.C. generators. BENDIX CORPORATION. Oct. 31, 1962 [Nov. 15, 1961], No. 41223/62. Heading H2A. In a dynamo-electric generator 100 comprising cascaded first and second stages having respectively a D.C. energized stationary excitation winding 127 and a rotating multiphase output winding 126, and a rotating multiphase excitation winding 131 and a stationary multiphase output winding 132, the output frequency of the second stage is rendered double that of the first stage by coupling the rotating windings 126, 131 together in a reversed phase rotation by means of a plurality of rotating conducting rings 135 ... 138 interposed between the latter windings. The outer ends of the windings 126, 131 are interconnected by soldering or brazing to respective conducting rings 133, 134, the output from the winding 132 may, if desired, be fed through rectifiers 1 and 8 and a filtering condenser 145 and centre-tapped inductance 144, and in the embodiment shown the winding 127 is supplied by the winding 119 of another generator whose stator is excited by a rotary permanent magnet 116 mounted on an overhang of the hollow shaft 103 which carries the two windings 126, 131. Drive is conveyed to the hollow shaft by a torsional shaft 109, splined coupling 107, 108 and a vibration damper 111, but in another embodiment there may be no bearings in the generator, the rotor being borne by the prime mover which drives it.
Patent GB-1003551-A (GB)
Title: Organomagnesium materials
Inventor: BRYCE-SMITH DEREK
IPC: C07F3/02
Filed: 1960-12-01
Abstract: The invention comprises complexes of an organomagnesium compound with a metal derivative of an organic compound containing a hydroxy group or an enolisable keto group in which the proportion of metal derivative is at least 10 equivalents per cent of metal-oxygen bonds per mol. of the organo magnesium compound. Specified organo magnesium compounds include aryl, aralkyl or primary or secondary alkyl saturated hydrocarbon monohalides or saturated alkoxyaryl monohalides, and specifically dialkyl and diaryl magnesium compounds. Preferably the metal derivative is an alkoxide, the preferred metals being those of Groups I to IV of the Periodic Table, especially potassium, sodium, magnesium, calcium, zinc, aluminium and titanium. Specified compounds include aluminium isopropoxide, magnesium aluminium isopropoxide, Mg[Al (O-b Pr)4]2 and butyl orthotitanate. The complex may be prepared by preparing the organomagnesium compound in the presence of the metal derivative, or by adding the previously prepared organomagnesium compound to the metal derivative.
Patent GB-1464635-A (GB)
Title: Temperature-sensing device
IPC: F03G7/06
Filed: 1974-09-24
Abstract: 1464635 Temperature responsive actuating device INCENTIVE AB 24 Sept 1974 [19 Dec 1973] 41476/74 Heading G1D A temperature sensing device for actuating regulating control means in dependence upon a sensed temperature, comprises at least one substantially dish-shaped disc 10 of a first material that has a substantially continuous and circular circumferential edge clamped in a ring 12 of a second material. One of the materials is an elastically deformable plastics material which has a coefficient of thermal expansion that is greater, and preferably several times greater, than that of the other material, which may be metal. The discs 10 may be clamped in pairs as shown or singly Fig. 3, (not shown) and arranged in a stacked array 13, one end being fixed by a nut 16 and the other end being free to move a follower 19 against a spring 20. The movement of the follower 19 may be used to vary the resistance of a rheostat that controls the speed of an electric motor Fig. 6 (not shown). The discs 10 may be of plastics material that is reinforced with glass fibres, and may include heating elements 32 or a heating cover to enable either remote control or pre-setting of the device.
Patent GB-955664-A (GB)
Title: Improvements in disc brakes
Inventor: BUTLER HENRY JAMES
IPC: F16D65/52
Filed: 1959-12-08
Abstract: 955,664. Disc brakes. DUNLOP RUBBER CO. Ltd. Nov. 16, 1960 [Dec. 8, 1959], No. 41609/59. Heading F2E. In a disc brake of the type comprising a pair of plates 1, 2 movable inwardly about pivots 3, 4 by operation of a lever 10 to apply pads 8 carried by the plates against a disc 7, the plates being returned by deformable spring elements 9 whereby a predetermined clearance is maintained between the pads and the disc, the lever 10 is pivoted at 11 to one plate 1 and is connected to the other plate 2 by screw-and-nut mechanism 14, 15 of which one element, i.e. as shown the nut 14, is connected to an elongated torsion element 17 which unwinds progressively as wear on the pads occurs to shorten the overall length of the mechanism 14, 15 and so maintain a constant off position of the lever 10. The screw 15 is mounted on a pin 16 carried by plate 2, while nut 14 is secured to a spigot 13 rotatable in a trunnion 12 carried by the lever 10. The element 17 is either a cable or coil spring mounted within a sheath 16 or, in the latter case, on a rod, one end being connected to the spigot 13 and the other to a fixed mounting 19. A hole 20 is provided in the spigot 13 for the insertion of a tommy bar to rotate the spigot for applying initial torsion to the element 17.
Patent GB-1174063-A (GB)
Title: Surface Draw-Off Blocks or Tiles for Swimming Baths
Inventor: COOK RAYMOND
IPC: E04H4/12
Filed: 1966-09-17
Abstract: 1,174,063. Surface draw-off blocks for swimming baths. BELL BROS. (MANCHESTER) Ltd. 6 Sept., 1967 [17 Sept., 1966], No. 41610/66. Heading A4N. A block or tile for a swimming bath wall comprises a block 5 having faces 6 and 7 which define the rim of the bath and which are glazed, with a space 8 within it. The block has a plurality of apertures 9 and 10 in the form of vertical slots which communicate in the space 8. A plurality of apertures is formed in channels 15 of face 6 and further apertures 19 are formed in the rear of the block which communicate with a water passage 16. When the bath is filled with water and circulating water is supplied, the water level corresponds to the level of apertures 9 and 10 and water flows through said apertures into space 8 and thence into passage 16 via apertures 19 from which it is lead through appropriate recirculating apparatus and fed back to the bath. Ridge 23 forms a grip at the edge of the bath. The stock can be made of ceramic material or of coated stainless steel or cast iron. In another embodiment the space 8 can itself form a channel for leading away surface water, in which case no apertures 19 are provided. In a further embodiment Fig. 4, (not shown) the tiles are placed at a lower level than a conventional scum channel, thus water is continuously drawn off and draw-off is not dependent on water being splashed up into a scum channel.
Patent GB-1155348-A (GB)
Title: Safety Device for Preventing Crashing of Slides or Carriages in Stacking Cranes, Lift Trucks, and the like
IPC: B66F9/07
Filed: 1967-09-13
Abstract: 1,155,348. Safety devices for stacker cranes and masted lift trucks. DEMAG-ZUG G.m.b.H. 13 Sept., 1967 [28 Sept., 1966], No. 41834/67. Headings B8H and B8L. A safety device for preventing the free fall of the lifting carriage or operator's platform of a stacker crane or masted lift truck, e.g. in the event of the winch rope breaking, is associated with a pulley 6 mounted at the top of the lifting carriage guide 1 and supporting a rope 7 extending between the lifting carriage 2 and a counterweight within the guide. A pawl 12 is pivotally supported at 12a and is provided at one end with a roller 13 which is urged by a spring 14 into engagement with a cam 9 secured to the rotatable shaft 11 of the pulley 6. When the pulley 6 rotates at more than a predetermined speed, the cam 9 throws the roller 13 out of contact therewith, thereby causing the other end of the pawl to engage a ratchet wheel 10 secured to the shaft 11 to stop rotation of the shaft. The surface of the pulley 6 engaging the rope may be lined with a brake lining to limit the speed of free fall of the lifting carriage.
Patent GB-1505086-A (GB)
Title: Parachute assemblies
IPC: B64D17/38
Filed: 1975-10-14
Abstract: 1505086 Parachutes SAAB-SCANIA AB 14 Oct 1975 [15 Oct 1974] 41915/75 Heading B7G A stabilizing parachute 6 for an ejector seat 1 is extracted by a drogue parachute 5 and/or a weight 9 connected to the crown of the parachute 6 by a line 7. The rigging lines 10 connect at 12 to a harness 13 and a further line 11, of such length that it is tensioned before parachute 6 is fully deployed, connects the crown to the connection 12. The line 11 is passed through a crown vent 15 in the canopy of parachute 5 and is formed into a loop 25 round an eye 14 on line 7 and a connection 16 formed by four of the lines 10, the loop 25 being completed by stitching 22 which forms a seam extending in the direction of the length of the line 11. The arrangement is such that during initial extraction the stitching in loop 25 withstands the load imposed on it by parachute 5 but when parachute 6 becomes inflated the additional load imposed on the line 11 and loop 25 causes the stitching to part and the loop to split open thereby freeing the parachute 5 and/or weight 9.
Patent GB-864850-A (GB)
Title: Improved electron gun construction
IPC: H01J29/48
Filed: 1959-12-10
Abstract: 864,850. Cathode ray tubes. GRIFFITHS ELECTRONICS Inc. Dec. 10, 1959 [July 16, 1959], No. 42045/59. Class 39(1). An electron gun of a Cathode ray tube comprises an insulating disc 31 Fig. 2 within a grid supporting tube 16 the disc having a central aperture of two diameters and a barrier wall 44 integral therewith and extending from the upper face thereof and a cathode tube 47 is fixed in the smaller diameter portion. The control grid may have portions 18, 23 of different diameters with an annular connecting portion provided with annular spacer ridge 27, and an active disc portion 24 adjacent the emissive end 57 of the cathode. The barrier 42 protects the insulator surface 30 from material evaporated from the cathode. The ceramic disc 31 is held by a disc 34 welded to 18 or by a bead rolled into 18 or by prongs or tabs. The cathode is assembled with the insulator before assembling with the grid by rolling bead 49 on tube 47 or welding a flange or rim thereto and then rolling bead 50. A slight flare at 51 facilitates insertion of the heater assembly. The cathode has an integral or separate cap 56 welded to tube 47, preferably the latter. Adjustment of the cathode height above insulator surface 30 is effected by the means disclosed in U.S.A. Specification 2,758,236. The gun has ceramic support rods and spring fingers supporting a final anode disc from the tube wall. There may be more than one electron gun. In a modification the grid may be of uniform diameter throughout its length in which case Fig. 3 (not shown) a metal spacer tube extends from the underside of 24 to the top 30 of ceramic disc 31 and has a flange or foot to' rest on 30.
Patent GB-898538-A (GB)
Title: Improvements in or relating to valves for pneumatic articles and the like
IPC: A47C27/08
Filed: 1959-12-10
Abstract: 898,538. Balls for games. DELACOSTE & CIE. Dec. 10, 1959 [Dec. 15, 1958], No. 42047/59. Class 132(2) [Also in Group XXIX] A valve, adapted to be fitted on or formed integral with inflatable articles, such as beach balls, balloons or pneumatic mattresses, comprises an elastic valve body, secured to or formed integrally with the wall 2 of the article, having a tubular portion 1 extending into the article. A shank 4 fits in the tubular portion 1 and has a head 5 which fits into a correspondingly shaped cavity in the valve body. The construction of the tubular portion around the shank 4 closes an opening in the article, while fluid pressure applied to an orifice 6 flows through a diametral or radial slit 7 in the head 5 into the upper part of the tubular portion causing it to expand and allow the fluid to flow into the article.
Patent GB-1326281-A (GB)
Title: Production of hydrogen peroxide
IPC: C01B15/023
Filed: 1970-09-03
Abstract: 1326281 Hydrogen peroxide DEUTSCHE GOLD-UND SILBER SCHEIDEANSTALT 3 Sept 1970 [10 Sept 1969] 42189/70 Heading C1A Hydrogen peroxide, substantially free from organic impurities, is produced by the anthraquinone process in which the working solution comprises an anthraquinone derivative as the reaction carrier and a solvent mixture for the reaction carrier which is a mixture of a quinone solvent and a hydroquinone solvent containing 5 to 95% by volume of t-butyl benzene as the quinone solvent and preferably a phosphoric acid ester I or phosphonic acid ester II of formula in which each of R<SP>1</SP>, R<SP>2</SP> and R 3  represents an aryl or an alkyl group, e.g. triethyl hexyl phosphate or tri-n-amyl phosphate.
Patent GB-1481331-A (GB)
Title: Pipeline cleaning ball and valve structure
IPC: B08B9/053
Filed: 1974-09-30
Abstract: 1481331 Inflatable pig OIL STATES RUBBER CO 30 Sept 1974 [1 Oct 1973] 42328/74 Headings F2N and F2V A pipeline pig comprises a ball 1<SP>11</SP> inflatable so as to vary its size precisely a valve assembly bonded into the wall and positioned at the base of a recess 211 for protection, the valve assembly including a ball 22 trapped within a shaped and threaded insert 16 by means of a seal 20 and providing temporary sealing, e.g. after inflation, and a removable plug 26 for affecting a more permanent seal. The valve sleeve 32 and recess 211 are as long as possible, determined by the thickness of the wall 1<SP>11</SP>, which is locally increased internally in the valve area if necessary. Plug 26 has a seal 28 and may have a core (55, Fig. 8, not shown) bonded to it with a screwdriver slot at its other end in order to fill the recess 211 for further protection. Special adaptors (40, Fig. 7, not shown) are used with deep recesses where an inflation attachment cannot be directly attached to the threaded end 24.
Patent GB-1158487-A (GB)
Title: Coating Removal Device in the manufacture of Cathode Ray Tubes
IPC: H01J29/28
Filed: 1966-09-22
Abstract: 1,158,487. Luminescent screens. SYLVANIA ELECTRIC PRODUCTS, Inc. 22 Sept., 1966 [29 Sept., 1965 (2)], No. 42404/66. Heading H1D. In a process of applying an aluminium backing layer to the cathodo-luminescent screen 19 and surrounding sidewalls 15 of a cathode ray tube comprising applying first a layer of lacquer 21, removing the lacquer from the sidewall portion of the tube face plate, covering the entire inner surface of the face plate with an aluminium film and then baking to remove volatile constituents, the lacquer 21 is removed from the sidewall 15 by rotating horizontally a freshly lacquered face plate 11, with its inner surface facing downwards, relative to a stationary nozzle 23 which traverses the periphery of the sidewall at a constant distance to direct at a constant angle and pressure a jet of flushing liquid 27 on to the sidewall such that a constant terminal formation of liquid 39 results which completely flushes the lacquer layer from the sidewall before the lacquer has had time to form a film. The nozzle 23 is mounted in a panel tracking means 49 which is maintained a fixed distance from the sidewall by two tracking rollers 151, and the flushing liquid, which may be water, is supplied through the rod 107 which supports tracking means 49. The lacquer should not form a film too quickly-the mixture of xylene and toluene in which 4.6 to 5% by weight of acrylic resin solids and butyl phthalate plasticizer is dissolved is suitable As shown in Figs. 4 and 5, the face plate 11 is initially temporarily held on a number of panel rests 79 prior to being mounted without distortion by retainers 93 and pressure retainer 95 on an annular disc 51 which in turn is mounted on a base 61 by a number of vertical sets of rollers 55. Lateral movement of disc 51 is limited by horizontal rollers 63 and the disc 51 is rotated about vertical axis 104 by a chain 69 and drive mechanism 67. During the mounting of the face plate the tracking means 49, which are mounted on rods 107 and pivoted about post 109, are pushed towards the centre of the disc 51 by the plungers 113 of horizontal pressure means 111 against springs 117, which normally retain the rollers 151 of tracking means 49 against sidewall 15. A drainage well 161 is provided to dispose of the flushing effluence. During the tracking of the nozzle 23 round the sidewall 115 the jet of flushing liquid 27 is maintained at a constant angle to the sidewall and the head of the tracking means may swivel to have limited arcuate movement so that it can negotiate the corners of a rectangular tube face plate whilst maintaining constant spacing therefrom, Fig. 8 (not shown). The sequence of operations may be programmed and automatically controlled.
Patent GB-1281774-A (GB)
Title: Turbine casing
IPC: F01D17/14
Filed: 1970-09-04
Abstract: 1281774 Gas turbines; supercharging I. C. engines CUMMINS ENGINE CO Inc 4 Sept 1970 [4 Sept 1969] 42436/70 Headings F1B F1G and FIT A turbine driven supercharger for an I. C. engine comprises a turbine casing having a volute portion 11 which directs engine exhaust gases to drive the turbine rotor 31, the volute being divided into two parts 36, 37 by an annular partition 35 the inner periphery of which terminates at the entrance to a throat 13 so that the latter can receive gas from parts 36 and/or 37. The cross sectional area of the parts 36, 37 may be equal or different and each part is connected to receive exhaust gas from appropriate engine cylinders, e. g. one or other cylinder bank of a V-engine. In a modification Figs. 4, 5 (not shown), a flap valve (68) is pivotally mounted at the upstream end of the partition to control exhaust gas flow to the parts in such way that the engine provides a torque rise with decreasing speed.