baber/WOPTO huggingface dataset:
Patent GB-833921-A (GB)
Title: Improvements in trace brightening circuit
IPC: F02B77/08
Filed: 1957-10-30
Abstract: 833,921. Electric tests. HEYER INDUSTRIES Inc. Oct. 30, 1957 [Nov. 9, 1956], No. 33852/57. Class 37. In order to examine the high-frequency ionization peaks of an engine ignition system, they are separated and used to intensify the trace on a cathode-ray tube. Fig. 2 shows an arrangement in which triode 34 normally held strongly conducting by a small positive bias on the grid produced by a high resistor 44 has a negative signal from the engine applied to the grid through capacitor 46, which separates the high-frequency peaks to drive the grid more negative. The positive triode output is then applied to the grid 52 of the cathode-ray tube to intensify peaks causing incidental defocussing which is not significant. Alternatively, or in addition, a negative signal is applied to the cathode of the C.R.T. The high-frequency peaks may be separated by a small capacitor and applied directly to the grid or cathode of the C.R.T.
Patent GB-488980-A (GB)
Title: Improvements in or relating to air- or gas-cooled electric apparatus, such as transformers and condensers
IPC: H01F27/08
Filed: 1937-12-07
Abstract: 488,980. Condensers. SIEMENSSCHUCEERTWERKE AKT.-GES. Dec. 7, 1937, No. 33865. Convention date, Dec. 7, 1936. [Class 37] [Also in Group XXXV] Air- or gas-cooled electrical apparatus such as a condenser is enclosed in a casing having cooling elements (such as finned tubes 5) on its walls, the air &c. within the casing being circulated by a fan 17 through the cooling elements and being constrained to pass closely over the apparatus to be cooled as by providing a baffle plate 23 between the apparatus and the casing walls. The fan motor 19 may be mounted over a central opening, in a partition 10 extending across the casing and secured in a gas-tight manner to the walls. Switches associated with the apparatus may be mounted in the upper chamber formed by the partition 10. The upper chamber may communicate with the atmosphere through a breather 26 containing a drying agent and gauzes 27. An alternative form of cooling element, Fig. 2 (not shown), comprises corrugations in the casing wall with an internal baffle leaving openings at the top and bottom of the corrugations. The fan motor may be supplied with the whole or a fraction of the load current of the apparatus to be cooled, and it may be controlled by thermal relays responding to the temperature thereof. An external fan, if desired, driven by a motor within the casing may be provided for blowing air over the cooling elements 5.
Patent GB-1433919-A (GB)
Title: Photosensitive composition
IPC: G03F7/008
Filed: 1973-07-17
Abstract: 1433919 Photoresist materials OJI PAPER CO Ltd 17 July 1973 33909/73 Heading C3R [Also in Divisions C2 and G2] A photoresist composition comprises an alkalisoluble phenolic resin and 5-30% by weight, based on the weight of the phenolic resin, of a mono- or di-azidopyrene which may be substituted by one or two halogen, nitro, monoalkylamino, alkoxy, hydroxyl, acyl, carboxyl, carboxymethyl, sulphonic acid or acylamino groups. The composition may contain up to 100% by weight, based on the weight of the phenolic resin, an alkali-soluble acrylic or vinyl polymer or a dye. The composition may be coated on a support (e.g. a zinc support which has been roughened with a wire brush and pumice stone and treated with an aqueous solution of acetic acid or an Al support grained with alumina and treated with caustic soda solution and then with an aqueous solution of acetic acid), imagewise exposed and developed with aqueous alkaline solution (pH 11À5-14) to remove the unexposed areas and leave a printing plate.
Patent GB-466860-A (GB)
Title: Improvements in inserted tooth saws
IPC: B23D61/02
Filed: 1935-12-06
Abstract: 466,860. Inserted - tooth saws. SPEAR & JACKSON, Ltd., and COOMBE, L. J. Dec. 6, 1935, No. 33913. [Class 145 (ii)] In an inserted-tooth saw of the kind comprising toothed members b mounted by rivets pins or the like on a body or backing-plate a, the engaging faces of the members being formed with complementary ribs or projections f and recesses g, the seating-surfaces between the members b and body a extend in a continuous regular or unbroken manner throughout the whole length or periphery of the saw. In the form shown a continuous tongue c on the periphery of the saw engages in grooves d in the bases of the toothed members. The rear of each tooth may be ground away, as shown at h, for clearance, and the members may taper downwardly, as shown in Fig. 2.
Patent GB-1514728-A (GB)
Title: Trailed vehicle with a spring suspension
IPC: B60G9/04
Filed: 1975-08-15
Abstract: 1514728 Beam axle suspension G D MALCOLM 15 Aug 1975 [16 Aug 1974] 34063/75 Heading B7D A trailer vehicle has a beam axle suspension including on each side of the trailer a leading radius arm 11 which is pivotally attached to the trailer frame 10 at a point which is located at a level higher than its point of attachment to the axle 1 so that upward deflection of one end of the axle under bump conditions moves that end of the axle forwards to obtain a steering effect which opposes the effect of the displacement force on the trailer. The frame 10 is supported on the axle 1 by leaf springs 2 each of which has its ends connected to the frame by slipper boxes 7, 9 or shackles permitting longitudinal movement of the spring. Series of holes 35, 39 provide for adjustment of the position of the arm 11 or for the use of arms of different lengths. Coil, rubber or pneumatic may be used instead of the leaf springs shown.
Patent GB-1394282-A (GB)
Title: Aqueous dispersions based on heat hardenable phenolic resins
IPC: C08J3/03
Filed: 1972-07-20
Abstract: 1394282 Paperboard UNION CARBIDE CORP 20 July 1972 [21 July 1971 29 March 1972] 34110/72 Heading D2B [Also in Division C3] A hard, rigid board of paper pulp fibres bonded by a phenolic resin is made by preparing a mixture a kraft paper pulp and an aqueous dispersion comprising a phenol-formaldehyde resole resin, gum arabic and guar gum, adjusting its pH to 4.5 with alum, collecting the resin-pulp mixture on a 100 mesh screen to form a sheet which is then dried at room temperature. The dried sheet is then hot pressed.
Patent GB-1498110-A (GB)
Title: Method and means for preventing degradation of threshold voltage of filament-forming memory semiconductor device
IPC: G11C17/00
Filed: 1975-08-15
Abstract: 1498110 Memory resetting ENERGY CONVERSION DEVICES Inc 15 Aug 1975 [19 Aug 1974] 34122/75 Heading G4C  A memory in which data is stored by selectively setting a filament of an amorphorus semiconductor material having a high resistance to a crystalline state in which it has a low resistance is reset by applying thereto a burst of reset pulses spaced apart so that the filament, heated by each pulse, cools only partially between successive pulses. This fully resets the filament and it is stated that the threshold voltage, at which the filament is set, is degraded as a result of successive set-reset cycles or high ambient temperatures less than in the prior art. The reset pulses are each of substantially less duration than a set pulse and may be of lower current than a set pulse. Successive reset pulses in each burst may increase in voltage. A plurality of such memories may be formed into a matrix on a semiconductor chip, individual memories being selected by X and Y select units.
Patent GB-282432-A (GB)
IPC: F26B11/04
Filed: 1927-12-16
Abstract: 282,432. Vernay, J. B. Dec. 18, 1926, [Convention date]. Addition to 262,464. Continuous-discharge apparatus, rotary; agitating appliances.-The material discharge ends of the rotary drying-cylinders described in the parent Specification are provided with teeth 30 which coact with teeth 29 on the lower part of the fixed casing to disintegrate agglomerated material. The spaces between the teeth on the cylinders and those on the casing are reduced from the inlet to the outlet of the cylinders. Further, the innermost cylinder is replaced by a conical shell, and the upper part of the casing is connected to an exhaust pump.
Patent GB-449665-A (GB)
Title: Improvements in brackets for luggage racks
IPC: B61D37/00
Filed: 1935-12-10
Abstract: 449,665. Vehicle luggage - racks; brackets. BUNN, C. W., 1, Herbert Street, West Bromwich, Staffordshire. Dec. 10, 1935, No. 34137. [Class 103 (ii)] [See also Group XIV] In passenger vehicles in which interior luggage-racks are supported by two-armed brackets, each having a substantially horizontal arm connected to one side of the vehicle body and a second arm extending upwardly at an acute angle to the first arm and connected to the roof, the brackets are formed by bending one or more strips of metal to form the two arms and applying one or more ornamental covering strips, e.g. of synthetic resin, casein, &c., or metal, to the exposed surface of one arm. Fig. 2 shows a bracket without the covering strip and comprising arms 1, 3 having attachment portions 2, 4 and a junction portion 5. To the portion 5 is secured a metal facia member 20, Fig. 5, of tubular, channel, or other form, and having a flange 22 engaging under the arm 1 and a flange 23 engaging the edge 24 of the base 25 of the rack, the facia member being covered by an ornamental corner cap 17 connected to the bracket by a stud 18. The ornamental strip 28 may be mounted in channels in metal strips 26, Fig. 6, 35, Fig. 8, or 39, Fig. 9, each screwed to the arm 3; or, as shown, in Fig. 7, the ornamental strip may be secured between the arm 3 and an outer hollow metal strip 32 ; or the ornamental strip may be in the form of a metal section 42, Fig. 10, screwed to the arm 3. The arm 3 may be in two adjustablyconnected parts, or the upper attachment portion 4 may be adjustably secured to the arm, in which latter case the arm may be made initially of excess length and cut off to the required length prior to the portion 4 being secured thereto.
Patent GB-896592-A (GB)
Title: Improvements in and relating to apparatus responsive to the relative speed of machine elements
Inventor: ASBURY ALLAN
IPC: D21G9/00
Filed: 1957-11-01
Abstract: 896,592. Measuring draw of paper. ENGLISH ELECTRIC CO. Ltd. Oct. 29, 1958 [Nov. 1, 1957], No. 34177/57. Class 96. [Also in Group XXXVIII] In a device for measuring the draw of paper (i.e. its change in length as it passes from one stage 11 to a second stage 12 in its manufacture) pulses are produced by a tachogenerator 19, clipper 21 and differentiator 22 with a frequency corresponding to the speed of the driving roll of the first stage, and counted by a first counter 24 and pulses are similarly produced with a frequency corresponding to the speed of the driving roll of the second stage and counted by a counter 23. The apparatus can function in two ways: either the first counter 24 can repeatedly reset both itself and the second counter 23 to zero every time it reaches a predetermined count-in which case the highest number recorded in the second counter 23 will correspond to the required draw, or the first counter, when it reaches a certain predetermined count, can cause counting to stop in the second counter until it is reset by the operatorin which case the operator can read the second counter at leisure instead of having to watch it continually. The counter 23 could provide an analogue output to effect some retroactive control of the draw in the paper-making machine.
Patent GB-308288-A (GB)
Title: Improvements in or relating to circuit arrangements embodying discharge tubes
IPC: H01J61/92
Filed: 1927-12-16
Abstract: 308,288. Dicker, S. G. S., (Naamlooze Vennootschap Philips' Gloeilampenfabrieken) Dec. 16, 1927. Vacuum tubes.-To prevent interruption of the discharge in incandescent-cathode gas-filled arcdischarge rectifying or other tubes, when the tube is approached or by similar causes, a point of the direct-current circuit is connected to one or more conducting screens arranged in the vicinity of the tube or through a high impedance to a point that is approximately at earth potential. Fig. 1 shows a tube having a cathode 2 and two anodes 3, 4, and an external screen 14 connected through a high impedance or resistance 15, such as a lead-pencil line, to a point of the directcurrent circuit. In the device shown in Fig. 2, the screen is formed by tin-foil or like coating 25 on the wall of the tube. The screen may surround not only the tube, but auxiliary devices such as' a transformer and resistance with it.
Patent GB-839832-A (GB)
Title: Improved detonating cord
IPC: C06C5/04
Filed: 1958-10-27
Abstract: 839,832. Detonating cords. DU PONT DE NEMOURS & CO., E. I. Oct. 27, 1958 [Nov. 15, 1957], No. 34371/58. Classes 9(1) and 9(2) A detonating fuze cord comprises a core 1 of dipicryl sulphone surrounded by a flexible sheath 2, e.g. of textile, which may have an outer waterproof reinforcement 3, e.g. of plastic. In an example, an aqueous slurry of bis (2:4:6-trinitrophenyl) sulphone was loaded into a textile sheath as it was formed and the water was then evaporated through the porous textile. A layer of asphalted jute and a layer of waxed textile was then formed around the sheath to produce a cord of 0.210 inch diameter containing 50 grains of dipicryl sulphone per foot length. In a second example, polyethylene was used to cover the sheath. A lead or tin tube filled with dipicryl sulphone may be reduced by drawing the tube through a series of dies, to form the cord.
Patent GB-1062694-A (GB)
Title: Improvements in photographic apparatus
IPC: G03B17/34
Filed: 1964-08-24
Abstract: 1,062,694. Photographic films. INTERNATIONAL POLAROID CORPORATION. Aug. 24, 1964 [Sept. 3, 1963], No.34525/64. Addition to 921,928. Heading G2A. In the type of film pack in which a pod of processing liquid is ruptured to effect a diffusion transfer between an exposed negative and a positive sheet in contact therewith, as the sheets are pulled out of a container, frictional means are provided to prevent movement of the positive sheet until the negative sheet has moved properly into registration with it. Initially, the film pack is housed in a container 30, the negative 11 being disposed with its light-sensitive face opposite an opening 34 through which the photographic exposure is made. It is positioned in the focal plane by a pressure plate 33 having a rounded end 51. By means of a series of leader and connector strips 19, 20, 23, it is connected to the positive sheet 12, the leader section 19 carrying the pod 24 of processing liquid. After exposure, the sheets are pulled out of the camera by means of the leader tab 18, which extends through opening 66 in the camera wall. The leaders to the positive and negative sheets, and hence the sheets themselves, are led between the rollers 64, 65, which rupture the pod 24, and spread its contents between the sheets. A spring- loaded member 69 is provided to control the transverse spread of the processing liquid. When the initial pull is applied, the positive sheet may be given a certain amount of longitudinal displacement before the negative is brought into proper register with it, resulting in a misregistered or blurred transfer. This is prevented by a member 57 mounted on the outside of the container and projecting into the interior thereof. The end of this member carries a block 58 of material such as polyurethane foam, which engages against the positive sheet 12 and exerts a frictional drag thereon. Thus the positive is held against incipient movement until positive and negative are in proper register, when they can then be pulled together to pass between rollers 64, 65.
Patent GB-772464-A (GB)
Title: Improvements in or relating to valves or cocks
IPC: F16K5/16
Filed: 1954-11-29
Abstract: 772,464. Valves. WILLSON, C. R. Nov. 29, 1954, No. 34568/54. Class 135. In a rotary plug valve, means to ensure easing of the plug 5 from its seating before it can be rotated comprises two circumferentially spaced projections or pins 22, 23 carried by the valve stem and co-operating selectively with slots or grooves 24a, 24b extending parallel to the valve stem. Before the plug can be turned, it must be raised until a pin engaged in its slot rises clear of the slot, and the subsequent angular movement of the plug is limited by the engagement of the other pin with an abutment adjacent the end of the other slot. The slots are provided in the yoke 11 extending upwardly from the cover of the valve casing. Alternatively, the teeth of a sprocket-like member carried by the stem can engage a plurality of grooves formed in an annulus surrounding the stem. For lifting the stem, the latter carries a screw 12 rotatable by a handle 20, and the plug is turned by means of a separate handle 21. Instead of a separate handle for rotating the stem, a square end engageable by a spanner, can be formed on the stem. Difficulty in raising the plug due to the formation of rust on the surface of the plug facing the inlet and outlet ports is avoided by providing the plug with undercut recesses 28 at the parts facing the openings.
Patent GB-801888-A (GB)
Title: Improvements in or relating to hydraulically operated machines for stretching metal plates and other rolled or extruded metal members
Inventor: ROWLES REGINALD VICTOR
IPC: B21D25/00
Filed: 1955-12-02
Abstract: 801,888. Stretching. FIELDING & PLATT, Ltd. Nov. 22, 1956 [Dec. 2, 1955], No. 34631/55. Class 83 (4). A machine for stretching metal plates and other metal members comprises a pair of gripping cross-heads for gripping opposite ends of the member to be stretched, said crossheads being movably supported on a foundation for movement towards and away from each other, hydraulic means for loading one crosshead in a direction away from the other to stretch a member gripped therebetween and compression members extending between the said cross-heads for supporting the thrust therebetween during the stretching operation, the said compression members being movable with respect to the foundation in the direction of relative movement of the crossheads. A pair of gripping cross-heads 4, 5, each supported on bogeys 6 running on rails 3, each comprises a plurality of gripping elements 7 the central elements being, if desired, stronger than the outer elements. A pair of compression members 9, 10 extend between'the cross-heads 4, 5 and are slidably supported on walls 2 of the machine pit at points 11 spaced along their length, hydraulically loaded cylinders (not shown) extending longitudinally of the walls 2 connect the walls 2 and the compression members to position the latter longitudinally. Laterally extending shoes 13 on the gripper head 4, support brackets 14 for supporting pins 15 adapted to extend through selected ones of holes 12 in the compression members 9, 10, thus permitting a limited angular displacement of the cross-head 4 with respect to the compression members. The other cross-head 5 has secured on each side a hydraulic cylinder 16, the rams 17 of which engage the ends of the compression members 9, 10 to load the head 5 away from the head 4 and-effect the stretching of a plate held between the heads 4 and 5. Alternatively, the cylinders 16 may be secured to the compression members 9, 10 and the rams 17 abut the cross-head 5. The rams 17 may have a slightly spherical seating on the compression members 9, 10. An auxiliary ram and cylinder 18 co-operates with each ram 17 for initially positioning the head 5. Control means may be provided for stopping the stretching if the heads 4, 5 tilt sideways too much. Shock absorbing means as described in Specification 801,887, to which reference is made, may be provided in case the plate being stretched breaks.
Patent GB-928643-A (GB)
Title: Improvements in or relating to camera rangefinders
Inventor: BARTON NORMAN PERCY
IPC: G03B13/20
Filed: 1958-10-29
Abstract: 928,643. Camera rangefinders. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Oct. 29, 1959 [Oct. 29, 1958], No. 34653/58. Classes 97 (1) and 98 (1). A stereoscopic, wander-mark, rangefinder for cameras comprises a carrier having indicating marks which may be illuminated, a collimator, means for injecting into both lines of vision similar virtual images of the marks and for bringing the images into binocular fusion, and means for effecting relative movement between the indicating marks and the collimator to vary the position in space of the images. As shown, light from a lamp 10 passes through a plate 6, consisting of a diapositive having three small holes vertically in line, and through a collimator 12 mounted for movement along the optic axis. The light strikes a half-silvered mirror 13 and is partially reflected to a halfsilvered mirror 15 and through an aperture 2 in a casing 1 and partially transmitted to a halfsilvered mirror 14 where it is reflected to a second aperture 3 in the casing. Holes 4, 5 in the casing aligned with the holes 2, 3 allow the virtual images of the diapositive to be seen in space. A lever 18 attached to the collimator and also connected to the focusing arrangement of the camera may be moved to cause the image of the central spot to move in space. A lever 9 attached to the disc 6 and also connected to the diaphragm of the camera may be moved to cause the images of the upper and lower spots to move closer together or further apart in space and indicate the depth of focus obtaining at the particular aperture opening. In a modification the collimator may be fixed and the disc given a rotary movement, a movement to and from the collimator and a movement normal thereto.
Patent GB-1223237-A (GB)
Title: Balancing rotation reciprocation devices
Inventor: ISHIDA KENJIRO
IPC: F16F15/26
Filed: 1969-07-10
Abstract: 1,223,237. Engine balancing. K. ISHIDA. 10 July, 1969 [16 July, 1968 (2)], No. 34823/69. Heading F2U. A reciprocating engine is balanced by providing a linearly reciprocating connecting rod 1 connected to an eccentric 5 geared to the crankshaft 4 so that they rotate at equal and opposite speeds, the webs of the eccentric carrying balance masses W 4 , W 5  and the crank webs carrying further masses W 6 , W 7 , the magnitudes of the masses, their radial positioning and lateral disposition in relation to connecting rod 1 satisfying stated equations. In the arrangement shown eccentric 5 drives crank-shaft 4 through eccentric pinions 16, 19 and spur pinions 20, 21, 13, and in a second form, Figs. 7 and 8 (not shown) through an epicyclic gear (26, 27).