baber/WOPTO huggingface dataset:
Patent GB-1229741-A (GB)
IPC: D21F1/02
Filed: 1969-01-16
Abstract: 1,229,741. Papermaking. BELOIT CORP. 16 Jan., 1969 [14 Feb., 1968], No. 2586/69. Heading D2A. [Also in Division E2] A headbox for delivering liquid slurry has chambers which are closed and isolated from each other, convergently tapering in the downstream direction, and a slice region formed in the headbox having a plurality of slice openings, each opening communicating with one chamber, the openings being so disposed that slurry can be delivered in layers, each supplied from one of the chambers. As shown, headbox 10 has chambers 13, 14 and 15 which may be fed separately from 56, 57 and 58, or which may be fed from a single stock source. The chambers may contain flow spreaders 52, 53, 54, tube banks 49, 50, 51; and flow turbulence generators 46, 47, and 48. The walls 18, 22 and 27 may be pivoted at 21, 26 and 43 respectively and the slope of these walls may be adjusted by rods 41, 37 and 33. Rods 33 and 37 are connected to their respective plates, and pass through others by means of spherical bushings (Figs. 4 and 5, not shown). The headbox may be adapted for use with a cylindertype machine in which a wire passes around a roll (Fig. 2, not shown), the walls 18, 22 and 27 being curved to conform with the roll.
Patent GB-1239122-A (GB)
IPC: H01S3/139
Filed: 1969-01-06
Abstract: 1,239,122. Lasers. A. N. ALEXEEVA, S. A. ALYAKISHEV, D.V. GORDEEV, and M. I. KATAEV. 6 Jan., 1969, No. 695/69. Heading H1C. The output of a laser is frequency-stabilized by passing the output radiation through an absorption cell having a zero field centre frequency corresponding to the nominal centre frequency of the laser output and subjected to an alternating magnetic field to effectuate splitting of the absorption line, through a polarizer to a photo-receiver the output signal of which is used to derive an error signal which is utilized to vary the optical length of the laser resonator. A helium-neon gas discharge tube 4 provided with Brewster windows 6, 7 is positioned in laser resonator 2, 6, one of the mirrors 2 of which can be displaced along the resonator axis by piezo-ceramic element 8. The output radiation of the laser which is not 100% linearly polarized and consists of two mutually perpendicular linearly polarized components E 01 , E 02  is passed through neon absorption cell 9 to which is applied an alternating magnetic field by solenoid 10 and A.C. generator 15. Since each of the linearly polarized components E 01 , E 02  of the laser output can be regarded as a superposition of two equal amplitude oppositely circularly polarized components then if the laser frequency deviates from the absorption line frequency of cell 9 in the presence of the magnetic field, the absorption coefficients for left and right circularly polarized components differs so that the amplitudes of the circularly polarized components will be different. This will result, at the output of cell 9 when the components are summed, in two mutually perpendicular waves (b) the ellipticity of which is dependent on the magnitude of the frequency departure. This radiation passes to polarizing prism 11, the transmission plane of which is arranged to be perpendicular to the polarization plane of the laser radiation and so only transmits to photo-receiver 12 those waves which correspond to the minor axis of the ellipses. The amplitude and phase of this signal varies directly with the magnitude and sign of the laser frequency deviation and the output from receiver 12 is fed via amplifier 13 to phase detector 14. The voltage from the phase detector 14 is fed to element 8 to either increase or decrease the resonator length in accordance with the sign and magnitude of the signal from detector 14. Since the degree of polarization of the laser radiation is very high then the amount of constant illumination falling on receiver 12 is reduced. The piezoceramic element may be replaced by a magnetostrictive element or by a crystal positioned in the resonator.
Patent GB-1258270-A (GB)
IPC: A47C16/02
Filed: 1969-08-21
Abstract: 1,258,270. Leg rest. P. A. WILDY. Aug.21, 1970 [Aug. 21, 1969], No.41752/69. Heading A4J. The frame positions 6 allow the rest to assume any angle between a stable position shown and that in which frame 1, 5 engages the floor. A convex surface 3 supports the leg.
Patent GB-1264238-A (GB)
IPC: F16H41/30
Filed: 1969-11-11
Abstract: 1,264,238. Change-speed control. CATERPILLAR TRACTOR CO. 11 Nov., 1969 [29 Nov., 1968], No. 55093/69. Heading F2D. A torque converter-retarder lock-up system for a dual power source i.e. front and rear engined vehicle such as a scraper having unmatched transmissions e.g. the front and rear transmissions may be eight and four speed units respectively, comprises a lock-up clutch 17 arranged across a torque converter 19 of a rear engine 11 and hydraulically operated to lock said converter 19 to give a direct mechanical drive between the engine 11 and its transmission (not shown) only and always when hydrodynamic braking via a retarder 21, 23 is required. Control is effected via a manually controlled modulating air valve 25 for pneumatic operation, via a duct 33, of a spool valve 38 which supplies hydraulic pressure via ducts 43, 49 to engage the lock-up clutch, a control valve 52 being simultaneously pneumatically operated via a duct 31 to modulatably actuate i.e. progressively charge the retarder 21, 23 with hydraulic fluid from the converter 19 via ducts 57, 59, the valve 52 additionally exhausting fluid from the retarder via a duct 61 and passing it through heat exchangers 65 and 63 via ducts 67, 69 and 71 before returning the fluid to the transmission lubricating system via a duct 64. Pneumatic pressure from the manual air valve 25 also passes via a duct 39 to a front retarder control (not shown) for modulatably actuating a front transmission retarder (not shown).
Patent GB-1266608-A (GB)
IPC: G09F11/02
Filed: 1969-03-17
Abstract: 1,266,608. Optical apparatus. J. E. SHEARER. March 17, 1969, No.13912/69. Heading G2J. [Also in Divisions C4 and G5] Legend-bearing card panels 30 and 34 overlie two faces 24 and 22 of each triangular prism 12 such that when drum 40 is rotated an observer viewing the third face 20 of each prism 12 sees one legend disappear and the other appear, due to total internal reflection. The prisms 12 comprise hollow plastics cones filled with water with the angles X equal to the critical angle (48 degrees for water). The drum 40 is supported on rollers driven via a belt 66 by a motor-gear unit 72. The legends may be formed of fluorescent material activated by an ultraviolet light source 78, and the plastics of the prisms transmits ultraviolet light.
Patent GB-1288897-A (GB)
IPC: B25C1/08
Filed: 1971-04-19
Abstract: 1288897 Explosively-actuated fastener-driving tools OLIN CORP 19 April 1971 [12 June 1970] 25017/71 Heading B4C  A fastener driving tool comprises a housing 2, Fig. 1, a barrel 4 and an interchangeable muzzle bushing 6. The firing chamber comprises movable wall portions to contain a caseless explosive pellet. Magazine.-A magazine 22, Fig. 4, of caseless pellets 24 is mounted in a magazine slot 18 in the handle 8, Figs. 2 and 4. The pellets are slid out of the magazine by a pellet follower 20 which comprises a main body portion 30 having a raised hump 32 which projects outwardly through the slot, and permits manual adjustment. A pellet pusher 40 is mounted on a pin 38 connected to the follower body. The follower is hooked over a shoulder 48, Fig. 5, to permit reloading. Firing assembly.-A bolt 50, Fig. 5, and firing pin 54 are mounted in the housing 2. The bolt includes gas-sealing grooves 60. The pellet is surrounded by a gas-tight shroud (a countersink 62) when the tool is cocked. The firing chamber is formed by shoulders 64 in the countersink 62 and prongs 58 on the bolt 50. The firing pin co-operates with an anvil member 68 which has gas-escape passages 70. A piston 72 has a piston stem 76 to drive a fastener 82. The piston is returned by a spring 88 and pawl 16. Power adjustment.-Rotation of a power adjustment drum (graduated if necessary) adjusts stops which limit the extent of forward movement of the barrel 4 used to return the piston from its "fired" to its "firing" position. This in turn determines the distance 116, Fig. 5, between the rear face of the piston head 74 and the forward face of the anvil, and thus the size of the firing chamber and the power of the tool. Cocking.-When the tool is pushed against a surface 84 the barrel 4 moves rearwardly against a slide web 120 so that a notch 138, Fig. 6, pushes the firing pin 54 rearwards to its cocked position. When the rear face of the barrel 4 contacts the bolt 50, a lug 136 is aligned with a spring plate 146 and when the trigger 140 is pulled a sear 126 pivots clockwise and disengages the notch 138 from the firing pin 54. The pin is then urged forward by its spring 56. Cocking is thus only achieved by full push-down against a working surface and can only be fired at full push-down. The cocking mechanism prevents free firing, stab firing and drop firing. Pellet feed.-The pellet 24 is fed by a head 152, Fig. 11, in a slidable plunger rod 148 from a passage 44, Fig. 5, and is pivoted through 90 degrees during its transfer from the magazine to the firing chamber, by co-operation of a stud 176, Fig. 5, in a slot 166 (Fig. 11) in a cam block 162. The chamber is opened for loading by actuation of a handle 180 and pushing upwards of the handle causes the 90 degree rotation.
Patent GB-1289949-A (GB)
IPC: H01J35/04
Filed: 1971-04-19
Abstract: 1289949 X-ray tubes PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 19 April 1971 [26 March 1970] 25028/71 Heading H1D In an X-ray tube comprising an anode and a cathode mounted at opposite ends of a glass envelope, the cathode mounting is deformable to permit alignment or adjustment of the electrodes. In Fig. 1, the cathode structure is supported from a metal tube 9 sealed through a disc 11 which is sealed to the glass envelope through a ring 12. The adjusting means comprises a sleeve 13 which is clamped to the ring 12 and which carries a further sleeve 14 rotatable through 360 degrees. A screw 15 threaded in sleeve 14 bears on a hard steel tube 17 which slips inside the cathode support tube 9, and when the screw is tightened the joint between the tube 9 and the disc 11 is plastically deformed. The screw is subsequently loosened to relieve stresses, and final adjustment of the cathode position may be made by means of three screws 19 (of which only one is shown in Fig. 1) which bear on the disc 11 and which are threaded in a steel plate 18 which bears on and is preferably welded to the cathode tube 9. The latter means may provide sufficient adjustment without using the first means, in which case the screws 19 should be loosened after initial adjustment in order to relieve stresses, and subsequently tightened for the final adjustment. The adjustment may be made to secure uniform radiation in all directions, in which case the sleeve 14 is rotated until the screw 15 points in the direction of minimum radiation and the screw is tightened until the maximum variation is less than 10%; alternatively if the target area on the anode becomes fused, adjustment may be necessary to move the focal spot to a fresh target area.
Patent GB-1297733-A (GB)
IPC: F16J9/20
Filed: 1971-04-19
Abstract: 1297733 Pistons MASCHINENFABRIK AUGSBURG-NURNBEKG AG 19 April 1971 [21 Feb 1970] 22406/71 Heading F2T In a piston and ring assembly comprising an oil scraper ring 4 having passage 15 therein interconnecting spaces 13 and 14 at the front and back of the ring respectively, the space 14 at the back of the ring is connected by openings 17 in the piston with an annular space 18 which, in use, is adjacent the cylinder wall 6. The scraper ring is of H-section and has flanges 8 and 9 urged against the cylinder wall by a coil spring 7. The openings 17 are in a skirt ring 16 forming a land for the scraper ring and a conical skirt 19 extends from the piston with its free edge 20 having a clearance 21 with the cylinder wall. In use oil scraped from the cylinder wall by flange 8 flows through passages 15, space 14 and openings 17 to space 18 where it escapes, together with the oil removed by flange 9, through the clearance 21. An additional scraper edge 25 is formed on the piston.
Patent GB-1302268-A (GB)
IPC: G03B21/32
Filed: 1970-07-06
Abstract: 1302268 Recording sound for cine-films INGENJORSFIRMAN GA SUNDQVIST AB 6 July 1970 32588/70 Heading G5R During the shooting of a film, sound and a pilot tone having a frequency dependent on the speed of the camera are recorded on a twotrack tape recorder 22 which is subsequently set to play back while connected to an editor 1 in which a motor 19 controlled by the pilot tone through a servo system 20 drives a sprocketed tape 4 on which the sound is re-recorded; the film 8 is then placed between reels 2, 2<SP>1</SP> and driven synchronously with the tape 4 by the motor 19 past an optical projection system 10, 11 so that film and tape may be edited together. Further sound effects may be added on other tracks of the tape 4, all then being mixed and re-recorded on the sound track of the film 8 which may be a magnetic stripe fed from a reel 14 to join the film in a gluing device (15), Fig. 3 (not shown). The projection screen 13 may be removed and replaced by an adaptor carrying a cine-camera 23 to produce a print of the film, the brightness of the projection lamp 10 being varied under the control of a tone previously recorded on one track of the tape 4.
Patent GB-1302648-A (GB)
IPC: F21V3/00
Filed: 1971-04-19
Abstract: 1302648 Light refracting panel R A D SCHWARTZ 19 April 1971 [2 Feb 1970] 22644/71 Heading F4R A light refracting panel is covered on its lower surface with a plurality of adjacent cells each comprising a cell wall 20 within the confines of which the panel is provided on either its upper or lower surface with a plurality of prisms 28 concentric with each other and the cell wall. Each prism has a pair of asymmetrical surfaces extending from the panel surface, the one surface facing the central axis of the cell having a greater slope relative to said axis than the other surface facing the cell wall, the greater slope being 50 degrees and the lesser slope being 10 degrees with said axis. The spacing between adjacent prisms is approximately the same as the thickness of said membrane. The cells may be circular or square and the cell walls are substantially deeper than the depth of said prisms. Portions of the panel between the cells are frosted and the prisms are polished, the whole being made of plastics which may be colour tinted.
Patent GB-1304038-A (GB)
IPC: C08F236/04
Filed: 1970-04-24
Abstract: 1304038 Butadiene-alphaolefin alternating copolymerization catalyst MARUZEN PETROCHEMICAL CO Ltd 24 April 1970 [25 April 1969 13 May 1969 19 June 1969 3 July 1969 15 Aug 1969 10 Sept 1969 25 Sept 1969 30 Sept 1969 (2) 9 Oct 1969 31 Oct 1969 (2) 4 Dec 1969 17 March 1970] 19705/70 Heading C3P Butadiene and a C 3-6  alpha-olefin or styrene are copolymerized, to form an alternating copolymer, in the presence of a catalyst comprizing (a) an organoaluminium compound, (b) a compound containing a V-halogen bond, (c) a compound containing a MO hydrocarbyl or MO haloether linkage, where M is an atom whose electronegativity is lower than 2À2, and optionally (a) a halogen, halide, or metal or metalloid oxide. Conventional Zeigler alternating copolymerization techniques are employed. In examples, the olefin is propylene, styrene, butene-1, pentene-1, 4-methyl pentene-1 or hexene-1, while the catalyst components are (a) Al(iBu) 3 , AlEt 3 , or AlEt 2 Cl; (b) VOCl 3  or VOCl 4 ; (c) Al(OiPr) 3 , AlCl(OiPr) 2 , NaOEt, B(OPn) 3 , Ti(OBu) 4 , P(OPh) 3 , AlCl 3 -propylene oxide reaction product, Al(iOPr) 3 -H 2 O, AlEt 3 -iPrOH or EtOH-H 2 O, Ti(OiPr) 4 -H 2 O, B(OEt) 3 -H 2 O, P(OnBu) 3 -H 2 O, OV(OEt) 3 -H 2 O, Al 2 O(CH 3 COO) 4 -OV(CH 3 COO) 2 -, Zn(CH 3 COO) 2 -Zr(CH 3 COO) 4 -, Mn(CH 3 COO) 2 -, Pb(CH 3 COO) 2 - Al(OiPr) 3 , Cd(CH 3 COO) 2 -P(OPh) 3 , OV(CH 3 COO) 2 -Si(OEt) 4 , Ti(OBu) 4 -Cu(CH 3 COO) 2 , (CaOOC.CH 3 ) 2 -Ti(OBu) 4 , Co(CH 3 .COO) 2 -B(OPh) 3  or Al(O-s-Bu) 3 , NaOEt; and (d) TiCl 4 , SnCl 4 , +BuCl, AlCl(iOPr) 2 , I 2 , AlCl 3 , CuCl, ZnCl 2 , MgCl 2 , SbCl 5 , MnCl 2 , PCl 5 , AlEtCl 2 , MgO, ZnO, Al 2 O 3 , silicaalumina, B 2 O 3 , TiO 2 , zeolites, V 2 O 5 , CoBr 2 , ZnI 2 , BF 3 .OEt 2 , or AlCl 3 .Et 2 O.
Patent GB-1308618-A (GB)
Title: Manufacture of fluid-filled electric cables
IPC: H01B13/30
Filed: 1969-11-06
Abstract: 1308618 Electric cables BRITISH INSULATED CALLENDERS CABLES Ltd 5 Nov 1970 [6 Nov 1969] 54428/69 Heading H1A A method of impregnating and sheathing an oil-filled electric cable comprises drawing the cable core 21 by flexible withdrawal means 27 from a drying tank 23, to a sheathing press 30, through an evacuated or oil-filled tube 29 which extends between, and is connected in a fluidtight manner to, the drying tank and sheathing press. The leading end of sheath 32 being extruded from the press is sealed to fitting 28 through which the flexible withdrawal means can be passed in fluid tight manner; the rate of extrusion of the sheath is reduced and the flexible withdrawal means is connected to the cable core, e.g. by the nose termination 25 which seals the drying tank by means of an inflatable seal at the mouth 24; the tube is extended between the tank and the sheathing press and is evacuated or filled with oil; the seal at the mouth of the drying tank is broken and the flexible withdrawal means drawn, by use of haul off device 34, through the fitting 28 to withdraw the cable core from the drying tank towards the sheathing press. The role of extrusion of the aluminium or aluminium based alloy sheath is gradually increased and the cable is sheathed, and passed through a corrugating head 35. Fitting 28 comprises a body having a bore 4 through which the flexible withdrawal means passes, means for effecting a fluid-tight seal with the flexible withdrawal means, and means for connecting the bore of the body to a vacuum pump or a source of insulating oil. - The embodiment shown comprises a stem 1 and a yoke 2 detachably connected in fluid-tight manner by nut 3. An elastomeric sleeve 5 is carried by stem 1. Tightening the gland nut 6 deforms the rings 7 of elastomeric material radially inwardly thus producing a fluid-tight seal with the flexible line passing through the bore 4. The flexible line may be locked in the fitting by use of a grub screw 8. A detachable cap 9 can be screwed to the yoke 2 after the flexible line has been cut. Spigot 10 connected to the bore of the fitting is used for connecting the bore to a vacuum pump or a source of oil.
Patent GB-1313842-A (GB)
Title: Rotary engines
IPC: F02B53/00
Filed: 1969-02-07
Abstract: 1313842 Rotary positive - displacement engines A A JONES 5 May 1970 [7 Feb 1969] 6835/69 Heading F1F An I. C. engine has a unit A serving as a compressor for a unit B wherein combustion and expansion take place, each unit having a rotor 21 secured to a common shaft 23 and co-operating with spring-loaded pivoted gates 10, 11 adjacent induction ports 8 or exhaust ports 7 in a watercooled stator 1 between plates 3. Spark plugs are located at 9 and seals at 17, 24. Each rotor has two parts sealed at 25 and urged axially apart by springs (not shown). Transfer means between the two units are not shown. In a second embodiment, Fig. 5 (not shown), each rotor cooperates with a single gate. In third and fourth embodiments, Figs. 6 and 7 (not shown), the gates are lodged in the rotors, these embodiments differing from each other only in respect of the profiles of the inner peripheries of the stators.
Patent GB-1321672-A (GB)
Title: Photographic products and processes
IPC: G03C8/44
Filed: 1970-06-29
Abstract: 1321672 Photographic colour transfer materials INTERNATIONAL POLAROID CORP 29 June 1970 31411/70 Addition to 1220474 Heading G2C A colour transfer film unit yielding on exposure and development a colour print consisting of a positive colour image over a negative image and separated therefrom by a light opacifying layer, contains a support and layers laminated thereto consisting of a polymeric dye-image receiving layer and a silver halide layer containing a dyeimage-forming compound e.g. a dye-developer, a light opacifying material comprising e.g. TiO 2  being present between the image-receiving and silver halide layers as a light opacifying layer or, if an aqueous alkaline processing composition is positioned to be spread between the said layers, then the light opacifying material may be in the processing composition, and which the film unit contains a single polymeric acid layer on the side of the silver halide layer distant from the image-receiving layer, the polymeric acid layer containing sufficient acidifying groups to reduce the pH of the aqueous alkaline processing composition after development to a pH at which the dye image forming material is substantially non-diffusible. Preferred film-units comprise in order a first support, a polymeric acid layer, a silver halide layer, an image-receiving layer and a second transparent support and an aqueous alkaline processing composition in a rupturable container positioned to be spread between the silver halide and image-receiving layers, the first support being transparent when a light opacifying layer is situated between the silver halide and image-receiving layers, or being opaque when the processing composition contains the light opacifying material.
Patent GB-1323857-A (GB)
Title: Multi-cylinder hot gas engines
IPC: F02G1/044
Filed: 1972-02-19
Abstract: 1323857 Hot gas engines UNITED STIRLING (SWEDEN) AB & CO KB 19 Feb 1972 7801/72 Heading F1S The invention relates to a multi-cylinder hot gas engine comprising two or more burner units mounted in at least two combustion chambers 26, 27 arranged at opposite sides of a vertical plane extending parallel to or containing the axis of rotation of a crank-shaft 17 of the engine. According to the invention a heat exchanger 29 for heating combustion air by means of exhaust gases is mounted between the combustion chambers. Combustion air is introduced through a space 28 between double walls surrounding the upper part of the engine and is fed to the top of the heat exchanger 29. The engine comprises 8 cylinders only two of which are shown. In a modification the heat exchanger is arranged in the form of a V and the exhaust gases pass to a central duct between two heat exchanging elements.
Patent GB-1324162-A (GB)
Title: Aromatic dicarboxylic acids
IPC: C10L1/188
Filed: 1970-09-10
Abstract: 1324162 Aromatic dicarboxylic acids SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 10 Sept 1970 [10 Sept 1969] 44633/79 Heading C2C [Also in Division C5] The invention comprises compounds of the formula wherein X represents OH, R 2  represents a hydrocarbon group having at least 6 C atoms and R 1  and R 3  represent H atoms or hydrocarbon groups. They may be obtained by alkylation of phenol followed by phenation, carboxylation and hydrolysis. The desired isomers maybe isolated from a mixture of isomers by chromatography. In an example, 2-hydroxy-5-cetylbenzene-1,3-dicarboxylic acid was isolated. These compounds may be used in hydrocarbon oil compositions.
Patent GB-1324778-A (GB)
Title: Bins
IPC: B65D90/08
Filed: 1971-05-13
Abstract: 1324778 Storage bins CARIER (BRAINTREE) Ltd 13-May 1971 [1 June 1970] 26418/ 70 Heading E1T A joint between adjacent flanged panels 1, 2 of a storage bin has the nut and bolt arrangement 5, 6 masked by a plate 10 which is secured by a self-tapping screw 9 to a bracket 7 bolted to the flanges.