baber/WOPTO huggingface dataset:
Patent GB-835950-A (GB)
Title: Melt spinning process
Inventor: SPEAKMAN RAYMOND HOLDEN
IPC: D01D1/09
Filed: 1957-08-26
Abstract: <PICT:0835950/IV (a)/1> In melt-spinning, the pressure drop between the points of entry to, and exit from, the spinning pack is kept substantially constant for a prolonged period of time by passing the melt through a pressure zone in series with the spinning pack, the pressure drop across the melt in said zone being controlled so that the sum of the pressure drops across the pressure zone and the spinning pack remains substantially constant.  Suitable apparatus comprises a pump for pumping melt to the spinning pack via an orifice in series with the pack, and a pressure means controlling the size of the orifice by virtue of the pressure exerted thereon by the melt coming from the pump, so that as pressure builds up in the pack the size of the orifice is increased.  As shown (Fig. 1), a pack body 1 contains an open-ended cylinder 2 partly immersed in the filter 3 and supported on a porous plate 4 above distribution plate 5.  A piston 6 in the cylinder 2 is supported on a spring 7 and a port 8 communicates between the upper portion of cylinder 2 and the space 9 above the filter.  The spring 7 acts through piston 6 against the flow of melt from the pump (not shown) with a thrust substantially equal to that developed by the pump.  When the pump is not working piston 6 closes port 8, but when the pump is in operation the flow of melt forces down piston 6, opening port 8 so that melt flows through the pack.  The thrust P developed by spring 7 is balanced by the sum of the pressure drops p1 across the entry point of the inlet to the port 8 and the pressure drop p2 across filter 3.  At the start of spinning p2 is comparatively small and p1 large.  As p2 increases with time, due to blocking of the filter 3, the thrust P tends to increase and spring 7 compresses further, thus further opening port 8 and so reducing the pressure drop p1 so that the relationship P=p1+p2 still holds.  For this to occur the spring must be of such length that, when port 8 is fully open, the total thrust developed by the spring is still substantially P. Fig. 2 shows a modified apparatus which compensates for the increase in thrust of the spring 7 as said spring is compressed. The piston 10 is provided with a shoulder 11, and ports 12, 13 provide access between the upper narrow portion 14 of the cylinder and the lower wider portion 15 and space 9 above filter 3.  As p2 rises, the thrust on the piston shoulder increases and the spring compresses, thus further opening port 12.  Port dimensions and spring characteristics are so chosen that the reduction in pressure drop at the port 12 (p1) will be equal to the increase in p2.  Thus the thrust on the piston remains substantially constant and a shorter spring may be used. Fig. 3 shows an equivalent construction to Fig. 2, in which the piston and port are replaced by a needle valve 16 and the shoulder 11 of Fig. 2 is replaced by the sloping flanks of the needle.  The apparatus is particularly suitable for the melt-spinning of filaments and tows of polyethylene terephthalate.
Patent GB-463555-A (GB)
Title: Improvements in door springs
IPC: E05F1/10
Filed: 1935-09-30
Abstract: 463,555. Torsion springs. LILLY, J. Sept. 30, 1935, No. 26911. [Class 108 (iii)] [Also in Group XXV] A door spring S stressed torsionally, engaged at one end with a bracket A secured to the door and at the other end with a bracket D secured to the door frame, is provided with self-locking means for adjusting the stress of the spring comprising a worm and worm-wheel mechanism housed in the bracket A, which is made in two halves together forming a bearing for the worm C. The worm has a projecting head for operation by hand or by a tool, and the worm-wheel, housed between the two parts of the bracket A and rotatable in bearings in these parts, is non-rotatably engaged with a member fixed to the end of the spring S. The spring may be arranged to open or close the door. According to the Provisional Specification a steel rod may be used in place of the coil spring, and the spring may act on an arm bearing on the door instead of being attached to the door.
Patent GB-1063949-A (GB)
Title: Improvements in or relating to gas diffusion electrodes for electrochemical generators
IPC: H01M4/86
Filed: 1965-06-24
Abstract: 1,063,949. Fuel cells. COMPAGNIE GENERALE D'ELECTRICITE. June 24, 1965 [July 30, 1964], No. 26915/65. Heading H1B. A gas diffusion electrode is made from a sintered mass of small metallic salts and has a catalyst layer thereon. A tube for gas supply is also provided and advantageously may act as the electrical conductor. A bi-polar electrode having an impervious metallic sheet between the anode and cathode is also disclosed. A currentcarrying metallic mesh can be incorporated.
Patent GB-1245036-A (GB)
Title: Improvements in or relating to the preparation of catalysts
Inventor: JORGENSEN MOGENS HOLGER
IPC: B01J23/80
Filed: 1969-05-28
Abstract: 1,245,036. Hydrogen from carbon monoxide and steam. H. F. A. TOPSOE. 2 March, 1970 [28 May, 1969], No, 26929/69. Heading CIA. [Also in Divisions B1 and C2] Hydrogen is produced from carbon monoxide and steam by the water gas shift reaction, the process being characterized by the use of a catalyst comprising a mixture of compounds of copper, zinc, chromium and oxygen and formed by dissolving a water insoluble copper compound in chromic acid, reacting with a suspension of zinc oxide and roasting in the presence of ammonia. The shift reaction may be carried out at 150‹ C. or above, a temperature of 200‹ C. being used in the example (Example 5).
Patent GB-1142103-A (GB)
Title: Improvements in and relating to couplings for tensile members in prestressed concrete units
IPC: E04C5/16
Filed: 1967-06-12
Abstract: 1,142,103. Coupling. HELD & FRANCKE BAU., A.G. 12 June, 1967 [2 July, 1966], No. 27055/67. Heading DIT. A coupling for tensile members 3 in prestressed concrete units 1 comprises an anchoring plate 6 surrounding the sheath end of the stressed tensile member 3 and having secured to it a first anchoring ring 5 with a frustroconical inner surface, the ring forming a stop of the multi-section cone-shaped anchoring wedge 4 clamping the tensile member. A second anchoring ring 5' with an associated anchoring wedge 4' is disposed on the end of a free tensile member, 7 to be connected to the stressed tensile member 3. A coupling shell 11 is provided to engage by means of extensions 14 into recesses 13 formed in the anchoring rings 5 and 5'. The coupling shell 11 can be unitary, see Figs. 3 to 10, not shown, or in two parts held together by bolt 16. With the unitary construction the extensions (34). and the recesses. (33) are each circumferentially discontinuous with portions spaced from one another in both the coupling shell and anchoring ring parts so that the anchoring ring can be passed through the end of the splice shell and turned so as to locate it in position. These discontinuous extensions and recesses of the shell and ring respectively can be formed with raised and recessed portions (52, 53) on adjacent faces which intermesh when the anchoring ring is turned to locate it in the splice, shell, see Figs 7-to, not shown.
Patent GB-657513-A (GB)
Title: Improvements in or relating to the loading of road vehicles on to rail vehicles
IPC: B60P1/64
Filed: 1948-10-18
Abstract: 657,513. Loading road vehicles on to rail vehicles; screw jacks. COMMER CARS, Ltd., SMITH, A. J., WHITE, C. H., ULSTER TRANSPORT AUTHORITY, and COURTNEY, J. Oct. 18, 1948, No. 27067. [Classes 78 (iii) and 78 (iv)] In a combination of a road vehicle and a rail vehicle for carrying it, in which the rail vehicle provides a platform on to which at least one pair of road wheels adjacent one end of the road vehicle may be run in a direction transverse to the rail vehicle, and in which the combination provides means whereby the other end of the road vehicle may be supported and swung laterally over the rail vehicle to bring the vehicle in line, is characterized in that the rail vehicle has a turntable on to which the said road wheels are run and which may then be rotated during the swinging operation. As shown in Figs. 1 and 2 the rail vehicle comprises a four-wheeled truck 11 having a flat well 12, part of which is formed by a turn-table 13 having an extending portion 14 adapted to overlie the gap between the truck and a fixed ramp or platform. The rear wheels of the semi-trailer shown may be run up the ramp and over the portion 14 of the turn-table 13 to be guided by a ramp 14a so that automatic latches 15 on the turn-table engage the axle of the semi-trailer when it lies over the axis of the turn-table. The front of the semitrailer when detached from its tractor is supported by pairs of jockey wheels 17 which may be fixed with their axes intersecting the axis of the turn-table 13 or may castor. The jockey wheels may be driven by a detachable handle on the shaft of a worm shown in Fig. 4, the worms for the two pairs of jockey wheels being coupled by a shaft 22, or by power means. When the jockey wheels are so driven the semitrailer is turned about the axis of the turntable 13 until the semi-trailer lies wholly upon the rail vehicle, as shown in Fig. 1. Hinged bridge-plates 16 on the rail vehicle facilitate this movement. When in position on the rail vehicle the semi-trailer is held by automatically engaging catches 25 (Fig. 1) and the weight of its forward end is transferred to a jack 26. As shown in Fig. 4, the axles 18 supporting the jockey wheels 17 may be retracted by manuallyoperated jacks 19. U.S.A. Specification 1,968,196 is referred to.
Patent GB-1417256-A (GB)
Title: Silencer
IPC: H01H33/58
Filed: 1973-06-06
Abstract: 1417256 Exhaust silencers BROWN BOVERI & CIE AG 6 June 1973 [5 Aug 1972] 27057/73 Addition to 1358775 Heading F1B [Also'in Division H1] A silencer for use with a gas-blast circuit breaker comprises a cup-shaped rubber-elastic diaphragm 1 provided with two contiguous strata 3, 4 and formed with a plurality of funnel-shaped apertures 2 in the underside region of a bulbous projecting annular portion 12, the apertures in the two strata being offset with respect to one another and the strata being so constructed that they lift from another by an amount b, Fig. 3, to permit the relatively slow escape of blast gas, via the tortuous paths 6, from the outlet 20 of a discharge valve 18 which is enclosed by the diaphragm. The apertures are arranged in recurring groups spaced as in Fig. 4 (not shown) and each aperture has a rounded bead on the gas-entry side to improve gas flow. In Fig. 1 the diaphragm has an outwardly tunnel flange 10 for bolting to a support ring 22 and in an alternative embodiment, Fig. 2 (not shown), the bulbous projection is of a different shape and the rim of the diaphragm is attached directly to a collar on the support ring. Resilient expansion of the diaphragm as a whole initially absorbs energy from the gas discharge before the strata separate to allow gas release through the apertures 2 and in addition to attenuation decrement provided by the strata overall sound attenuation is achieved in a logarithmic manner from the overlap of the individual sound sources constituted by each aperture. The inner stratum 3 is heat resistant and the outer stratum 4 is resistant to bolt weather and atmospheric pollution.
Patent GB-628721-A (GB)
Title: Improvements in or relating to electric air heating devices
IPC: F24H3/04
Filed: 1947-10-09
Abstract: 628,721. Unit air heaters. DELANEY, C. T., and GALLAY, Ltd. Oct. 9, 1947, No. 27160. Drawings to Specification. [Class 137] [Also in Group XI] The subject-matter of this Specification is substantially the same as that described in Specification 628,720, but the claims differ. In particular the unit air heater described in this Specification does not have a hollow outer wall providing a passage for cooling air, but has a rotary switch disposed beneath the lid of the device, a carrying handle being secured to the switch spindle which is vertical, and an inverted conical plate is arranged below the switch to deflect air to the outlet louvres and away from the switch. Four switch positions are possible.
Patent GB-502240-A (GB)
Title: Landing hook for aircraft
IPC: B64C25/68
Filed: 1938-09-19
Abstract: 502,240. Landing-hook for aircraft. ARADO FLUGZEUGWERKE GES. Sept. 19, 1938, No. 27227. Convention date, Oct. 13, 1937. [Class 89 (ii)] A landing-hook for aircraft, adapted to engage a cable stretched transversely of the direction of flight, comprises three parts 1, 2, 3 normally locked to one another in the open position, Fig. 1, the parts 1, 2 being released by engagement with the cable to close around it and remaining closed until the lock between the parts 2, 3, is released, whereupon the action of the cable causes the parts to move to open position to release the cable. The part 1 is pivoted to the part 2 at 4 and is normally held in the open position by a spring-pressed catch 5 releasable by a trigger 6. A pivot 17 connects the parts 2,3 which are normally locked together by a spring-pressed bolt 11. When the cable strikes the hook it engages the trigger 6 and releases the catch 5 -and then moves against a nose 14 on the part 1 causing the hook to close. To release the cable, the bolt 11 is manually retracted by means of a rope 12 whereupon the cable causes the parts 1, 2 to turn about the pivot 17 against the action of a spring-pressed plunger 13 and the part 1 opens so as to allow the cable to drop out of the hook.
Patent GB-1314382-A (GB)
Title: Drivable conveyor for passsing on crop ejected from the threshing  concave of a combine harvester
IPC: A01F12/44
Filed: 1970-06-05
Abstract: 1314382 Crop conveyors DEERE & CO 5 June 1970 [7 June 1969] 27242/70 Heading A1F [Also in Division B8] A conveyor for passing on crop ejected from a threshing concave 12 of a combine harvester into a cleaning device (not shown) includes a conveyor platform 20 comprising a frame 27 having a first conveyor portion which receives the crop and a second conveyor portion for transferring the crop to the cleaning device. The first conveyor portion comprises a flexible sheet 32, e.g. of tear-resistant cloth or rubber or plastics material, carried by a rectangular frame 30 mounted in frame 27. The frame 30 may also include springs for tensioning the sheet 32. The sheet is preferably supported when in a relaxed position, Fig. 3 by ribs or bars 39 (or inverted skids Fig. 5 not shown) extending across the frame 30. Conveyor platform 20 is reciprocated by a drive device (not shown) to and fro and up and down via a rocker arm 24 journalled at 26 to the combine harvester frame. Sheet 32 rises and falls due to the reciprocation and crop falling therein is passed by this motion on to the second conveyor portion 28 in the form of a stepped floor which by virtue of its shape and the reciprocation passes the crop on to the cleaning device.
Patent GB-887928-A (GB)
Title: Improvements relating to the jointing of electric cables
IPC: B21D39/00
Filed: 1960-08-05
Abstract: 887,928. Jointing electric cables; soldering; tube expanders. COMPAGNIE GENERALE D'ELECTRICITE. Aug. 5, 1960 [Aug. 21, 1959], No. 27249/60. Classes 83 (2) and 83 (4). A method of jointing an electric cable having an insulated conductor or group of conductors protected by a metal sheathing, involving the soldering of an end of the sheathing to a metal sleeve, is characterized in that, prior to soldering, the internal diameter of the sheathing is increased at the said sheathing end over a sufficient sheathing length to prevent the heat generated in the course of the soldering between the sheathing and the sleeve from damaging the insulation of the conductor(s) by transmission of the heat to the insulation through the sheathing. A cable insulated at 2 and surrounded by an aluminium sheathing 1 has an end of said sheathing expanded, prior to soldering a metal sheath thereto. The annular space so formed may be ventilated, packed with heat insulating materials or with a ring of metal which may be connected to a radiator to serve as a thermal screen. The expansion is effected by a hollow tool 4 pushed over the cable and under the sheathing 1. Apparatus for pushing the tool may include a clamp 9 for holding the cable and a hollow screw 15 carrying a head 17 to hold the tool. The screw 15 is advanced by a ring and pawl device 11.
Patent GB-1348615-A (GB)
Title: Force or travel measuring apparatus
IPC: G01L1/10
Filed: 1972-06-12
Abstract: 1348615 Temperature compensation METTLER INSTRUMENTE AG 12 June 1972 [23 Nov 1971] 27282/72 Headings G1N and G1W A force or length measuring apparatus includes a system of magnets for reducing the influence of temperature fluctuations on the measurement result. In Fig.1 a force P is applied via pan 4, beam 5 and spring 7 to a measuring string 8. A pair of magnets 11 and 11' are arranged with unlike poles adjacent, magnet 11' being adjustable vertically. When the temperature rises, the stiffness of string 8 decreases and its length increases, both effects reducing the oscillation frequency. However, the force of attraction between magnets 11 and 11' decreases as the temperature rises thus causing the tension in the string 8 to increase and compensate for the reduction in frequency to prevent zero drift. A second system of magnets 13 includes a pair of magnets 14, 16 arranged to attract each other and a pair 14', 16' arranged to repel each other, the magnets 16, 16' being adjustable vertically. The magnet system 13, which is intended to linearize the frequency-load characteristic of the string 8, is said to be virtually temperature independent in its linearization effect. By making the separations of magnet pairs 14, 16 and 14', 16' unequal, the variation of the sensitivity of the string with temperature may be compensated for. In Fig.2, a spring balance includes a pair of magnets 21 mounted on the spring 18 and arranged to be attracted by magnets 22, 22' which are adjustable vertically. The magnets 21, 22, 22' compensate for variations in the spring constant of the spring 18 with temperature. A simpler form of spring balance is shown in Fig.3 (not shown) in which a single pair of horizontal aligned magnets are used. The compensation magnets may be ferrite magnets.
Patent GB-461549-A (GB)
Title: Apparatus for starting internal combustion multi-cylinder engines by means of a compressible fluid under pressure
IPC: F02N9/04
Filed: 1936-10-08
Abstract: 461,549. Staging. HEYWOOD, C. F. Oct. 8, 1936, No. 27332. Convention date, May 4. [Class 7 (v)] Starting valves 6 on the engine cylinders 1 . . 4 are supplied in turn with pressure fluid from a simple form of rotary distributer 16 through pipes 12 ... 15, and compression is relieved in each cylinder on the compression stroke by opening the starting valve in that cylinder by means of a piston 20 actuated by pressure fluid conveyed by one of the pipes 25 . . . 28 branching from the pipes 12 . . 15. As shown in Fig. 2, the piston 20 has a rod 21 adapted to engage the valve stem 22, and the piston and valve are normally held in the positions shown by springs 29, 10. When the piston is moved to the right by pressure fluid admitted to the pipe 25, the valve 6 is opened by the rod 21 and a port 23 in the piston connects the valve casing 7 with the atmosphere through a pipe 24 to relieve compression in the cylinder. A diaphragm 30 having a hole 31 is interposed between the pipe 25 and the piston, and the return speed of the piston may be varied by modifying the size of the hole 31. In a modification, the pipes 24, 12 enter the valve casing 7 on opposite sides and are controlled by connected piston valves, so that only one of the pipes at a time is connected to the casing 7. A spring is interposed between the rod 21 and the valve stem to cushion the shocks. In a further form, Fig. 4, the piston 50 has parts 51, 52 of different diameters and moves in a liner 55 having ports 56 leading to the atmosphere and ports 57 communicating with the pipe 12. When pressure fluid is admitted through the pipe 12 it opens the valve 6 and is admitted to the engine cylinder. Pressure fluid afterwards admitted through the pipe 25 moves the piston 50 to the right, opening the valve 6, cutting off communication at 62 with the pipe 12, and opening communication with the atmosphere by means of ports 60, 56.
Patent GB-823414-A (GB)
Title: Improvements in or relating to upholstered furniture
IPC: A47C31/11
Filed: 1956-09-07
Abstract: 823,414. Upholstery. MINTY Ltd., and BOWLES, W. R. Sept. 6, 1957 [Sept. 7, 1956], No. 27517/56. Drawings to Specification. Class 52(4) Detachable arm-rest pads for upholstered chairs &c. are constructed to cover the front, top and rear surfaces of the arm rest. The separate sections may be stiffened by backing boards and the cover is preferably detachable.
Patent GB-1195145-A (GB)
Title: Surgical Instrument
IPC: A61B17/42
Filed: 1968-06-10
Abstract: 1,195,145. Surgical instruments. HOLLISTER Inc. 10 June, 1968 [26 July, 1967], No. 27573/68. Heading A5R. A one piece surgical instrument 10 suitable for rupturing an amniotic membrane comprises an elongated member having a blunt surface on one end 14 of the member, an integral hook portion extending sidewardly from the member adjacent to the blunt surface, the hook terminating in a curved pointed end which is directed away from the blunt surface, and a handle portion 16 extending from adjacent to the hook to the opposite end of the member. As shown, the instrument, which is formed from a synthetic plastics material, is at elongate tapering form. and is straight, or may have a slight bend or bow, and the handle portion 16 is flat or oval in cross-section. An arrow 22 on the handle portion corresponds to the orientation of the hook. The instrument may be provided sterile within, a package 24 (Fig. 8, not shown) having a tear strip longitudinally or at one end of the package, or the instrument may be provided sterile within a package which is a tube having a cap.
Patent GB-339634-A (GB)
Title: An improved soil drainage device or well-point
IPC: E03B3/12
Filed: 1929-09-11
Abstract: 339,634. Moore, T. F. Sept. 11, 1929. Divided on 339,632. Sinking by jetting. - A wellpoint for drawing water bearing soil to facilitate excavation comprises a valve case 8 with a polygonal upper end and a tapered circular lower end in which a nozzle section 9 is fixed by a pin &c. 10 ; float valves 6, 7, control ports 11, 13 in the part 9 and the upper wall 12 of the part 8 respectively. The valve case is secured to a straining member as in Specification 339,632. Water forced through pipe 2 and past valve 6 facilitates insertion of the device in the ground.