baber/WOPTO huggingface dataset:
Patent GB-265238-A (GB)
Title: Improvements in vacuum electric discharge tube devices
IPC: H01J19/30
Filed: 1927-01-31
Abstract: 265,238. Westinghouse Lamp Co., (Assignees of Lederer, E. A., and Bray, J. R.). Jan. 30, 1926, [Convention date]. Vacuum tubes.-An anode and, if desired, a grid also, is formed of a main metal, such as nickel, and at least one other metal, such as magnesium or zinc, which has a greater affinity for oxygen than the main metal, and is in sufficient quantity to prevent the liberation of free oxygen from the electrode during the manufacture or operation of the valve, so as to protect a thoriated tungsten or like cathode from oxidation. The deoxidizing metal may consist of a coating formed by dipping the electrode in a bath of molten metal, or by electroplating or spraying, but preferably the electrode consists of an alloy of the metals. The main metal should have a melting point above 1000‹ C. and the deoxidizing metal should be one which reacts with oxygen or oxides in the electrode below 1000‹ C. A cleanup material, which may be the same as or different from the deoxidizing metal, may be added. An alloy of nickel and copper with 0.3 per cent of magnesium may be used, and such an alloy may contain 18 to 35 per cent of nickel and 5 per cent of impurities, including the magnesium. When the electrode is heated for driving off occluded gas, magnesium diffuses to the surface, cleans up oxygen, and decomposes nickel or other oxide. Some of the magnesium distils off and cleans up gas in the valve; alternatively for this purpose a strip of magnesium or misch metal may be secured to the anode and heated by induction. An alloy of copper and nickel with from 15 to 30 per cent of zinc as the deoxidizing metal may be used; the alloy mav contain 60 per cent copper, 20 per cent nickel, and 20 per cent zinc. Alloys of calcium and nickel or of misch metal with iron may be used.
Patent GB-633362-A (GB)
Title: Improvements in or relating to electrical wave generating apparatus
IPC: H03K5/156
Filed: 1947-01-29
Abstract: 633,362. Pulse lengthening circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Jan. 29, 1947, No. 2835. Convention date, Jan. 30, 1946. [Class 40 (vi)] In a pulse lengthening circuit an incoming pulse initiates a current flow and also triggers the fly-back stroke of a sawtooth voltage generator, the output of which is integrated and used to terminate the current flow, the initiation and termination of the current flow determining the position of the leading and trailing edges of the lengthened pulse. In the Figure, negative-going synchronizing pulses 10 appear as positive-going pulses at the anode of amplifier 12 to render diode 20 conducting and charge capacitor 28. Simultaneously, capacitor 42 which has charged from the D.C. supply is discharged through valve 26 when it is rendered conducting by the pulses from valve 12 to produce a sawtooth voltage, across capacitor 42. The positive charge in capacitor.28 renders valve 29 conductive, the valve at once saturating and the resultant fall in anode voltage producing the leading edge 36 of the output pulse which is thus coincident with the leading edge of the incoming pulse 10. On the negative going excursion of the pulses at the anode of valve 12 diode 22 conducts to discharge capacitor 16. The sawtooth voltage across capacitor 42 is integrated by network 46, 48 to give a waveform having an approximately parabolic portion, which is applied to render the normally non-conductive valve 32 conductive, capacitor 28 then discharges through valve 32 and cuts-off valve 29, the rise in voltage at its anode determining the trailing edge 68 of the output pulse 38. The point in the integrated waveform at which valve 32 is rendered conducting and thus the position of the leading edge of the output pulse may be varied by adjustment of the bias potentiometer 52.
Patent GB-251360-A (GB)
Title: Improvements in or relating to machines for harvesting flax and other plants
IPC: B66C23/20
Filed: 1925-02-03
Abstract: 251,360. Boby, Ltd., R., Allingham, S., and Soenens, M. Feb. 3, 1925. Flax-pulling machines.-Fallen plants are raised by needles 16 moved laterally relatively tc the machine to enter the crop at a low level and then gradually moved upwards to lift the plants, the needles also having a transverse movement to nullify the effect of the advance of the machine. The needles are carried by two endless belts or chains 14, 15 that pass round the pulleys 17 - - 19 and 20 - - 22 respectively. Links 32, 33 extend from an extension 34 on each needle to the belts 14, 15 respectively and arc fitted at each end with universal joints. The belt systems are so superposed that the needles are maintained horizontal and during the movement of any needle from the pulley 17 to the pulley 18 it is moved laterally of the machine to penetrate the crop. The belts incline upwardly after passing the salient pulleys 18, 21, thus causing the needles to lift any fallen plants, the needles being retracted rapidly on reaching the pulleys 19, 22. The plants are guided to pulling belts 23, 24 by members 78, 79. The belt 23 passes round a small pulley 26. and a lÓrge pulley 25 driven through gearing 73, 68, 66, 64 from a sleeve 50 actuated from a main wheel 13. The belt 24 passes over idle pulleys 29, 30, 31 and pressing rollers 77 may be arranged between the pulleys 30, 31. An auxiliary conveyer comprising belts 80, 81 may be fitted to deliver the pulled crop at any desired part of the machine. The pulling belts are preferably made of rubber and convexly curved in crosssection. They are each provided with a central hollow rib 84, Fig. 6, adapted to fit into grooves in the pulleys, this hollow rib having a hard core 86 of linen, canvas, or other material. For transport small wheels 12 at the rear of the machine may be lowered by screws 87, 88 to lift the wheel 13 from the ground.
Patent GB-1464941-A (GB)
Title: Mat or grained finish photosensitive relief plates
IPC: G03F7/027
Filed: 1974-01-23
Abstract: 1464941 Photo-sensitive plate POLYCHROME CORP 23 Jan 1974 [1 Feb 1973] 03085/74 Heading G2X A photo-sensitive plate for preparing relief printing plates comprises a supported or unsupported photo-sensitive layer which forms a relief printing image on exposure and development, the, or a free surface of the, layer having a mat or grained finish coarse enough to enable uniform contact with a transparency during exposure but insufficiently coarse to adversely affect the resolution required in use. Preferably the mat or grained surface has projections of 0À2-10Á. The layer is preferably a film of a polymer derived from a polisocyanate and a compound having at least two active H atoms as described and claimed in Specification 1464942.
Patent GB-270008-A (GB)
Title: Improvements relating to tunnelling machinery
IPC: E21F13/02
Filed: 1926-02-03
Abstract: 270,008. Manton, A. W. Feb. 3, 1926. Discharging and throw-off devices for endlessbelt conveyers.-In tunnelling or trenching, platforms 1, 2 consisting of frames connected by hinges &c. 3, are supported on rollers and the platform 2 carries tracks for spoil-receiving trains. On the platform 1 is arranged a belt conveyer 7 which transports the spoil to a traveller 11 running on rails 14 on the platform and moved by hand or by means driven from the conveyer belt; the traveller has a hinged flap by which the spoil is delivered to either side, plates 16 on the platform directing the spoil into the trucks. Either platform may be supported by the other instead of by brackets 4. Specifications 270,007 and 270,014 are referred to.
Patent GB-666252-A (GB)
Title: Improvements in or relating to barrels, kegs and like containers and methods of making same
IPC: B31B50/59
Filed: 1949-02-04
Abstract: 666,252. Barrels; non - metallic hollowware. HAGOPIAN, V. Feb. 4, 1949. No. 3185/49. Classes 21 and 66. [Also in Groups V and VIII] A container such as a barrel is formed of cup-shaped layers of fibrous material such as felt, wood fibres, glass wool, impregnated with adhesive, the edges of the opposed layers being interengaged and secured to form a band of increased thickness round the container. The assembled layers 10-15 of a barrel may be finally shaped in a die by pressure and, where thermoplastic adhesives are used, by heat, internal heat and pressure being provided by inflating a bag 19 with steam within the container. The bag may form a permanent lining. In the apparatus shown, steam also is supplied to the die shell jackets 34, 37. The shells are relieved at 28 to accommodate the girth band. Reinforcing rings may be interposed between the layers at the barrel ends to form chimes. A screwed connection comprising a flanged nipple 16 secured by an external nut forms the bunghole bush. The flange 17 of the nipple may engage the bag 19 and be roughened to prevent the nipple turning.
Patent GB-104535-A (GB)
Title: Improvements in Dynamo Electric Machinery.
Inventor: JOEL HENRY FRANCIS
IPC: H02K23/24
Filed: 1916-03-06
Abstract: 104,535. Joel, H. F., and Mawdsley, J. H. St. H. March 6, 1916. Coils; commutating poles and windings; pole. pieces.-One side 5b, Fig. 5, of the field-magnet coil 5 is arranged at or near the centre line of the interpolar space of contiguous main poles and magnetizes a U-shaped piece of iron 9 forming auxiliary poles; the other side 5a of the coil is contained in a recess formed between an extension 2 of the main pole 1 and the magnet frame 4. The side 5b and piece 9 are supported from the frame 4 by means of non-magnetic bolts 6, straps 7, and distance-sleeves 8. The piece 9 may be cast with, or directly fixed upon, the frame 4, or, as shown in Fig. 3, a salient part 12 separated from the main pole by an air gap may be employed. The faces of the main poles may be grooved. Fig. 7 shows various forms of coils for use with a field magnet having pairs of parallel poles 1. Fig. 8 shows a two-pole machine in which both sides of the coils 5 pass through iron pieces 9. In a modified form of the machine, Fig. 5, the iron pieces 9 are omitted.
Patent GB-134454-A (GB)
Title: Improvements in or relating to Gas Generators.
Inventor: SVENSSON EINAR
IPC: C10J3/00
Filed: 1919-02-11
Abstract: 134,454. Svensson, E., and Crank, M. A. Feb. 11, 1919. Generators.-Relates to generators using moist fuels, such as waste wood, peat, &c., of the downwardly-burning type in which air, steam, &c. withdrawn from the upper part of the fuel is supplied to the lower part of the generator through side ports or grates. Some. what above the main fire one or more inlet cavities or ports 7 connected by tubes 8 with the upper part of the generator are horizontally arranged around the circular walls in such a way as to maintain a circular layer of burning fuel filling the whole circumference of the generator and forming one mass with the main fire. The cavities 7 are provided with inclined side grates 7<a> adapted to support the layer of fuel in the region of the cavities. The gas before leaving the generator passes through a water-trap at the bottom.
Patent GB-620962-A (GB)
Title: Improvements in multipole electric switches
IPC: H01H19/62
Filed: 1947-02-05
Abstract: 620,962. Snap-action switches. CRABTREE & CO., Ltd., J, A., and HILL, W. E. Feb. 5, 1947. No. 3380. [Class 38(v)] A multipole switch comprises a number of similar switch units each operated by a cam, the cams being mounted on a hand actuated spindle which has a snap-action arrangement. Each switch unit consists of an insulating 'box c having two fixed strip contacts h, h' the under-surfaces of which are engaged by contacts o on a contact strip p, which is pressed upwardly by helical springs r, r' of unequal strength. The contact boxes c are spigoted in and secured to a bracket a having upturned ends a<SP>1</SP>, a<SP>2</SP>, which support a spindle b on which is a moulded insulating sleeve u having cam formations u<SP>1</SP>. When the spindle is turned each cam u<SP>1</SP> presses on a strip p displacing one end of it against the weaker spring r'. If the contacts at this end have become welded, the other end of the strip p is displaced against the stronger spring r to open the contacts at that end. The snap action is provided by a two-lobed cam v, Fig. 5, on which a spring urged roller y<SP>1</SP> bears ; the contacts being closed rapidly due to the impetus obtained as the roller runs down the steeper side of one lobe. A stop x<SP>1</SP> co-operating with this cam v limits the rotation of the spindle. When this switch is used as an isolating switch in conjunction with a motor starting contactor, one of the cams u' may be forwardly disposed so as to open the contactor coil circuit before the other isolating switch contacts open.
Patent GB-549817-A (GB)
Title: Improvements relating to boilers, hot-water containers, and the like
IPC: F24H1/18
Filed: 1940-02-23
Abstract: 549,817. Making lined vessels. TOMLINSON, A. V. (Fabrik Elektr. Apparate F. Sauter Akt.- Ges.). Feb. 23, 1940, No. 3456, [A Specification was laid open to inspection under Sect. 91 of the Acts, Sept. 4, 1940.] [Classes 83 (ii) and 83 (iv)] Soldering; uniting by fusion.-In making boilers and electrically heated water containers lined with copper, nickel, copper alloys, stainless steel or other non-corrosive metal, the sheet iron cylindrical shell and the two end caps are each provided with loosely fitted copper &c. linings which cover or project beyond the edges of the sheet iron, the linings being bent over and placed in contact and being connected together by braz. ing or welding on the outer side of the boiler. The lined shell may be made by bending a blank formed with the edges h of the linings bent round the longitudinal edges of the sheet iron shell and then brazing, or by forming a lining with longitudinal edges i folded over and brazed and then sliding it axially into the sheet iron shell with welded edges and then pressing it outwards. The ends c, e are similarly provided with linings d, f with bent over edges h and the parts brazed together. The lining d is bent over the aperture in the cap c and a copper pipe p brazed therein. The flange q may be welded to the neck of the part e and the lining f bent round the flange at r to act as a sealing surface for connection with the flange of an electric sealing element. In a modification the edges of the end caps c, Fig. 3, fit over the ends of the shell a the lining portions being overlapped. The end caps may alternatively be inserted into the ends of the shell. In a modification of the former both linings are in addition bent round the edge of the ends. In a further form the edges of the iron sheets are bent over as well as the linings. The brazed joint may be covered by a strip m, Fig. 6, of sheet iron welded to the parts. In another form a zig-zag wire reinforcement o, Fig. 7, may be incorporated in the joint.
Patent GB-1366984-A (GB)
Title: Power supply
IPC: H04M19/08
Filed: 1972-01-26
Abstract: 1366984 Substation equipment MICROSYSTEMS INTERNATIONAL Ltd 26 Jan 1972 [27 Aug 1971] 3564/72 Heading H4K [Also in Division G3] To energize supervision relays in a telephone system, when an electronic telephone set is "off-hook", the input voltage to the power supply circuit of the set is regulated to produce a voltage/time curve as in Fig. 2 using the circuit of Fig. 4. On initial operation of the set the uncharged capacitor C 1  causes the fill potential at X to be applied to the base of transistor Q 2  causing high current (which has lower voltage) to be drawn to energize the relays. The lower holding current (at a higher voltage) is achieved as the capacitor charges up. At full charge the capacitor merely acts as an A.C. filter, the circuits comprising Q 2 , R 1 -R 4  and Z 1  and the circuit Q 1 , R 5  and DZ 2  acting as a shunt type regulator and series type regulator respectively.
Patent GB-489966-A (GB)
Title: Improvements in fruit and like peelers
IPC: A47J17/16
Filed: 1937-02-08
Abstract: 489,966. Peeling fruit &c. HEUMANN, H. Feb. 8, 1937, No. 3690. [Class 28 (ii)] In a fruit and like peeler of the kind wherein the fruit is impaled on a spear point at the end of a rotary screw spindle c, and the peeling- tool m is carried on a swivelling support which is swung as the spindle is axially advanced, the screw spindle is engaged by a ribbed roller h which acts as an abutment to produce the axial movement. The roller h is journalled at o in a lever i pivoted to the frame a at k and urged by a spring q to keep the roller h in engagement with the screw. To prevent the screw c from wearing a screw-like groove in the bearing b, it is surrounded by a sleeve b gapped at g to permit the passage of the roller h., and movable axially but not rotationally in the bearing b. The link e between the swivelling support of the peeling-tool and the screw c is journalled on a neck at the end of the screw, and is retained thereon by the handle f. The frame member p is recessed to hold a ball race for the pivot n of the peeling-tool holder. The stem d of the spear point is received in a socket at the end of the screw c, the socket engaging the stem beyond the screwed part r to minimize the breaking stress on the stem.
Patent GB-641888-A (GB)
Title: Improvements in or relating to electric signalling systems
Inventor: BROWN LESLIE RONALD
IPC: H04L25/04
Filed: 1947-02-07
Abstract: 641,888. Voice-frequency signalling. STANDARD TELEPHONES & CABLES, Ltd. Feb. 7, 1947, No. 3711. [Class 40 (iv)] In a system for repeating D.C. impulse trains as V.F. trains, the V.F. impulse corresponding to each " break " is transmitted in the subsequent " make " period, the first break period being utilized to send a V.F. digital prefix. Line and release relays A, B operate on seizure. During the first break period A connects frequency fx and also operates C which holds during impulsing so that during the subsequent make period frequency fy is connected to line. CO operates and locks at the first make to prevent further transmission of frequency fx. The duration of the final fy pulse is determined by the release time of C. In the receiver the initial fn impulse operates X to bring up dialling relay CC. The subsequent fy impulses are repeated by Y and YA (which increases their duration) via the dialling relay to the impulse receiving equipment. The normally operated relay SP is released by X and remains so while CC is operated to disconnect the outgoing line during impulsing. On release a long fn pulse is sent during the slow release of B so that normally operated relay R drops back to give a release signal.
Patent GB-374841-A (GB)
Title: Pipe slips for use in well drilling operations
IPC: E21B19/10
Filed: 1931-02-06
Abstract: 374,841. Borehole apparatus. NATIONAL SUPPLY CORPORATION, 120, Broadway, New York, U.S.A. Feb. 6, 1931, No. 3807. Convention date, Dec. 2, 1930. [Class 85 ] Slips for use in well drilling operations comprise bodies 1, 2, with complementary tongues 22, 23, the tongues 22 having a pair of recesses 24 into which fit lugs 25 on the tongues 23 whereby the slips are connected in pairs with limited relative vertical, transverse and pivotal movements, the parts being such, however, as to prevent inward collapse of the slips sufficient to allow them to fall through the bore of the rotary table &c. A liner 9 on the body 1 holds the parts together. A single handle 28 is provided for each pair of slips. The liners 9 rest on inclined shoulders 7 on the bodies and are held below by a welded key 13 and above by a pin 16 which is locked by a vertical pin 18; inclined serrations 10 and vertical serrations 12 are provided o:a the liners. Specification 342,030 is referred to.
Patent GB-192926-A (GB)
Title: Improvements in or relating to a method of making ice cream
IPC: A23G9/40
Filed: 1922-02-09
Abstract: 192,926. Sanna, A. R. Feb. 9, 1922. Ice-creams and like preparations.-In icecream manufacture, whole milk (or powdered milk) and sugar are agitated in a pasteurizer at a temperature of about 160‹ F., or between 130- 212‹ F., for 10-40 minutes, cooled to 70-120‹ F., and then treated with an enzyme, preferably sterilized pepsin, the agitation being continuous. The enzymatic action causes the casein particles to expand and increase the viscosity of the mass. The mass is then pumped without substantial change in temperature to a homogenizer which mechanically disrupts the swollen casein particles and stops the enzymatic action. The mass is then conveyed to the coolers and subjected to a temperature of 40‹ F. to prevent deterioration. The enzymatic action may be allowed to exhaust itself before introducing the mass to the homogenizer.
Patent GB-101180-A (GB)
Title: Improvements in and relating to Flame-extinguishing Devices applicable to Lamp Chimneys.
Inventor: MCGARRY GEORGE
IPC: F23Q25/00
Filed: 1916-03-17
Abstract: 101,180. McGarry, G. March 17, 1916, Chimneys. - The upper edge of a lamp chimney or of a removable top thereon is inclined, or the top part of the chimney is slightly bent, to facilitate the extinction of the flame by a current of air. The inclined edge of the chimney may be curved. In a modification, the top of the chimney is provided with an integral extension 21, Fig. 5. An air-expelling contrivance is secured near the top of the chimney. Fig. 4 shows a removable top 5 with an inclined upper edge and with an internal flange 6 resting on the top of the chimney.
Patent GB-892035-A (GB)
Title: Improvements in or relating to tube structures for "once-through" steam boilers
IPC: F22B29/06
Filed: 1960-02-04
Abstract: 892,035. Forced flow steam generators; tubular heat exchange elements. SOC. D'ETUDE DE VEHICULES. Feb. 4, 1960 [Feb. 19, 1959], No. 3996/60. Classes 64(3) and 123(2) A water-tube structure for a once-through steam boiler comprises a plurality of geometrically identical tubes such as 1, 2, 3 which, as shown, are wound with parallel convolutions into a flat spiral structure a number of which are superposed to produce the desired size of heating surface corresponding convolutions being interconnected. One or more of the tubes may be extended helically upwardly or downwardly to form a cooled cylindrical wall for the firebox and open into a common collecting header.
Patent GB-329271-A (GB)
Title: An improved method of manufacturing the cylinder blocks of internal combustion engines
IPC: F02F1/16
Filed: 1929-02-06
Abstract: 329,271. Rackham, J. H., and Sheepbridge Stokes Centrifugal Castings Co., Ltd. Feb. 6, 1929. Cylinders, construction of, valve seatings and passages of. - Cast iron cylinder barrels b are secured in a common aluminium or aluminium alloy jacket-casting a by pressing them into rings c and d which are moulded into the upper and lower walls of the jacket casting. The rings may be of cast iron or other suitable material and are keyed into the casting by the dove-tail of the outer faces. The upper surfaces of the top rings are recessed to accommodate the flanged upper ends of the barrels, the lower ends of the latter being reduced in diameter to provide shoulders which contact with the top faces of the bottom rings. The rings of each group may be made separately, or integral, or joined in pairs, as shown in Fig. 4, and they may be provided with lugs into which the head-securing studs or bolts may be fitted. The joints between the barrels and rings are made watertight. Members provided with valve seats may also be pressed into rings moulded into the aluminium block.