baber/WOPTO huggingface dataset:
Patent GB-894395-A (GB)
Title: Improvements relating to graft copolymers of condensation polymers
IPC: C08F283/00
Filed: 1958-10-30
Abstract: Graft copolymers of synthetic condensation polymers having recurring oxygen or sulphur atoms as the sole heteroatoms in the chain, are made by producing free radicals on the condensation polymer by means of high energy ionizing radiation while it is in contact with an aliphatically unsaturated compound containing an amide group, or a polymer of such a compound, e.g. acrylamide, methacrylamide, ethacrylamide, N-methylolacrylamide, vinyl sulphonamide, vinyl ureas, N-methyl-N-vinyl formamide N-vinyl-pyrrolidone and N-vinyl-valerolactam.  Condensation polymers specified are polyesters, e.g. polyethylene terephthalate, polyoxymethylenes, polyacetals, polycarbonates, polyanhydrides and polyethers.  The high energy ionizing radiation used may be particle or electromagnetic radiation.  The examples describe the application of the process to polyester fabrics, the treated fabric having properties, e.g. dyeability and resistance to the accumulation of static charges, not possessed by the untreated fabric.  Specifications 578,079 and 845,897 are referred to.
Patent GB-963587-A (GB)
Title: A device for indicating marks and the like on a surface
IPC: G06K7/10
Filed: 1960-10-12
Abstract: 963,587. Photo-electric flaw-detecting apparatus. PHILIPS ELECTRICAL INDUSTRIES Ltd. Oct. 12, 1960 [Oct. 15, 1959], 34958/60. Heading G1A. An apparatus for detecting marks on a moving surface comprises a photo-cell for receiving light reflected from the surface, and a background having a reflection coefficient substantially different from that of the surface under test. The surface is scanned by a spot of light or by the photo-cell, and the photo-cell output is fed via a differentiating circuit to an indicating device which is rendered inoperative during the time that the scan - ning spot is moving from the background on to the surface and which responds only to pulses of polarity opposite to that of the pulse generated when the spot passes from the surface on to the background so that the edges of the surface do not cause the indicator to record marks. In the Figure light from a lamp 5 is directed by lenses 4, mounted in an opaque rotating drum 14, on to mirrors 3 so that two spots of light are formed on the test surface 1 or on the background 6. As the drum rotates, the spots scan across the surface, and the reflected light is detected by a photo-cell 7 whose output is differentiated and passed to an indicator 10. A rectifier unit 11 suppresses all pulses of one polarity. Slits 13 in the drum 14 allow light to pass to a second photo-cell 12, the arrangement being such that the cell output renders the indicator 10 inoperative when the light spot is passing from the background to the test surface. The size of the light spot may be varied to adjust the sensitivity of the apparatus. The positions of the lamp 5 and photo-cell 7 may be interchanged.
Patent GB-343155-A (GB)
Title: Improvements in or relating to ink ribbon feed and reversing mechanism for printing machines
IPC: B41J33/48
Filed: 1929-11-15
Abstract: 343,155. Ink-ribbon mechanism. HUBBARD, H. E., 90, West Van Buren Street, Chicago, and McCAIN, C. C., 734, Grand Avenue, Glen Ellyn, both in Illinois, U.S.A. Nov. 15, 1929, No. 34970. [Class 100 (iv).] Ribbon-feed mechanism comprising a pawl co-operating alternately with ratchet wheels in connection with the ribbon spools is associated with automatic reversing mechanism comprising a pivoted guide or tube containing a floating weight, preferably a mass of mercury, and provided with rollers or the like for engaging the ribbon on the spools, tilting of the guide causing the pawl to move from one ratchet wheel to the other. The mechanism shown in Fig. 1 is mounted as a unit on a support 5 and comprises spools 6, 7 having ratchet wheels 8, 9 co-operating alternately with a pawl 10 pivoted on a lever 12 which is connected by a link 23 to a lever 21 abutting on a reciprocating link 20. A spring 19 holds the pawl in engagement with either ratchet wheel. A rocking fork 16 for engaging a pin 14 on the pawl has fingers 18, 181 for engaging screws 32, 32<1> on a rocking member 26 carrying a tube 24 partly filled with mercury or other liquid. The member 26 is provided with pairs 28, 31 and 28<1>, 31<1> of rollers for engaging the coiled ribbon 32<11> on the spools, the rollers 31, 31<1> being carried by pivoted supports 30, 30<1> which are connected to springs 35, 35<1> and provided with adjusting-screws 33, 331. When the spool 6 is winding, the coiled ribbon thereon engages the rollers 28, 31 and the member 26 is rocked into the horizontal position. The mercury then flows along the tube and rapidly rocks the member until the rollers 28<1>, 31<1> are brought into contact with the coiled ribbon on the unwinding spool 7. After further unwinding, the member 26 causes the screw 32 to engage the finger 18 and rock the fork 16 and the pawl is thrown over to reverse the feed. The next reversal is effected in a similar manner, the member 26 being rocked to cause the screw 32<1> to engage the finger 18<1>. The screws 32, 32<1> may be so adjusted that they engage the fingers 18, 181 to effect reversal during the rapid rocking of the member by flow of mercury along the tube. Reverse movement of the winding-spool during retraction of the pawl is prevented by a detent 38, Fig. 2, formed with dogs 42, 43 and shoulders 421, 431 co-operating with ratchet wheels 37, 371 on the spool shafts 6<1>, 71. The detent has an enlarged aperture 39 engaging a pin 41 and is held down by a spring 46. When the spool 6 is winding, the dog 42 engages the ratchet wheel 37 to prevent reverse movement, and on reversal of the feed the spool 7 commences to wind, and the ratchet wheel 37<1> co-operates with the shoulder 431 to tilt the detent, the dog 43 being thereby brought into engagement with the ratchet wheel 37<1>. Stops 44, 45 limit the movements of the detent. To permit of manual operation of the shafts the detent is lifted. Specification 340,089 is referred to.
Patent GB-171628-A (GB)
Title: Improvements in and relating to means for suspending self centering spindles
IPC: B04B9/12
Filed: 1920-12-14
Abstract: 171,628. Aulich, W. M. Dec. 14, 1920. Self - aligning ball bearings for suspending centrifugal machines from stationary spindles 2. A flanged sleeve 4 is secured on the spindle 2 by a nut 3, and is provided with stationary race-rings 6, 6 for ball bearings T, R, the complementary rings 8, 9 of which are mounted in a casing 11 secured to the end of the machine shaft 10. The rings 8, 9 are provided with spherical concentric surfaces to enable the shaft 10 to swing, the axis of rotation of the bearings remaining unchanged. A driving- pulley 12 also forms part of the casing 11, and a cover 13 is provided to exclude dust.
Patent GB-862863-A (GB)
Title: Improvements in or relating to preparations for influencing the growth of plants
IPC: A01N37/48
Filed: 1958-11-03
Abstract: 2,6 diethyl benzonitrile (B.P. 111 DEG -114 DEG C. at 12 mm. Hg) may be prepared by conventional methods.  It may be used in plant growth controlling compositions (see Group VI).ALSO:A preparation for controlling the growth of plants is prepared by mixing or dissolving one or more compounds of formula <FORM:0862863/VI/1> in which Y represents a halogen atom, a C1-5 alkyl group (preferably methyl) or a nitro group, and X represents a halogen atom, a C1-5 alkyl group (preferably methyl) or a nitro group or Xn represents a plurality of such groups or atoms being the same as or different from one another, each individually linked to the benzene ring and n is 0-4 if both X and Y are halogen atoms, or n is 0, 1 or 2 if at least one alkyl group or at least one nitro group is linked to the benzene ring, with an inert solid or liquid carrier material, if desired with the addition of surface-active materials, dispersion agents and/or adhesives. Preferably the halogen is chlorine.  The preferred compounds contain substituents on both ortho-positions to the nitrile group such as 2-chloro-, 2-methyl-, 2-ethyl- and 2-nitrobenzonitrile; 2,6 - dichlorobenzonitrile; 2,6 - dimethyl- and 2,6 - diethyl - benzonitrile; 2,4,6-trichloro- and 2,4,5-trichlorobenzonitrile; 2 - chloro - 6 - methyl and 2,3,5,6 - tetrachlorobenzonitrile. Other active compounds include 2,4 - dichloro-, 2,5 - dichloro-, 2,4,5 - trichloro-, 2 - chloro - 5 - nitro- and 2 - methyl - 5 - nitrobenzonitrile.  The active ingredient may be compounded as (a) a wettable powder with a wetting agent such as a fatty alcohol sulphate or an alkyl aryl sulphonate or a dispersing agent such as lignin sulphonate and a carrier such as kaolin, chalk, pipe clay, magnesium marlstone or attapulgite; (b) a miscible oil earth 5-10% of ionic or non-ionic emulsifier and a solvent (benzene, toluene, xylene or other aromatic hydrocarbon mixed with ketones such as acetone or cyclohexanone); (c) a dust in which the active substance may be ground with a carrier such as a mixture of kieselguhr and magnesium marlstone and, if desired, a wetting agent; or (d) a solution in an organic solvent such as an aromatic hydrocarbon or an aliphatic or aromatic ketone or a mixture of them.  The preparations may be used for controlling the growth of both mono- and di-cetyledonous plants and the premature sprouting of tubers during storage.
Patent GB-429886-A (GB)
Title: Improvements in and relating to electric lamps
IPC: H01K1/66
Filed: 1934-12-07
Abstract: 429,886. Discharge apparatus. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. Dec. 7, 1934, No. 35215. Convention date, Dec. 8, 1933. Drawings to Specification. [Class 39 (i)] [See also Group XI] Electric lamps and vacuum and low pressure tubes containing a filament which is not employed as a light source are provided with a fuse which is located within the bulb and formed by an intermediate portion of a leading- in wire of smaller cross-section than the remainder thereof. The fuse wire is preferably surrounded by an insulating shield. The end portions of the leading-in wire within the bulb are preferably made of nickel, while the intermediate portion, which is of much smaller cross-section, consists of nickel or an alloy thereof of greater strength. The insulating shield surrounding the fuse preferably consists of a glass tube.
Patent GB-863526-A (GB)
Title: Improvements in or relating to dip painting apparatus
IPC: B05C3/02
Filed: 1959-10-19
Abstract: <PICT:0863526/III/1> A dip-painting apparatus comprises a dip-tank 10, for hot paint, having a reservoir 18 at one end thereof, into which, in operation, paint flows from the tank, and cooling means 30 in the reservoir at a level above that of the paint therein, but below the level of the paint in the tank.  The cooling means, consisting of water-cooled coils 32 extending through a series of fins 34, and adjustable vertically by means of cables entrained over pulleys, condenses solvent vapours from the hot paint and promotes a flow of solvent vapours from the tank into the reservoir.  The condensed solvent passes into a separating tank 59, where condensed water is removed through a pipe 62, and is returned to the paint in the reservoir through a pipe 63.  The paint is returned to the tank by a pump 26, through pipes 22 and 28, and a heat-exchanger 24. Additional cooling means 16 and 64 are provided above the paint level in the tank and near the end thereof over which the paint flows. Instead of the paint flowing over an adjustable weir, 21, as shown, the bulkhead at the end of the tank may be provided with an aperture communicating with an overflow pipe extending downwardly into the reservoir.  U.S.A. Specification 2,739,567 is referred to.
Patent GB-813492-A (GB)
Title: Improvements in or relating to vehicle bodies
Inventor: HILL ALAN CHARLES
IPC: B62D29/04
Filed: 1956-11-21
Abstract: 813,492. Vehicle roofs. PRESSED STEEL CO. Ltd. Dec. 12, 1957 [Nov. 21, 1956], No. 35543/56. Class 108(1) A transparent or translucent panel 10 forming the roof is provided with integral studs 14 which project through apertures in the metal bodywork 12, the panel being retained in position by spring clips 16. The fastenings are hidden by the lining material 17, and a resilient sealing compound 13 avoids breaks in the exterior surface.
Patent GB-1192688-A (GB)
Title: Improvements in or relating to Tube Furnaces
IPC: B01J8/06
Filed: 1968-07-26
Abstract: 1,192,688. Catalytic tube furnace. SOC. ANON. HEURTEY. 26 July, 1968 [26 July, 1967], No. 36589/68. Heading B1F. [Also in Division C5] A furnace for the catalytic steam reforming of hydrocarbons comprises parallel banks of vertical catalyst-containing tubes 5 with top burners 7 directing flames downwardly between the banks. Each tube is supported elastically, (at 18) at the top, and at the bottom is joined to submanifolds 12a, 12b resting on the hearth 11 of the furnace, each submanifold 12 being connected externally to a manifold 20a, 20b which is mounted at 25 for transverse movement, e.g. on rollers. The tubes are connected in pairs by members 17 attached to springs 18, and each tube is connected by a flexible pipe 14 to inlet header 15 and supply 16. The manifolds 20a, 20b have central risers 21a, 21b which may lead to a secondary reformer (22) through horizontal pipes which may be resiliently supported, see Figs. 10 and 11, (not shown). The tubes 5 pass freely through the roof 6 of the furnace, and through a box (24), see Fig. 7 (not shown) and are free to move axially, and the tubes of each bank may comprise two rows which may be staggered (Fig. 6). In a modification. Fig. 1 (not shown) each bank extends across the furnace, and has one submanifold and manifold only.
Patent GB-1121108-A (GB)
Title: Improvements in or relating to a press
IPC: B21D24/02
Filed: 1965-08-20
Abstract: 1,121,108. Stamping. AUGUST LAPPLE, G.m.b.H. & CO. 20 Aug., 1965 [20 Aug., 1964], No. 35766/65. Heading B3Q. In a press having a base 4, a reciprocable slide (not shown in Fig. 1), and co-operating die parts mounted on the base and slide, at least one of the die parts is supported resiliently by a pressure medium contained in a pressure bag 9 located within a chamber 7 formed in the base 4 or in the slide. A load transmitting member la and a pressure plate 1 are located between the bag 9 and bolts 2 connected to a tool or blankholder 3. The resilient bag 9 is supplied with gas or liquid under pressure. A guide beading 12 facilitates sliding motion of the plate 1. A plurality of resilient bags may be provided, acting on a single pressure plate (24), Fig. 5 (not shown).
Patent GB-1498570-A (GB)
Title: Viewfinder for camera capable of having two different objective focal lengths
IPC: G03B13/12
Filed: 1976-08-31
Abstract: 1498570 Camera viewfinders AGFAGEVAERT AG 31 Aug 1976 [30 Aug 1975] 35973/76 Heading G2A A view finder has two lenses 4, 5, one or the other of which can be pivoted into the viewfinder ray path to produce different fields of view. The viewfinder is intended for use with a cine or still camera having two objective lenses of different focal lengths which can be used alternatively, and a linkage connection is provided so that as one or the other of the objective lenses is moved into position, the corresponding lens in the viewfinder is also moved into position. Fig. 1 shows lens 4 in the operative position, a lug 4b on the lens cooperating with a stop 7a on the housing, urged by a spring 8, to locate it accurately, while lens 5 is positioned out of the view path. Lens 4 pivots on a shaft 6, and lens 5 pivots on a shaft 13, and the two lenses are linked by a triangular coupling plate 9. Plate 9 is linked by an L-shaped lever 11  to a slider 12 which can slide horizontally between two positions in which one or other of the two objective lenses (which may be a normal and a telephoto lens) is in operative position. The movement of the slider is transmitted via lever 11 to plate 9, which pivots so as to locate the lenses 4, 5 in the Fig. 1 position, or in the Fig. 3 position in which lens 5 is in the operative position and lens 4 is out of the ray path.
Patent GB-1109811-A (GB)
Title: Improvements in electric cable installations
Inventor: WATKINS ROLAND HOWARD WEIR
IPC: H01B7/29
Filed: 1965-08-24
Abstract: 1,109,811. Cooling electric cables. BRITISH INSULATED CALLENDER'S CABLES Ltd. 24 Aug., 1966 [24 Aug., 1965], No. 36322/65. Heading F4U. Successive lengths of a cable each have a cooling circuit in which oil is passed through the cable length or a duct associated therewith and through a return pipe for recirculation through the length, and a secondary cooling circuit common to a number of oil circuits withdraws heat from the latter. Fig. 2 shows a joint between adjacent lengths of cable, which lengths are hollow to allow the passage of cooling oil. Six cables are laid in a duct 3 and are joined by six joints 10 in such manner that oil cannot flow between adjacent lengths 11 and 12. The joints are all connected to two pumps 15 and 17 operating so that oil from the lengths 11 is passed through three return pipes 16 for recirculation through the lengths 11, and oil from the length 12 is passed through three return pipes 18 for recirculation. Fans 5 and 6 draw atmospheric air through a duct 9 for passage through the duct 3 in which heat is extracted from the oil return pipes. The air from the duct 9 serves a cable section comprising several cable lengths before being rejected to atmosphere. Other joints within the section comprise oil expansion tanks, oil pumps, and booster fans as appropriate, Figs. 3 and 4 (not shown). Oil to air heat exchangers may be provided at the joints, Fig. 5 (not shown). In another construction, Figs. 6-8 (not shown, heat is extracted from the oil circuits by water pipes laid in the duct 3, the water pipes serving several oil circuits and the water being cooled in air cooled heat exchangers external to the duct 3. In another construction. Figs. 9-12 (not shown), each cable length has two return pipes each laid within a cooling water pipe, water in these pipes flowing in opposite directions and the water circuit being completed by air cooled heat exchangers. In a further construction, Fig. 13 (not shown), the oil circuits of a number of consecutive cable lengths are connected in parallel to one heat exchanger, and a number of such heat exchangers are cooled by one water circuit. Preferred dimensions and operating conditions are disclosed.
Patent GB-958288-A (GB)
Title: Drawing press
IPC: B21D24/00
Filed: 1961-10-13
Abstract: 958,288. Cupping. L. SCHULER A.G. Oct. 13, 1961 [Oct. 22, 1960], No. 36802/61. Heading B3Q. A drawing press in which the driving crank or the driving eccentric is connected with the ram by a connecting rod and a further rod pivotally connected together to form a toggle joint, the hinge being deflectable by special drive means across the line connecting the crank and the ram for the purpose of modifying the simple harmonic motion generated by the crank by a supplementary motion is characterized in that a motion for the lateral deflection of the hinge differing from that which would be generated by guiding a rearward extension of the connecting rod beyond the crank along a circular path is impressed upon the toggle joint at a point located at a distance from the hinge which is less than twice the length of the connecting rod so that the latter forms a lever transmission amplifying said supplementary motion. In an embodiment one arm 4 of a toggle joint is pivoted at one end on the pin of the crank 2 of a crank-shaft 1 and at the other end 5 to the second arm 6 of the toggle joint which is attached to the ram 7, Fig. 1. Arm 4 is extended beyond its pivot 8 on the crank and pivotally attached to a link 13 the other end of which is articulated to the end of a two-armed lever 15, 16 working on a fixed fulcrum 17. The end 18 of the lever arm 16 is pivotally connected by a link 19 with the crank pin. The motion of the drawing ram can be varied by modifying the curve which defines the path of hinge 12. This curve can be varied by pivotally attaching link 19 to a different point on the crank or to a selected point on toggle arm 4 and its extension 9. A disc cam may be keyed to the crank-shaft for controlling the movement of the hinges 12 and 18. Link 19 may be driven by a separate crank 20 on the crank-shaft, Fig. 2. For driving a blank holder slide the two-armed lever 15, 16 is provided with a third lever arm 21 which is pivotally connected to a bell-crank lever 23, 24 by a link 22, Fig. 3. The arm 24 of the bell-crank lever is connected to a twoarmed lever 27, 28 by a link 26 and the arm 28 of the two armed lever is connected to the blank holder slide by a rod 29. This linkage ensures that the blank holder slide remains at rest from just before the drawing plunger contacts the blank until just after the plunger has been withdrawn. Fig. 4 shows a modification of the embodiment shown in Fig. 2 wherein at bottom dead centre of the ram levers 13 and 15 are fully extended. This ensures that the working pressure of the ram is taken up by the crank 12 in dead centre position and that at an earlier or later instant said pressure is transmitted to the fixed fulcrum 30 in virtue of levers 13 and 15 being relatively fully extended so that other members are relieved of this load.
Patent GB-998258-A (GB)
Title: Heating units for mixers and transporters for asphalt, bitumen, tar and similar products
Inventor: MAYNARD GEORGE HENRY
IPC: E01C19/08
Filed: 1960-10-26
Abstract: 998,258. Gas burners. BARTER & SONS Ltd. Oct. 26, 1961 [Oct. 26, 1960], No. 36807/60. Heading F4T. A gas-heating unit removably attachable to a mixer or transporter for asphalt &c. comprises a plate 1 on which are mounted a number of main burners 5 operating in parallel and a pilot burner 6 extending transversely adjacent thereto and arranged to ignite the burners 5 and remain alight throughout their operation. The pilot burner 6 is ignited by an auxiliary pilot burner 7 which is mounted on the plate 1 and is supplied with gas only so long as a valve 22 is manually held open and is ignited at the end 24a of slot 24 therein. The end 24a of the slot is on the " cool " side of the plate 1 outsid the mixer. The control means for the burners are mounted in a ventilated box 4 secured to an upper extension 3 of the plate 1. The gas supply is coupled to pipes in the box 4 at 13 and passes via a manually-operable emergency shut-off valve 16, Fig. 5 (not shown), to a filter 17 incorporating a pressure gauge 18. One branch pipe 2] supplies gas from the filter 17 to the manually-operated auxiliary pilot valve 22 while a second branch 19 supplies gas to a push-button controlled flame failure valve 20. The latter is coupled to a thermocouple 44 which provided a flame is detected at the pilot burner 6 keeps the valve 20 open. A first branch 33 from the valve 20 supplies gas to the pilot burner 6 via a manual shut-off valve 34 and a gas pressure regulator 36 while a second branch pipe supplies the main burners via a high temperature safety valve 28. The latter is controlled by expansion and contraction of oil in an adjustably mounted box 46 within the mixer. The ends of the pilot burner 6 and the auxiliary pilot burner are mounted in cooling boxes 40, 41 at each end of the plate 1, each base having a wire mesh cover which can only be slidably removed after the plate 1 has been removed from the mixer. The primary air intakes 26, 38 for the auxiliary pilot and pilot burners are adjustable. The main burners 5 comprises tubes supplied at their open ends exterior to the mixer with gas and air, which burns at slots 32 and their interior ends are coupled together by a strap 11. In an alternative embodiment the auxiliary pilot burner is replaced by a high-tension sparking arrangement.