baber/WOPTO huggingface dataset:
Patent GB-1098768-A (GB)
Title: Control of automatic abrading machines
Inventor: ESTABROOK MARK R
IPC: B24B33/06
Filed: 1966-08-16
Abstract: 1,098,768. Honing. BARNES DRILL CO. Aug. 16, 1966, No. 36659/66. Heading B3D. [Also in Division H2] An abrading machine comprising (i) a tool having one or more movable abrading elements, (ii) mechanism for feeding said element(s) into engagement with a work surface, and (iii) a variable speed and torque electric motor for driving said feeding mechanism to feed said element(s) into said surface at different rates determined by the speed of operation of said motor, is characterized by the provision of a control for said motor including a resistor having an impedance that increases sharply with increases in current through the resistor, said resistor being connected in series with the armature of said motor, whereby the terminal voltage of said motor is reduced as the resistance to feeding of said element(s) increases and the current drawn by the motor through said resistor increases to raise its impedance. In a machine for housing a bore, rapid expansion and contraction of the tool at the beginning and end of the honing cycle are effected by a reversible electric motor 35 driving, through gearing 37, a shaft 32 actuating the expanding mechanism. Expansion of the tool during honing is effected by an electric motor 25 driving the shaft 32 through worm gearing 26, 27, worm gearing 30 and a clutch 31 which is disconnected during operation of the motor 35. The motor 23 may be a 1/150 H.P. shuntwound D.C. motor fed by 90 v. D.C. An incandescent lamp 42 having a tungsten filament is in series with armature 38 on the positive side. A rheostat (44, Fig. 5) may be connected in parallel with the lamp. Alternatively the field strength of the motor may be adjusted by a voltage divider (48, Fig. 6).
Patent GB-431386-A (GB)
Title: Improvements in or relating to screens, trays, guards and the like
IPC: B07B1/48
Filed: 1933-12-30
Abstract: 431,386. Screens. FISH, K. R. G., 45, Hatton Park Road, Wellingborough, Northamptonshire. Dec. 30, 1933, No. 36707. [Classes 45 and 46] [See also Groups II, VI, VII, X, XI, XV, and XX] Relates to means for fastening sheet material in a frame and is described in connection with a rectangular wire gauze window-screen, but the invention is applicable to screens or sheets of any shape and material, for example, muslin net, perforated zinc or other metal, cotton, silk, linen, or canvas, and for various purposes such as mosquito screens, hand or machine sieves, cinema screens, paint straining trays, biscuit trays, filters, fire-guards, machinery and other guards. The gauze &c., 4 is held on the relatively wide faces 3 of the frame 1 by clamping strips 5, or a clamping frame, having a flange 5b which bends the gauze over the inner edge of the screen frame 1 so as to tighten it between opposite sides or ends, or both sides and ends of the frame. As shown, clamping strips 5 are of channel section and the outer flange 5a takes over an edge of the gauze bent down over the outer edge of the frame 1. The faces 3 of the frame may be rounded or of other cross section, the clamping strips or frame being formed to suit. Corner caps 7 are provided overlapping the ends of the clamping strips at 7a and flanged at 7b to overlap the outer edges of the gauze. The caps are formed with central bosses 9 on the underside to bear upon the gauze. Reference has been directed by the Comptroller to Specifications 6343/97, [Class 46], 19053/13, [Class 20 (iii)], and 399,931, [Group XX].
Patent GB-361641-A (GB)
Title: Improvements in or relating to means for driving the fuel pumps of internal combustion engines
IPC: F02M39/02
Filed: 1930-12-05
Abstract: 361,641. Oil engines. MASCHINENFABRIK AUGSBURG-NURNBERG AKT.- GES., 7, Stadtbachstrasse, Augsburg, Germany. Dec. 5, 1930, No. 36778. Convention date, Dec. 20, 1929. [Class 7 (iii).] In an internal-combustion engine a fuel pump a is operated by means of a cam f on the engine crank web e acting on a lever h, pivoted on a spindle i and connected by a link j to a thrust rod k, which operates the pump plunger. A second cam f may be provided for reverse running, the lever h being moved axially by rotating and sliding the spindle i which carries a,claw for lifting the lever h off the cam. The cams f, f are secured to the crank web by screws e<1> and are circumferentially adjustable. The stroke and timing may be adjusted by means of a screw q acting on an arm h<1> of the lever h. Alternatively, the stroke of the rod k, Fig. 4, may be adjusted by means of a nut t engaging a coller s on the rod. When air injection is employed the injection valve v may be operated from a lug s<1> on the collar,s by means of a link w and lever x. In this case the engine cylinders are arranged in pairs, each cylinder being supplied with fuel by the pump of the other cylinder.
Patent GB-874660-A (GB)
Title: Improvements in or relating to thermoelectric devices
Inventor: REEMAN JAMES
IPC: H01L35/30
Filed: 1958-11-18
Abstract: 874,660. Thermo-couples. GENERAL ELECTRIC CO. Ltd. Nov. 13, 1959 [Nov. 18, 1958], No. 37076/58. Class 37. In a thermo-electric device which may be used as a generator or for refrigeration a thermocouple assembly is mounted between the walls of two coaxial metallic tubular heat-exchange members, one of which is composed of sections connected in such a manner as to permit relative movement between the sections so that the thermo-couple assembly is not strained by differential thermal expansion between the members. Suitable materials for the elements of the thermo-couples have the generic formula X2Y3, where X represents at least one of the elements bismuth, antimony, arsenic, and Y represents at least one of the elements tellurium, selenium, sulphur; e.g. bismuth telluride. As shown, Fig. 1, annular elements 3 of alternately P- and N-type material, which may be formed by sintering, are arranged coaxially, being spaced apart by insulating material 7. The inner peripheries of alternate pairs of adjacent elements are connected by conducting rings 4 and the outer peripheries of adjacent elements of adjacent pairs are connected by conducting rings 5 which comprise cylindrical extensions 6. The assembly is mounted with its inner junctions adjacent an inner tubular heat-exchange member 1 but electrically insulated from it by a thin coating 9 of insulating material; a similar coating 11 is interposed between the outer junctions and an outer tubular heatexchange member 2, which is provided with expansion joints 12 of the bellows-type to allow for differential expansion. Alternatively, the outer heat-exchange member is made up of discrete cylindrical sections spaced apart axially, the gap between sections being sealed by flexible 0-rings. Fig. 3 shows an assembly made up of elements 3 disposed between inner and outer conducting rings 4, 5 the assembly being encased in resin and the rings 4, 5 being cut at appropriate points to connect the elements in series. A number of such assemblies are mounted between inner and outer heat-exchange members and are interconnected electrically in series. When the device is used as a thermo-electric generator, steam or other hot fluid is passed through the inner heatexchange member while the outer heat-exchange member, which may be finned, is cooled.
Patent GB-1236236-A (GB)
Title: Resistance welded gas-tight tube wall
IPC: F22B37/10
Filed: 1968-08-05
Abstract: 1,236,236. Making heat exchangers; welding by pressure. L. & C. STEINMULLER G.m.b.H. 5 Aug., 1968 [4 Aug., 1967], No. 37268/68. Headings B3A and B3R. In making a tube wall from tubes having longitudinally arranged and diametrically opposed fins, adjacent tubes are fed at an angle to one another between rollers which press the edges of the fins on each tube together, the fins being continuously resistance welded together. Two outer finned tubes 2, 3, Fig. 1, are fed together with a central finned tube 1 between rollers 4, 5 to form continuous resistance welds between adjacent fins, the fins 8 having the initial shape as shown in Fig. 2. The welded assembly of three tubes is then used as a centre member and outer tubes are similarly welded to the outsides thereof, the rollers 4, 5 being spaced further apart for this operation. Alternatively only a pair of tubes may be initially welded to form the central member to which other tubes are welded. Upset between the fins may be removed immediately after welding.
Patent GB-1041108-A (GB)
Title: Improvements in electrostatic precipitators
Inventor: HANSEN OLE JORN
IPC: B03C3/76
Filed: 1964-09-14
Abstract: 1,041,108. Electrostatic precipitators. F. L.SMIDTH & CO.A/S. Aug. 10, 1965 [Sept. 14, 1964], No. 37486/64. Heading B2J. An electrostatic precipitator has a number of discharge electrodes 4 suspended vertically between a fixed upper suspension member, a number of which form a frame 3, and a lower tension member 7 supported only by the electrodes. Each tension member 7 is pulled upwards against a stop by resilient devices, e.g. springs 6, acting through the electrodes, and is movable downwards away from the stop against the pull of the resilient devices by intermittently-acting mechanicallyoperated hammers 11 which strike the davits. After each downward movement the hammers permit the tension member to be moved back again against the stop by the resilient devices. The stop is formed by the part of the horizontal member forming part of the frame 3 at the end of a slot 9, Fig. 4 (not shown). A number of stops may be combined in one frame. The pull of each electrode may also be produced by a corrugated length 14, Fig. 5 (not shown), of the electrode itself.
Patent GB-1355509-A (GB)
Title: Perforated drum drier
IPC: F26B13/16
Filed: 1971-08-11
Abstract: 1355509 Perforated drum driers ERICH KIEFER LUFTTECHNISCHE ANLAGEN GmbH 11 Aug 1971 [7 Sept 1970] 37727/71 Heading F4G  A perforated drum drier for drying, setting or shrinking fabric comprises an endless starter chain conveyer 9 for feeding open warp knit fabrics (or tubular knit fabrics that have been cut open), and a rotated roller 10 (or belt) for feeding uncut tubular knit fabric, wherein the lower run of the endless stentor chain conveyer 9 is tangential to the top of the first perforated drum 2, so that the fabric may be readily unpinned from the pin-studded stenter chains 17, and the tubular fabric is supplied substantially in the horizontal plane containing the axis of the drum 2. Air admitted through a fan 6 is heated by elements 5 and extracted from the perforated drums 2 and 3 by one or more fans connected to one or both ends of the drums, the pivotable part 2b of an air screen 2a, 2b being set in the full-line position for open knit fabrics and in the dotted-line position for tubular knit fabrics. Air is also vented at 7. The fabric may be preheated and moistened by a steamer 19 for setting the fabric. A spreader 11 and a shrinking roller 11 is provided for tubular knit fabric which is passed through an opening 28 (covered when not in use by a raisable shutter 29) to the drum 2. The fabric passes over a cooling drum 21 to a winding reel 22 or a folder. The stenter chains 17 and fabric 25 pass into the drier chamber 1 through a U-shaped opening 18, the chains 17 being guided by walls 24 whose relative separation may be adjusted and the opening 18 being substantially closed by spring-loaded pairs of plates 26a, 27a and 26b, 27b which bear on the walls 24. The stenter chain rollers 12 and 13 are telescopic. An operator may stand under the stenter mechanism 9 to feed the tubular fabric into the inlet opening 28.
Patent GB-1526997-A (GB)
Title: Voltage detecting circuits for power sources
IPC: G01R19/165
Filed: 1976-09-14
Abstract: 1526997 Measuring voltage DAINI SEIKOSHA KK 14 Sept 1976 [16 Sept 1975]  38034/76 Heading G1U The voltage of a power source being monitored is arranged to control the time taken to charge or discharge a capacitor to a predetermined level. In the idle state, the voltage at input terminal C is -V ss , the battery voltage which is also found at terminal 15. Field-effect transistors (FET) 6, 8 are therefore ON, FET 13 is OFF and the capacitor 16 is charged to the battery voltage - Vss, terminal 10 being at 0 volts. Inverter 17 thus has FET 18 ON and the inverter 20 output G is a logic zero. A positive pulse input C (to zero volt level) switches the FET's 6, 8 OFF and 7, 11, 13 come ON. Capacitor 16 now discharges through FET 13 at a constant rate determined by the gate-source voltage thereof which itself is only dependent on the terminal voltage -Vss. After a time T, the voltage at E rises sufficiently to switch the inverter 17 raising the inverter 20 output to logic one. A predetermined time To after the input pulse at C, the input H goes to logic zero. Thus if T < To, ie the capacitor discharges at a high rate owing to a sufficiently high terminal voltage, the output of NOR gate 21 remains low. If, however, T > T o  a pulse is emitted from the NOR gate and bi-stable 22 is set, thus providing an alarm. In a modification, Figs. 7 - 8 (not shown), three NOR gates are provided, with three different values of To, to give a graded indication of the terminal voltage. In a second modification Figs. 5, 6 (not shown) the second input to the NOR gate is a group of clockpulses delayed by a predetermined time (T 1 ) from the input pulse. The NOR gate output feeds a counter whose content thus gives a quantitative assessment of the low terminal voltage. Effects of temperature on the inverter 17 may be compensated by temperature effects on the conductive constant of FET 13, to provide substantial temperature independence.
Patent GB-850733-A (GB)
Title: Magnetoabsorption methods and apparatus
IPC: E21B47/09
Filed: 1956-12-13
Abstract: 850,733. Electric tests. VARIAN ASSOCIATES. Dec. 13, 1956 [Dec. 22, 1955], No. 38129/56. Addition to 834,010. Class 37 The apparatus described in the parent Specification for investigating matter by its R.F. absorption in the presence of a slowly varying magnetic field, is now directed to measuring stress, the thickness of material and the presence of contaminants in oil. Fig. 1 shows an arrangement in which an oscillating detector supplies an R.F. field at a frequency of e.g. one megacycle/second which is applied axially to a wire and stressed by a weight W. A low frequency magnetic field is provided by a sweep generator 5 which also provides the horizontal deflection signal for an oscilloscope 7. The output of the oscillatory detector is a voltage proportional to the amplitude of the oscillations. Fig. 1A shows the waveform on the oscilloscope produced by an unstressed specimen and 1B that produced by a stressed specimen. An arrangement of the type already described may be lowered into the lining of a bore hole (Fig. 5, not shown) to determine the point at which the lining is jammed. The tube is stressed from the surface and a sudden reduction in stress occurs as the apparatus passes the point where the bore is jammed. A similar apparatus may be used to measure the thickness of non-ferrous plating on a ferrous object (Fig. 4, not shown) or to test the homogeneity of a body which is passed near to it such as a pole piece (Figs. 2, 2a, not shown). Fig. 3 shows an arrangement in which sweep coils 3, 4 and R.F. coil 2 are housed in a circulating oil system to detect metal particles in the oil. The output of the oscillating detector is fed via a phase-sensitive 2 amplifier 22, which also receives a reference signal from sweep generator 5, to an indicator 23. If the R.F. coil is at right angles to the sweep coil torque may be measured (Fig. 7, not shown) and the torque output may be multiplied by an output proportional to shaft speed to give an output indicative of power. A circuit is described with reference to Fig. 10 (not shown) in which an oscillating detector gives an output indicative of R.F. absorption as the low frequency magnetic field varies. A small condenser in series with the grid of the oscillating valve prevents transmission of the sweep frequency oscillations to the "y" plate of the oscilloscope. The circuit is identical to that described with reference to the parent Specification.
Patent GB-836267-A (GB)
Title: Means for prestressing concrete pipe
Inventor: HUBBARD STEPHEN R
IPC: B65H59/38
Filed: 1957-12-09
Abstract: 836,267. Winding wire on pipes. CEN-VIRO PIPE CORPORATION. Dec. 9, 1957, No. 38185/57. Class 83 (4). [Also in Groups XXVIII and XXXV] A machine for winding wire around a concrete pipe includes spaced wheels for supporting and rotating the pipe, means for supplying wire under tension to the pipe, means for moving the wire longitudinally of the pipe during winding so as to impart a pitch to the wound wire, the means driving the pipe rotating wheels and the means driving the wire moving means being so electrically interconnected that their speeds may be altered while keeping the ratio of such speeds constant. A concrete pipe 80 is supported and rotated by rubber wheels 48 and 49 driven, through gearing, by an electric motor 38 incorporating an eddy current clutch. To position the pipe 80 on the wheels 48, 49 it is first loaded on to and then rolled along rails 75, Fig. 3, on to rolls 74. It is then moved to the left or right for proper alignment longitudinally of the machine and then rolled off on to a support frame 64. An hydraulic cylinder 56 then lowers the frame 64 to deposit the pipe on the wheels 48, 49. A beam 95, adjustable vertically by lead screws 106, carries pipe-engaging roller assemblies 116, 117, 118, each comprising two pairs of rolls, and roller assemblies 131, 132, each having a roll 149 engaging the end of the pipe and each being adjustable along the beam 95. A carriage 213, supporting a capstan 235 around which wire 220 from a spool (not shown) passes for a few turns before passing to the pipe 80 to which its free end is connected, is moved along rails, longitudinally of and above the pipe 80, by an electric motor 236, incorporating an eddy current clutch, on the carriage 213 and driving a pinion 240 engaging a fixed chain 241. The capstan 235 is driven by an electric motor 227 through an eddy current clutch 231 to provide a torque opposing the rotation of the capstan when it is rotated by the pipe 80 pulling the wire therefrom. The field excitation of the clutch 231 may be varied by a potentiometer to alter the wire tension. The motor 227 and clutch 231 also maintain wire tension when the rotation of the pipe 80 is stopped. The eddy current clutches of the motors 236, 38 are arranged in cascade relation with the motor 38 as the master and the motor 236 as the slave so that the speed ratio of the output shafts of the motors is maintained constant. This ratio is adjusted by two potentiometers and the speeds of both motors by a third potentiometer. When winding a bell-shaped end 81 of the pipe 80 a helical ridge is cut thereon by a circular saw on a carriage supported by a sleeve 153 slidable along a shaft 152 on the beam 95. As the wire 220 approaches the end 81 of the pipe the saw is lowered into contact with the pipe and the wire being wound moves the saw axially of the pipe. Alternatively the pipe may be cast with the end 81 formed with spiral steps.
Patent GB-1076344-A (GB)
Title: Improvements in or relating to electric circuit arrangements for use in telecommunications systems
IPC: H04Q3/00
Filed: 1965-09-08
Abstract: 1,076,344. Automatic exchange systems. SIEMENS A.G. Sept. 8, 1965 [Sept. 9, 1964], No. 38288/65. Heading H4K. A marking arrangement for a line selector of uniselector type comprises a multi-winding transformer K1, K2 ... for each decade, and tens and units marking switches Wr1, Wr2 of which the former marks the secondary winding of the appropriate transformer, while the latter marks corresponding primary windings of all the transformers. Thus, when A.C. is applied to the primary windings an output is obtained only when the selector reaches the marked line in the correct decade. The marking equipment ES may control several selectors in timemultiplex fashion. The arrangement may be used for marking multi-line, e.g. PBX, groups, the lines of which are not necessarily contiguous.
Patent GB-1394529-A (GB)
Title: Control for vehicle
IPC: F16H63/24
Filed: 1973-08-14
Abstract: 1394529 Regulating engines CATERPILLAR TRACTOR CO 14 Aug 1973 [21 Aug 1972] 38499/73 Heading FIB [Also in Division F2] An elongate control member 12 in a vehicle such as an earth mover is rotatable about its longitudinal axis 17 to effect control of engine speed and about a transverse axis 15 to operate gear selector means. The lower end of the member 12 carries an arm 52 connected by a link 53 with an arm 57 on a shaft 58 which carries an arm 59 connected to a governor control rod 14. Rotation of the member 12 to actuate the rod 14 over-rides a governor locking mechanism 61. The member 12 is rotatable in bearings 38 in a yoke 37 which is movable about an axis 16 to engage either a portion 31a of a lever 31 or a portion 32a of a lever 32, both levers 31, 32 being connected to the gear selector means through linkage 34, 36, 26, 29, 13.
Patent GB-1024570-A (GB)
Title: Improvements in ships accommodation ladders
IPC: B63B27/14
Filed: 1964-09-22
Abstract: 1,024,570. Ships' ladders. A. M. THOMSON. Feb. 18, 1965 [Sept. 22, 1964], No. 38599/64. Heading A6L. A light alloy ship's accommodation ladder, which can also act as a shore gangway, is pivotably connected at its upper end to a rotatable platform 8 fixed to a pivotable post 5 which also carries a davit 7 from which the ladder is supported. The ladder, which may have a lower section, (not shown), hinged or telescopically fixed thereto, is clamped in position by a lateral bar 26 fixed to the top of a frame 20 fixed in turn to the ladder, which bar passes through a slot 27 in a plate 28 fixed to the guard railing 3, and has a threaded end on to which a butterfly nut is screwed. The ladder has rigid handrailing 13, and is constructed to be reversible, having connections 17 at the lower end to enable that end to be connected to the lugs 3. The ladder may be stored on a crutch, having been pivoted through 90 degrees to stretch across the deck, or it may be stored parallel to the guard-railing by turning it through 180 degrees, the platform 8 being cantilevered out over the guard-railing.