baber/WOPTO huggingface dataset:
Patent GB-1425151-A (GB)
Title: Method and apparatus for measuring gas flow
IPC: G01F1/704
Filed: 1973-03-22
Abstract: 1425151 Measuring mass flow-rate AUSTRALIAN ATOMIC ENERGY COMMISSION 22 March 1973 [24 March 1972] 14011/73 Heading G1A In a method of or apparatus for the absolute measurement of the mass flow-rate of a gas a radioactive tracer isotope gas, with a known activity relative to a standard volume, is injected into the flowing gas and the activity of a small sample removed from the gas flow downstream at a sufficient distance to ensure homogeneous mixture of the tracer isotope with the flowing gas is measured.  The apparatus consists of a gas tight fixed  volume rechargeable cartridge 18 also Figs. 3A-3C, (not shown) operable to discharge a short duration "pulse" of a radio-active tracer gas into the gas  stream, at 37, when a valve 19 is opened allowing gas from a cylinder 20 to drive a cylinder within the cartridge and expel the tracer gas. A sample of the gas mixture is then extracted from the flow by a valve 29 supplying two gas paths, one via a valve 31 leading to a detector system 12 for detecting the duration of the passage of the gas which has been mixed with the tracer, the other via a valve 30 and a sampling valve 32, also Fig. 7 (not shown), to two sampling bags 26 and 27. The sampling time is recorded using a pulse generator 33 feeding a scalar 34 via a switch 35 which allows the pulse generator 33 to supply the scalar 34 while the detector system 12 is detecting the passage of radio-active gas. After the passage, the gas in the sampling bags is transferred to one bag 26 and the sample is sealed at valve 28 and is then set aside for radio-active counting by a radio-activity counter 17, Fig 2 (not shown). The radio-active counter has a fixed volume sample chamber made from a phosphor plastics cup 14 inserted within a metal cup 16 and comprising a further chamber 11  with a fan 45 and a pump 13 to ensure thorough mixing of the gas. The detector is calibrated with gas derived from dilution of the tracer gas from the rechargeable cartridge into a vessel of known volume. Thus the mass flow-rate may be determined by comparing the count rate registered by the detector when the sample chamber is filled  with gas from the representative sample with the calibrating count rate.
Patent GB-484362-A (GB)
Title: Wringers
IPC: D06F45/04
Filed: 1937-05-20
Abstract: 484,362. Wringers. TRIGGS, W. W. (Lovell Manufacturing Co.) May 20, 1937, No. 14035. [Class 138 (ii)] Means for quickly relieving the pressure between the rollers of a wringer comprise a bar 20 provided with upstanding lugs 27 projecting through apertures 28 in the top of the inverted channel shaped top cross-bar 12 and secured to transverse bars 31 extending between a pair of longitudinal side rails 31b whereby on depressing either side rail the bar 20 is rocked against side springs 20a about an axis extending longitudinally of the top bar. The ends of the bar 20 are formed with nose pieces 19 which normally engage lugs 18a on the ends of levers 16 pivoted at 17 in the top cross-bar and formed with latches 14 engaging shoulders 13 in apertures in the side stiles. On swinging 'the bar 20 it frees the lugs 18a, the pressure spring 9 then swinging the levers 16 to unlatch and raise the top cross-bar from the side stiles and so relieve the pressure. The side rails 31b may be replaced by a skirt extending all round the top cross-bar.
Patent GB-984325-A (GB)
Title: Independent power take-off for vehicles
IPC: F16D48/02
Filed: 1963-04-09
Abstract: 984,325. Disc brakes; fluid pressure brakes; toothed gearing; controlling clutch-brake combinations; friction clutches. INTERNATIONAL HARVESTER CO. April 9, 1963 [April 19, 19621, No. 14088/63. Headings F2C, F2E, F2F, F2L and F2Q. A vehicle power-take-off has a clutch between a driving shaft 11 and a driven shaft 12 and brake means operative on the driven shaft, the clutch and brake means being respectively either engaged and released by hydraulic pressure or alternatively disengaged and applied by springs 34 and 41, preferably under control of a single hydraulic valve. The clutch comprises a series of plates 19, splined to enlarged tubular extension 18 of shaft 11, interleaved with plates 29, splined to arms 28 of member 26 splined to shaft 12, engageable by introduction of hydraulic fluid to chamber between member 26 and piston 31 slidable therein. The brake means comprises a number of rods 39 (one only of which is shown in Fig. 1) whose right-hand ends are applied against flange 27 of member 26 by springs 41 and are each releasable by hydraulic pressure in a chamber 37 acting on a piston portion 40 of the rod. A second power-take-off shaft 13 is geared to shaft 12 but runs at a slower speed. The control valve, Fig. 4, comprises a valve plunger 81 with a number of portions with different diameters slidable in corresponding diameter portions of bore 63 in housing 10, and on which is slidably mounted valve spool 86. In the position shown pressure fluid from input shaft driven gear pump 54 and inlet 67 is directed by spool valve 86 through passage 68 to chamber 69 in member 26 from which it enters the chambers 30 and 37 to engage the clutch and release the brakes. Since end 88 of spool valve 86 is in a larger diameter bore than end 87, when the differential force between the ends exceeds the load of spring 89, end 88 is lifted from its seat 66 to act as a pressure relief valve allowing fluid to pass through passage 71b to reservoir. In a further position of the valve (Fig. 5, not shown) in which garter spring 77 is seated in groove 85 of plunger 81, fluid from inlet 67 passes directly to passage 71b and the reservoir and the springs 34, 41 of the clutch and brake means displace fluid back through chamber 69 and passage 68, above end 87 and through passage 71a to the reservoir.
Patent GB-932191-A (GB)
Title: Low temperature separation of gas mixtures
Inventor: SCHUFTAN PAUL MAURICE
IPC: F25J3/04
Filed: 1961-04-19
Abstract: 932,191. Cold separation of gas mixtures. BRITISH OXYGEN CO. Ltd. April 12, 1962 [April 19, 1961], No. 14134/61. Class 8(2). In a process for the separation of carbon dioxide impurity from a gas mixture e.g., air being cooled in one or other of switch exchangers 10, 10<SP>1</SP> prior to rectification in a column (not shown) and wherein carbon dioxide is condensed at the cold end of the on stream exchanger and is subsequently resublimed therefrom by a reverse flowing separated component e.g., nitrogen, a minor portion of the compressed feed air is withdrawn from the on-stream exchanger at a level 11 where the temperature at near the sublimation point of carbon dioxide and final cooling is effected by expansion in a turbine 13 and the resulting suspension of solid carbon dioxide is removed e.g., by a filter 14 prior to the so-cooled minor portion being passed to the column together with the major portion having the cold end of the exchanger. The temperature of the gas mixture to be expanded is adjusted by passing it through a heat storage chamber 12 and adding through a valved duct 15 a portion of the cold major air stream. In a modification the expanded air stream is freed of solid carbon dioxide in a liquid air bath 17 and the contaminated liquid is filtered at 18. Specification 917,286 is referred to.
Patent GB-996523-A (GB)
Title: Method of preparing polyurethane foam
IPC: C08J9/00
Filed: 1962-04-12
Abstract: A polyurethane foam is prepared by providing a composition of an organic polyisocyanate having at least two functional isocyanate groups, a polyol such as castor oil, a polyester, a polyether or a mixture thereof, and a blowing agent solubilizing a wood resin having a softening point of at least 160 DEG  F. in at least one of the polyol or polyisocyanate reactants in an amount between 2 and 50% of the weight of the foam reactants, and mixing and reacting the ingredients to produce a foam.  In Examples: (1) a mixture of wood resin, sorbitol-propylene oxide polyether, a pentakis hydroxypropyl dimer of ethylene diamine and tetramethyl guanidine is heated until homogeneous.  After cooling, a stannous catalyst and monofluoro trichloromethane are added. Foaming is effected by stirring in toluene-2,4 and 2,6 diisocyanates containing organo-silicon surfactant.  Other examples illustrate the use of the quasi-prepolymer method, the resin being incorporated with the diisocyanate before the foaming reaction. Tetrakis (2-hydroxypropyl) ethylene diamine and a nitrogen-containing polyether are alternative starting materials. Alternative methods with water as the foaming agent and propylene glycol and triethylene diamine as cross-linkers are also referred to.  The use of polyesters from e.g. trimethylol ethane, trimethylol propane, glycerol and adipic, phthalic, sebacic, maleic and dimer acids is also described. Carbon tetrachloride and methyl chloride are other suitable blowing agents. Suitable wood resins are the aliphatic hydrocarbon-insoluble solid resin portion of wood, which may be hexa treated, heat bodied and air blown wood resin and polymerized wood resins.
Patent GB-1016392-A (GB)
Title: Resilient support unit
Inventor: POOLE RONALD ROBERTSON
IPC: F16F1/54
Filed: 1962-04-12
Abstract: 1,016,392. Resilient mountings. GENERAL MOTORS Ltd. April 4, 1963 [April 12, 1962], No. 14151/62. Heading F2S. [Also in Division F2] A resilient support, adapted to be stressed in compression and allow a degree of transverse circular motion, comprises a block 3 of resilient material mounted between a pair of coaxial cup members 1, 2, the inner surfaces of the cup members and the outer surface of the block being shaped and disposed to form intervening annular spaces which taper towards the bases of the cups. Bolts 6, 7, secured, e.g. by bonding, to the blocks 3 project with clearances through apertures in the cup members. As shown in Fig. 2, the cup members have frusto-conical inner surfaces which co-operate with straight sides of the block while in another embodiment, Fig. 4 (not shown), the cup members are of cylindrical shape, the straight sides of which extend over concave sides of the block. The inner surface of the cups 1, 2 and the outer surfaces of the block 3 can be both shaped non-cylindrically.
Patent GB-497646-A (GB)
Title: Improvements in or relating to radio receivers and the like
IPC: H03G11/04
Filed: 1937-05-21
Abstract: 497,646. Wireless receiving systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. May 21, 1937, No. 14226. Convention date, May 21, 1936. [Class 40 (v)] Noise impulses render nonconducting a discharge path associated with a condenser shunted across the input of an amplifier, to prevent potential variations across said condenser and render the amplifier irresponsive to signals. As shown H.F. signals are rectified by a diode 27, amplified by a cathode-follower triode 12 and fed through a delay network 13, 14 to a further cathode-follower triode 16, feeding a further amplifier 11. Noise impulses of above an amplitude predetermined by the biassing source 22, lower the cathode potential of valve 12 so that diode 19 becomes conducting to feed an impulse through condenser 23 to bias valve 18 to cut-off. This valve 18 acts as the cathode impedance of valve 16 which is thus disabled, and also as a discharge path for the condenser 15 shunted across the input of valve 11 which thus is maintained at a steady potential. In a modification, Fig. 2 (not shown), the bias of diode 19 is dependent upon signal strength being derived from the load resistance of diode 27. In a further embodiment, Fig. 3 (not shown), the disabling bias for valve 18 is derived from the opposition of the steady voltage from the signal detector and the audio output of the first L.F. amplifier.
Patent GB-1097964-A (GB)
Title: Improvements in and relating to magnetic door locks
IPC: E05C19/16
Filed: 1965-04-05
Abstract: 1,097,964. Latch fastenings. PHILIPS' GLOEILAMPENFABRIEKEN N.V. April 5, 1965 [April 8, 1964], No. 14302/65. Heading E2A. A magnetic door latch comprises a latch bolt engageable with a striking plate by magnetic attraction, a follower rotatable manually to withdraw the latch bolt from the striking plate to release the latch and cam means rotatable with the follower and operable during the initial rotation thereof in the direction to release the latch, to tilt the lock bolt on the striking plate. The magnetic latch bolt 3 slidable in a housing 1 in a door 8 engages a striking plate 16 of ferromagnetic material on the door jamb to hold the door closed. By turning a handle shaft 11 anticlockwise the follower 10 thereon rotates against the action of a spring 20 and releases the bolt from the striking plate by engaging a pin 12 between plates enclosing and magnet forming the bolt. The bolt tilts as the pin 12 moves up a cam track 15 on the follower and withdraws the bolt when it engages in a recess 14 in the follower. To facilitate closing the door the front edge of the striking plate has a ramp and one edge of a bolt plate is rounded. The forward movement of the bolt is limited by a projection 21 on the bolt engaging an adjustably positioned set screw 22 on the door. The movement of the follower is limited by a projection 23 thereon engaging edges 24 of the housing 1. The bolt may be held withdrawn by a weak magnet in the housing.
Patent GB-601064-A (GB)
Title: Improvements in or relating to devices for cleaning rollers, such as textile crushing rollers
IPC: D01G15/80
Filed: 1945-06-08
Abstract: 601,064. Clearers for burr-crushing &c. rollers. VARGA, A., and MERCHANT, T. June 8, 1945, No. 14548. [Classes 120(i) and 120(ii)] A roller cleaning device has a movablymounted blade pressed against a roller by one or more tension springs which extend in the same direction as the blade, each spring being anchored by a quick-release means. The cleaning device is described in connection with rollers for crushing foreign bodies in carded webs, as disclosed in Specification 444,043. Each roller 1, 2 is provided with a blade 6 fixed to a carrier 5 mounted on arms 8 on cross-shafts 3. Springs 9 hold the blades 6 against the rollers and are mounted at their outer ends in fixed, slotted brackets 15 by means of threaded rods 12 and adjusting nuts 14. The rods 12 may readily be lifted from their slots in brackets 15 to release the tension of the springs and allow the blades to be moved away from the rollers. The blades may be pivotally mounted on the shafts 3 or slidably arranged on guide brackets.
Patent GB-1132845-A (GB)
Title: Sacks with multi-layer walls
Inventor: JAMES ALAN PATERSON
IPC: B65D30/08
Filed: 1965-04-06
Abstract: 1,132,845. Multi-ply bags. IMPERIAL CHEMICAL INDUSTRIES Ltd. 23 March, 1966 [6 April, 1965], No. 14578/65. Heading B8K. A multi-ply bag has at least one layer (but not the outer layer) of a resilient cellular material so that the bag is self-sealing when punctured. The cellular layer may be a polyurethane foam or other foamed plastics or rubber. Further layers may be of fabric or woven material, or of plastics film or paper. Further layers of cellular material may be provided.
Patent GB-375947-A (GB)
Title: Improvements in and relating to heavy current electric switch contacts
IPC: H01H1/42
Filed: 1931-05-18
Abstract: 375,947. High tension switches. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Thumim, C. ; P.O. Box 5312, Philadelphia, U.S.A.) May 18, 1931, No. 14632. Convention date, May 20, 1930. [Class 38 (v).] Contacts.-A fixed contact for an oil switch comprises two contact pieces 2 pivoted at 11 to a conducting member 6 carried by a main conducting stud 8 so that longitudinal strains are taken by the pivot 11. Braided conductors 12 connect the pieces 2 to the part 6 and leaf springs 13 press the contact pieces together, their movement being limited by shoulders 2<1>. The contact surfaces have silver inserts 15 which co-operate with silver inserts 16 on the wedge-shaped movable contact bridge 4. A pair of pivoted auxiliary contacts (not shown) are mounted on the contact head 6 alongside the main contacts 2 and co-operate with the end of the bridge 4. The auxiliary contacts are made longer so as to take the arc, and have flared tips for that purpose.
Patent GB-475174-A (GB)
Title: Improvements in and relating to combustion product power plant
IPC: F02B75/28
Filed: 1936-05-23
Abstract: 475,174. Combustion-product power plant ; two-stroke-cycle engines; cylinders. BAILEY, R. W., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. May 23, 1936, No. 14632. [Classes 7 (i) and 7 (ii)] A combustion unit for a combustionproduct plant works on a two-stroke cycle and has one or more pairs of opposed pistons 3, 3<1>, each pair acting in cylinder barrels 1, 1<1> arranged in substantial alignment with a combustion chamber 5 located between the cylinders and an exhaust valve or valves 6, 6<1> in the wall 8b of the combustion chamber, the walls 8a, 8b of which are lined with screening material tending to minimize the transfer of heat. The screening material is preferably heat-resistant steel or alloy, the surface in contact with the combustion chamber wall being grooved or recessed to reduce heat conduction, As shown, the combustion chamber 5 extends laterally and the exhaust valves are of the poppet type moving in a direction substantially parallel to the cylinder axis. Piston-controlled air-inlet ports 7, 7<1> are surrounded by manifold casings 14, 14<1> to which air is conveyed through a duct 10, a space around the combustion chamber walls 8a, 8b and ducts 13, 13<1>, which may be flexible. Specification 475,036 is referred to.
Patent GB-1025180-A (GB)
Title: Printing machine conveyor systems
IPC: B41F15/24
Filed: 1963-04-11
Abstract: 1,025,180. Screen printing apparatus. F. BUSER A.G. April 11, 1963 [April 12, 1962; July 13, 1962], No. 14634/63. Heading B6C. A process for securing a web to be printed to a conveyer belt of a printing machine comprises the steps of applying thermoplastic material to the belt and adhering the web thereto by heating the material and pressing the web and conveyer together. In the screen printer shown, Fig. 1, thermoplastic material in a viscous or pasty state, e.g. a polyamide vinyl polymer or polyacrylate, is applied to an intermittently moving rubber conveyer belt 1 by a blade 26 such that when the material on the belt initially contacts the web 3 there is some adherence therebetween. Complete adherence is effected in a heat press which comprises an inflatable air container 5, the maximum pressure of which is controlled and which intermittently presses against a stationary, thermostatically controlled, heated plate 6, whereby web and belt are flattened therebetween and securely stuck at least until after passage through the screen printing station 22. Mechanism 20 ensures simultaneous printing and heat press application whilst the belt 1 is stopped. A wedge 28 is provided to strip the web from the belt. In another embodiment the heat press comprises a stationary liquid filled rubber container and a movable heated plate. When this plate is in its lowest position pressing the web against the belt the degree of pressure is determined by the level of the liquid in a standpipe which is connected to the rubber container. In order to prevent a reduction in the liquid level in the standpipe and an inflation of the container while the heated plate is being lifted, a valve is provided in the connection between the standpipe and the container which is controlled from the machine control such as 20, Fig. 1, so as to be closed immediately prior to the lifting of the plate and to be opened while the plate rests on the web. The heated plate in both embodiments is covered on its side facing the web 3 by a chromium or nickel plating or is stainless steel sheathed or is covered with polytetrafluroethylene.
Patent GB-204361-A (GB)
Title: Process of and apparatus for electrically separating suspended particles from electrically non-conducting, especially gaseous fluids
IPC: B03C3/40
Filed: 1922-05-25
Abstract: 204,361. Lodge-Cottrell, Ltd., (M÷ller, E.). May 25, 1922. Gases and vapours, electrically precipitating suspended particles from.-Precipitators employed in multiple-stage electric gas purification are arranged so that in successive stages the current density and in some cases the electric field are increased in the neighbourhood of the collecting electrodes. In one method, the spacing of the electrodes is reduced and the electric pressure increased in parts B<1>, C<1> of the apparatus reached later by the gases; the pressure may approach closely to the disruptive limit, which may be raised by increasing the auxiliary field surfaces 3b<1>, 3c<1>, and by constructing these and the discharge electrodes so as to avoid sparking, e.g. by rounding-off, grooving at the edges, or making parts of oval cross-section. Alternatively, the electrode distance may be kept constant or increased in the later stages, and the current density increased near the collecting electrodes by increasing the voltage and providing more numerous field surfaces. The discharge electrodes 1b<1>, 1c<1> for later stages may have diameters decreasing either absolutely or relatively to the electrode distances. The initial treatment may be effected by positive discharges from a " pubescent " electrode 1a<1> and the subsequent treatment by a negative corona discharge; or where current is to be small, the initial treatment may be with a positive brush and the later treatment with a positive glow discharge. It is advisable to increase in the later stages, the partial current volumes," i.e. the total space which would be occupied by ionic discharges if dust were absent. In some cases, however, the " partial current volume " may be greater in both the initial and final stages than in the intermediate one. Specifications 17840/12, 19733/13, and 17175/14 are referred to.
Patent GB-1058101-A (GB)
Title: Double sheathed cables
IPC: H01B13/26
Filed: 1964-04-10
Abstract: 1,058,101. Cables. GENERAL CABLE CORPORATION. April 10, 1964 [April 29, 1963], No. 14934/64. Heading H1A. An electric cable comprising insulated conductors 10 surrounded by a paper or a rubber and polyester wrapper and an outer metallic sheath 36 is provided with an inner jacket 14 which consists of a metal foil 16 sandwiched between and bonded to two polyolefin sheets 18, 20 and which is folded loosely round the core and seamed along its longitudinal edges. In forming the seam, the edges of the jacket may be bonded by adhesive or by ultrasonic or hot air heating. The polyolefin sheets 18, 20 may be of copolymers of polyethylene modified by monomers containing reactive carboxyl groups. The metallic foil 16 may be of aluminium and the outer metallic sheath 36 may be of either folded corrugated aluminium or of aluminium and steel. The conductors may be pulp or polyolefin insulated and the wrapper may be either in the form of helically applied paper tape or of longitudinally folded and overlapped laminated tape of rubber and polyester. A protective sheath 38 of extruded polyethylene may be provided over the outer metallic sheath and seals 42 (Fig. 6, not shown) may be fitted over the seamed edges of the inner jacket.