baber/WOPTO huggingface dataset:
Patent GB-1233138-A (GB)
IPC: F42D1/04
Filed: 1969-03-31
Abstract: 1,233,138. Blasting. IMPERIAL CHEMICAL INDUSTRIES Ltd. 27 Feb., 1970 [31 March, 1969], No. 16615/69. Heading E1F. [Also in Division F3] A method of blasting comprises positioning a downline of detonating cord 21, Fig. 3, in a shothole, loading a blasting agent 23 into the shothole and, at selected stages (a), (b) &c of the loading, slidably connecting to the down-, line a primer assembly 12, 13 and 16. The primer assembly for initiating the blasting agent comprises a priming charge 11 Fig. 1 of high explosive, a connecting length of detonating cord 13, and a connector 16 adapted to hold the detonating cord in close lengthwise proximity to a downline 21 of detonating cord while permitting it to be slidably moved along the downline. The connector 16 is formed of polyethylene and is provided with two overlapping bores 15 and 20 whereby the downline and detonating cord can be held in contact. A third bore 17 permits the end of the detonating cord to be doubled back. The end of the detonating cord is covered by a water-proof silicone-rubber composition 18 and a metal cap 19. The charge 11 has a velocity of detonation of at least 6,500 m/sec and comprises cast or pressed PETN and TNT in ratio of 40:60 to 60:40, tetryl, CTMTN, or mixtures of CTMTN and TNT. The charge is contained in a polyethylene container 12 and may consist of several smaller charges placed end to end. The charge is circular or rectangular in cross-section, and has a length to maximum cross-section dimension ratio of 3:1 to 5:1.
Patent GB-1233141-A (GB)
IPC: B08B11/00
Filed: 1969-04-24
Abstract: 1,233,141. Cleaning apparatus. H. SCHMIDBAUER [trading as ELMA HANS SCHMIDBAUER]. April 24, 1969 [April 26, 1968], No.20882/69. Heading C7E. [Also in Division G3] An apparatus for cleaning small, mechanical parts comprises a container 1 having means therein moving the objects to be cleaned and to which cleaning and rinsing liquids are fed in succession from containers 43, 44, 45 via conduits 34, 35, 36 by suction produced in the container 1 by a vacuum pump 5. A change-over valve 26 controls the liquid supply from the conduits 34, 35, 36 to a conduit 24 leading to the container 1. The motor 13 drives via belt and pulley gearing a shaft 9 carrying an eccentric plate 16 on which is rotatably mounted the shaft 17 of the holder 18 for the ports to be cleaned. The shaft 9 also carries an eccentric 8 for operating the pump 5. An electrical control system for the apparatus includes tuning mechanism 57 driving cams 54, 55 operating switches 52, 53 controlling the motor 13 and an electromagnetic valve 22 for admitting air into the container 1 to cause the return of the cleaning or rinsing liquid to its container 43, 44, or 45 at the end of a cleaning or rinsing operation. The drying of the cleaned and rinsed parts is assisted by a heating jacket 50 surrounding the container 1.
Patent GB-1250608-A (GB)
IPC: G21C13/00
Filed: 1967-12-04
Abstract: 1,250,608. Pressure vessel. UNITED KING- DOM ATOMIC ENERGY AUTHORITY. 14 Nov., 1968 [4 Dec., 1967], No. 55129/67. Heading B1X. [Also in Division G6] In a pressure vessel formed of outer and inner annular rings 1 and 2, the inner ring is subjected to a compressive loop stress by pressure generated in the soft metal, 4, located between 1 and 2. The bolt 8, when tightened, compresses the soft metal, 4, between the rings 5 and 6. Chamfered sealing rings, 7, are interposed between 5 and 6 and 4, the latter being, for example, lead.
Patent GB-1251409-A (GB)
IPC: G03B27/72
Filed: 1969-11-05
Abstract: 1,251,409. Monitoring light. BELL & HOWELL CO. Nov. 5, 1969 [Nov. 29, 1968], No. 54259/69. Heading G1A. An arrangement for sensing light at a plurality of different locations includes a plurality of optical fibres whose entry faces are at the locations and whose exit faces are aligned selectively with a photo-sensitive transducer. Neutral density filters are incorporated at the exit ends of the fibres to correct for the different light transmission characteristics of the individual fibres. The entry ends 19 of the fibres are secured in a holder 20 of plastics material and the exit ends are secured in holder 26 of plastics material which can be traversed past a photo-detector mounted behind lens 42 in tube 44. A detent arrangement comprising notches 64 and spring 66 ensures that the fibre end and photo-detector are aligned. Colour filters 79, 80, 81, 82 mounted in disc 72 may be selectively placed in front of the photo-detector so that the spectral contents as well as the intensity of light falling on ends 19 of the fibres can be investigated. Neutral density filters may be held adjacent the colour filters to compensate for colour inequalities in the photodetector characteristics.
Patent GB-1251915-A (GB)
IPC: A61C1/00
Filed: 1970-03-03
Abstract: 1,251,915. Portable dental apparatus. MAJESCO Inc. 3 March, 1970, No. 10247/70. Heading A5R. Portable dental apparatus comprises a portable case accommodating dental drill controls and an amalgamator assembly both supplied with power from a power supply unit also accommodated in the case. The power supply unit Figure 1A, not shown, is manually set by switches to be operated by mains power supply of 110V or 220V which it converts to a suitable form, or to be operated by batteries, or to recharge the batteries. An indicating lamp, when illuminated, indicates that the apparatus is ready for use. If the lamp is not illuminated, and the apparatus is set for operation, this indicates either that, when operating from the mains supply, the power unit is set to operate at 110V when the supply is 220V or vice versa, or that, when operating with batteries, the batteries require recharging. The drill controls include a speed selector 43 (Fig. 1B) and a reversing switch 45 and may be operated by a foot switch 41. The amalgamator assembly includes means 46 for vibrating a capsule of amalgam for a time set by a timer 47. The case also accommodates a pulp tester unit and a surgical unit. The pulp tester unit comprises a module 36 which is an oscillator regulated by a variable resistance 37, and a probe tip and a lamp 40 illumination of which indicates a sharp difference in the state of the tooth being examined and an adjacent tooth. The surgical unit is operated by a foot switch 52 and is also an oscillator regulated by a variable resistance 53. A receptacle 54 accommodates one end of an electrode held by the patient, receptacle 55 receives a cutting tip, and receptacle 56 receives the jack of blood coagulating apparatus. The carrying case has a panel, visible when the case is open, which carries the control knobs and also receptacles for receiving jacks of further accessories. There is also provided a second carrying case which has a power supply unit, similar to that in the first case, and a drip blower and saliva ejecting apparatus, Fig. 6. A suction tube 100 passes saliva from the mouth of the patient to a collector 101 containing a float 103. Between the tube 100 and an outlet 105 is positioned a filter 104. Air sucked out of collector 101 is passed through a filter trap 106 and valve 107 to the inlet of a centrifugal pump 109. Air, discharged from the pump, is fed through a 'valve 107' and filter trap 117 to a water reservoir 118 and pushes water into pipe 121. Pipes 119 and 121 are controlled by a valve 122 which selects either water, air or waterair spray discharge through pipe 121.
Patent GB-1256784-A (GB)
IPC: C09D7/00
Filed: 1969-04-22
Abstract: 1,256,784. Coating compositions. BALM PAINTS Ltd. 22 April, 1969 [22 April, 1968; 8 July, 1968], No. 20467/69. Headings C3B, C3P and C3R. Matte coating compositions comprise from 45-90% by volume based on the total solids content of the composition of nodular or chunky granules of pigmented polymer dispersed in an aqueous latex of a water-insoluble film-forming polymer, said granules having an elongation at break of 40% or less and comprising 1-75% by weight of pigment particles, more than 90% by weight of the granules having a Stokes diameter in the range 1-50 microns and the granules having a specified relationship between volume concentration and weight average mean Stokes diameter. Various pigmented polymers, latex polymers and pigments are specified. In examples, titanium dioxide and lampblack are used as pigments and silica, china clay and synthetic aluminium silicate as pigment extenders; a commercial acrylic copolymer latex containing tri-n-butyl phosphate plasticizer is used as the film-forming latex; and the pigmented polymer is (a) polymethyl methacrylate, (b) vinyl chlorideyinyl acetate copolymer, (c) methyl methacrylate-ethylene glycol dimethacrylate copolymer, (d) polyvinyl acetate, (e) styrenedivinyl benzene copolymer, (f) n-butyl methacrylate-methyl methacrylate-divinyl benzene copolymer, (g) methyl methacrylate-tetraallyloxyethane copolymer, (h) urea-formaldehyde resin, and (i) a condensate of a commercial liquid grade polyamide resin with an epichlorohydrin-bisphenol A epoxy resin. Other components included in the exemplified compositions are sodium hexametaphosphate, 1,2- propylene glycol and water-soluble cellulosic thickener.
Patent GB-1258579-A (GB)
IPC: D06F43/02
Filed: 1970-04-22
Abstract: 1,258,579. Washing machines. PELLERIN MILNOR CORP. 22 April, 1970 [12 Aug., 1969], No. 19278/70. Heading D1A. To reduce the bulk of laundry by wetting it during loading a basket 10 which is rotatable about a horizontal axis in a housing 19 has at least one water distributor which in the loading position sprays water downwards and is supplied at one end with water from a pipe in the housing. As shown the basket has an axial partition 11 forming two compartments, two doors 8 at one end and, extending from the other end, two passageways 14, 15 with apertures 16 for spraying water onto laundry. The end of the distributors have apertures 20, 21 which line up with the ends of pipes 17, 18 with electro-magnetically controlled valves 22, 23. The control circuit of the valves includes a manual switch in series with a programmer control comprising a finger engaging a conducting drum 27 with an apertured paper roll 28. A manually and automatically controlled train valve may be provided for the housing.
Patent GB-1264589-A (GB)
IPC: B29C65/00
Filed: 1970-06-15
Abstract: 1,264,589. Seaming non-metallic sheet material. VSESOJUZNY NAUCHNO-ISSLEDOVATELSKY I EXPERIMENTALNO KONSTRUKTORSKY INSTITUT PRODOVOLSTVENNOGO MASHINOSTROENIA. 15 June, 1970, No. 28769/70. Heading B5K. In a method of ultrasonically welding together two sheets each comprising a non- thermoplastic layer, e.g. a cardboard layer 1, la, and a thermoplastic polymer layer 2, 2a by laying the sheets upon one another with the layers 2, 2a in contact and ultrasonically welding the sheets along a line, prior to welding, at least one of the non-thermoplastic layers 1, 1a is densified along the intended line of the weld. In the embodiment shown, both cardboard layers 1, 1a are densified by passage between rollers 3, 3a which form grooves 6 in these layers, pressure being applied to the axle of the roller 3a. The sheets are continuously welded along the grooves 6 by an ultrasonic welding head 4 using a roller 5 as an anvil. Preferably, the layers 2, 2a are polyethylene. The invention is also applicable to joining cardboard-foil-polyethylene laminates.
Patent GB-1264832-A (GB)
IPC: G01N9/26
Filed: 1969-04-08
Abstract: 1,264,832. Suction dredging. INGENIEURSBUREAU VOOR SYSTEMEN EN OCTROOIEN "SPANSTAAL" N.V. 8 April, 1969 [8 April, 1968], No. 17945/69. Heading E1F. In a method of sucking sand from ground in which the sand occurs beneath a layer of silt or other soil, by using a suction dredger installation provided with a suction pipe, the suction mouth of the pipe is positioned beneath ground level and a physical property of the soil at two levels above the suction mouth is measured to determine the height of the sand in the soil above the mouth. The difference in pressure between the two levels in the soil may be ascertained by measuring devices which are attached to the suction pipe and measure the actual pressures at these levels or the difference in pressure between each of these levels and a pressure above the ground, or the difference in pressure between the two levels. The difference in pressure between a plurality of levels may be measured. Alternatively measurements of viscosity, electrical resistance or transmittivity of rays may be made.
Patent GB-1264894-A (GB)
IPC: D04H3/14
Filed: 1969-05-29
Abstract: 1,264,894. Tobacco-smoke filters. CELANESE CORP. 29 May, 1969 [17 June, 1968], No. 27272/69. Heading A2C. [Also in Division D1] A cigarette filter comprises a gathered web of substantially longitudinally aligned crimped continuous filaments, e.g. of cellulose acetate, treated with a plasticizer such as triacetin. The web has grooves along its surface extending parallel to the axis of the filter which are formed by heating the web and passing it between patterned rolls prior to forwarding it to the garniture of a cigarette filter making unit.
Patent GB-1265612-A (GB)
IPC: H01R9/26
Filed: 1970-02-25
Abstract: 1,265,612. Terminal blocks. HEGO ELECTRIC G.m.b.H. 25 Feb., 1970, No. 37772/71. Divided out of 1,265,611. Heading H2E. [Also in Division H1] The subject matter of this Specification is identical with that described in Specification 1,265,611 but the claim relates to a pair of terminal blocks (one shown in Fig. 10) which are internally connected and cross-connected by a rotatable contact carrying member 26b through a unidirectional clutch (not shown) by an inner reciprocable member 26a carrying an actuating lever 25.
Patent GB-1267080-A (GB)
IPC: B65H23/195
Filed: 1969-10-15
Abstract: 1,267,080. Automatic control of web winding or unwinding apparatus. HAWKER SIDDELEY POWER TRANSFORMERS Ltd. Oct.14, 1970 [Oct.15, 1969], No.50640/69. Heading G3R. Web winding or unwinding apparatus comprises a reel 2 driven by an electric motor 12 supplied with a variable voltage from a power source 13  controlled by an amplifier 14 which receives signals from:- (1) a voltage source 10 whose output is controlled by an arm 8 carrying a roller 5, which engages the web 1 under the action of a force W having a constant value irrespective of the displacement of the arm 8, (2) a tachometer generator 11 whose output voltage is proportional to the rate of displacement of the arm 8, (3) a tachometer generator 6 driven by a webdriving machine 3 and producing a voltage proportional to the web speed thereat, and  (4) a tachometer generator 7 driven by a fixed roller 4 and producing a voltage proportional to to the web speed adjacent to the reel 2.  Signals (3) and (4) oppose one another and produce balance under steady state conditions, when the arm 8 is stationary at its mid-position so that signals (1) and (2) are zero. As the quantity of web on the reel 2 changes, the signals (1) and (4) alter to maintain the web speed and tension at their desired values, the arm 8 and source 10 thus providing a continuous correction action to compensate for the reel diameter change. These members also provide compensation under transient conditions, the signals (3) and (4) dealing with a condition of permanent speed change as, for example, when the speed of machine 3 is changed to alter the web speed. To effect transfer of the web 1 from reel 2 to another reel 20 without interruption of the continuous control action, the signals (1) ---- (4) are supplied to the amplifier 17 controlling the power source 18 for the reel driving motor 19, which is in series with the motor 12 and a voltageresponsive bridge 23 controlling a change-over relay 27 through transistors 24, 25, 26. When reel 2 is either full or empty, motor 19 is switched on and accelerates under the influence of signal (3) and that from a tachometer generator 21 applied to the amplifier 17, transfer of the web being effected when the two signals balance. The voltage difference between motors 12, 19 causes the bridge 23 to hold relay 27 de-energized to prevent application of signals (1) and (2) to amplifier 17 upon web changeover, until the arm 8 is in a position to give the correct speed for the reel 20. Movement of arm 8 subsequent to changeover controls amplifier 14 to alter the voltage across motor 12 until it equals that across the motor 19, whereupon the bridge 23 energizes the relay 27 to changeover its contacts thus connecting amplifier 17 to signals (1), (2) and (4) and disconnecting it from the signal of tachometer generator 21.
Patent GB-1267270-A (GB)
IPC: G03B27/73
Filed: 1970-04-22
Abstract: 1,267,270. Photographic printing apparatus, light guides. FUJI PHOTO FILM CO. Ltd. April 22, 1970 [April 23, 1969], No. 19366/70. Headings G2A and G2J. Photographic colour printing apparatus has light receivers 8 disposed adjacent an optical projection system 3 and photo-cells 10, 10', 10" to separately detect the intensity of light of three different colours, an arrangement of optical fibres 9 in three groups extending between the light receivers and each of the photo-cells. Each group terminates in a collector 12, 12', 12", and colour filters 11, 11', 11" are disposed between the collectors and the photo-cells. As shown, the light receivers are disposed equally around the projector lens and are formed in a conical recess, the conical surface being directed towards a negative to be printed so as to receive light dispersed therefrom.
Patent GB-1289179-A (GB)
IPC: H01J23/20
Filed: 1969-09-24
Abstract: 1289179 Velocity-modulated tubes VARIAN ASSOCIATES 24 Sept 1969 47095/69 Heading H1D In a high frequency discharge tube incorporat - ing a cavity resonator having a re-entrant drift tube, the free end of the drift tube is provided with axially extending slots 21, Fig. 2B, and is coated on either or both the interior and exterior surface with lossy material 22, to suppress unwanted modes. The slots may be radial, Fig. 2B, or non-radial, Fig. 2G, and may, in the opposed ends of adjacent drift,tubes, be either axially aligned (Fig. 1, not shown), or azimuthally out of phase (Fig. 3, not shown). Lossy materials referred to include an Al/Cr/Co/Fe alloy and electrolytically deposited iron. Reference is made tothe use of the arrangement in klystrons, hybrid tubes, and travelling-wave tubes incorporating coupled-cavity slow-wave structures having reentrant drift tubes.
Patent GB-1290138-A (GB)
IPC: B04C1/00
Filed: 1970-01-30
Abstract: 1290138 Multi-stage centrifugal classifiers INGENIEURBUREAU DR BREHM AG 30 Jan 1970 4671/70 Heading B2P A multi-stage spiral flow classifier, for classifying solid particulate material suspended in a gaseous carrier medium into at least three fractions of different particle sizes, comprises means for separating part of the material as a coarse fraction in each stage, means for passing the remainder of the material together with the carrier medium into a subsequent stage for separation of a further coarse fraction from the remainder of the material, and means for feeding, at the or each subsequent stage, additional carrier medium, in the form of a spiral flow, to the flow of material and carrier medium entering said stage. In the embodiment shown in Figs. 4 and 5, the material to be classified is metered through a connection 46 into a pre-mixing annular chamber 43 in which it becomes suspended in carrier medium, e.g. air or an inert gas, introduced tangentially at 47. The suspension then passes through an annular gap 63 into a first stage classification chamber 58. Additional carrier medium sucked through a perforated wall 55 and an ante chamber 56 is fed through adjustable blades 60 in the form of a spiral flow to the chamber 58. The separated coarse fraction is removed through an outlet 70 while the remaining fraction of finer material passes with the carrier medium through an annular gap 64 into a second-stage classification chamber 59 to which additional carrier medium is fed as a spiral flow via perforated wall 55, ante chamber 57 and adjustable blades 61. A finer fraction of the coarse material is discharged through an outlet 71 and the remaining fraction of fine material passes with the carrier medium via an annular gap 72 into a cyclone 73 from which the carrier medium is discharged through an outlet pipe 41, optionally through a filter, either into the open or, in the case of a closed cycle installation, back into the admission aperture 47 or the antechambers 56, 57. The parts 40, 41, 42, 44, 48, 49, 50 are removable as a unit from the rest of the in a modification Figs. 1-3 (not shown), there is no pre-mixing chamber the material being fed directly to a first-stage chamber of spiral shape to which carrier medium is supplied through a tangential peripheral inlet, this chamber having no additional feed of carrier medium. The additional carrier medium may be introduced in the same direction as, or in opposite direction to, the main flow of material-laden carrier medium in each stage.
Patent GB-1290666-A (GB)
IPC: F16H3/60
Filed: 1968-10-28
Abstract: 1290666 Reverse gear SELF-CHANGING GEARS Ltd 13 Oct 1969 [28 Oct 1968] 51036/68 Heading F2D Clutch-brake actuated planetary reverse gear arranged ahead of a main change-speed gear 5 on a rail or other vehicle, comprises equal input and output suns 2, 3, meshing respectively equal planets 6, 7, which lie on a common pitch circle on a carrier 10, intermesh only over the central part of their length, and have plain non- toothed portions at the one end which overlies that sun which meshes the other planet. Forward solid drive is by engaging a multidisc clutch 15 between planet-supporting pins 9 on the carrier 10 and the input shaft 1, by supplying fluid pressure to a piston 29 acting through a stationary lever 31, collar 33, rocking at 34, and thrust bearing 35 on a presser plate 14. Reverse is by supplying fluid pressure to a diaphragm 39 engaging a multi-disc brake 20 between the planet-supporting pins 9 and the casing.