baber/WOPTO huggingface dataset:
Patent FI-990003-A (FI)
Inventor: SKAR MERETE
IPC: C08F10/02
Filed: 1999-01-04
Abstract: This invention concerns process for producing polyethylene compositions, films prepared thereof and process for the preparation of the films. The process comprises subjecting ethylene, optionally hydrogen and comonomers to polymerization or copolymerization reactions in a multistage polymerization. At least one polymerization stage is conducted essentially in the absence of hydrogen. The polymerization reactions are carried out in the presence of a single-site catalyst capable of forming a composition comprising a low molecular weight component with MFR<HIL><PDAT>2 </SB><PDAT>of at least 10 g/10 min and a density higher than the density of the composition and a high molecular weight component. The melt flow rate of the composition is in the range MFR<HIL><PDAT>2</SB><PDAT>=0.1-5.0 g/10 min and the density of the composition is 915-960 kg/m<HIL><3</SP><PDAT>. The invention makes it possible to produce polyethylene compositions for manufacturing films with a good balance between optical and mechanical properties.</PTEXT>
Patent GB-155464-A (GB)
Title: Improvements relating to gas burners of the bunsen type
IPC: F23D14/10
Filed: 1920-01-12
Abstract: 155,464. Paterson, E., and Ault, H. E. E. Jan. 12, 1920. Perforated - t u b e burners. - In a perforated-tube burner of the Bunsen type, one or more of the jet apertures consist of a narrow cylindrical port b, a conical or expanding port c, and a shallow cylindrical port d.
Patent GB-606291-A (GB)
Title: Improvements in or relating to audio frequency transformers
IPC: H01F19/02
Filed: 1946-01-11
Abstract: 606,291. Transformers. JONES, K., (trading as ELECTRO-VOICE PRODUCTS). Jan. 11, 1946, No. 1049. [Class 38 (ii)] [Also in Group XXXVI] A transformer, which may be used at audio frequencies in radio telephony systems, comprises a casing having plug-and-socket elements at opposite ends, connected to the transformer windings, one of said elements being electrically connected to the casing to provide continuity of screening. The metal casing of the transformer D comprises a cylinder B with two hemispherical caps A, A and is filled with an insulating compound. One cap carries a jackplug E, having a central conducting rod and a conducting sleeve connected respectively to tags g, h, which are connected to the secondary. The other cap carries a jack socket F with two contacts b, c, connected to the primary winding and a contact spring a which connects contacts b, c, and short-circuits the primary until a plug is inserted when the connection is broken. One end of each winding are connected together and to the casing'where the jack-plug sleeve enters the casing cap. Copper foil screens the windings from each other. The transformer may be plugged into an amplifier panel, and the lead plugged into the transformer, and two or more transformers may be plugged together in series. The jacks may be replaced by ordinary pin-type plug-and-sockets, and a further pin may be connected to a tapping on the primary. There may be a socket at each end of the casing.
Patent GB-468846-A (GB)
Title: Improvements in or relating to frequency control electrical transmission lines
IPC: H01P7/04
Filed: 1936-01-13
Abstract: 468,846. Electric resonant units. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Jan. 13, 1936, No. 1126. Convention date, Jan. 12, 1935. [Classes 40 (iii) and 40 (v)] A resonance unit for use in short-wave wireless signalling comprises coaxial cylinders 1, 2, constituting a quarter-wave line, the construction being such that variation of frequency with temperature is obviated. The wireless apparatus is fastened to the unit, and the whole is resiliently mounted to prevent vibration. The inner cylinder 1 is shorter than the outer cylinder 2 and its length determines the electrical length of the unit. In order that this may be constant a metallic bellows 3 is fitted to the top of the inner cylinder and the overall length is held constant by an invar rod 1<1>. An additional small bellows 4 closed by a brass plate 5 can be adjusted by means of screws for the purpose of determining the wave-length. Panels carrying the wireless apparatus are fixed to the outer tube, Figs. 2, 3, 4 (not shown), and the latter is mounted upon springs 6, 8 to eliminate vibration.
Patent GB-783714-A (GB)
Title: New or improved control means for a motor vehicle
Inventor: SADLER FRANCIS ANTONY DAWSON
IPC: B60T13/18
Filed: 1955-01-14
Abstract: 783,714. Controlling vehicles. GIRLING, Ltd. Jan. 16, 1956 [Jan. 14, 1955], No. 1161/55. Addition to 748,638. Class 79(5) In means for controlling vehicle brakes and an engine throttle having a pedal controlled valve 10 in which release of the pedal 11 closes the throttle and applies the brakes, the release position of the pedal can be adjusted to give any desired degree of braking. As shown in Fig. 1, the pedal 11 is pivoted at 14 and is connected at 15 to a rod 12 actuating the valve 10 for the brakes and engine throttle of a vehicle as described in the parent Specification. In a modification, Fig. 2 (not shown) the rod 12 is connected to the bottom end of the pedal. A unit 13 determines the release position and comprises a sleeve 17, Fig. 3, secured to the rod 12 between a shoulder 19 and a nut 20, the sleeve being enclosed by an externally threaded housing 21 and a spring 25 being provided between washers 26, 27 adapted to abut shoulders on the' housing and sleeve. The housing 21 is adjustably locked by means of nuts 23, 24 to a fixed transverse member 22 of the vehicle, and by longitudinal adjustment of the housing relative to the member 22 the position of rest is determined. In addition to the control of the throttle valve of a petrol engine the invention is stated to be applicable to a diesel engine pump control and an electrically driven vehicle controller.
Patent GB-785511-A (GB)
Title: Improvements in or relating to control mechanism for reversing gears
IPC: F16H3/00
Filed: 1956-01-13
Abstract: 785,511. Reversing gearing. MAYBACHMOTORENBAU GES. Jan. 13, 1956 [Jan. 20, 1955; Feb. 28, 1955], No. 1275/56. Class 80 (2). In a reversing gear for marine use driven through a main progressive clutch and positive clutches for each direction of rotation, including an auxiliary drive through a progressive clutch from the main drive for synchronizing the driving halves of the positive clutches, the control means comprise a selector slide valve controlling a change-over slide valve directing pressure to a reversing clutch slide valve which temporarily engages the synchronizing clutch and at the end of the operation directs pressure through the selector valve to engage the main clutch, and including a device to cut off pressure flow to the selector valve during synchronization. A main driving shaft 1 is connected to a driving shaft 2 through an hydraulically engaged friction clutch 4, the gear 5 on the shaft 2 driving a gear 8 on a driven shaft 3 through gears 5, 6, 9, 8 for the forward direction and gears 5, 6, 7, 10, 8 for the reverse direction. The gears are engaged by repelling tooth dog clutches 11F/12F and 11R/12R for forward and reverse respectively, the clutches being engaged by a lever 13 actuated by a reversing clutch slide valve 18 working in a cylinder 19 and being urged by a spring 20 to the neutral position at mid-stroke. An auxiliary friction clutch 15 can connect a gear 16, concentric with shaft 2, to the driving shaft 1 to drive the gear 7 in the reverse direction for synchronizing purposes. Engaging lock valves 27F, 27R are connected through drag rings 77, 78 (F and R) to the dog clutches to prevent attempted engagement when the clutch elements are rotating in the same direction but at different speeds, i.e. when the repelling faces of the clutch teeth are not able to function. Manual selection of Forward, Neutral or Reverse, F, N, R, by lever 21 moves the selector valve 22 which passes pressure from line 30 to a change-over valve 24 and unloads the main clutch servo valve 25 to open the clutch. The change-over valve 24 passes pressure to the reversing valve 18 through shut-off valves 28F, 28R controlled by the engaging locks which are fed through a servo-valve 26. Initial movement of the valve 18 pressurizes the auxiliary clutch 15 to effect synchronization and at the same time moves slide-valve 23 to cut-off pressure from valve 22 during this period. Further movement of valve 18 vents the auxiliary clutch and moves the lever 13 to the appropriate clutch-engaged position. Valve 23 is then released and pressure is fed via valve 25 under the control of selector valve 22 to engage the main clutch.
Patent GB-157439-A (GB)
Title: Improvements in or relating to systems and/or apparatus for hauling or towing, especially applicable for hauling boats
IPC: B63B21/56
Filed: 1921-01-10
Abstract: 157,439. Couvreux, E. May 14, 1919, [Convention date]. Steam and other power cultivation of land. - Boats, agricultural implements, &c., are hauled or towed by a cable connected to a motor running on a single overhead rail l and supplied with current from an overhead conductor. The pull on the towing-cable reduces a loop in the cable by moving a guided arm i axially against the action of a spring d, and thus automatically adjusts the arm c of the motor controller to give the power required. To start the motor an initial tension is put on the cable by a winch on the towed boat, &c., which also may be used to slacken the cable to stop the motor. The means for effecting the control of the motor by variations in the tension of the towing-cable may be varied and may be adapted for reversing or for motors other than electric. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the controlling of the motor by the torsion of the towing-cable or by means of a rigid connection. This subject-matter does not appear in the Specification as accepted.
Patent GB-190926-A (GB)
Title: Improvements in stopping devices for runaway trucks or wagons
IPC: B61K7/22
Filed: 1922-01-17
Abstract: 190,926. Rossington, J. T. Jan. 17, 1922. Axle stops comprise a trip lever A engaged by an axle to force up a stop B which will drop clear of an axle travelling at normal speed but will engage and stop an axle travelling at abnormal speed. The lever A has a ball-shaped end c to prevent truck couplings from fouling the lever. The stop B when in action engages a support C and carries a contact E to give a signal to the engine room, &c.
Patent GB-1352823-A (GB)
Title: Combustion apparatus
IPC: F23C9/00
Filed: 1973-01-11
Abstract: 1352823 Gas turbine combustion apparatus GENERAL MOTORS CORP 11 Jan 1973 [25 Jan 1972] 1472/73 Heading F1L To reduce formation of nitrogen oxides in a gas turbine combustion apparatus 4 at least some of the combustion gases are recirculated from a downstream to an upstream region of the apparatus through an annular duct 49, Fig. 1. defined between the outer wall 36 of a doublewalled combustion liner 32 and a surrounding casing 22. The latter is itself surrounded by a casing 11 to define a dilution air duct 30 and by an outer housing 2 defining a primary air space 3. The upstream end of the combustion region is defined by a front plate assembly 19 consisting of axially spaced plates 50, 52 mounted at their centres on a ferrule 51 surrounding fuel nozzle 20. Plate 52 has angularly spaced ports (59), Fig. 4 (not shown) which can be obturated by an angularly movable valve plate 62, Figs. 1, 2, having corresponding ports 69 so as to control the flow of primary air. Valve plate 62 also has further ports 63 which co-operate with, but do not throttle air-flow through, corresponding ports 60 in plate 52. The primary air-flow after passing through the control ports flows radially outwardly in the space between plates 50, 52, over an intermediate ring 76 supported from plate 50 by fins 77, 78, Fig. 5, and thence into angularly spaced tubes 80 containing liners 94 supported by brackets 95. The downstream ends of tubes 80 open into an annular manifold 34 which has apertures (88, 90, 91), Fig. 3, 6 (not shown) discharging primary air into duct 40 defined between the walls 36, 38 of combustion liner 32. An annular nozzle 42 at the downstream end of the latter discharges the primary air, the curved portion 35 of wall 36 tending by virtue of the Coanda effect to cause the air to flow into recirculation duct 49 together with entrained combustion gases. The latter are cooled as they flow forwardly by heat exchange with primary air in duct 40 and with dilution air which has flowed into duct 30 through ports 27, 28 in casing 11. The recirculated mixture of cooled gases and primary air flows through the spaces between adjacent tubes 80 and into the area of fuel nozzle 20 so as to reduce the oxygen concentration and temperature in the combustion zone and thus the formation of nitrogen oxides. The combustion gases which are not recirculated leave through outlet 7 and are cooled by dilution air entering from duct 30 through ports 100. Means may be provided to control air-flow through the latter. To improve heat transfer, surfaces of plate 50, tubes 80, walls 36, 38 and casing 22 are roughened by etching nets of intersecting grooves (98), Fig. 13 (not shown). Casings 11, 22 are supported within housing 2 by angularly spaced pins 16 with provision for thermal expansion. Spacing ribs 31, 39 are provided on casing 22 and wall 38 respectively.
Patent GB-791801-A (GB)
Title: Improvements in or relating to type-printing arrangements
IPC: B41J7/02
Filed: 1954-05-20
Abstract: 791,801. Typewriters. SAXBY, R. N. Aug. 19, 1955 [May 20, 1954], No. 1517/56. Divided out of 791,800. Class 100(4) A type-printing mechanism comprises electromagnets 11, armatures 12, and a mechanical linkage 18, 19 directly associated with the type-levers 10. The electromagnets are operated from contacts 36, 46 fitted below keys 38, or from a computing machine. They are arranged in several banks and each bank is arcuately arranged, the position of the electromagnets of any bank being offset with respect to those in other banks in order to prevent fouling between the mechanical linkages. The type-lever is of tubular construction and is attached to a spring biased hook-shaped plate 22 which pivots about a spindle 24 and whose hooked portion 21 is in engagement with a slotted head 20 of the mechanical linkage 19.
Patent GB-818952-A (GB)
Title: Apparatus for use in controlling a rolling mill
Inventor: GREEN REGINALD
IPC: B21B37/64
Filed: 1957-01-15
Abstract: 818,952. Rolling mill controlling apparatus. UNITED STEEL CO'S Ltd. Jan. 13, 1958 [Jan. 15, 1957], No. 1520/57. Class 83 (4). [Also in Group XXXVIII] Apparatus for the automatic estimation of the optimum draft (or reduction in thickness) pass by pass in a rolling mill uses a computer fed with signals corresponding to the load on the mill rolls and draft on one pass and permissible load on the next pass. The computer solves the equation where #h 2  = draft on second pass, P 2  = permissible load on mill on second pass, P 1  = load produced on first pass, #h 1  = draft produced on first pass, K = a constant for a particular rolling mill with fixed rolling practice. The output signal of the computer may bring about automatic adjustment of the mill roll gap.
Patent GB-304026-A (GB)
Title: Improvements relating to albums, books and temporary binders
IPC: B42F13/00
Filed: 1928-01-17
Abstract: 304,026. Chapman, W. T., (trading as Chapman & Sons). Jan. 17, 1928. Label holders.-Relates to albums, books, and temporary binders of the kind having an opening or window, through which is displayed a removable tablet bearing indexing or distinguishing matter. The opening or window c, Figs. 1 and 4, is formed at the back of the album, and behind it is secured a piece of sheet material h, Fig. 3, between which and the opening, a tablet d is inserted, a slit e being formed in the back to allow of the insertion of the tablet. A piece of transparent material g is arranged behind the opening to protect the tablet.
Patent GB-1340781-A (GB)
Title: Mounting mechanisms for friction weheel measuring devices
IPC: G12B9/08
Filed: 1971-01-13
Abstract: 1340781 Measuring devices PRIMUS MFG Inc 13 Jan 1971 [9 Feb 1970 27 Aug 1970] 1564/71 Heading B3B A mounting mechanism for a friction wheel type measuring device 1 in which the wheel 6 is drivingly engaged to indicator dials 8 and 9 comprises a first part 12 having guide means on which to mount the measuring device, a second part 13 adaptably secured to a support for attachment to a lathe carriage 2, the parts 12 and 13 being displaceable relative to each other in a substantial parallel movement in a direction substantially normal to the surface to be measured. The parts 12 and 13 between them form a cavity 24 in which is diagonally located a flat steel spring 23 the opposite ends of which engage and locate in diagonally opposed corners of the cavity, the parts being retained in an equilibrium position by spring plates 21 which interconnect the parts. The part 12 is provided with a dovetail slot in which the measuring device is adjustably secured and a yoke member 26 secured to the part 12 and engageable by a screw 25 with the body 5 of the measuring device effects displacement between the parts 12 and 13 by deflection of the side springs 21 and controlled buckling of the spring 23 which acts as a simple column. The buckling of the spring 23 permits an accurate control of the pressure between the friction wheel 6 and the measuring surface 7 with which it is in contact, the deflection of the buckled spring being visually indicated in relation to the cavity 24. The attitude of the apparatus to the measuring surface may be adjusted by screws 19 in a support assembly 16, 18 attached to the lathe carriage 2.
Patent GB-553117-A (GB)
Title: Improvements relating to exhaust-driven turbo superchargers for internal combustion engines
IPC: F02D9/00
Filed: 1942-02-10
Abstract: 553,117. Controlling pumps. HOBSON (AIRCRAFT & MOTOR) COMPONENTS, Ltd., H. M., and STOKES, P. H. Feb. 10, 1942, No. 1746. [Classes 7 (ii) and 7 (vi)] [Also in Group XXIX] To prevent an exhaust-driven turbo-compressor used for supercharging an aircraft engine from exceeding a limiting speed, due to falling-off of exhaust back-pressure above a certain altitude, means are provided for automatically preventing further increase of turbine speed at altitudes above the critical limit, preferably by a reduction in the amount of exhaust gas supplied to the turbine. In the form shown, the engine is supercharged at lower altitudes by an engine-driven supercharger alone, controlled by an automatic boost control comprising a capsule 31a subjected to induction-pipe pressure and actuating a servomotor 26a connected by a toggle link 25 to the throttle 14 in the induction pipe. At a certain altitude, a second boost control 31b, 26b comes into action to cause a gradual closing of a throttle 18 in the exhaust, so as to commence the supply of exhaust to the turbine of the turbo-compressor, the supply increasing with altitude until the critical limit is reached. A further capsule 47 then comes into operation to reopen the throttle 18 through a servomotor 46, which moves a pivot 45 along a slotted lever 40 connected by a bell-crank 36 to a further pivot 35 operating in a slotted lever 22 of the exhaust boost control. The lever 40 is bent so that the upper part 43 of the slot is inclined to the lower part, the arrangement being such that, before the critical altitude is reached the pivot 45 moves in the straight part of the slot and does not affect the exhaust control, but at altitudes above the critical limit, it moves in the inclined slot, so as to adjust the pivot 35 along the slot 37 and effect a gradual opening of the exhaust throttle. The turbo-compressor supplies air through a cooler to the carburetter, and the mixture is supplied to the engine by the engine-driven supercharger arranged after the throttle 14. The boost controls 26a, 26b are both connected to a pilot's lever 19. The exhaust boost control may be as described in Specification 419,113, and the capsule 47 and servomotor 46 as described in Specification 376,341.
Patent GB-196371-A (GB)
Title: Improvements in or relating to rubber, leather and other protectors for boots and shoes
IPC: A43B21/44
Filed: 1922-01-20
Abstract: 196,371. Crowley, J. S. Jan. 20, 1922. Spiked plates.-Means for securing rubber, leather and like protectors to the heels of boots and shoes comprise a spiked plate 1, Fig. 1, through the centre of which is passed a screw 9. Additional holes 12 for nails or screws may be used, and the plate may be square or polygonal instead of round, and may be a stamping, casting, or be riveted together. The device is substantially flush with the protector and acts also as a metallic tread.
Patent GB-1160504-A (GB)
Title: Improvements in or relating to Fluid Flow Control Valves.
IPC: E03C1/10
Filed: 1968-01-12
Abstract: 1,160,504. Valves in pipe connections. ALFRED WALETZKO APPARATEBAU 12 Jan., 1968 [14 Jan., 1967; 10 Nov., 1967], No. 1825/68. Heading F2G. A fluid flow control valve in a pipe connection between a supply pipe and an outlet pipe, particularly for use in apparatus where there is a danger that the supply fluid, e.g. water, may be contaminated by harmful materials introduced into the outlet pipe or apparatus which it supplies, comprises a pipe element 6 which is axially displaceable within an inlet chamber 4 so that it may be projected, as shown, against the action of a spring 17 whereby its forward end enters an opening in an outlet chamber 5, wherein it is sealed by a seal 22, to interconnect the two chambers, and which is also adapted to engage, by means of a conical face 10 at its upper end, a valve member 7 which is axially movable to a limited extent so as to close off the interior of the element 6 to fluid flow in all positions of the element 6 except its fully projected position. Displacement of the pipe element 6 is preferably effected automatically in accordance with inlet pressure, as shown, by forming a piston 12 integrally with the radial portion of the element 6 which provides the face 10 whereby, as inlet pressure increases the valve element 7 and piston move downwardly (as shown in Fig. 1) together until element 7 contacts a stop screw 8 on the end of a rod 9 on which it slides, after which the interior of the pipe element 6 is opened to permit fluid flow. A spring (not shown) may act on the valve element 7 to assist it in following movement of the piston. Alternatively, the pipe element 6 may be displaced manually or by an electromagnet. A non-return valve 35 is preferably provided in the outlet chamber 5. The piston 12 shown in Fig. 1 is without sealing rings to ensure free movement, liquid passing the piston being directed to a drain pipe 20 which is preferably arranged vertically (Fig. 2 not shown), the pipe element 6 thus being inclined. In the embodiment of Fig. 3, however, a diaphragm 31 is used with a cup-shaped piston 30 so that the inlet chamber is sealed, the operation otherwise being similar to that of Fig. 1 excepting that the valve element 7<SP>11</SP> is secured to a rod 9<SP>1</SP> which is slidable within a sleeve 39 between limit stops 39<SP>1</SP> and 39<SP>11</SP>. Also in this construction, a second inlet 33 is provided for adding a chemical to the liquid in the outlet chamber. Fig. 4 shows a further embodiment, similar to that of Fig. 1, excepting that the forward end of the pipe element 6 is guided by means of a plate 38 carrying pins (40, Fig. 5, not shown) which can enter bores in the casing of the outlet chamber, springs being disposed around these pins to perform the function of the spring 17 in Fig. 1.