baber/WOPTO huggingface dataset:
Patent GB-1378793-A (GB)
Title: Extruder
IPC: B29C48/76
Filed: 1972-02-09
Abstract: 1378793 Extruder screw SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NV 9 Feb 1972 6059/72 Heading B5A Gas is fed to or from a polymer melt through a passage 13 in an extruder screw 3 which has a flow barrier 14 between two adjacent turns of the flight 18, the leading turn of which has a gap 15 adjacent the flow barrier so that the melt flows through the gap and has a large surface area exposed to the gas in the pocket behind the flow barrier 14. The arrangement may be repeated to increase gas transfer. Gases evolved from the melt may be removed by vacuum or pressurized nitrogen from a gas cylinder fed into a P.V.C. melt to form a foamed tube.
Patent GB-111279-A (GB)
Title: An Improved Process for Obtaining Cylinders or Rollers for use in Printing Newspapers, Reviews and the like.
IPC: B41C1/06
Filed: 1917-04-30
Abstract: 111,279. Soc. Anon. La Photogravure Rotative, and Soc. Thenard Simon et Cie. Nov. 11, 1916, [Convention date]. Ink-ribbons.-An ink ribbon for a typewriter used for printing transfers for making printing- surfaces is prepared with a special transfer ink composed of yellow wax, mutton tallow, resin soap, gum lac and lamp black, preferably in the proportion of 3 parts by weight each of the wax and tallow, 10 parts of soap, 4 parts of gum lac and 3 parts of lamp black.
Patent GB-1326879-A (GB)
Title: Liquid ring pump lobe purge
IPC: F04D29/70
Filed: 1972-02-09
Abstract: 1326879 Liquid-ring pumps NASH ENG CO 9 Feb 1972 [3 March 1971] 6121/72 Heading F1C A conduit 70 opens at 68 to the interior of the casing of a liquid-ring pump at a region, e.g. 240 degrees in the direction of rotation from the land 66 at which liquid or solid contaminants concentrate in the liquid ring, a portion of the ring liquid and a substantial part of the contaminants being purged from the interior of the casing through the conduit. The conduit may be disposed substantially radially or substantially tangentially of the casing. The removed liquid, the amount of which can be regulated by means of an orifice or by selection of conduit size, is directed into a drain or into the pump discharge. Two openings 68 and conduits 70 may be provided, one adjacent each end shroud of the pump impeller. Apurge passage (68'''), Figs. 7 and 8 (not shown) may be machined in an end wall of the pump casing and located to discharge into a discharge passage 58.
Patent GB-1524644-A (GB)
Title: Process for preheating and preparing ferous metal for galvanizing
IPC: C23C2/02
Filed: 1977-02-15
Abstract: 1524644 Fluxing for hot-dip galvanizing INTERNATIONAL LEAD ZINC RESEARCH ORGANIZATION Inc 15 Feb 1977 [5 March 1976] 06218/77 Headings C7F and C7M Prior to galvanizing, a ferrous object is immersed in a bath of molten salt and/or hydroxide such that the object is fluxed and pre-heated to at least the melting temperature of the salt bath, and preferably at least to 100C below the temperature of the Zn bath, e.g. to about the temperature of the Zn bath. The bath may consist of NaOH or the following mixtures: 55-77% ZnCO 2 , remainder KCl, 49- 59% KCl, remainder LiCl; 75-95% PbCl 2  remainder KCl, 90-95% PbCl 2 , remainder NaCl.
Patent GB-535515-A (GB)
Title: Restricted differential gears
Filed: 1940-04-06
Abstract: 535,515. Differential gearing. IFIELD, R. J. April 6, 1940, No. 6236. Addition to 471,325. [Class 80 (ii)] Consists in modified methods of driving the " additional" or restricting elements of the restricted differential gear described in the parent Specification, in which one-way locking-devices for limiting the differential ratio are disposed adjacent to one another. In one arrangement the restricting-elements D, E, Fig. 2, are on concentric shafts 11, 12, which are disposed within one A of the driven elements. The shafts 11, 12 carry gears 21, 22, which mesh with compound planet-gears 23, 24 carried on the driving element C. The gears 23, 24, which are shown apart from each other in Fig. 2, mesh with gears on the driven elements A, B respectively, and with one another. The method may be applied to bevel-gearing. In another form, one restricting-element E, Fig. 3, has two gears 28, 29 of different sizes, one 28 of which meshes through a planet-gear 31 with internal teeth on the driving-member C, whist the other meshes through a planet-gear 32 with internal teeth on the driven element B. The gear 32 also meshes through another planet-gear 33 with the other restricting- element D. The three planet-gears are carried by the other driven element A. In a third form one restricting-element is formed with a sungear and the other as a planet-carrier having a compound planet-wheel, which meshes with the other restricting-element and also interconnects the driving and both driven members. Specification 507,534 is referred to.
Patent GB-766972-A (GB)
Title: Improvements in or relating to absorption refrigerating apparatus
IPC: F25B37/00
Filed: 1955-03-03
Abstract: 766,972. Refrigerating.ELECTROLUX, Ltd. March 3, 1955 [March 24, 1954], No. 6267/55. Class 29. Relates to continuous cycle absorption refrigerating systems of the inert gas type in which during adverse conditions such as high ambient temperature, refrigerant is stored in an accumulating vessel so as to reduce the concentration of refrigerant in the circulating solution thus increasing the efficiency of absorption, the stored refrigerant being returned to the circulating solution when such conditions terminate. According to the invention the restoration is effected by supplying a quantity of solution to the accumulating vessel when the solution pump is stopped by e.g. the thermal control, and then when the pump is restarted, withdrawing a substantially equal quantity of solution from the vessel and returning it to the circulating system. As shown in Fig. 1, strong solution passes from the absorber 12 through pipes 14 and 15 to the liquid heat exchanger 16, under normal operating conditions, while rich gas mixture from the .evaporator enters the accumulating vessel 13 at 11 and enters the absorber by pipe 14. Under adverse conditions liquid refrigerant. is added to the flow of gas entering at 11 and forms a surface layer on the liquid in the accumulating vessel. When the pump is stopped the residual strong solution in the absorber will flow into pipe 15 and through the vents 19 into the accumulator vessel. On the pump restarting the surface layer of strong solution will be drawn off into cir cuit through pipe 15, since there will be no solution initially flowing from the absorber. As shown in Fig. 2, rich solution comes from the absorber by pipe 25, being introduced into the absorber vessel 26 which communicates with the accumulator vessel 29 by gas opening 24. The conduit 27 opens into the absorber vessel at a level slightly below that of the opening 24, acts as an overflow device, and under normal conditions leads strong solution to the liquid heat exchanger. Under adverse conditions liquid refrigerant will flow into the accumulator vessel from the pipe 21. On cessation of pumping strong solution will flow from the absorber into absorber vessel 26 and overflow into pipe 27 and since the pipe 27 and vessel 29 are in liquid communication by pipe 28 a corresponding amount of solution will flow from pipe 28 into vessel 29. On restarting the pump mixture will initially be drawn only from the strong solution in vessel 29 by pipe 28 because no solution is entering vessel 26 from the absorber and hence none is overflowing into pipe 27. Specification 706,533 is referred to.
Patent GB-457553-A (GB)
Title: Improvements in or relating to yarn tubes for employment in spinning mules
IPC: B65H75/26
Filed: 1935-02-28
Abstract: 457,553. Tubes for yarns. LOWRY, A. S., Oakwood Mills, Romiley, Cheshire. Feb. 28, 1935, No. 6337. [Class 120 (iii)] A paper tube for use in spinning- mules has its yarn-bearing portion 6 formed with a highly frictional surface consisting of a series of separated embossings forming a series of points or projections 7 and its nose portion 9 formed with a surface which, while presenting a low degree of resistance to the gyration of the unwinding yarn, prevents the unwound yarn moving longitudinally thereon. As shown, the nose surface is formed by embossings similar to the embossings 7 but of less depth and the embossings may decrease in depth from the portion 6 towards the nose of the tube ; alternatively, the nose portion may be formed with peripheral corrugations or ribs which may be arranged in rings or spirals on the surface of the nose.
Patent GB-743646-A (GB)
Title: Improvements in or relating to electrical measuring equipment
Inventor: HARRIS PETER MICHAEL
IPC: G01B11/08
Filed: 1952-03-12
Abstract: 743,646. Measuring linear dimensions photoelectrically. STANDARD TELEPHONES & CABLES, Ltd. March 12, 1953 [March 12, 1952], No. 6387/52. Class 40 (3). [Also in Group XXXVIII] In an arrangement for the electrical measurement of a linear dimension of an object wherein the object is scanned by a source of light which moves along the dimension, light passing outside the dimension is detected to limit the traverse of the scanning beam to the dimension, and an electrical parameter, e.g. maximum voltage, or frequency, characteristic of the traverse of the beam, is measured to indicate the required dimension. Oscillation of a spot of light 17 on a cathode ray tube 1, Fig. 1, is detected by a photo-electric cell 3, and interruption of the beam by the object 2 being measured results in a detected wave, as shown in Fig. 3A. The wave after being amplified, limited, and shaped in stages 4, 5 and 6, is applied to a differentiator circuit 7, wherein the changes of current in the wave-form arising from the spot passing behind the object and emerging therefrom result in positive and negative pulses. The negative pulses, after phase inversion control through a pulse gate 8 the scanning multivibrator 9, so that the direction of scan is reversed by each pulse arising from the emergence of the spot from behind the object. The frequency of reversal of the multivibrator and its peak amplitude are thus indicative of the desired dimension. In a modification, two separate photo-electric cells, one above and one below the object, may be employed. It is also stated that an optical system between the cathode ray tube and the object may be advantageous.
Patent GB-176380-A (GB)
Title: Improvements in aircraft
IPC: B64C3/24
Filed: 1922-03-04
Abstract: 176,380. Besa, J. L. Sanchez-, Toussaint, A., and Bertrand, J. J. M. March 4, 1921, [Convention date]. Screw propellers. -Propellers, planes, &c. of aircraft comprise skeleton reinforcement members capable of withstanding stress and an enshrouding moulded mass of composite light materials. Fig. 1 shows a small aeroplane wing which is constructed by using a mould formed of two shells corresponding with the upper and lower surfaces of the plane. A tubular reinforcing-member a is supported in the mould, and the enshrouding mass b is introduced into the mould in the condition of a homogeneous paste which preferably consists of fragments of cork mixed with a solution of collodion in acetone. After desiccation in a stove, the wing is removed from the mould and varnished or surrounded by an envelope c of canvas, paper, or thin sheet metal such as duralumin. Cores may also be fixed within the mould for leaving recesses in the moulded mass. For larger planes, a reinforcement of longitudinal members and ribs is supported within the mould. Wires or metal trelliswork may also be embedded in the material. Another method of construction is to fix together two slabs of the material provided with grooves for accommodation of the reinforcing-members and holes for lightness, and to work the surface of the double slab to the desired shape. The Specification as open to inspection under Sect. 91 (3) (a) states that the natural period of vibration of the light mass should be outside the audible range; and that the reinforcement may be of flexible material, which is rendered rigid subsequent to assembly and may be adhesively secured. This subject-matter does not appear in the Specification as accepted.
Patent GB-882824-A (GB)
Title: Feed adjustment for consumable electrodes in vacuum electric arc furnaces
IPC: H05B7/109
Filed: 1958-02-27
Abstract: 882,824. Automatic arc control systems. HERAEUS G.m.b.H., W.C. Feb. 27, 1958 [Feb. 27, 1957], No. 6403/58. Class 38 (4). In an electrode feed system for a vacuum arc furnace in which the electrode is positioned by a pair of oppositely rotating motors driving through a differential, the speed of one motor is raised or lowered by a relay responsive to arc conditions, and the average speed of the motor is controlled by the integral of the error. The controlled motor 15 and a constant speed motor 32 drive through differential gearing 33 to adjust the position of the electrode 6 with respect to the molten pool 7. The arc current is measured by the voltage across a shunt 1 and this is normally balanced by a reference voltage obtained from a rectifier 3; any difference energizing one coil 5 of a polarized relay. The arc voltage is similarly balanced by a reference voltage from a rectifier 9, and any difference energizes a second coil 11 on the polarized relay. The coils 5, 11 are connected so that an increase in arc current moves the relay in the same sense as does a decrease in arc voltage. The relay, by its contacts 12, 13, effects a large change in the control voltage applied to a pair of thyratrons supplying the motor 15 so as to produce a rapid correction of any deviation in arc voltage or current. At the same time, relay contacts 18, 19, 20 energize a reversible motor 16 which adjusts the slider 17 of the potentiometer supplying the thyratron control voltage, so that when the relay is not energized, the motor 15 feeds the electrode forward at a rate determined by the algebraic sum of the relay operations over a period of time.
Patent GB-512470-A (GB)
Title: Manufacture of polymethine dyestuffs
IPC: C09B23/08
Filed: 1938-03-01
Abstract: 512,470. Dyes. I.G. FARBENINDUSTRIE AKT.-GES. March 1, 1938, No. 6410. Convention date, March 6, 1937. Sample furnished. [Classes 2 (iii) and 15 (ii)] Nonamethine dyes are made by reaction of glutaconic acid with an aldehyde of the general formula in which R<1>=alkyl and R2 =aryl, or R1 and R2 - together form part of a hetero ring system which includes the nitrogen atom, in presence of a condensing agent of acid character. It is assumed that 2 mols of the aldehyde react with 1 mol of glutaconic acid with elimination of CO2 and water. In the examples, tetrahydroquinoline-N-propenal, monomethylaniline-N- propenal and 2-methylphenmorpholine-N-propenal are condensed with glutaconic acid in presence of glacial acetic acid and acetic anhydride. Dihydro-alpha-methylindole derivatives are also specified as starting materials. The dyes may be used for dyeing acetate artificial silk and'in photography for making light filters. They may also be converted into undecacarbocyanines which are useful for infra-red sensitization. Specifications 441,624 and 485,624 are referred to.
Patent GB-292209-A (GB)
Title: Improvements in and relating to brackets, stands and the like, for jars or other vessels
IPC: A47F5/00
Filed: 1927-03-08
Abstract: 292,209. Cowie, J., Turpin W. A., and Craig, D. A. March 8, 1927. No Patent granted (Sealing fee not paid). Stands and tilters.-Relates to brackets, stands &c. for tiltably or pivotally mounted jars &c. According to the invention means are provided for positively retaining the jar &c. in an upright position and the jar &c. moves by its own weight into a tilted position when the retaining means are released. The jar &c. may be provided with a self-opening or other closure head. In Fig. 1 the device comprises a bracket a secured to a wall &c. having an integral member b carrying a closure cap d. The cap d has a coned seating and is provided with a rubber &c. sealing-ring e. A spring k presses the cap d downwards. A basket o is pivoted at r on a bracket r carried on the bracket a. The yoke o<1> of the basket o is laterally expandable to receive a jar &c. against the action of a coiled spring or springs on the pin r. A latch u having a foot u<2> for maintaining it at right angles to the part a, is pivoted at t and can be turned out of engagement with the jar &c. by means of a laterally projecting pin &c. u<3>. Ears v are secured to the basket yoke to steady the jar therein and are holed to pass over the pivot r. In operation the latch u is tilted upwardly and the jaw swings into a position abutting a rubber pad q when goods &c. therein are readily accessible. A device w may be provided for holding a label &c. In a modification in which the jars are carried on stepped brackets secured at one end to the floor and at the other to a wall, the latches u are fitted above the supports n and the pins u<3> engage in slots in the ears v to hold the jaws &c. in the upright position. Manually applied covers may be used in this case. In Fig. 8 a number of tiers of jars are arranged to revolve about a standard 25. The covers 18 and latches 8 are arranged to move together by interconnecting links 35. The stand is adjustable umbrella-wise by unfastening the collar 27 and the slope of the brackets varied thereby. A shelf 36 is provided at the top. In a further modification the cap d, Fig. 1, may be provided with lateral pins engaging in slots in the member b and may be manually operated to engage the mouth of the jar &c. and hold it in the upright position. The Provisional Specification describes also a screw and spring adjusting means in the bottom of the basket or holder to ensure that the jar fully engages the closure head. Further, that hit and miss catches and recesses may be employed on the closure head and in the flanged edge of the cap respectively to retain the cap in position. In this case the closure disc may have a downwardly projecting V-shaped depression which springs into the mouth of the jar as the end of the upward movement thereof is reached. Means may also be provided for enabling the closure cap to be released before the jar is tilted.
Patent GB-916770-A (GB)
Title: Improvements in or relating to neutron flow detectors
Inventor: BERNARD MAURICE
IPC: G01T3/08
Filed: 1959-02-25
Abstract: 916,770. Semi-conductor devices. COMMISSARIAT A L'ENERGIE ATOMIQUE. Feb. 25, 1959 [March 4, 1958], No. 6519/59. Class 37. A semi-conductor crystal for detecting neutron flux comprises a germanium or silicon crystal having an impurity element such as boron diffused throughout, the impurity being such that a (N,α) or (NP) reaction occurs when the crystal is subjected to the neutron flux and a layer of the element being deposited on the surface of the crystal.
Patent GB-841923-A (GB)
Title: Improvements in and relating to assemblies of structural elements
IPC: F42B10/06
Filed: 1958-02-28
Abstract: 841,923. Ammunition. CONTRAVES A. G. Feb. 28, 1958 [March 1, 1957], No. 6604/58. Class 9(1). [Also in Group XXV] The body 1 of a rocket is provided with a guide groove to receive the root of a fin 2, an elastic hose 6 being placed in the groove and inflated by compressed air after assembly of the fins to prevent play between the fin and the body. Lugs 4 projecting inwardly from the sides of the groove engage similar lugs 3 on the fin. In the bottom of the guide groove are two recesses each containing a hose 6, each hose being connected to a compressed air container for inflation after the fin is inserted in the groove. Fig. 3 shows two wedges 7 placed in the guide groove under the root of the fin and separated by a hose 8 so that by inflation of the hose the wedges are moved outwards to secure the fin.
Patent GB-119629-A (GB)
Title: Improvements in Shaft Pulleys.
Inventor: GOODWIN ARNOLD
IPC: F16H55/44
Filed: 1918-04-19
Abstract: 119,629. Goodwin, A. April 19, 1918. Pulleys.-Driving-pulleys are built-up from three or more strips d, which may be grooved longitudinally for stiffening, and are bolted together by holts h to secure the pulley on the shaft or bush and are riveted to the sectional rim a. Additional stiffening-spokes i secured by the bolts h and riveted to thet rim may be used.
Patent GB-1247240-A (GB)
Title: Improvements in or relating to phase measuring and monitoring circuits
IPC: G01S1/30
Filed: 1969-02-07
Abstract: 1,247,240. Selective signalling. MARCONI CO. Ltd. (Amalgamated Wireless (Australasia) Ltd.). 7 Feb., 1969, No. 6763/69. Heading G4H. In order to measure the phase of an unknown signal with respect to a reference signal, first the phase of the reference signal with respect to a frequency-locked comparison signal is determined by counting clock pulses between adjacent zero cross-overs, and second the phase of the unknown signal with respect to the comparison signal is measured by counting clock pulses between adjacent zero cross-overs, these pulses being counted negatively in the same counter used to measure the phase of the reference signal, so that the final count is a measure of the phase of the unknown signal with respect to the reference signal. The use of an intermediate comparison signal permits the zero cross-overs of both the reference signal and the unknown signal to be determined by a single time-shared circuit including a harmonic filter.
Patent GB-330244-A (GB)
Title: Improvements in steering gear
IPC: B63H25/10
Filed: 1929-03-01
Abstract: 330,244. Fair, C. D. March 1, 1929. Rudders; steering-gear; detachable installations.-A steering-gear unit for motor boats comprising a base carrying a steering wheel or tiller which is coupled by Bowden wires to the rudder head. The wheel 1 is secured to a drum 2, Fig. 2, rotatably mounted on a stand comprising a pivot portion 3 and a flange which can be placed in any required position on the boat. The inner wires 11 of Bowden wires 6, 7 are secured to the drum and at the other ends to the rudder quadrant, the outer casing abutting against stops 8 on the flange 4 and other stops adjacent the rudder. To prevent slip the wires 11 pass around grooves in the drum and are clamped thereto. For outboard motors or where the rudder is tiltable, the stops 9 at the rudder end are carried on a bar 10 on which the pivotal action takes place. An ignition or other control lever 26 may be mounted on the stand.
Patent GB-1241341-A (GB)
Title: Polymerisation of dodecanolactam
Inventor: MCGRATH HARRY
IPC: C08G69/16
Filed: 1968-02-12
Abstract: 1,241,341. Polydodecanolactam. IMPERIAL CHEMICAL INDUSTRIES Ltd. 23 Jan., 1969 [12 Feb., 1968], No. 6816/68. Addition to 1,084,325. Heading C3R. Dodecanolactam is polymerized in the presence of a catalytic amount of an organic phosphonic acid and a catalytic amount of a carbonate ester or an N-acetyl lactam. Phosphonic acids specified include: cyclohexyl phosphonic acid, methyl phosphonic acid, phenyl phosphonic acid and benzyl phosphonic acid. The carbonate may be diphenyl carbonate, di-nbutyl carbonate, dimethyl carbonate, dibenzyl carbonate or dicyclohexyl carbonate. The acetyl lactam may be N-acetyl caprolactam or N- acetyl dodecanolactam formed in situ from dodecanolactam and an acetylating agent, e.g. acetic anhydride. The reaction mixture may also include a chain terminator, e.g. stearic acid or an N-substituted amide such as acetanilide, benzanilide, N-butyl benzamide, N-acetyl butylamine or benzoyl piperidine. In Examples 1-5, water is present as a catalyst. In Example 6, toluene is present as a reaction medium.
Patent GB-1068644-A (GB)
Title: Polymer/antioxidants compositions
IPC: C08K5/372
Filed: 1965-02-17
Abstract: Polymers are stabilized with a phenolic antioxidant plus a tetra-alkyl ester of thiodisuccinic acid of formula <FORM:1068644/C3/1> wherein R is alkyl or phenalkyl.  Specified polymers are polyethylene, polypropylene, polyvinyl chloride, polybutadiene, polyisoprene, polyisobutylene, polystyrene, and polyoxymethylene.