baber/WOPTO huggingface dataset:
Patent GB-244832-A (GB)
Title: Improvements in the construction of rollers for sugar cane crushing mills
IPC: C13B10/06
Filed: 1924-09-25
Abstract: 244,832. Day, C., and Semple, D. M. Sept. 25, 1924. Rollers or cylinders. - A roller for a sugar-cane mill comprises a gudgeon or shaft and a shell into which the shaft fits, the shell being directly sealed and joined to the shaft by weld metal. The outer end of the shell 1 where it is in contact with the shaft 2 may be grooved and the groove filled with weld metal S by a process of electrical or oxy-acetylene welding, making a continuous joint between the shaft and the shell. Or the shaft mav be grooved; or the junction between the shell and the shaft may be welded without grooving.
Patent GB-994661-A (GB)
Title: Improvements in or relating to papermaking machines
IPC: D21F1/10
Filed: 1961-06-22
Abstract: 994,661. Wire-cloths of paper-making machines &c. KIMBERLY-CLARK CORPORATION. June 22,1961 [June 23, 1960], No. 22662/61. Heading D2A. An endless Fourdrinier wire-cloth of a papermaking machine is woven with a twill weave and the long knuckles of the warp wires 32 extend above adjacent portions of the wire-cloth on the paper-engaging side, the warp wires being in the cross-machine direction, thereby providing drainage openings in the wire-cloth which extend across the machine direction so that in draining, some of the fibres are drawn away from the machine direction so that felting is improved, giving greater cross-directional strength to paper thus formed. With the warp wires in the crossdirection, two or more seams may be necessary in the wire-cloth. The twill weave may have the warp wires extending over two, three, or more weft wires. The Specification also describes a Fourdrinier machine and its flow-box outlet.
Patent GB-1026802-A (GB)
Title: Improved process for the production of polyaldehydes
Inventor: WARREN CHARLES KENNETH
IPC: C08G2/28
Filed: 1962-06-13
Abstract: Saturated aldehydes are polymerized in the presence of an alkali metal catalyst, as defined below, at a temperature below that at which the catalyst also acts as a catalyst to degrade the polymeric product and after the polymerization is completed and before the reaction medium reaches a temperature at which substantial degradation of the polymeric aldehyde may occur, a weak acid is added to the reaction medium in an amount at least equivalent to the amount of catalyst present.  The alkali metal catalysts referred to above are the metals, the simple and complex metal hydrides and compounds in which the metal atom is linked to a hydrocarbon group, an oxyhydrocarbon group or a substituted derivative of such groups.  Of a number of catalysts listed sodium methoxide, sodium ethoxide, potassium t-butoxide and sodium cyclohexoxide are exemplified. Suitable aldehydes are aliphatic aldehydes, cycloaliphatic aldehydes, aromatic aldehydes and their substituted derivatives, preferably containing up to 10 carbon atoms.  Of the suitable organic and inorganic weak acids listed, n-butyric acid is exemplified.  The polymerization may be carried out in an organic solvent such as alkenes, alkanes or dialkyl ethers, pentane being exemplified.  The polymerization is preferably carried out at temperatures below - 60 DEG  C., and may be effected in an inert atmosphere, e.g. nitrogen, and at atmospheric pressure or at sub- or super-atmospheric pressures. Thermal instability of the formed polymers may be reduced by subsequently replacing their terminal hydroxyl groups with carboxylate groups and may, by thereafter subjecting to a heat treatment (as described in Specification 980,516) be further reduced.
Patent GB-621787-A (GB)
Title: Improved cylinder paper-making machine
IPC: D21F9/04
Filed: 1945-09-04
Abstract: 621,787. Cylinder paper-making machines. GOLDSMITH, P. H. Sept. 4, 1945, No. 22750. Convention date, Feb. 3. [Class 96] Suction in a forming-cylinder 41, Fig. 5, of a paper-making machine is applied to a submerged area, and to part of the cylinder ahead of the couch roll. The forming-cylinder 41 is made with obliquely-set longitudinal bars 231, Figs. 16 and 18, of stainless steel &c., received in slots 240 of end-ring parts 230, and strengthened by intermediate rings 249 of circular section, or alternatively of rectangular section and with slots entering slotted parts of the bars 231, which are notched to receive convolutions of a helically-wound rectangular wire support 250 for the backing and facing wire-cloth covers 251, 252 which are secured at 253 at the ends of the cylinder 41. The forming-cylinder 41 is driven by a geared shaft extending through it and meshing with gear-rings 246 on the inside of the end-rings 229 of the cylinder, rollers 262, Fig. 5, on the same shaft running against tracks 247, Fig. 16, adjacent the gear-rings 246 and of the same diameter as the pitch circle. Other shafts 268, 269, 270, Fig. 5, also extending through the cylinder carry similar gears and rollers. Garter straps 291 &c. bridge gaps between co-operating chime rings 289 on the vat sides and the rings 229 on the cylinder 41. The vat has a fixed outer circle 58, Fig. 5, and a flexible inner circle 62 about which pulp flows as indicated by arrows, and which is adjustable from the full-line to the chain-line positions illustrated, by means of racks 66 and gears 69 within an enclosure 63 at one end of the inner circle, and by racks 89, 95 and gears in frames 76 of a back-head 75 secured to the other end, the frames 76 having guide grooves 136 for a curtain plate 134 suspended from slotted supports 125 and constituting an overflow dam for pulp from the vat into a compartment 140 in which it is maintained at about the level l<SP>11</SP> and which has an outlet 141 and an adapter 142 at the lower end adjacent to curtain portions 117 hinged to the lower part of the back-head 75. At the ends of the forming cylinder 41 are white water compartments connected with the ends of a pipe 147 which has a discharge pipe 150 at the middle. A slice bar 359, Fig. 5, directs water along the edges of plates for sealing between the ring gears and roller tracks and other adjacent structures. A shower 362 is directed against the forming cylinder, and compressed air is applied at 357 through the forming cylinder just in advance of the couch roll 354. Specification 621,834 is referred to.
Patent GB-772710-A (GB)
Title: Plastic casing for centrifugal pumps
IPC: F04D29/42
Filed: 1955-08-09
Abstract: 772,710. Moulding pump casings from plastics. AMAG-HILPERT-PEGNITZHUTTE AKT.- GES. Aug. 9, 1955 [Aug. 11, 1954], No. 22982/55. Class 87(2). [Also in Group XXVI] The delivery passage of a centrifugal pump is formed during the moulding of the plastics casing by means of a removable core. The main part 10 of the pump casing is moulded from plastics material, the delivery passage being formed by a core 14 which is carried by a member 13 pivoted about the centre 12 of curvature of the arcuate centre line 11 of the delivery passage so that the core 14 can be swung out after the moulding operation.
Patent GB-813262-A (GB)
Title: Improvements in or relating to servo control system
IPC: G05D3/14
Filed: 1955-08-09
Abstract: 813,262. Electric correspondence control systems. SILVA, L. M. Aug. 9, 1955 [Aug. 16, 1954], No. 22905/55. Class 40 (1). In a process control system wherein an error signal is fed through a controller whose output, which is a continuous non-linear differential function of its input, is fed to a power system that is continuously variable between two predetermined limits, the elimination of the error signal is effected in three stages, firstly a period of application of maximum power in a direction reducing the error signal, secondly a period of application of maximum power in the opposite sense, and thirdly a period during which the applied power is proportional to the residual error signal. In an embodiment (Fig. 4) where the angular position of a shaft 54 is to be repeated by a second shaft 57, each is connected to the slider of a potentiometer across a battery 50, the difference voltage being fed through a linear computer 35 and a non-linear computer 36 instrumented in accordance with the time constants of the control system, the resultant signal being amplified at 80, 84 and taken to the control grids of a pair of thyratrons 87 supplying the excitation current for the split field windings 89 of a generator 90 of a Ward-Leonard system 91 controlling the rotations of the output shaft 57. The linear computer 35 produces an output voltage which is a linear differential function of the input voltage. The non-linear computer 36 contains thyrite elements 69, 70 whereby the output after amplification causes one thyratron 87 to fire to produce maximum speed of rotation of shaft 57 in one sense, then causes the other thyratron 87 to fire, producing maximum power in the other sense until the error voltage is reduced to zero. A further computer may be connected in parallel with 35, 36 to correct for incidental changes in the controlling element 54, and produces final proportional correction.
Patent GB-1430982-A (GB)
Title: Amplifier for use in communication systems
IPC: H01M6/10
Filed: 1973-05-15
Abstract: 1430982 Transistor amplifying circuits PLANTRONICS Inc 15 May 1973 [17 May 1972] 22965/73 Headings H4K H4R and H3T In an amplifier which is supplied with power over the signal output lines the signal is applied to the output amplifiers 18, 19, via signal processing means 12, 13, 14, which is supplied with power via a current steering network 17 which provides a constant polarity voltage to the processing means irrespective of the polarity of the supply on terminals 21, 22 and the output amplifiers 18, 19, are such that with one polarity of supply one amplifier is effective and with the other polarity of supply the other amplifier is effective. As described the current steering network comprises transistors 83, 84, 87, 88 connected in a bridge network with either the pair 83, 87, or the pair 84, 88, turned on by the respective power supply polarity which causes conduction through the emitter base junctions of the respective pair and the common resistor 86. Alternative current steering networks, using independent base circuit resistors, are described with respect to Figs. 6, 7, 8. The signal processing means comprises a variable attenuator circuit including resistors 44, 45, 48 and the emitter collector path of transistor 46 whose base is connected to a control circuit including transistor 109 which is turned on to provide the high attenuation condition or off to provide low attenuation of the attenuator, with a capacitor 107 on the base of transistor 109 to provide a "hold over" time constant. Conduction of transistor 109 is controlled by the differential amplifier circuit which is unbalanced at low preamplifier signal levels and gives the low gain condition, and is balanced when the signal exceeds a predetermined level to provide the high gain condition. Transistor 76 transfers the signal from the output of emitter follower 52 to the output amplifiers 95, 96, 97, 99 and the gain of transistor 76 is controlled by the output current to give a high gain at high output currents and a lower gain at lower output currents to provide, at the output terminals, a signal level characteristic with respect to line current which is similar to that provided by a carbon microphone. Selection of which output amplifier is enabled is provided by the rectifiers 93 and 94 in the output amplifier circuits.
Patent GB-1534021-A (GB)
Title: Grass cutting machine
IPC: A01D34/695
Filed: 1977-05-30
Abstract: 1534021 Mowers J E HINDMARCH and C HORNER 30 May 1977 [4 June 1976] 23073/76 Heading A1F A mower is supported on an air cushion formed by impelling air down a plurality of individual ducts to ports S.
Patent GB-371726-A (GB)
Title: Improvements in overhead ropeways
IPC: B66C21/00
Filed: 1931-08-17
Abstract: 371,726. Rope railways; stations; piling earth. WHITE, J. W. and VALBERG, C. O., Railway Engineering Works, Widnes, Lancashire. Aug. 17, 1931, No. 23103. [Classes 78 (iv) and 104 (ii).] An overhead ropeway conveyer for tipping earth over an extended area comprises a main run of supporting cable B, D or 3, 4, and a branch run J, H or 5, 6 at an angle to the main run, the points J, H being movable in a direction parallel to the cable B, D. The junction J may be supported by a carriage running on ground rails, and the cable J, H may be supported between its ends by frames 16, 17 on similar carriages. Guide rails 15 in the junction J connect the main to the branch cables. The haulage rope may proceed from the terminal station to the junction J, thence to the station H, and then back to J and the terminal station. In another form, the haulage rope runs from the terminal station through a T-junction to the station H, then back to the junction, then to the station D, and back to the terminal station through the T-junction.
Patent GB-275809-A (GB)
Title: A new and improved anti-dazzle device for motor car head lamps and the like
IPC: F21V11/16
Filed: 1926-09-20
Abstract: 275,809. Kelly, L. E. L. Sept. 20, 1926. Vehicle and like lamps. - In a vehicle or like lamp the beam reflected by the lower portion of the reflector is slightly coloured whilst the beam passing through the upper portion of the front glass or lens is diffused. In the form shown in the Figure, a ring A carries a coloured reflector B of conical, parabolic, or other shape to fit in front of the lower portion of the lamp reflector, and a screen C of celluloid or other material to fit behind the upper portion of the front glass or lens, a clip D being provided for clipping round the neck of an electric lamp bulb.
Patent GB-811743-A (GB)
Title: Improvements in or relating to combined lawn mowing and raking machines
IPC: A01D78/00
Filed: 1956-07-26
Abstract: 811,743. Side-delivery rakes ; lawn-mowers. VAN DER LELY, C. July 26, 1956 [July 26, 1955], No. 23157/56. Classes 6(2) and 6(3). A combined lawn-mower and side-delivery rake comprises a rake of the kind having rotary rake wheels rotated by their contact with the ground, connected to a hand-propelled, motor driven lawn-mower, the arrangement being such that while one strip of grass is mown, the side-delivery rake operates on the previously mown strip. The rake comprises freely rotatable rake wheels 90 supported from a beam 77 by spring steel arms 82, the beam 77 being connected by means of rods 75 and 76 to a shaft 71 journalled in an apertured bracket 73 carried by a bar 70 pivotally mounted at 68 and 69 to frame members 59 and 60 of the mower. The beam 77 also supports a baffle plate 77A for downwardly deflecting the mown grass thrown rearwardly by the mower.
Patent GB-506121-A (GB)
Title: Improvements in and relating to radial cylinder internal combustion engines
IPC: F01L1/42
Filed: 1938-08-05
Abstract: 506,121. Regulating. PORSCHE, F. Aug. 5, 1938, No. 23227. Convention date, Sept. 15, 1937. [Class 7 (vi)] In a radial-cylinder engine in which the cam drum is rotatably adjustable for varying the valve timing, a gear wheel 2 fixed on the crank shaft drives a gear wheel 5 loosely mounted on the crank shaft and secured to the cam drum 6, through intermediate gear wheels 3, 4, which are adjustable on the crank case so as to produce angular movement of the cam drum. The wheels 3, 4 are mounted on a carrier 7, which is formed as a worm wheel adjustable by means of a worm 11. In a modification, the wheel 4 is helical and adjusted axially.
Patent GB-823349-A (GB)
Title: Stabilisation of cracked naphtha
Inventor: RICHARD GEOFREY PERCY
IPC: C10G45/32
Filed: 1957-07-23
Abstract: The product from a steam cracking process boiling below 450 DEG  F is hydrogenated over a cobalt molybdate catalyst with 200-3500 SCF/B of hydrogen at 400-850 DEG  F. and a pressure of 100-800 p.s.i.g. and a feed rate of 0.5-16 vol/vol/hr.; gum forming diolefines and olefines are partially hydrogenated and sulphur and oxygen compounds as destroyed.  The process may be applied to a steam cracked product boiling in the range 86-392 DEG  F.  The hydrogen may be obtained from the steam cracking process or from a reforming process.  The product preferably has an ASTM breakdown time of above 120 minutes or an ultraviolet extinction coefficient at 235 mm  of below 0.95.  In a preferred embodiment a naphtha is separated into light and heavy constituents, the heavy naphtha is hydroformed and the light naphtha steam cracked and hydrogenated according to the invention using hydrogen from the hydroforming process and the two products blended.ALSO:The product from a steam-cracking process boiling below 450 DEG  F is hydrogenated over a cobalt molybdate catalyst with 200-3,500 SCF/B of hydrogen at 400-850 DEG  F. and a pressure of 100-800 p.s.i.g. and a feed rate of 0.5-16 vol./vol./hr.; gum-forming diolefines and olefines are partially hydrogenated and sulphur and oxygen compounds as destroyed.  The process may be applied to a steam-cracked product boiling in the range 86-392 DEG  F.  The hydrogen may be obtained from the steamcracking process or from a reforming process.  The product preferably has an ASTM breakdown time of about 120 minutes or an ultraviolet extinction coefficient at 235 mn  of below 0.95.  In a preferred embodiment a naphtha is separated into light and heavy constituents, the heavy naphtha is hydroformed and the light naphtha steam cracked and hydrogenated according to the invention using hydrogen from the hydroforming process and the two products blended.
Patent GB-1270648-A (GB)
Title: Releasable tube couplings
IPC: F16L37/00
Filed: 1970-05-14
Abstract: 1,270,648. Disconnectable pipe joints. SOC. LEGRIS FILS. 14 May, 1970 [23 May, 1969], No. 23325/70. Heading F2G. Locking members, e.g. arms 3a of clamping member 3, Fig. 1, are engaged with an inclined surface of a collar inserted in a socket 1, e.g. conical surface 2a, when a tube 4 is moved so as to remove it from the socket, thereby clamping the tube within the socket. As shown the socket has four concentric stepped bores 1a- 1d, the first containing the collar 2 bearing the inclined surface 2a, the second containing a sealing ring 5, and the last two locating the end of the tube 4. The clamping member 3 comprises a ring and a plurality of flexible, axially extending arms bearing teeth 3c at their ends. On insertion of tube 4 the teeth 3c lightly engage the pipe walls and the clamping member 3 slides axially within the collar 2. On attempted withdrawal of the pipe the ends 3a of the arms engage the surface 2a and are cammed inwardly causing the teeth to bite into and clamp the tube. To release the coupling the end 3 of the clamping member is pushed into the socket and the tube 4 withdrawn. The socket 1 may be of metal or plastics material, and the collar 2 may be screwed or pushed into bore la. In one form the collar 2 (Fig. 2) comprises cylindrical portions 8, 10, the latter being a forced fit in the socket, and a projection 11 may be provided. The collar 2, clamping member 3 and sealing ring 5 are assembled on a mandrel 13 (Fig. 6) and the collar is forced into the socket 7 by tool 19. Knife edges 20 may be provided on the tool to upset material from the socket to hold the collar, the mandrel being subsequently withdrawn prior to insertion of the tube 4, (the ends 15 of the mandrel being flexible to enable it to pass through member 3). A free fitting collar may be used, secured only by upsetting the socket material. The clamping member 3 may be of metal or metal coated plastics, or may alterntaively be of plastics material with metal insert strips (28a), (28b) (Figs. 18, 19) (not shown) embedded in it. In the latter case the ends of the strips (28a), (28b) are bent to form the teeth (29), (30) which engage the pipe 4.  The ends (33) of the clamping arms 3 (Fig. 20) (not shown) may be angled to contact the sealing ring 5 such that the ring 5 assists opening of the member 3 when releasing the tube (not shown). An auxiliary ring (42) (Fig. 22) (not shown) may have arms 43 extending between the clamp arms to prevent over-tightening of the joint resulting in damage to the pipe 4. Over-tightening may also be prevented by abutment of a ring (36) (Fig. 21) (not shown) against the internal end of the collar 2 to prevent further axial movement of the clamping member 3 due to displacement of ring 5 when the tube 4 is pressurized. The conical face of ring (36) also assists expansion of member 3 on release. Release of the clamping member 3 may be by axial movement of an external sleeve (48), (54), (Figs. 26, 27), (not shown) to engage that end of the clamping member 3 which extends from the socket.
Patent GB-1048393-A (GB)
Title: Photographic materials containing antistatic polymers
IPC: C08J7/046
Filed: 1963-06-12
Abstract: 1,048,393. Antistatic layers for photographic materials. EASTMAN KODAK CO. June 12, 1963 [June 12,1962], No.23402/63. Heading G2C. A photographic material comprises a support and a light-sensitive silver halide emulsion layer or a layer containing a silver image, and an antistatic layer containing at least 15% by weight of a water-soluble salt of a lactone of an interpolymer of an unsturated a:#-dicarboxylic acid and vinyl alcohol, a proportion of the carboxylic acid groups in the interpolymer not bonded in the lactone rings being in alcohol ester form and there being a proportion of carboxyl groups in salt form sufficient to confer water-solubility on the lactone. Water-soluble salts specified are, for example, those claimed in claim 3 of Specification 1, 013,179 and salts made from the partial hydrolysis products of the polymer described in Specification 537, 709. The antistatic layer may comprise the water-soluble salt alone or mixed with a hydrophilic colloid such as gelatin, and may be situated on the back of the support, e.g. over the antihalation layer, under or over the emulsion layer or between emulsion layers and may be applied to a subbed or unsubbed support from acetone, methanol or aqueous solution. The layer may be coated onto a material having a developed silver image e.g. by dipping, or the watersoluble salt may be incorporated into the silver halide emulsion layer so that this is also the antistatic layer. The antistatic layer may also contain titanium dioxide, anti-curl substances or antihalation dyes. The antistatic layer may be water-soluble so that it is removed during processing or it may be rendered insoluble by incorporating a hardener such as triethylenemelamine, tris (1-(2<SP>1</SP>- methylaziridinyl))-phosphine oxide, hexa (1-(2<SP>1</SP>- methylaziridinyl))-triphosphatriazine, ethylene bis (N, N-(1:2-propylene)-urethane), hexamethylene 1, 6-bis (3, 3-ethylene urea), mesitylene-2, 4, 6-tris (3, 3-ethylene urea), butane-1, 4-diol bis(glycidyl ether), vinylcyclohexene dioxide, resorcinol diglycidyl ether, bis(2, 3-epoxypropyl) propylamine and bis(2, 3-epoxypropyl) ethylmethyl-ammonium-ptoluene sulphonate.
Patent GB-1449089-A (GB)
Title: Injection tube in a medical liquid or blood transfusion line or  circuit
IPC: A61M39/04
Filed: 1974-05-24
Abstract: 1449089 Injection tube EIKEN KIZAI CO Ltd 24 May 1974 23408/74 Heading A5R A resilient injection tube 2 in an artificial kidney circuit or medical liquid transfusion line or blood transfusion line, the circuit or line including two sections 1 which are connected end to end by the injection tube, which fits over the adjacent ends of the two sections, the sections being spaced apart within the injection tube, a part of the tube wall having a shield 3 which is incapable of being pierced by an injection needle (4) inserted through another part of the tube wall. If needle (4) is driven too strongly through the wall, for injecting liquid medicine into blood or liquid flowing through tube 2, the shield 3 prevents the needle piercing the operator. The metal shield may be fixed or detachably secured to the outer periphery of the rubber wall or embedded in it.