baber/WOPTO huggingface dataset:
Patent GB-1238023-A (GB)
IPC: B61H5/00
Filed: 1967-09-18
Abstract: 1,238,023. Railway vehicle disc brakes. GIRLING Ltd. 3 Sept., 1968 [18 Sept., 1967; 19 Feb., 1968], Nos. 42385/67 and 8047/68. Heading F2E. A railway vehicle disc brake includes a pair of levers 26, 28 pivotally mounted between the ends of a yoke comprising two plates 36, 38, a brake shoe 20, 22 being mounted about a pin 24 at the end of each lever. The brake is attached to the vehicle at three points: one to the yoke and one to each of the brake shoes. As shown, a boss 50 on the yoke plate 36 is mounted about a pivot pin 56 between the legs 52, 54 of a link which is rigid with the vehicle body, and each brake shoe is pivotally connected to the vehicle body via a drag link 58 and two pivot pins 62, 64. In operation, an hydraulic motor 86 mounted on a trunnion connected to the lever 26 is actuated to depress a rod 88 inside trunnion 80 so as to pivot lever 28 about its pivotal connection with the yoke and to cause the brake shoe 22 to engage a disc 18 mounted on the vehicle wheel 10. By reaction, brake shoe 20 is similarly engaged with a disc 16, and the connections of the brake shoes with the vehicle body allow the brake shoes to remain parallel to their adjacent discs 16, 18 while they are restrained against pivotal movement, relative to the discs, about pivots 24. Release springs 76, 78, are provided. In an alternative arrangement, Fig. 3 (not shown), the yoke pivot pin (56) is disposed perpendicular to the pin 56 as shown and is located in the yoke boss 50 by means of one or more rubber bushes (50A) such that the yoke can rotate about an axis as in the embodiment shown and is biased towards a central position. The bush (50A) also provides a resilient mounting for the motor 86. A second motor may be inserted between the free ends 94, 96 of the levers 26, 28 for the purpose of operating the brake as a parking brake.
Patent GB-1239198-A (GB)
IPC: B25C1/08
Filed: 1969-07-11
Abstract: 1,239,198. Powder actuated fastener driving tools. OLIN CORP. 11 July, 1969 [15 Aug., 1968], No. 35104/69. Heading B4C. A powder actuated tool comprises a drum 24 having a powder pellet or cartridge receiving chamber 38, the drum being rotatable between a position in which the chamber 38 is aligned with a loading port 40 and a position in which the chamber is aligned with a firing pin 142 mounted on the rearward end of a piston 8. The drum 24 is rotated by a handle 52, having a projection 66 abutting one end of a coil spring 68, the other end being fixed in the housing 10 of the block. The spring 68 biases the handle so that normally the chamber 38 is not aligned with the firing pin 142 to prevent accidental actuation. The drum 24 is provided with grooves 46, in which turbulence is set up on exploding the powder by escaping gases, preventing further gas leakage, the grooves also serving to collect excess powder on rotating the drum. A further circumferential groove 48 is provided to prevent gas leakage. The piston 8 is contained in a barrel 78 having a cap 92 screwed to its forward end, the cap having a flange 95 against which a shoulder 96 on a nut 98 abuts. In this nut 98 is screwed a muzzle 110 for housing a fastener 170 and receiving part of the piston 8, the position of the muzzle being screwably adjustable so that the end of the fastener is at the end of the muzzle, the other end of the muzzle having a buffer plate 118. The position of muzzle 110 within the nut 98 may be fixed by a screw 114, the nut being biased away from the barrel 78 by a spring 108. The piston 8 has a protective nylon or polyurethane buffer 152, and is biased forwardly by a spring 150 engaging a shoulder 82 on the barrel 78 and a flange 136 on the piston. The piston may comprise a head 126 on which is screwed a member 128 containing the firing pin 142. By exchanging the member 128 for one of another size, the volume 154 may be altered hence altering the power of the tool. In a second embodiment, Fig. 9 (not shown), this may be accomplished by having the piston head (158) and firing pin (160) integral and providing removable washers (162), (164) within the space (168). To operate the tool, the chamber 38 is loaded through the port 40 in the position shown in Fig. 5. The block 24 is then rotated until the chamber 38 is aligned with the firing pin 142, a projection (62), Fig. 4 (not shown), on the handle 52 engaging in a recess (64) in the housing 10. The tool may be gripped by a rubber or plastics hand grip 97 and the nozzle slammed against the work surface, or the housing 10 hit with a hammer to actuate the tool.
Patent GB-1252123-A (GB)
IPC: H01B7/02
Filed: 1967-09-26
Abstract: 1,252,123. Polyethylene tape. CENTRAL ELECTRICITY GENERATING BOARD. 29 Nov., 1968 [26 Sept., 1967], No. 43764/67. Heading B5B. [Also in Division H1] Polyethylene tape is made from material having a density of at least 0À94 g/ml. at 20‹ C. and formed so that the coefficients of linear thermal expansion along the length of the tape and transverse to the length of the tape are in the ratio of less than 2 : 1, preferably as close as possible to 1 : 1. In a preferred method, such tape is made from a block of solid polyethylene of the required density, which is annealed, suitably by maintaining it at about 5‹ C. below the crystallite melting point, in vacuo to prevent oxidation, to ensure a strain-free condition, and a tape cut therefrom by an operation similar to the cutting of a veneer. Thus a disc may be rotatably mounted and offered to a cutting tool, or a block may be cut to form a film which is subsequently slit in the longitudinal direction to produce tape. Alternatively, polyethylene of the required density may be melt-extruded through a slit die and the extruded film stretched transversely after it has left the die and been solidified by cooling but is still hot, the rate of extrusion and stretching being controlled so that the coefficients of linear thermal expansion along the length of the film and transverse to the film are in the ratio of less than 2 : 1, the film being subsequently slit in the direction of extrusion to produce tape. In another method, the polyethylene is melt-extruded to form a tube, the diameter of which is increased, while it is still molten, by the application of internal gaseous pressure. The tube is finally collapsed between two rollers, the blow ratio, i.e. the ratio of the diameter of the blown tube to that of the tube leaving the extruder being in the range of 2 : 1 to 4 : 1 and such as to make the ratio of the coefficients of linear thermal expansion along the tape and transversely thereto in the ratio of less than 2 : 1, the flattened tubular film then being slit longitudinally into tapes. For the application of such tapes to the manufacture of electric cables, see Division H1 abridgment.
Patent GB-1252499-A (GB)
IPC: G03B19/00
Filed: 1969-01-27
Abstract: 1,252,499. Eye-examining apparatus. P. F. M. GAMBS. Jan.27, 1969 [March 13, 1968] No.4377/69. Heading G2J. An optical apparatus, e.g. a binocular microscope for examining eyes comprises a sustained light source 8 and a flash-light source 7 housed adjacent each other, the light from source 8 passing unreflected through a prism 11 having an inclined semi-reflecting surface 15 whilst light source 7 is fully reflected from surface 15, the reflected flash beam occupying an area less than and lying within the sustained light beam so that the two beams leave surface 15 side-by-side. The resultant beam is passed through a slit 3 of rectangular cross-section and an image of this slit is formed at 5 in the eye 1. Light is reflected from the eye to a further prism 23 having a semireflecting surface 24, reflected light passing to a camera or other recording medium 26 and unreflected light to eye-pieces of the microscope. If desired the area of the beam from source 8 may be a first rectangle and the area of the beam from source 7 may be a second rectangle narrower than the first rectangle and lying centrally along the first rectangle so the two light beams leaving surface 15 have the appearances of three parallel bands. The prism 11 may be located in any one of three positions. That is, the operative position of its surface 15 may alternatively be,wholly transparent, be half-silvered or have the wholly reflecting portion for the source 7 surrounded by the transparent portions for source 8. The semi-reflecting surface 24 may have a central circular wholly reflecting portion whereby light passing unreflected to an observer is in the form of an annular beam. The prisms 11 and 23 may be two triangular prisms joined together their interfaces forming the semi-reflecting surfaces.
Patent GB-1252637-A (GB)
IPC: H02M7/217
Filed: 1969-03-21
Abstract: 1,252,637. Automatic voltage stabilisation. R.C.A. CORPORATION. March 21, 1969 [March 22, 1968], No. 14949/69. Heading G3X. Voltage regulation of a load 250 supplied from a cyclical voltage source 210, 215 is provided by a transistor 245 which conducts until the source voltage reaches a value sufficient to cause a trigger circuit 223, 224, 225 to fire a silicon controlled rectifier 230, whose conduction causes the transistor 245 to be cut off and the supply to be shunted through a resistor 243. Thus during the conductive period of transistor 245, its impedance against base bias characteristic regulates the voltage across the load 250 to counteract changes in the source voltage, which changes also determine the period of conduction to provide a further regulating function.
Patent GB-1258364-A (GB)
IPC: G01M1/34
Filed: 1970-04-17
Abstract: 1,258,364. Removing metal by fusion. SINGER-GENERAL PRECISION Inc. 17 April, 1970 [3 June, 1969], No. 18544/70. Heading B3V. An apparatus for correcting unbalances on a rotating mass 10 comprises a laser 12 for removing a portion of the mass 10 whilst it is rotating and a control device 30 connected to the laser 12 for receiving unbalance information and firing the laser 12. Any unbalance on a rotating gyroscope wheel 10 is detected by a detector 18 and the angular unbalanced position noted by an operator. The information is then dialed into a logic system 34 by the operator, whereupon it is compared with an angular reference point on the wheel determined by a photo-cell 20. A signal based on the relative angular position of unbalance is passed from the logic system 34 to a control module 32 which fires the laser 12. The wheel 10 is visually inspected during rotation by a strobe unit 40.
Patent GB-1266732-A (GB)
IPC: H04N5/222
Filed: 1969-12-12
Abstract: 1,266,732. Prompting devices. AUTOCUE Ltd. Dec.14, 1970 [Dec.12, 1969], No.60730/69. Heading G2J. In a prompting device for use in a closed circuit television prompting system, a monitor including its associated EHT generator is mounted on the front of a T.V. or cine-camera 2 and the supply transformer 3 of the prompting device is mounted separately therefrom. Fig.1 shows an arrangement wherein the supply transformer 3 is supported from the pannning handles of the camera as a counterweight to the monitor such that a performer may simultaneously be viewed by the balanced camera and receive information from the monitor. Fig.3 (not shown) illustrates an embodiment where the supply transformer is mounted on the non-rotatable base of the camera and a counterweight is employed at 3 to balance the monitor.
Patent GB-1266795-A (GB)
IPC: B22D7/00
Filed: 1969-12-18
Abstract: 1,266,795. Casting ingots; making ingots. BRITISH STEEL CORP. 18 Dec., 1970 [18 Dec., 1969], No. 61692/69. Headings B3A and B3F. [Also in Division C7]  Ingots 2 of killed steel are cast in a mould having a shoulder 4 at its top end and a mouth 6 of smaller section than the bulk of the mould cavity. The metal solidifies in the mould to form a primary pipe 8 due to shrinkage. Because the shoulder of the mould absorbs heat a thick portion of solidified metal is formed above the pipe 8. The ingot is rolled to a slab 3 (Fig. 3). The upper end of the ingot is so shaped that after rolling a square-sectioned end 10 is formed. The end 10 is cropped along the line AA without exposing the pipe cavity to the atmosphere and the slab further rolled to weld up the pipe. The steel can be killed by vacuum degassing and/or the addition of a killing agent, e.g. aluminium. To improve the quality of the steel, it can be inoculated after killing with a reducing gas, e.g. H 2 , by bubbling the gas into the steel or by adding a compound containing the gas to the steel.
Patent GB-1266888-A (GB)
IPC: E05D13/00
Filed: 1968-12-23
Abstract: 1,266,888. Sliding window or panel stabilising device. BECKETT, LAYCOCK & WATKINSON Ltd. 4 Dec., 1969 [23 Dec., 1968], No. 61001/68. Heading E1J. A sliding window or rigid panel 1 slidable along guides such as channels 3 (or alternatively the channels may be in the panel or sash stiles and cooperate with a guiding rib on the window frame jambs 4) in the jambs 4 has a stabilising device to restrict rotational movement of the panel in its own plane to prevent jamming and comprises a first cord 8, wire chain or like flexible member capable of sustaining tensile load, and attached to the channel guide 3 at 7, passing through a tubular guide 6 traversing the panel 1 at the leading (or lagging) edge transversely to the direction of sliding movement of the panel 1, the other end of the cord 8 being secured as at 9 to the opposite channel guide 3 so that the cord 8 is taut, the point 9 being on the side of the tubular guide 6 opposite to the point 7 and disposed at a distance in the direction of sliding from the point 7, this distance limiting the extent of the sliding travel of the panel, the first cord 8 thus limiting or preventing rotational motion of the panel in its own plane in one direction and a similar cord 10 limiting the rotation of the panel in the opposite direction. Counter balancing springs for the weight of the panel may be provided in vertically sliding windows or panels.
Patent GB-1295139-A (GB)
IPC: C01C3/00
Filed: 1970-06-03
Abstract: 1295139 Solvated cyanoborohydrides VENTRON CORP 3 June 1970 [16 June 1969 (2)] 26866/70 Heading C2B Li, Na, K or quaternary ammonium cyanoborohydrides are solvated with up to 1 mole of glyme, diglyme, triglyme, tetrahydrofuran or dimethylformamide per mole of cyanoborohydride; only dimethylformamide can be used to solvate potassium. The solvated compounds are prepared by adding HCN, preferably as a gas, to a mixture of the appropriate borohydride with the solvating medium, and reacting firstly at 10-35‹ C. until hydrogen evolution ceases and then at between 35‹ C. and the boiling point of the solvent. The complex can be recovered by evaporating excess solvent simultaneously with or subsequent to the second stage, and can be used as a reducing agent in the form of a solution in water or the solvent. Dioxane complexes.-Complexes of Li or Na cyanoborohydride with up to 2 moles of dioxane are obtained by adding dioxane to the above reaction mixtures at any time after hydrogen evolution ceases.
Patent GB-1297684-A (GB)
IPC: G11B15/665
Filed: 1970-09-16
Abstract: 1297684 Tape loading SONY CORP 16 Sept 1970 [22 Sept 1969(3)] 44242/70 Heading G 5 R A tape 14 is withdrawn from a cassette 10 and is looped around a heads drum 21 by a system of arms 53A, 53B, 53C and fingers 57A, 57B, 57C. With the cassette 10 in the holder 16 (Fig. 3), a handle 37 on a pivoted plate 35 is pressed to position the fingers behind the tape, as at A 1 , B 1 , C 1 , and also to release a sliding plate 41; the movement thereof, as produced by a spring 40, causes the fingers to be retracted to A 2 , B 2 , C 2 . A latched coil spring 52 is then released to cause rotation of the arms and fingers through intermediate positions A 3 , B 3  &c. to final positions A 5 , B 5 , C 5 ; since the loop A 4 , B 4 , C 4  involves the greatest loop area, the final movement causes the tape to slacken and so lose contact with the fingers, and hence to drop and so encompass the drum. In the reverse actions for unloading the tape and resetting the latches, an arm 80 causes a sleeve 78 to lift the tape over the drum.
Patent GB-1297705-A (GB)
IPC: C09B67/52
Filed: 1970-06-25
Abstract: 1297705 #-Linear transquinacridone SANDOZ Ltd 25 June 1970 [15 July 1969] 30869/70 Headings C4A and C4P The #-crystal modification of linear transquinacridone is prepared by grinding quinacridone in the absence of liquids at temperatures above 90‹ C. Grinding assistants may be present, e.g. potassium, ammonium or anhydrous calcium chlorides, sodium or aluminium sulphate and calcium carbonate, the weight ratio quinacridone grinding assistant preferably being 1 : 4 to 1 : 10. In Example 3 a colophony-modified #-quinacridone is obtained by adding an aqueous solution of colophony (Na salt) to the ground pigment and then mineral acid to cause precipitation.
Patent GB-1301237-A (GB)
IPC: A01K1/03
Filed: 1971-07-20
Abstract: 1301237 Animal cages BEKAERT SA NV 20 July 1971 [7 Aug 1970] 34056/71 Heading AIM An animal cage is formed from a number of wire mesh panels assembled in a readily releasable manner using hooks, clips or the like; the main panel member A being generally U-shaped comprising a base panel 1 and two side wall panels 2, and serving to support the other panels. End wall panels B and C, of the same width a as the base but having height b less than that of the sides, are secured to A in such a way as to leave a gap between the bottom edges 6 and the base, and to leave top edges 4 spaced from the tops 5 of the side walls. Floor panels D, E are hung level with the edges 6 defining with the base a space to receive droppings tray F of metal or plastics; rebates 8 being provided in wall panels B, C for the sides of the tray. Top panel G fits at a level with top edges 4, leaving upstanding portions of the side walls 2. A further cage may be engaged between these portions and its base may form the top panel for the lower cage.
Patent GB-1313592-A (GB)
Title: Method and apparatus of a continuous polymerization
IPC: C08G69/16
Filed: 1970-04-28
Abstract: 1313592 Mixing flowing streams; polymerisation apparatus TORAY INDUSTRIES Inc 28 April 1970 [10 May 1969 (2) 16 May 1969 4 July 1969 11 Nov 1969 17 Dec 1969 18 Dec 1969] 20242/70 Headings B1C and B1X [Also in Division C3J  Apparatus for effecting polyamide polymerization comprises a cylindrical column 2 with means for interchanging and amalgamating the flows in axial and peripheral zones. The column is heated at 4 and cooled at 6; it is stated that ring opening and addition polymerization occur in the upper part of the column and condensation polymerization in the lower part. As shown in Fig. 1, the central flow is collected by a funnel 11 and transferred by a gear pump 13 to a peripheral distributing ring (see also Figs. 2 and 3, not shown). The peripheral flow being brought to the axis by displacement. The collection and distribution arrangement may be inverted so that the ring collects the perhipheral flow and the funnel discharges it axially (see Fig. 4, not shown). In another arrangement, Fig. 6, pairs of inverted conical baffles 61 are arranged on a rod 62, axial flow being received on the inside of the inner cone and transferred by tubes 66 to the outside of the outer cone, the peripheral flow being guided between the cones to the axis. Other arrangements may comprise tubes (74) between annular rings (72, 73) leading from periphery to axis and vice versa (see Figs. 8 and 9, not shown), or a cylinder 91 divided into upper and lower chambers by a horizontal partition 92, the peripheral flow above a sinuous baffle 93 being conducted by perforations 96 to the lower chamber while the flow into the upper chamber is guided out below the baffle. In the hydrolytic polymerization of e-caprolactam, the upper part of the column is maintained at 250-350‹C and the lower part at 230-270‹C. In examples, there was a reduced temperature difference when the polymer flow transposition arrangement was included in the column, with reduction in the percentage monomer and oligomer content of the product and in its viscosity variation.
Patent GB-1316114-A (GB)
Title: Light filters
IPC: G03F7/00
Filed: 1969-09-27
Abstract: 1316114 Optical Filters E M I Ltd 4 Sept 1970 [27 Sept 1969] 47629/69 Heading G2J A method of producing filters includes the steps of dyeing selected regions of a surface of a base medium, and coating this surface with a substance to substantially fill undulations produced on the surface by the dyeing, the refractive index of the coating substance being so chosen in relation to that of the base medium that the scattering effect exerted on incident light by the undulations is reduced as compared with the scattering effect which would have been exerted upon the light had it been directly incident on the surface. The base medium may be gelatin, and the substance an optical cement, which may also attach the base medium to a flat, translucent support, e.g. of glass. The regions of the surface may be strips, and these may be applied from a material having relieved portions corresponding to the strips and coated with dye. The relieved portions may be produced by removing unexposed portions of a photographic image produced by a master which has the required filter pattern.
Patent GB-1317949-A (GB)
Title: Polyurethane elastomers
IPC: C08G18/67
Filed: 1970-07-17
Abstract: 1317949 Packaging containers WITCO CHEMICAL CORP 17 July 1970 34893/70 Heading B8C [Also in Division C3] Uncured solid polyurethane elastomers are prepared by heating an active-hydrogen containing linear and/or branched polymer and an organic polyisocyanate in a reaction container formed of polyethylene or polypropylene and removable by cutting and tearing from the polyurethane elastomer formed therein. During the heating the reaction container may be disposed in a supporting container having a sealing means for the contents, e.g. a tight fitting lid, the reaction containing closely conforming to the interior walls of the supporting container. The reaction container is suitably moulded from high-density polyethylene. The uncured polyurethane may be stored or transported in the reaction container which is stripped from the polyurethane when further processing is to be carried out.
Patent GB-1324698-A (GB)
Title: 1,2,4-benzothiadiazine-1,1-dioxide derivatives
IPC: C07D285/30
Filed: 1970-10-02
Abstract: 1324698 3 - Cyanoalkyl - 6 - chloro - 7- sulphamoyl - 1,2,4 - benzothiadiazine - 1,1 - dioxides LABORATOIRE L LAFON 1 Oct 1971 [2 Oct 1970] 47052/70 Heading C2C Novel 3 - cyanoalkyl - 6 - chloro - 7 - sulphamoyl - 1,2,4 - benzothiadiazine - 1,1 - dioxides of the general formula wherein A is a direct bond or a C 1-5  alkylene group, B is a hydrogen atom or an alkyl, aryl or nitrile group and the dotted line is an optional bond, are prepared (a) by reaction of 2-chloro 4-aminobenzene-1,5-disulphonamide with a nitrile of the general formula RCOACHBCN, wherein R is a hydrogen (giving a product in which the optional bond is absent) or chlorine (giving a product containing the optional bond) atom, followed, if necessary, by cyclization, or (b) when the optional bond is absent and A is a direct bond, by reaction of 2-chloro-4-aminobenzene-1,5-disulphonamide with an alcoholate of the general formula NaOCH=CBCN. When R is a chlorine atom in (a), an intermediate amide of the general formula may be isolated. Pharmaceutical compositions having diuretic activity comprise, as active ingredient, at least one 3-cyanoalkyl-6-chloro-7-sulphamoyl-1,2,4- benzothiadiazine-1,1-dioxide of the first general formula above, together with a solid or liquid pharmaceutically acceptable carrier.