baber/WOPTO huggingface dataset:
Patent GB-823780-A (GB)
Title: Improvements relating to travelling wave electron discharge tubes
Inventor: DODDS JOHN MATHIESON
IPC: H01J25/38
Filed: 1955-03-28
Abstract: 823,780. Travelling wave tubes. METROPOLITAN-VICKERS ELECTRICAL CO. Ltd. March 28, 1956 [March 28, 1955], No. 9007/55. Class 39(1). A travelling wave tube has a helical waveguide 3, Fig. 1, traversed at a number of successive positions by an electron beam and part of the input signal drive 10 to the guide is fed to a frequency discrimminator 11 so that when the signal drive frequency varies from a nominal value a correcting signal is applied to a magnet 9 which deflects the beam to vary the positions of traverse, in such manner as to maintain the velocity modulation in phase with the guide field. The guide may be of ordinary helical shape but as shown is a helix with rectangular turns, 3 sides of the rectangle being perpendicular to the axis and the fourth side sloping. The axial slope of the turns can be uniform or non-uniform. The beam slots 8 which may be of constant length but are preferably of increasing length along the beam path, are in one of the said three sides so that the beam goes through the guide at right angles thereto. For operation on a fixed frequency the electron velocity is adjusted so the beam traverses the parts of the guide in correct phase. The electron transit time between gaps is 1 Œ n#g where Vp 1 = length of guide between gaps #, #g is guide wavelength, Vp is phase velocity, n = o or any integer. If the drive frequency alters, #g and Vp change, the automatic alteration of the position of traverse of the beam by magnet 9 altering the guide lengths between successive interactions to keep the phasing right for the new frequency, e.g. path A can be altered to B or C. Alternatively the drive frequency can be controlled by a voltage which can also control the magnet through an amplifier or suitable network. The device may be pulsed, may amplify frequency or amplitude modulated waves or may be an oscillator. In the latter case the drive unit is replaced by a network supplied from the output waveguide. There may be one or more electron beams. In the latter case they are arranged in correct phase relationship around a symmetrical helical waveguide, the beam deflections being coordinated to effect correct phasing. The gun is supplied from a suitable modulator or from the mains. The collector 4 has water cooling passages 5, 6 and can be insulated from the casing so that the collector current can be measured, the focusing of the gun being adjusted to make this current a maximum.
Patent GB-1574598-A (GB)
Title: Powered rail vehicles
IPC: B61F5/02
Filed: 1976-03-05
Abstract: The rail power unit has a vehicle body (1) and a bogie which, for the purpose of transmitting tractive forces and braking forces in a jolt-free fashion and in order to ensure easier access to the space in the central area of the bogie and to the components located in the space above said area, is coupled to the vehicle body (1) via two components (3) which are resilient in the longitudinal direction and are arranged in front of and behind the centre of the bogie. The said components (3) are each arranged between a part (16) of the bogie frame (14) and a rigid tractive-force transmission element (2) of the vehicle body (1), which element protrudes in front of and behind the centre of the bogie. The components (3) are preferably also of laterally resilient construction and arranged symmetrically with respect to the centre of the bogie so that the bogie can rotate about a central, imaginary, vertical axis with respect to the vehicle body (1). <IMAGE>
Patent GB-178101-A (GB)
Title: Improvements in dust caps for tyre valves
IPC: B60C29/06
Filed: 1922-03-29
Abstract: 178,101. Schrader's Son, Inc., A., (Assignees of Schweinert, M. C.). April 8, 1921, [Convention date]. Dust caps for tyre valves.-A dust cap of the type provided with a longitudinally sliding nut adapted to screw on to the top of the valve casing is fitted with means for preventing relative rotary movement of the nut and cap and for producing a frictional engagement between these two parts. In the form shown, the nut E has projections H adapted to slide in grooves G pressed in the sheet metal cap and has a groove J adapted to house a split spring ring I for producing the frictional grip between the nut and cap. The lower part of the cap is fitted with an annular member L having a tapered flange O to facilitate the application of the cap and to prevent tilting.
Patent GB-906237-A (GB)
Title: Apparatus for signalling and/or registering the existence of slubs on a running yarn
IPC: B65H63/06
Filed: 1961-03-13
Abstract: 906,237. Testing yarn. ONDERZOEKINGSINSTITUUT RESEARCH N.V. March 13, 1961 [March 15, 1960], No. 9100/61. Class 106 (1). [Also in Groups IX and XXXVI] Slubbiness in yarn is tested by passing the yarn through a ring of scanning members arranged in two equal groups, each group being connected to an amplifier and the outputs of the amplifiers being arranged to drive a counter whenever there is a significant difference between them. The detector comprises a pair of copper wires 21, 24 together with screening wires 20, 22, 23, 25 wound helically round a ring 17 with a small gap 18. The yarn becomes electrostatically charged as it passes through a draw-twister and a slub 26 will induce a charge in one or other wire 21, 24. Such charges are amplified by cathode followers A 1  or A 2 , the output of the latter being inverted at R. Whenever, then, the outputs of A 1  and A 2  differ in magnitude a signal is sent through A 3  to a counter C which is responsive only to signals above a predetermined strength.
Patent GB-712992-A (GB)
Title: Improvements in side delivery rakes and/or swath turners
Inventor: BAMFORD CYRIL JOSEPH
IPC: A01D78/00
Filed: 1951-04-19
Abstract: 712,992. Side-delivery rakes. BAMFORDS, Ltd. July 17, 1952 April 19, 1951], No. 9131/51. Class 6 (3) In a side-delivery rake, of the kind comprising a series of parallel vertical rake-wheels arranged in echelon obliquely to the line of travel, some or all of the wheels are coupled together by drive-transmitting means. As shown, five wheels 17-21 are mounted on crank-arms 27 in an open frame 10 trailed by a tractor on castors 42. The two forward and two rear wheels are coupled by rods 41. The centre wheel 19 rotates independently and can be lifted separately to leave the remaining wheels in two spaced groups, for swath-turning. The coupled rake-wheels are lifted in unison for transport, by a cable 37, a lever 36, and cables 32 attached to yokes 29. The rake-wheels carry spring-tines 25 inclined rearwardly to the direction of rotation, and the coupling-rods are arranged at 120 degrees around the wheels to avoid dead-centre effects. In a modification, the coupled wheels are interconnected by chains or V-belts.
Patent GB-250594-A (GB)
Title: Improvements in animal traps
IPC: A01M23/26
Filed: 1926-04-07
Abstract: 250,594. Douglas, V. R. G. April 8, 1925, [Convention date]. Animal traps.-The tread plate 7 of a spring- jaw trap is curved downwards from its middle line towards the sides of the jaws 4. The jaws are retained in the set position by a projection 11 on a hinged bracket riveted to the tread-plate engaging in a slot 12 in one of the jaws. The cross-member 9 of the trap is bent to extend downwards from its junction with the main frame 1 and the bracket is pivoted to the member 9 at its lowest point to give the greatest possible movement to the projection 11. The spring 5 is riveted to the main frame close to the jaw post 2. The end of the main frame is bent round to form a hinge for a link 13 to which a securing chain 15 is attached through a swivel 14. The jaw-engaging surfaces on the eye 6 of the spring are bevelled in an inward and downward direction and the sides of the jaws 4 gradually increase in width away from their pivots. In a modineation the cross-section of the tread plate takes the form shown in Figs. 7. The Specification as open to inspection under Sect. 91 (3) (a) describes a modified form of tread-plate having the cross-section shown in Fig. 8 (Cancelled). This subject-matter does not appear in the Specification as accepted.
Patent GB-513316-A (GB)
Title: Improvements in the method of jointing sheet metal
IPC: B21D51/28
Filed: 1938-03-25
Abstract: 513,316. Sheet - metal joints. DOVE, J. A. March 25, 1938, No. 9254. [Class 83 (iv)] In a seamed joint in which two folded-back edge portions interengage one within the other, interpenetrating or intercalating portions are provided at the edges so as to prevent the seam from being collapsed. In one form, Fig. 3, one edge is formed with a longitudinal hook portion 10 adapted to engage a similar hook portion 8 of the other edge. At the upper end of the seam, the hook portion 10 is cut away to leave an edge 13 adapted to fit within and abut against the outer fold of a double fold portion 9 at the upper end of the other edge. As shown in Fig 8, a tongue 17 of one edge is adapted to fit within a slot 19 cut in the other edge, the slot being either of the form shown or right angular. In another form, Fig. 14, tongues 32 and 33 pressed up from opposite edges interengage and are pressed together. In another form, Fig. 17, a tongue 36 on one-edge engages within a band 38 pressed from the general plane of the other edge.
Patent GB-1207981-A (GB)
Title: Improvements in or relating to the detection of the rate of change of an electric voltage
Inventor: MARSHALL RICHARD CARLILE
IPC: G01N30/86
Filed: 1967-02-27
Abstract: 1,207,981. Semi-conductor circuits. GEORGE KENT Ltd. 20 Feb., 1968 [27 Feb., 1967], No. 9280/67. Heading H3T. [Also in Division G1] In apparatus for detecting slope of a variable electric signal by sampling the variable electric signal periodically, the sampling frequency is varied in accordance with a predetermined programme. The apparatus may be used to detect peaks and troughs in the output signal from a gas chromatograph, the sensitivity and bandwidth being varied in opposite directions by alteration of the sampling frequency. As shown, the device 12 is supplied at terminals 18, 20 with the output signals from a gas chromatograph and changes the state of a bi-stable circuit 34 following each minimum or maximum of the current at terminals 18, 20. This is achieved by repetitively discharging capacitor 16 through winding 24 of a transformer by repetitively closing a switch (such as a transistor) 22 as described in Specification 1,060,597. The sensitivity and bandwidth of device 12 may be altered by variation of the sampling frequency of switch 22. A clock 40 is started by a pulse on line 44 from the chromatograph. For the first 20 seconds, a tri-stable device 50 is in a first state which opens an AND gate 72 which feeds signals from a source 60 at 10 c/s. via an OR gate 78 to switch 22. After 20 seconds a signal from clock 40 changes device 50 to its second state so as to allow gate 74 to pass sampling signals at 2 c/s. whilst after a further interval of 80 seconds device 50 allows gate 76 to pass sampling signals at 0À5 c/s. The threestage reduction in sampling frequency thus allows the sensitivity of device 12 to be changed to correspond with the lower slope of the later peaks of the series from the chromatograph.
Patent GB-1371948-A (GB)
Title: Abrasion-resistant cast iron
IPC: C22C37/06
Filed: 1972-02-29
Abstract: 1371948 Cast iron W H MOORE and H H KESSLER 29 Feb 1972 9297/72 Heading C7A A wear-resistent white cast iron comprises, in weight per cent:- the combined Mn + Cr content being at least 15% and the balance being iron, impurities and incidental ingredients. The total amount of impurity and incidental ingredients should not exceed 5 per cent being made up of elements such as Ni, Mo, W, V, Cu, P and S. The cast iron possesses a substantially austenitic structure contaning both orthorhombic and trigonal carbides of manganese and chromium and is particularly suited for wear-andabrasion-resistant castings, e.g. for grinding and crushing purposes.
Patent GB-1203014-A (GB)
Title: Improved hydrocarbon separation process
IPC: C10G25/03
Filed: 1969-02-21
Abstract: 1,203,014. Separating straight chain hydrocarbons by adsorption. TEXACO DEVELOPMENT CORP. 21 Feb., 1969 [11 March, 1968], No. 9392/69. Heading B1L. In an isothermal cyclic vapour phase process for separating straight chain hydrocarbons from feedstock mixtures by adsorption on natural or synthetic zeolite molecular sieves, followed by a purge step and desorption, the flow rate of the purge medium is maintained at 50-1000, preferably 170-680, vapour hourly space velocity, the purge medium volume at 0.1-10, preferably 0.2-4, vols. vapour per unit bed volume, and the ratio of the purge medium flow rate to purge medium volume at 40-7000:1, preferably 50-3500:1. The process is particularly applicable to the separation of straight chain hydrocarbons from C 10-15 -kerosene feedstocks using type 5A molecular sieve and using as purge and desorbing medium a fraction consisting predominantly of n-heptane.
Patent GB-1536726-A (GB)
Title: Ozone generating apparatus
IPC: C01B13/10
Filed: 1976-03-09
Abstract: 1536726 Ozonizers MITSUBISHI DENKI KK 9 March 1976 [17 March 1975] 09426/76 Heading H5H In an ozonizing apparatus, incoming air or oxygen is dried in a "moisture exchanger" 6 before ozonizing, and the ozonized dry air or oxygen is passed through the "moisture exchanger" 6 to pick up moisture. The moisture exchanger may have a stationary moisture absorbing wall 65, Fig. 4, moisture migrating through the wall in use from a drying side 651 to a wetting side 652. Alternatively the water absorbing substance is carried around a closed loop, Fig. 5. Gas is passed through the absorbent and is dried on one side of the loop 67 and dampened on the other 68.
Patent GB-328748-A (GB)
Title: Device for pumping fluid from deep bore-holes
IPC: F04B47/08
Filed: 1929-03-23
Abstract: 328,748. Kaplansky, A. A. March 23, 1929. Actuating by liquid pressure; single-acting bucket pumps.- In pumping apparatus for deep wells of the kind in which a liquid is reciprocated in a closed system by a pump at the surface and operates a main pump at the bottom of the well by means of a hydraulic motor connected thereto, the motor piston 5 working in a cylinder 6 carries a tube 7 which telescopes in a pipe 8 extending to the surface pump. The pressure liquid for actuating the piston 5 is reciprocated by a surface pump 9, 10 in the pipe 8, and during its downward movement, it passes through the pipe 7 into the lower end of the cylinder 6, and raises the piston 5, and its connected pump piston 2. The liquid above the piston 2 is forced up the pipe 12 and through the delivery valve 20, and the liquid above the piston 5 is forced through holes 19 into the pipe 12. During the return stroke of the piston 10, the liquid is withdrawn from below the piston 5, which then descends and effects the downstroke of the piston 2. Part of the delivery liquid passes from the pipe 12 through a pipe 11 into the cylinder 9 during the forcing stroke of the piston 10. The pump 9 is fitted with a safety valve 15.
Patent GB-142994-A (GB)
Title: Improvements relating to dynamo electric machines
IPC: H02K23/24
Filed: 1919-04-14
Abstract: 142,994. Price, A. A. April 14, 1919. Exciting. - A variable-speed constant-current dynamo has shunt field-magnet windings D, Fig. 1, mounted on the main poles A, B, a demagnetizing series winding K mounted on one main pole B, and a series winding E mounted upon a subsidiary pole C. The brushes F, G are set in the. neutral position with respect to the main poles; one of the brushes may have a wide span, as shown in dotted lines. In a modification, Fig. 2, the winding E on the subsidiary pole is joined between main and auxiliary brushes F, J.
Patent GB-591970-A (GB)
Title: Procedure for the manufacture of shock-absorbing jewel-bearings for clock and watch movements and jewel-bearings made according to this procedure
IPC: G04B31/04
Filed: 1945-04-16
Abstract: 591,970. Bearings. COLOMB, H. April 16, 1945, No. 9510. Convention date, July 28, 1944. [Class 12 (i)] A shock-absorbing jewel bearing for watch movements comprising a pierced jewel 15 driven into a setting ring 16 of beryllium alloy, steel, or nickel alloy which is centred in its mounting 11 by co-operating surfaces which allow tilting on shock has the pierced jewel assembled in its setting ring by a press gauge corresponding exactly in its inner shape with the mounting. The pierced jewel on assembly in its setting ring 16 projects therefrom to provide a transverse centring surface co-operating with the interior base 21 of the mounting 11, the other co-operating centring surfaces being provided by a rounded edge 18 and co-operating conical surface 17 formed respectively on an internal shoulder of the mounting and on a flange enlargement of the setting ring, or vice versa. A cap jewel 14 is held on an internal rib 19 in a flange enlargement of the setting ring by the usual restoring spring 30; the internal rib 19 is provided by a groove 20 cut at an internal angle of the flange enlargement whereby the rib can be easily milled or cut in a lathe to reduce the amount by which the cap jewel projects.
Patent GB-239798-A (GB)
Title: Improvements in shock absorbers
IPC: F16F3/07
Filed: 1925-04-09
Abstract: 239,798. Johnson, G. W., (Dorsey, L. G., and Dougherty, M. J.). April 9, 1925. Arrangements of springs with mountings complete in themselves. - An impulsereceiving element is connected with the resilient element through a number of intermediate elements, for instance telescoping cylinders, in such a way that the movement of the impulsereceiving element is reduced by substantially uniform increments. The mechanism shown in Fig. 2 comprises telescoping cylinders 1, 2, 3, 4, the largest cylinder 1, which encloses helical springs 30, being connected by the bolt 6 to a fixed arm projecting through a slot 29 in the cylindrical casing 26. The smallest cylinder 4 is connected by the bolt 15 to an arm attached to the movable part, the arm passing through a slot 28 in the casing 26. The smallest cylinder 4 also carries a cylinder 25 which works in the casing 26 and forms an oil-holder. The cylinders 1, 2, and 3 are connected by three sets of flexible mechanism shown also to a larger scale in Fig. 6. Each set consists of a wire passing over a sheave 11 carried by the cylinder 2 and having its ends attached to the cylinders 1 and 3, the arrangement being such that the cylinder 3 moves twice as rapidly as cylinder 2. The cylinders 2, 3 and 4 are similarly connected.
Patent GB-1284553-A (GB)
Title: Improvements in rotary-positive displacement fluid machines
Inventor: BROWN ARTHUR E
IPC: F01C11/00
Filed: 1969-08-08
Abstract: 1284553 Rotary positive-displacement machines A E BROWN 8 Aug 1969 9561/72 Divided out of 1284551 Heading F1F The subject-matter of this Specification is substantially identical to that described in the Specification 1284551 but the claims are concerned with a machine having a pair of rotors lodged in intersecting bores within a casing structure and a balancing hole formed in each rotor hub.
Patent GB-150245-A (GB)
Title: Improvements in and relating to oil lamps
IPC: F21S13/00
Filed: 1920-04-06
Abstract: 150,245. Hanmer, F. April 6, 1920. Reservoirs, attaching to lanterns.-In a vehicle or other lamp in which the oil-container is secured to the lamp body by means of bayonet fastenings, the bayonet-stud, or one of the bayonet-studs, is locked in the attached position by the closure of another part of the lamp. For example, in the lamp shown in Fig. 2, the bayonet-stud g on the reservoir c is locked in the slot k in the lamp body a by engagement with an eye-plate or hasp m on the front bell b, when the bell is closed.
Patent GB-777213-A (GB)
Title: A new or improved method of, and apparatus for, controlling or preventing the discharge of molten metal from containers
IPC: C22B4/00
Filed: 1953-04-09
Abstract: 777,213. Foundry ladles; coating wire or strip by dipping. BIRLEC, Ltd. April 9, 1953 [April 9, 1952], No. 9613/53. Classes 82(1) and 82(2) [Also in Groups XI, XII and XXII] For controlling or preventing the discharge of molten aluminium or other metal 12, Fig. 1, from a holding furnace or other container 11 through an opening 14 below the level 13 of the metal, electromagnetic forces are induced in the metal by an induction coil 16 disposed around the container to move the metal away from the opening. Figs. 3 and 6 show a die casting machine 37 fed from a melting furnace 21 which is pivoted at 22, heated by an induction coil 27, and fitted with such an electromagnetic valve 28. The latter comprises a chamber 31 surrounded by a wall 29, induction coils 32, and a magnetic valve 28. The latter comprises a chamber 31 surrounded by a wall 29, induction coils 32, and a magnetic shield 33, and containing a refractory nozzle 38 inclined at approximately 45 degrees to the axis of the chamber 31, with its discharge outlet 46 heated by a coil 47. In a modification (Fig. 5 not shown) the valve 28 is in substantially horizontal alignment with the pivot 22. Fig. 8 shows a galvanizing vessel 51 heated by an induction coil 27 and provided with two such electromagnetic valves. The latter comprise aligned nozzles 52, 53 which are surrounded by induction coils 57, 58 and which have openings 56 for the passage of wire or like strip material 62. Specification 777,214 is referred to.
Patent GB-197495-A (GB)
Title: Apparatus for cracking hydrocarbons
Filed: 1922-04-04
Abstract: 197,495. Gartlan, S. L., and Gooderham, A. E. April 4, 1922. Drawings to Specification. Hydrocarbons, cracking.-The apparatus constituting the invention is identical with that described in Specification 197,494, in connection with a process of cracking hydrocarbon oils. Specification 179,645 is referred to.
Patent GB-658894-A (GB)
Title: Improvements in or relating to connecting rod assemblies for multi-cylinder reciprocating engines having two or more cylinders or rows of cylinders angularly displaced about a crank shaft
Inventor: BARLOW BENJAMIN WILLIAM
IPC: F16H21/34
Filed: 1949-04-11
Abstract: 658,894. Opposed-piston two-stroke engines. NAPIER & SON, Ltd., D. April 11, 1949, No. 9767. '[Class 7(ii)] [Also in Group XXVI] An I.C. engine comprises three crankcases A, A<SP>1</SP>, A<SP>2</SP> each containing a six throw crankshaft B, B<SP>1</SP>, B<SP>2</SP> whose axes lie on the apices of a triangle, cylinder blocks C, C<SP>1</SP>, C<SP>2</SP> containing six open-ended cylinders extend between each adjacent pair of crankcases and each cylinder contains two pistons D connected by a master connecting rod G and a subsidiary connecting rod H respectively to the two crankshafts between which the cylinders extend, the subsidiary rod H being pivotally connected (see Group XXVI) to a master connecting rod G of an adjacent cylinder in the next cylinder block so that each crankpin B<SP>3</SP> of each crankshaft is coupled to two pistons. The engine operates on the two stroke cycle and is fed with scavenging and charging air through delivery volutes F<SP>3</SP> from a centrifugal compressor F<SP>4</SP> secured to one end of the engine and having an air intake F<SP>5</SP>.
Patent GB-610356-A (GB)
Title: Improvements in or relating to the case hardening of ferrous alloys
IPC: C23C8/32
Filed: 1946-03-29
Abstract: In a process of case hardening articles of ferrous alloy, the articles are heated with a mixture of a nitriding gas with a carburizing gas comprising combustible constituents including CO and CH4 and the treatment is continued until the surface carbon content is higher than that required and is followed by a diffusion treatment.  The surface carbon content may be between 2 and 7 per cent carbon before diffusing to produce a eutectoid case.  The nitriding gas may be ammonia in amounts between 10 and 95 per cent and the carburizing gas scrubbed raw towns gas or towns gas treated as described in Specification 588,547, [Group XII].  The surface carbon content may be determined by the ratio of carburizing gas to nitriding gas and temperatures of over 900 DEG C., e.g. 1000 DEG C. may be used.  When using raw towns gas the proportion of ammonia should be higher than that used under otherwise similar conditions.