baber/WOPTO huggingface dataset:
Patent GB-105827-A (GB)
IPC: D21H17/60
Abstract: 105,827. Vavra, E. H. June 14, 1916. C o a t i n g -machines. - A machine for coating cartonblanks with melted paraffin comprises an adjustable inclined magazine 5 for holding the blanks A having a strip 11 of rubber or the like and a feed-roller 9 preferably having a rubber periphery, contact being secured by a spring plate 14. The blanks are fed one at a time between guidefingers 52, 56, are carried through a tank 3 of melted paraffin by means of feedrollers 46, 47, a curved adjustable guide 60, and squeezerollers 36, 37, the line of contact of which is slightly below the surface of the liquid, but the speed of rotation is sufficient to prevent liquid entering the space between them above the line of contact. Thence they are guided by fingers 63 over the edge of the paraffin tank 3, contact with the edge of the tank being prevented by a guard-plate 66 or by a rotating roller on the edge. The coated blanks then pass into a tank 4 containing cooling-liquid, for instance water, and are carried through by means of endless cords 69, 69<1> passing over rollers 70, 71, 72, 73 and 74, 74', 75 respectively and are finally passed through rollers 83, 84 to remove excess of liquid. The tank 4 receives water at 97, 98 and discharges at 99. Upon the driving-shaft 30 is pivoted a frame 35 carrying the squeeze-rolls 36, 37, the roll 36 having adjustable bearings. These rolls are geared together and driven from,' the shaft 30 by gears 41, 40. The feed-rollers 44, 45 are carried by a lever 48 pivoted to a lever 48<1> which is pivoted to the frame 35 so that either the rollers 46, 47 or the whole frame 85 can be swung upwards for inspection or repairs. The rollers 46, 47 are geared together and driven from a gear 38<1> on the roll 36 through a gear 51. A guard-plate 100 prevents splashing of the paraffin. A bevel-gear 94 on the shaft 30, Fig. 2, drives a shaft 89 through which, by means of other bevel-gears, are driven the rollers 83, 84 and the shaft 10 of the feed-roll 9, the roll 9 being connected with its shaft by a clutch 21, Fig. 4, operated by a handle 25 carrying a spring catch 28 for engaging one of the frame members when it is desired to keep the clutch out of engagement. The frame 35 and levers 48, 48<1> may be raised about the shaft 30 and maintained in that position by a rod 35<11> carried by the frame 35 engaging a detent 35<1>, Fig. 1.
Patent GB-184532-A (GB)
Title: The transformation of alternating electric pressures and currents to direct pressures and currents and to alternating pressures and currents of different frequency and number of phases
IPC: H02M1/22
Filed: 1921-04-11
Abstract: 184,532. Johnson & Phillips, Ltd., Stigant, S. A., and Tracey, A. I. April 11, 1921. Commutator switching - arrangements ; frequency, changing; phase, changing.-Apparatus for changing the number of phases or the frequency of an alternating current system comprises collector rings equal in number to the number of phases to be transformed and segmented rings equal in number to the number of transformed phases, all the rings being rotated at a speed corresponding to the frequency of the supply. The number of segments in each of the segmented rings is equal to twice the ' frequency factor, i.e. to twice the ratio of the required frequency to the primary frequency. Two additional segmented rings, from which a direct current can be led off, may be provided, the number of segments in each of these rings being equal to the number of phases in the primary supply. A1 arrangement for converting threephase currents into direct current and into singlephase current of three times the fundamental frequency is shown in Figs. 1 and 3. The threephase supply is connected through brushes 1, 2, 3 to collector rings a, b, c, which are respectively connected to segments A, B, C on the segmented ring d<1>, d<2>, e. Direct current, obtained from the peaks of the waves A, B, C, Fig. 1, is collected from the rings d<1>. d<2> by brushes 4, 5, while a single-phase current of three times the frequency of the supply is obtained by collecting the intermediate portions of the waves from the ring e bv brushes 6. 7. All the rings are mounted on the same shaft and rotated by a synchronous' motor. Figs. 5 and 6 show an arrangement for converting three-phase currents into direct currents and into three-phase currents of three times the frequency of the supply. The primary threephase currents are converted into nine-phase currents by a transformer G<1>, and the nine-phases are connected to collector rings r - - z on the shaft f rotated by a synchronous motor M. Direct current is collected from the peaks of the waves R - - Z by segmented rings d<1> d<2>, each of which has nine segments, and three-phase currents of three times the original frequency are collected from the intermediate portions of the waves by rings o, p, q, each of which has six segments. If currents of lower frequency are required, the collection by the rings o, p, g, is arranged to follow a path such as that shown by the dotted line in Fig. 5. Any arcing that may occur at the gaps in the collector rings may be eliminated by an air-blast or magnetic blow-out, and harmonics may be eliminated by placing resonant shunts in the primary or secondary circuits. For high voltages, the collector rings may be placed on opposite sides of the motor, and insulating barriers may be placed between the rings, or several motors may be used. An arrangement for converting a three-phase system to a two-phase system of 1¢ times the frequency is also described.
Patent GB-383539-A (GB)
Title: Improvements in illuminating devices for teaching, advertising, decorative and like purposes
IPC: G09F13/00
Filed: 1932-04-14
Abstract: 383,539. Changing signs. BOURGEOIS, F. J. and PARAYRE, J. J. P., 23, Rue Paul Massot, Pyrenees Orientales, Perpignan, France. April 14, 1932, No. 10694. Convention date, April 16, 1931. [Class 3 (i).] Optical-projection apparatus.-A letter &c. 10, formed as a solid cut-out twisted out of a single plane, is adapted to be illuminated progressively by a lamp 13 shielded by a swinging shutter 11. The mechanism comprises an expanding wire 27 adjustably held at one end 30 and at the other end 23 electrically connected to a lever 17 pivoted at 18. The lever 17 is retracted by gravity and/or a spring 19, and at the opposite extremity divides into a fork furnished with rollers 21, 22, of which the roller 21 is electrically conducting.. The shutter 11 is pivoted at 12 and has a right-angled arm 15 adapted to be snapped over against roller 21 or 22 by gravity and/or a spring 25. In the configuration shown the current passes through lamp 13, spindle 12, arm 15, roller 21, lever 17, and wire 27. The wire is gradually heated, allowing the spring 19 to pull the lever 17 clockwise and open the shutter 11 till a limiting position is reached when the spring 25 brings the arm 15 against the roller 22 and breaks the circuit. The wire 27 cools and contracts and the process is reversed. Alternatively the shutter may be operated by clockwork &c. The lamp rays may be made parallel by a condenser, and the letter 10 may be optically projected on to a translucent screen.
Patent GB-755271-A (GB)
Title: Improvements in or relating to high-frequency amplifier circuits
IPC: H03F1/16
Filed: 1954-04-12
Abstract: 755,271. Discharge tube selective amplifiers. PHILIPS ELECTRICAL INDUSTRIES, Ltd. April 12, 1954 [April 15, 1953], No. 10695/54. Class 40 (6). In an ultra-high-frequency amplifier employ. ing a tube with separate cathode leads for the input and output circuits, the input inductor L, Fig. 1, is connected to the grid and to the junc. tion of two capacitors Cn, Cv in turn connected to the anode and the first cathode lead respectively. These capacitors and the capacitances Cp, Cgp between the ends of the inductor L and the second cathode lead are so chosen as to neutralize the degenerative action of the output circuit on the input circuit via the interelectrode capacitances. Degeneration is at a minimum when Cp/Cgp = Cv/Cgk = Cn/Cag. The damping may be made negative by arranging that (Cgk. Cp) - (Cgp. Cv) is negative thereby offsetting other damping actions. At very high frequencies when the anode and cathode supply leads exhibit inductance L1, L2 the modification shown in Fig. 4 may be employed. The trimmers Cn, Cv are enclosed in a metal screen connected to earth over the inductor Lp, the trimmers having a capacity Cp to the screen. For balance Lp Cp = L1 Cn = L2 Cv.
Patent GB-712392-A (GB)
Title: Improvements in or relating to the production of rubberised masses
IPC: C08J3/24
Filed: 1950-05-01
Abstract: Rubberised masses are obtained by coating exfoliated vermiculite with prevulcanised latex to form a sealing film for the vermiculite whilst preventing the absorption of latex into the cells, and then bonding the coated bodies with vulcanised latex into a mass in a mould.  The density of the final product may be varied by using particles of expanded vermiculite of from 1/2 to 1/16 inch in size, and by varying the pressure applied.  Reject mouldings may be released and bound together with further quantities of vulcanised latex.  Preferably 6 parts of vulcanised latex is used to 1 part of exfoliated vermiculite, and the product may be dried by radio frequency.
Patent GB-377626-A (GB)
Title: Improvements relating to apparatus for mixing granular or powdery materials
IPC: B01F13/00
Filed: 1932-04-14
Abstract: 377,626. M i x i n g - a p p a r a t u s. KEEVIL, W. F., Caerlavrock, and KEEVIL, O. F., Claremont, both in Nutfield Road, Redhill, Surrey. April 14, 1932, No. 10746. [Class 86.] Mixing-apparatus for granular or powdery materials comprises an endless chain 20 passing over upper and lower pulleys 16, 18 in a casing 10 depending into a pit 48, the chain being provided with blades 22 which lift the material and throw it against a shutter 31 at the top of the casing, the shutter being removed at the end of the mixing operation, the material being then discharged down a shoot 46. The blades may be toothed, and the material is supplied to the casing down a shoot 55 fitted with a door 49.
Patent GB-973815-A (GB)
Title: Method of refining pig iron
IPC: C21C5/32
Filed: 1962-03-21
Abstract: Pig-iron is refined into steel in a rotary furnace having an inclined axis by blowing oxygen into the furnace under a pressure of 1 - 3 kg./sq.cm. through a lance movable in the vertical plane of the furnace, wherein the distance between the lance tip and the surface of the metal bath is increased and/or the inclination of the lance to the horizontal plane is decreased as the oxygen delivery rate is increased during refining so that the ratio of the amount of oxygen entering the bath to that amount available in the furnace remains constant.
Patent GB-633110-A (GB)
Title: Protector or guard for the heating elements of electric fires
IPC: F24C7/06
Filed: 1947-04-23
Abstract: 633,110. Fireguards. TURNBULL, F. April 23, 1947, No. 10888. [Class 126] A guard for fires employing radiating heating elements consists of a sheet M of heat-transmitting, non-inflammable material, e.g. mica, in a metal frame, and having means for attaching the guard to a heating element. Metal strips S, S", E', E" compose the frame, the end strips E', E" having metal lugs L', L" respectively, adapted to be bent at right angles to the sheet M. To each of these metal lugs L', L" is attached a mica lug LM', LM", each having a notch N by means of which the guard is secured to a screw which holds the heating element in place. The guard may be used with a flat, or with a rodlike heating element, in the latter case the mica M and end strips E' E" being curved about the mica lugs LM', LM". In a modification the mica lugs LM', LM" are dispensed with, and replaced by metal lugs of the same shape attached to the end strips of the frame. These lugs may be faced with mica. Further, the end strips E', E" may carry end clips which embrace the ends of the heating element, and which may be additional to the lugs LM', LM".
Patent GB-1253685-A (GB)
Title: Grinding machine
IPC: B24B19/06
Filed: 1969-02-28
Abstract: 1,253,685. Grinding. HEALD MACHINE CO. 28 Feb., 1969 [4 March, 1968], No. 10892/69. Heading B3D. A grinding machine comprises a workhead 12 for holding and rotating a workpiece 24 having a portion which is to be formed with a surface of revolution of non-cylindrical form; a wheelhead 13 for rotating an abrasive wheel 17 having a surface of revolution the profile of which is complementary to that of the surface to be formed on the workpiece; feed means to move the workhead and wheelhead relative to one another to introduce the abrasive wheel to the workpiece for a plunge grind with a predetermined controlled force; a dresser 14, having an operative surface the profile of which is complementary to that of the abrasive wheel surface, located adjacent the workhead and wheelhead; and means serving to introduce the abrasive wheel 17 to the dresser for restoring the abrasive wheel accurately to its original profile after the plunge grind. As described, the workpiece 24 is a ball race having a ball groove 38 and seal grooves 45, 46. The race is rotated during grinding by a platen 33 having a recess 34. The wheel 17 comprises a portion 39 for grinding the groove 38 and portions 41, 42 for grinding the grooves 45, 46. The wheel 17 is mounted on a sipndle 16 of the wheelhead 13 which is itself mounted for movement axially and transversely of the spindle. A second grinding wheel 18 is provided on the spindle 16 for finish grinding of the groove 38 and a second dresser 15 is provided for this wheel. In operation a workpiece 24 is automatically fed to the position shown in the workhead 12 and rotated by the platen 33. The wheelhead 13 is first moved axially from the dashed-line position to align the wheel 17 with the workpiece and is then moved transversely under low force firstly without, and then with, damping, then under high force, and finally held in position for sparking out. The wheel 17 is then withdrawn transversely and the wheelhead moved axially to align the wheel 18 with the groove 38. The wheel 18 is then moved transversely with the wheel 17 within the recess 34 as shown, first under low force, then under high force, and then held in position for sparking out. The wheelhead 13 is then moved transversely and then axially to align the wheels with the dressers 14, 15. A wheel 29 of the dresser 14 is pivoted into contact with the wheel 17 to dress it as coolant is supplied. The wheel 29 has a surface corresponding to that of the workpiece and is made up of a number of diamonds embedded in a matrix of e.g. sintered copper powder. The wheel 18 is then dressed by the dresser 15 comprising a diamond 32 moved in an arc.
Patent GB-358464-A (GB)
Title: Improvements in or relating to rotary engines
IPC: F04C2/32
Filed: 1930-04-05
Abstract: 358,464. Rotary engines &c. LAHAUSSOIS, R., 59, Rue Lopic, Paris. April 5, 1930, No. 10918. Convention date, April 9, 1929. Void [Published under Sect. 91 of the Acts]. [Class 110 (ii).] A gyratory piston f comprises two coaxial cylinders connected by a central web which slides through a circular partition b which is fixed to a casing a. A rocking vane i forms an abutment and prevents rotation of the piston. Inlet and outlet spring-loaded valves are situated in both side walls of the casing. For balancing purposes the engine or pump may be multi-cylindered, two outer pistons being displaced together through 180‹ to the centre piston which is twice the size of the outer pistons.
Patent GB-129416-A (GB)
Title: Improvements in Parachutes for use with Aeroplanes.
Inventor: MEARS FRANK CHARLES
IPC: B64D17/52
Filed: 1918-07-05
Abstract: 129,416. Mears, F. C. July 5, 1918. Parachutes. - A parachute a carried in a case on the airman's back has the suspension rope b passed through the case c at c<1> and attached to the airman's harness, and is connected to the aeroplane by a rope d which is of sufficient length to allow the airman and parachute to drop clear of the aeroplane before opening takes place. The rope d is also attached to fastenings h, on the case, so that these are released first to allow the parachute to be pulled out. The parachute is folded in the manner shown in Figs. 5 and 8, by bringing all the periphery eyelets together upon one another, this being facilitated by the use of a tool comprising a board e fitted with two pins e<1> between which the eyelets are placed. The parachute is then rolled up together with a strip f of canvas laid thereon. When the airman jumps out of the aircraft, the fastenings h are released and the rope d paid out of the casing, and then the parachute is withdrawn bodily and is unwound by means of the canvas strip f. Opening of the parachute may be assisted by means of a strip m attached to the strip f and passed into the folds of the parachute. The case may be provided with a damp-proof lining l formed with flaps l<1>.
Patent GB-591198-A (GB)
Title: Improvements in or relating to fish hooks
IPC: A01K83/00
Filed: 1945-05-02
Abstract: 591,198. Making hooks. RUPP, J., and URBAN, F. May 2, 1945, No. 11073. Convention date, Feb. 23, 1942. [Class 83 (ii)] [Also in Group VI] A fish-hook 20 is produced from a blank of sheet metal by folding the blank to produce over its length a U crosssection, piercing the base of the U and raising a portion therefrom to form a barb 22, and then shaping the hook so that the sides of the U are directed outwardly. In a modification several such hooks extend from a common base which is folded upon itself to form a tube.
Patent GB-432788-A (GB)
Title: Change-speed gear mechanism
IPC: F16H3/089
Filed: 1935-04-10
Abstract: 432,788. Change speed gearing. HUMBER, Ltd., and HEYNES, W. M., Stoke, Coventry. April 10, 1935, No. 11104. [Class 80 (ii)] A layshaft type of gear-box with four forward speeds introduced by two double-acting synchronizing devices A, B has a bearing 14 for the driven shaft 16 between the devices A and B and a gear-wheel 17 for reversed driving on the shaft 16 and against the bearing 14. The bearing 14 is carried by a web 15 supported from the sides of the gear casing. A reversing idler 20 when not in use lies partly underneath the bearing 14. This idler when in use connects the wheel 17 to a pinion 18 on the lay shaft. The synchronizing clutches A, B are the same as described in Specification 421,864 except that the slipping connection between the claw clutch member 11 and the friction clutch member 12 is a ' circlip ' 13 instead of a spring-pressed ball.
Patent GB-610604-A (GB)
Title: Improvements in scooters
IPC: B62K9/02
Filed: 1946-04-11
Abstract: 610,604. Scooters. SNELWAR, H. M. April 11, 1946, No. 11127. [Class 136 (iii)] A scooter comprises a sheet metal platform 10 having a depending flange 11, a raised portion 12 and a depression 13 corresponding to the shape of a shoe, channel-shaped brackets 14 and 18 secured to the underside of the platform to carry axles 15 and 19 for a single front wheel 16 and two rear wheels 20 respectively, a handle 22 detachably secured to the front of the platform and braced by a V-shaped spring 23, the ends of which are bent inwards and fit into holes 24 in the flange 11.
Patent GB-427366-A (GB)
Title: Improvements in and relating to safety razors
IPC: B26B21/52
Filed: 1934-04-13
Abstract: 427,366. Safety razors. MACDONALD, S., 90, Dalkeith Road, Edinburgh. April 13, 1934, No. 11152. [Class 30] Handles are made of wood containing oil, either naturally, as lignum vitae or greenheart, or by impregnation.
Patent GB-436947-A (GB)
Title: Improvements in machines for extruding rubber and like materials
IPC: B29C48/06
Filed: 1934-04-13
Abstract: 436,947. Coating wires by extrusion. ST. HELENS CABLE & RUBBER CO., Ltd., Slough, HARRISON, H. C., Mayflower, Bath Road, Taplow, and ENSOR, A. J., c/o St. Helens Cable & Rubber Co., Slough, both in Buckinghamshire. April 13, 1934, No. 11199. [Class 87 (ii)] In an extrusion head for coating wires with rubber &c., comprising an outer die 7 and an inner hollow core or point 14 through which the wire is drawn, the point is mounted on an arm 12 which is detachably secured in an aperture in the side wall of the extrusion passage. The extrusion head 1 screws into the front end of the forcing cylinder 3 containing a feed worm. The passage 6 tapers towards the detachable die 7. The arm 12 carrying the core is mounted on a flange 15 which is bolted in a recess 11 in the wall of the head 1, the rear wall of which recess is inclined to facilitate withdrawal of the arm. A passage 19 is formed in the arm to lead a wire to be coated to the core point 14 which is detachable from the core proper. Both the core and arm are of stream-line form. The invention is stated to be applicable to extrusion heads having more than one die.
Patent GB-436865-A (GB)
Title: An improved means for advertising
IPC: G09F21/10
Filed: 1934-04-13
Abstract: 436,865. Signs. STAP, W. E. WESTFIELD-, Kenley Cottage, Brighton Road, Purley, Surrey. April 13, 1934, No. 11218. [Class 3 (ii)] Signs, which may be of the luminous electric discharge tube type, are resiliently mounted on aeroplanes in such a way that they are permanently spaced therefrom and do not substantially obstruct the passage of air to the wings &c. Fig. 3 shows in cross-section a neon tube 5 held on to a frame 6 by a clip 8, with a spongy rubber or other pad 9 between the tube and the frame. The frame may be of plywood, with side walls 7, and is of outline shape. Pads are provided also between the clips 8 and the tube 5, and, optionally, between the frame 6 and the surface of the aeroplane. Fig. 4 shows a method of mounting the frames 6 on the plane, bolts 11 passing through plates 9<a> and 12 which are spaced from the wing 2 by packing 10 and the frame 6 respectively. Nosings may be mounted on the wings to accommodate large frames. An alternative form of frame attachment comprises longitudinal strips carried by the wings, and in a further form the tubes 5 &c. are carried by cross springs on a tubular &c. support. The tubes 5 may have reflectors associated therewith, and may be energized by current from a generator driven by an air screw.
Patent GB-527514-A (GB)
Title: Improvements in permeability-tuned wave trap and core construction therefor
IPC: H01F17/04
Filed: 1939-04-13
Abstract: 527,514. Inductances. JOHNSON LABORATORIES, Inc. April 13, 1939, No. 11230. Convention date, April 14, 1938. [Class 38 (ii)] [Also in Group XL] In a wave-trap for use with a radio receiver and comprising an inductance 10 mounted on a tubular former 11 which is fixed on a plug 12, the condenser 25 being mounted on a flange member 13 also fixed to the plug 12, the inductance is varied to adjust the wave-trap frequency by means of a core 16 of comminuted iron, adjustment being effected by means of a slottedhead screw 18 connected to the core by a flexible member 17 preferably of rubber. The rubber is moulded round the head 18a of the screw and has a reduced cylindrical portion 16a tightly engaged in a circular hole in the core 16 by pulling through by means of an extension of member 16a, subsequently cut off. The device may be used in shunt with the receiver aerial circuit as a series circuit as shown, or as a parallel circuit in series with the aerial.
Patent GB-385815-A (GB)
Title: Method of manufacturing gun barrel tubes and linings and jackets therefor
IPC: B21C37/15
Filed: 1932-04-19
Abstract: 385,815. Making tubes, ordnance, &c. SKODA WORKS, PLZEN, 37, Jungmannova, Prague, and REHMANN, K., 14, Kopernikova, Pilsen, both in Czecho-Slovakia. April 19, 1932, No. 11245. [Classes 83 (ii) and 83 (iv).] Molecular structure, altering by mechanical treatment.-Tubes, linings, or jackets for gun barrels are made by working the starting metal (e.g. by hammering, upsetting, rolling, pressing, &c.), then annealing it, then piercing it, e.g. by drilling it cold and then rolling it, e.g. in a pilger mill or a skew roll expanding mill to desired wall thickness. Before rolling, the outside may be trimmed off by a shaving-removing tool.