baber/WOPTO huggingface dataset:
Patent GB-1078731-A (GB)
Title: Electrophotography
IPC: G03G5/147
Filed: 1964-08-04
Abstract: 1,078,731. Electrophotography. RADIO CORPORATION OF AMERICA. Aug. 4, 1964 [Aug. 28, 1963], No. 30864/64. Heading H1K. [Also in Division G2] An electrophotographic element comprises a layer of organic resinous material, at least one colourless dye intermediate dissolved in said layer which on exposure to actinic radiations reacts with the resinous material to form a dye and at least trace amounts of said dye distributed through said layer in discrete areas in the form of a uniform geometric pattern. The layer has a dark resistivity of 10<SP>9</SP> ohm. cm. and a resistivity in the discrete areas when irradiated of 10<SP>2</SP> ohm. cm., less. The geometric pattern may be a half-tone screen plate having a configuration of lines or dots. The resinous material may be chlorinated paraffins, polyvinylidene chloride and copolymers thereof or copolymers of vinyl chloride. Other resinous materials may be polymers or copolymers of styrene, butadiene and acrylates and also epoxy or terpene resins, these being used in conjunction with the chlorine containing materials or with a non-volatile halogenated organic compound, e.g. tris-(2,3-dibromopropyl) phosphate. The dye intermediate may be a leuco base of a triphenyl methane dye; suitable bases are listed. The element may be a self-supporting film or a substrate, e.g. paper, aluminium metal or glass, coated with the photo-conductive insulating material, whilst both the substrate and the photo-conductor may be transparent. Conventional plasticizers may be included in the film to enhance flexibility whilst an antioxidant, e.g. an organo-tin compound, may be used to stabilize the dye intermediate. The pattern on the element is made by exposing it to an actinic radiation pattern of discrete light and dark areas to give the geometric pattern, the element then being exposed and developed in the normal manner. A resinous overcoating may be applied to the photoconductive layer.
Patent GB-1176543-A (GB)
Title: Improvements in and relating to Microwave Power Adder Circuits
Inventor: O'BRIEN LAWRENCE HUNT
IPC: H01P5/16
Filed: 1967-07-05
Abstract: 1,176,543. Aerials; pulse radar. HUGHES AIRCRAFT CO. 5 July, 1967 [1 Aug., 1966], No. 30885/67. Headings H4A and H4D. In a microwave signal adding arrangement the outputs of transmitters 24, 25 are combined by hybrid junctions (magic T's) 13, 14, 15, 16 to form signals applied to circulators 17, 18 and thence after division by hybrid junctions 19, 20 to an aerial 23. As applied to a monopulse radar further hybrid junctions 21, 22 are added. The invention avoids the exceeding of peak power limits in waveguides.
Patent GB-791043-A (GB)
Title: Improvements in apparatus for measuring leaks
Inventor: MENNESSON ROBERT
IPC: B65D90/50
Filed: 1955-10-28
Abstract: 791,043. Leak measuring apparatus. SOC. D'APPLICATIONS ET DE CONSTRUCTIONS POUR MATERIEL AUTOMOBILE S.A.C.M.A. Oct. 28, 1955 [Oct. 30, 1954; May 17,1955], No. 30925/55. Class 106 (2). A leak measuring apparatus consists of a source 64 of fluid under pressure supplied through a valve 69 and connected to the chamber 61 under test by conduit 62 which contains two valves 7, 44 in series, the valve 7 being connected to the source 64 and also providing a by-pass valve for a liquid indicator column 39 with a scale 70, and means for automatically closing valve 44 a predetermined time interval after the closing of the by-pass valve 7. In one embodiment the valves 7, 44, 69 comprise slide-valve mechanism, consisting of a casing 71, containing channels 74 ... 77 connected to conduit 62, U-tube 67, reservoir 64 and conduit 68 respectively, in which slides part 72 in having a groove 82 to co-operate with the channels 74 ... 77. Conduit 68 is connected to a fluid supply to replenish reservoir 64. As part 72 moves from left to right, valves 77, 76, 75 corresponding to valves 69, 7, 44 (Fig. 1) are closed in that order, the movement being controlled and timed by a dash-pot 87 actuated by a spring 90. A push-piece 98 restores the parts to initial position for the next operation. In another construction the valves 7 and 69 are mounted on a rod reciprocated by a cam which also starts time delay mechanism to close a diaphragm valve 44.
Patent GB-306187-A (GB)
Title: Improvements in valves for controlling the flow of gases and the like
IPC: F16K3/20
Filed: 1927-11-18
Abstract: 306,187. Clapham, T. A., and Auty, A. B. Nov. 18, 1927. Sliding valves; materials, special.-A valve plate b of vitreous material with a chamfered lower edge b' is used in combination with hollow indiarubber &c. seating rings d, d<1> filled with liquid or gas through non-return valves k<1>, the ring d<1> being formed in the same manner as the ring d though not so shown. The rings may contain lubricating or greasy oil which may emerge to the valve faces through annular slots h. The valve plate may be operated through a screwed rod m and handwheel. The Provisional Specification describes also seating rings of any suitable material which may be resilient or pressed against the valve plate by spring action.
Patent GB-812925-A (GB)
Title: An optical projection apparatus with picture changer for the progressive projection of lantern slides
Inventor: JOST JOHANNES
IPC: G03B23/04
Filed: 1955-10-31
Abstract: 812,925. Optical-projection apparatus. AGFA, A. G. Oct. 31, 1955, No. 31093/55. Class 97(1) A vertically movable member carries jaws at its lower end for gripping a slide and lifting it, from a magazine below the optical system, into projecting position and subsequently replacing it, each downward movement causing the magazine to move forward one step so that the next slide is lifted on the next stroke. In the form shown a housing 6 contains a plate 7 operated by a knob 8 and having pivoted at 9, jaws 10 urged together by a spring 11 and of V-section at their lower inner edges so as to grip the edges of a slide in the magazine 3. The slide is raised to projecting position at the aperture 6c by lifting the knob 8. As it is subsequently lowered rollers 12 pivoted on the jaws 10 strike cams 13 to open the jaws to release the slide and permit movement of the magazine. This movement is produced by one on the spindle 15 of a pinion 14 enried o nthe spindle 15 of a pinion 14 engaging a rack on the side of the magazine. The knob 16 is urged upwardly by a spring 17 and connected to the spindle 15 by a pin and helical slot so that axial movement of the knob produces relative rotation of knob and spindle. A spring pawl 20 bears on ratchet teeth on the knob and a spring pawl 19 bears on pinion 14. The pawls are arranged so that pinion rotates to move the magazine forward as the knob is depressed, whereas, when the knob is released, it rotates, leaving the pinion stationary. When the magazine is inserted initially its movement is stopped at a position for projecting the first slide, by a spring urged lever 22 in its path. This lever is moved aside by one of the jaws 10 during the first downward stroke of the plate 7 and subsequently bears on the side of the magazine. Since the slides are removed from the top of the magazine no slots are required in the magazine and a detachable cover for the magazine encloses the slides completely. A spring detent 6e locates the plate 7 in the projection position. The plate may be spring biased towards one end of its travel. Downward movement of a plate 7 lowers a shutter 24 over the aperture 6c while the slides are changed.
Patent GB-187868-A (GB)
Title: Improvements in tea and like kettles
IPC: A47J27/21
Filed: 1921-11-22
Abstract: 187,868. Finkelstone, H. Nov. 22, 1921. Kettles. - An eccentrically - disposed filling opening b is closed by a cover g carried by the pivoted handle, d. when the latter is in the normal position. A stop h is provided.
Patent GB-485115-A (GB)
Title: Improvements in the manufacture of polyvinyl chloride polymerisates
IPC: C08L27/24
Filed: 1936-11-16
Abstract: Chlorinated polyvinyl chloride is worked up by strongly cooling a solution thereof in an organic solvent to form a gel andprecipitating by a non-solvent.  A solution of chlorinated polyvinyl chloride, e.g. of 10 per cent strength in tetrachlorethane, may be gelled by cooling to 0-40 DEG  C. and a non-solvent, e.g. methanol or other lower aliphatic alcohol or aliphatic hydrocarbons such as petroleum ether or gasoline, added with stirring.  Alternatively, a gel obtained in the same way may be extruded, e.g. as a band or fibre, into the preferably pre-cooled non-solvent, which may move in countercurrent or may be situate in more than one bath.  Specification 401,200 is referred to.
Patent GB-1168160-A (GB)
Title: A Synthetic Slag Forming Composition for the Casting of Steel Ingots
Inventor: SMRHA LUBOMIR
Filed: 1967-07-07
Abstract: 1,168,160. Refractory composition for coating ingot moulds. VITKOVICKE ZELEZARNY KLEMENTA GOTTWALDA, NARODNI PODNIK. 7 July, 1967, No. 31344/67. Heading C3N. [Also in Division C1]] A synthetic slag forming composition consists of 40-95% blast furnace or other metallurgical slag, and 60-5% of an inorganic carbon-free siliceous material having high insulating properties e.g. vermiculite, perlite, keramsite, diatomaceous earth, and 0À20% of an alkali metal flux.
Patent GB-1395464-A (GB)
Title: Twin sheet thermoformer
IPC: B29C51/18
Filed: 1973-07-02
Abstract: 1395464 Sheet forming KOEHRING CO 2 July 1973 [3 July 1972] 31418/73 Heading B5A An apparatus for forming hollow articles from sheets of thermoplastics material, e.g. articles made from pairs of sheets of different thicknesses comprises a forming station 10 with heating stations 12, 12a each side, upper and lower carriages 30, 32, and 34, 36, respectively, to support the sheets, chains 64, 64a connecting the carriages so that they can be moved, e.g. by a fluid cylinder 80, in a to-and-fro path between a first position where one of the upper sheets is aligned with one of the lower sheets in the moulding station 10, whilst the other sheets are heated respectively by upper and lower heaters 22, 28 or 22a, 28a, to a second position where the other sheets are moved into the station 10 whilst new sheets are being heated, the station 10 having upper and lower platens 86 to shape and fuse the sheets together, and the apparatus further including timer controls for operating the heaters 22, 28, 22a, 28a at variable time durations.
Patent GB-365194-A (GB)
Title: Improvements in or relating to the reproduction on a reduced scale of the voltage ofa high voltage a.c. system
IPC: G01R15/06
Filed: 1930-10-21
Abstract: 365,194. Protective cut-out arrangements. REYROLLE & CO., Ltd., A., Hebburn-on-Tyne, and LEBEN, H., 8, Queen's Walk, Harrow, Middlesex. Oct. 21, 1930, No. 31501. [Class 38 (v).] An arrangement for reproducing on a reduced scale the voltage of an A.C. system, for metering or protection purposes, comprises an arrangement of coupling condensers B, C, of which B is three times (say) the capacity of C, and a circuit F, G tuned to the frequency of the system and fed from a potential transformer D, E, the burden L being supplied through a transformer H, J with a voltage derived from part of the tuned circuit and also with a compensating voltage derived from a tertiary winding M on the transformer D, E. The latter voltage may be fed to the primary (as shown) or to the secondary of the transformer H, J, but in the latter case the magnetizing current of the transformer H, J will not be compensated for. In a modification, Fig. 2 (not shown), the compensating voltage is obtained from a transformer energized by the voltage across the tuned circuit F, G. Three arrangements can be fitted to the respective lines of a three-phase system, the secondaries J being connected to earth at one side and to respective sub-busbars at the other, Fig. 3 (not shown). The arrangement provides a relatively large output to the burden and is proof against high-frequency surges. A relay N is arranged to short-circuit the winding M and prevent damage to the transformer D, E due to excessive rise of voltage. Specification 354,236 is referred to.
Patent GB-253810-A (GB)
Title: Improvements in shoe racks
IPC: A47B61/04
Filed: 1925-12-14
Abstract: 253,810. Gilfillan, W. W. Dec. 14, 1925. Rack stands; racks for light articles. - A boot &c. rack comprises a. pair of end frames, which may be adapted for attachment to a wall &c. or for standing on the floor, connected by pairs of cross rods 16 of substantially rectangular cross-section but with the top face 18 at an acute angle with the front face 17 so as to fit closely into the angle formed by the heel and instep of the boot &c. The rods 16 are interchangeable, their ends being fitted into slots in the end frames. The rods at the rear of the rack are arranged at a greater angle to the horizontal than the front rods. For supporting heelless boots &c. a support may be provided comprising a length of doubled wire bent between its ends at 21 to clip on to a lower rod 16, the rear extensions 23 engaging under the corresponding upper rod 16 and its front end bent upwardly at 20 to support the toe of the boot &c. The rack may be provided with a roller &c. curtain or glass front to form a show-case.
Patent GB-1393598-A (GB)
Title: Method of making cylindrical bladed r'ors for blowers
IPC: B21D53/78
Filed: 1972-07-06
Abstract: 1393598 Making an impeller INTERNATIONAL STANDARD ELECTRIC CORP 6 July 1972 [14 July 1971] 31675/72 Heading B3A [Also in Division F1] A method of making an impeller for a crossflow blower comprises making longitudinal cuts in a cup of a light-weight metal to form parallel strips, and bending into the cup one edge of each of the strips to form blades 2, the ends of the blades adjacent the base of the cup being connected across their entire width with the base and being plastically deformed. A light metal extruded cup blank is cut and bent to form the blades in one end portion of the cup. An annular stiffening element 4 is then inserted in the cup so that it is supported by the previously formed blade ends. The blades in the remaining portion of the cup are formed so that the element 4 is supported between the blade ends. The cup may be of such a length that more than one element is required.
Patent GB-1112650-A (GB)
Title: Apparatus for the automatic transfer of carriers or pallets
Inventor: PESCHEL ARNO
IPC: B65G49/08
Filed: 1966-07-15
Abstract: 1,112,650. Loading bays; conveyers. KEMA KERAMIKMASCHINEN GÍRLITZ VEB. 15 July, 1966, No. 31922/66. Headings B8A and B8E. Carriers or pallets (which may support bricks) to be transferred from a conveyer to a truck or vice versa are first transferred to a structure which includes, on both inner sides, supports 4, 5, 18 for the carriers (not shown). Supports 5 are mounted on frame units 6, 7; 10, 11, respectively, and are movable horizontally by an hydraulic motor (15), Figs. 2, 4 (not shown). Supports 18 are carried by frame members 19 which, by means of hydraulically actuated crank mechanisms (22-33), Figs. 2, 3 (not shown), are given a cyclic horizontal and vertical motion. Supports 4 are fixed. In a truck loading operation, when a batch of carriers has been raised by a conveyer (1), Fig. 2 (not shown), the supports 18 move under the carriers and deposit them on the fixed supports 4. When the conveyer has raised a further batch of carriers the supports 18 deposit the first batch on the supports 5 and deposit the further batch on the fixed supports 4. This cycle is repeated until a number of batches of carriers are on the supports 5. A truck provided with supports approximately at the same height as the supports 5 is driven into the structure after the supports 5 have been moved outwardly and the supports 18 raised. The latter are then lowered, the carriers are deposited on the truck supports and the loaded truck driven away. If trucks having load-engaging members more towards the centre of the trucks are used, the supports 5 do not need to be moved outwardly. When unloading, carriers in a truck are positioned over the lowered supports 18, the latter are raised, the truck is driven away and the supports 5 are moved inwards under the carriers. These are then moved step-wise by the support 18 towards the conveyer (1).
Patent GB-725128-A (GB)
Title: Improvements in or relating to coil winding apparatus
Inventor: BUGG KENLY COLEMAN
IPC: H02K15/085
Filed: 1953-11-19
Abstract: 725,128. Stator winding machines. KENDICK MANUFACTURING CO., Inc. Nov. 19, 1953, No. 32156/53. Class 35. Wire is introduced into stator slots by a continuous chain, both sides of which pass through the stator bore. As shown in Fig. 1, motion of the chain 54 draws wire passed through one of its links along a slot in stator 77 over hooks 60, 61 at one end, along the return slot and over hooks 64, 65 at the other end. When the requisite number of turns has been wound, using an automatic counter if required, the wire is removed from the four hooks and pressed into the form it is to occupy as end turns, and the stator is adjusted for the winding of the next pair of slots. In the modification shown in Figs. 10 and 11, the chain and its sprockets, instead of being supported from the machine frame, are supported by the stator 117 itself (shown rather narrow) by means of members 125, 127 readily adjustable after the completion of the winding of each pair of slots. In this form the end turns are located between the stator ends and the shoulders 138, 140 on members 125, 127 and hooks are not required.
Patent GB-321855-A (GB)
Abstract: 321,855. Brunsviga-Maschinenwerke Grimme, Natalis, & Co. Akt.-Ges., and Hoffmeister, H. Dec. 6, 1928. Operating by motors.-The drive for a calculating-machine is controlled by a rotated member carrying a number of elements such as depressible pins the selected one of which terminates the drive after a predetermined number of revolutions of the main shaft of the machine. The motor 3 drives the main shaft 1 through gears 4, 5 and a clutch 7, 8 the connecting pawl 9 of which is controlled by a number of spring-pins 13, 13<a> - - 13' (Fig. 6) mounted in a disc 12 driven from the gear 10 in a 10 : 1 ratio. The pins may be selectively set by hand or as shown by flexible connection with two banks of keys 26, 27. If five rotations of the shaft 1 are desired, key 5 is depressed to protrude pin 13<e>. At the same time a detent disc 14 releases the previously set pin 13 and now retains the pin 13e protruded. The lengthwise movement of this pin also forces a non-rotatable disc 21 to the right to close circuit 25 for the motor. The circuit however is not complete until the depressed key is allowed to return as otherwise a detent bar 45, Fig. 3, in its displacement by the key keeps a switch 40 at " " open." The motor circuit being closed, the disc 12 rotates through half a. revolution, equivalent to five rotations of the shaft 1, so that the pin 13e reaching the lowest position, Fig. 6, uncouples the pawl 9. At the same time a notch 24 in the disc 21 permits movement of the disc to the left to open the circuit. If continuous drive of the machine is required a key 28 is depressed to advance a pivoted flap member 52, situated at position 13<a>, Fig. 6, so that each pin in succession is set to prevent return of disc 21 and the uncoupling of the clutch pawl. To effect reverse drive, a change-over switch 35, Fig. 3, in the motor circuit is under the control of the detent bars 45, 46 of the banks of keys so that for example when a negative key 27 is depressed the corresponding bar 46, through an arm 49 swings the switch through 90‹ to reverse the current through the armature. A similar arm 48 extending from the bar 45 returns the switch for positive operations. Two continuous drive keys may be provided each controlling a member 52 positioned at 13a and 13<i> respectively and operating the change-over switch for positive and negative drives.
Patent GB-1158622-A (GB)
Title: Device for the Continuous Polymerisation of Lactams
Inventor: MARKEL KURT
IPC: C08G69/16
Filed: 1966-07-18
Abstract: 1,158,622. Polymerisation apparatus. CHEMIEFASERWERK SCHWARZA "WILHELM PIECK" VEB. 18 July, 1966, No. 32205/66. Heading B1X. [Also in Division C3] Apparatus for continuous melt polymerisation reactions comprises a straight vertical tubular reactor comprising superimposed jacketed tube sections 1, 2. 3 which also have transversely arranged internal heating means, an inlet to the uppermost tube section, degasification zone 4 with means 7 for controlling the flow of melt, a vertical pipe system 5 including central pipe 9, and sump cone 6 comprising flow direction means 10 and exit nozzle 11. Flow control means 7 can comprise a body vertically displaceable in an annular gap concentric with the reactor; evolved gases leave at 8. The flow direction means 10 can comprise a plurality of hollow concentric frustoconicai members and a central solid body 14.
Patent GB-173725-A (GB)
Title: Improvements in and connected with rotary valves for use with centrifugal apparatus for separating solid particles from air
IPC: B01D45/14
Filed: 1920-09-02
Abstract: 173,725. Robinson & Son, Ltd., T., and Robinson, C. J. Sept. 2,1920. Density separators; discharging.- A machine for separating solid particles from air has a rotary valve apparatus for discharging the solid materials from the separating-chamber, and the valve is provided with cleaning-means acting upon the tips of its blades. The blades 1, which may be of wood, are secured between discs on a shaft 5. The segmental parts 3 of the valve casing extend between the boards 9, 10 of the inlet and outlet respectively. A rotary brush 12 forms the cleaning-device and is housed in a box 14 with a door 15. As the blades revolve with the shaft 5 the solids are discharged through the outlet 8 and the brush removes any matter adhering to the blades so that the device acts as a seal and prevents air from entering the separator.
Patent GB-1393348-A (GB)
Title: Trifluoromethylmercaptoacetamidocephalosporins
IPC: A61K31/546
Filed: 1973-07-06
Abstract: 1393348 Trifluoromethylmercaptoacetamidocephalosporins SMITHKLINE CORP 6 July 1973 [20 July 1972] 32261/73 Heading C2C Novel trifluoromethylmercaptoacetamidocephalosporins of the formula in which A is hydrogen, acetoxy, pyridinium, methoxy, methylthio or S-Het; Het is a 5 or 6 membered heterocyclic ring containing 1-4 hetero atoms selected from N, O and S and being unsubstituted or substituted with one or two groups selected from C 1-4  alkyl, C 1-4  alkoxy, C 1-4  alkylthio, C 3-4  cycloalkyl, halogen, hydroxy, allyl, methoxymethyl, mercapto, trifluoromethyl and NR 2 ; and R is hydrogen or C 1-6  alkyl, and pharmaceutically acceptable salts thereof, are prepared by acylation of the appropriate 7- aminocephalosporin with trifluoromethylmercaptoacetic acid. Trifluoromethylmercaptoacetic acid is prepared by treating iodoacetic acid with silver trifluoromethyl-mercaptan. N-Hydroxysuccinimidyl trifluoromethylmercaptoacetate is prepared by reacting trifluoromethylmercaptoacetic acid with N-hydroxysuccinimide. The 2,4-dinitrophenyl ester is similarly prepared. Pharmaceutical compositions having antibacterial activity comprise the above cephalosporins and a pharmaceutically acceptable carrier.