baber/WOPTO huggingface dataset:
Patent GB-894250-A (GB)
Title: Chlorination of metal bearing material and apparatus therefor
IPC: C22B1/08
Filed: 1960-01-27
Abstract: <PICT:0894250/III/1> <PICT:0894250/III/2> Metal bearing materials containing alkaline-earth metal compounds as impurities are chlorinated by passing an upwardly moving stream of chlorine through a fluidized bed, comprising said material, in a chlorination chamber, at least a portion of the fluidizing chlorine being introduced into the chamber at a level above the bottom of the chamber, and a portion of the bed solids being withdrawn from the chamber below the level at which said chlorine is introduced into said chamber.  The metal-bearing material may be one containing titanium oxide, for example a titanium bearing slag, which may have been obtained by reducing ilmenite with carbon and removing a portion of the metallic iron thus formed.  The material may be mixed with carbonaceous material before being introduced into the bed.  Fig. 1 shows a suitable chlorination chamber, comprising a shaft 14 lined with refractory brick, having a conical base 39.  Chlorine is introduced via orifices 35, and a portion of the bed solids via exit 43.  The reaction gases which may comprise titanium and ferric chlorides, leave via exit 18.  Inlets 24, 26, 28, serve to introduce raw materials, and, if required, coolants, for example titanium tetrachloride.  Fig. 3 illustrates another suitable chamber, similar to Fig. 1, but having a base comprising several conical sections. The bottoms of the chambers may have configuration other than conical so long as one or more tapering sections are provided.  Specification 754,915 is referred to.
Patent GB-1369812-A (GB)
Title: Battery charging systems for road vehicles
IPC: H02J7/14
Filed: 1971-01-22
Abstract: 1369812 Vehicle battery charging systems JOSEPH LUCAS (INDUSTRIES) Ltd 17 Jan 1972 [22 Jan 1971] 2939/71 Heading H2H [Also in Division G3] A vehicle battery charging system comprises an alternator 11 having a field winding 31, a full wave rectifier 13, 14 through which the alternator supplies power to first and second supply lines 9, 10 between which a battery 12 is connected, a third supply line 16 coupled to the alternator by diodes 15 so that when the alternator produces an output the first and third supply lines are at the same potential and a high impedance series circuit interconnecting the first and second supply lines, the circuit including an ignition switch 21 and an amplifying device which controls a warning lamp 39. When the switch 21 is closed a transistor 18 of the amplifying device is conductive and switches on a transistor 38 to illuminate the lamp 39. Transistors 27, 29 are also conductive to provide current to the field winding 31. When the alternator provides an output the potential of the line 16 rises to equal that of the line 9 thereby switching off the transistors 18, 38 and extinguishing the lamp 39. Whilst the battery voltage is below a predetermined value, a Zener diode 24 is non-conductive and a transistor 25 is switched off but when the predetermined voltage is reached, the devices 24, 25 conduct so that the transistors 27, 29 are turned off thereby terminating the current through the field winding. If the battery is overcharged a Zener diode 41 becomes conductive and switches on the transistor 38 to illuminate the lamp 39. A fault such as low fuel level in the vehicle may be arranged to provide an oscillatory base current to the transistor 38, thus causing the lamp to flash.
Patent GB-1147917-A (GB)
Title: Permanent magnet rotor
IPC: H02K1/27
Filed: 1968-01-19
Abstract: 1,147,917. Synchronous induction motors. WESTINGHOUSE ELECTRIC CORP. 19 Jan., 1968 [14 Feb., 1967], No. 2950/68. Heading H2A. A polarized reluctance rotor consists of a hollow outer core 20 having at least one slab of ferrite within it and connected to it by soft iron polepieces. As shown for a four-pole rotor, there are two ferrite slabs 16, 17 lying between polepieces 12, 13, 14, 15 which are provided with quadrature-axis flux-barriers 28, 29, 30, 31, and direct axis barriers 32, 33, 34, 35 which also project at 28a . . . 35a into the outer core stack 20. The slabs are magnetized across their thickness, and the shaft 11 is non-magnetic. The outer laminated stack which carries the squirrel-cage bars 21, may have salient poles 23. The magnet flux is increased by extending them and their polepieces axially beyond the core stack as shown in Fig. 1. The machine may act as a generator and may be of any polenumber.
Patent GB-813915-A (GB)
Title: Continuous tone reversal development process
IPC: G03G13/08
Filed: 1956-02-01
Abstract: 813,915. Electrostatic image development. BATTELLE DEVELOPMENT CORPORATION. Feb. 1, 1956 [Feb. 1, 1955], No. 3168/56. Drawings to Specification. Class 98(2) An electrostatic latent image is reversely developed by placing a conductive surface at 1/40-1/200 inch from the image and introducing electroscopic powder into the space between these two, the polarities of the image, conductive surface and powder, all being the same. The powder may be in the form of cloud which is given a charge by blowing it through a tube e.g. of metal, into the space above the image. When the image is formed by charging and exposing a photoconductive layer, the charges on the layer uncovered by the powder may be dissipated after development by uniform exposure to light, and then the image may be further developed by introducing powder of opposite polarity to that initially used, while the conductive surface is disconnected from its source of potential, so that further powder deposits on the original powder image. Specification 698,994 is referred to.
Patent GB-868900-A (GB)
Title: Improvements in or relating to thermionic cathodes
Inventor: BURKE PETER FRANCIS CONWAY
IPC: H01J9/04
Filed: 1960-01-29
Abstract: <PICT:0868900/III/1> A succession of thin layers of alkaline earth carbonate coating is applied to a thermionic cathode by maintaining the cathode in the central zone of a spray gun, and periodically interrupting the spray.  As shown, flat-surfaced cathodes 3 are supported in front of a spray gun 1, the spray from which is interrupted by a rotating disc 4 having a slot 5 cut in its periphery.  Cylindrical cathodes may be supported with their axes vertical, and rotated at a considerably higher speed that the disc 4. The sprayed material may be of conventional chemical composition, but the predominant particle size of the powder content is preferably less than 2 microns.
Patent GB-795213-A (GB)
Title: Servomechanism systems
IPC: G05D1/00
Filed: 1956-02-02
Abstract: 795,213. Automatic control systems. SPERRY RAND CORPORATION. Feb. 2, 1956 [Feb. 14, 1955], No. 3331/56. Class 38 (4). In a system for automatically stabilizing a variable, the resultant of a positional follow-up signal and the error signal controls a servomotor through a main amplifier, the resultant signal also being applied to an auxiliary amplifier which provides an output to control the servomotor independently of the main amplifier when the resultant signal exceeds a predetermined value. As applied to an aircraft automatic pilot, Fig. 1, an A.C. signal derived from the pitch pick-off 2 of a gyro vertical 1 normally controls elevator 10 through a main amplifier 5, electromagnet 6 and hydraulic servo-system 8, positional follow-up from the elevator being provided by a pick-off 11. The error signal applied to amplifier 5 is also applied through a preamplifier 15 to an auxiliary electromagnet relay amplifier 14 which only functions if the error signal exceeds a predetermined value, e.g. due to excessive attitude changes or to a fault in the system, so as to apply additional correction through a further electromagnet 18 controlling the hydraulic servo-system. In the auxiliary amplifier, Fig. 2, the error signal is applied through a transformer 20 and a phase discriminator comprising rectifiers 27, 30 and a reference A.C. source 22, 23, to control the energization of relays 25, 26, 28, 29. Error signals of magnitudes greater than the predetermined value increase the D.C. energization of relay 26 or 29, according to the sense of the error, so that the relay operates to effect correction by energizing, in the appropriate sense, electromagnet 18 (Fig. 1) connected to terminals 42, 51. Still larger error signals exceeding a second predetermined magnitude cause operation of relay 25 or 28 to increase the energization of electromagnet 18 by altering the connection of resistances in the circuit of the electromagnet. The electromagnet may be A.C. or D.C. operated. The auxiliary amplifier is designed to prevent extreme operation of the elevators in the event of faults within the amplifier and visual or audible alarms 80, 81 are connected as shown to draw attention to such faults. In a modification (not shown) the relays have fewer contacts and control the energization of electromagnet 18 through a bridge connection of resistors.
Patent GB-1533113-A (GB)
Title: Instruments for measuring the density of atmospheric ions
IPC: G01R29/24
Filed: 1976-01-26
Abstract: 1533113 Measuring charge C A LAWS 26 Jan 1976 [25 Jan 1975] 3337/75 Heading G1U A collector for an atmospheric ion counter comprises three parallel flat plates spaced by insulators along opposing edges to form two air passages the central plate forming a polarizing plate maintained at a known potential, and the outer plates being electrically connected to form collector plates, and wherein screening members are positioned adjacent the edges of the air passages to ensure a linear field between the collector and polarizing plates. The collector plates 1 are formed as a metallic deposit or as an adhesive metallic foil on the surface of an insulating block 14 which has gaps 17 machined in the plates 1 to provide guard rings 1 isolated therefrom, these being electrically connected together and earthed. The metallic coating is carried around the rear surface of the blocks 14 to provide an electrostatic screen and the rear surface also carries heating conductors to prevent condensation affecting leakage resistance. Insulating spacers 9c, 9d form solid walls along the sides of the air passages f, e, these spacers having machined surfaces presented to the plates. Nuts and bolts 15, 16 secure the device solidly. In use, air is drawn through the passages f, e, and ions are attracted to or repelled from the polarizing plate 2 held at potential E. The current thus formed in the collector plates is passed to a high impedance high gain amplifier which drives an indicator, Fig. 1 (not shown). The accuracy of the instrument is ensured by the removal of edge effects by the guard rings, the absence of turbulence over the collector plates since the insulators are spaced therefrom, and the rigidity of the structure.
Patent GB-1316554-A (GB)
Title: High frequency field-effect transistor
IPC: H01L21/00
Filed: 1970-07-30
Abstract: 1316554 Semi-conductors KOGYO GIJUTSUIN 30 July 1970 [31 Oct 1969] 3386/72 Heading H1K An integrated circuit comprising 2 FETs A and L having the drain 13 of A common with the source of L which has drain 10, comprises a substrate 200, e.g. p-type silicon of the same impurity type as the base region 2a of transistor A. A further depletion layer base region 2b of low impurity content is positioned between source 3 and drain 13 and the channel length is Lc is the diffusion direction of part of the base 2a formed by diffusion, using the same positioning areas as that of source 3. In transistor L of depletion type the impurity concentration between source 13 and drain 10 is low, to produce a load transistor. Gate insulating layers 4A, 4L of, e.g. SiO 2  are applied, with gate electrodes 5A, 5L and remaining electrodes 5A, 13W, 10W, 3W, 200W operating as input, output, power input, earth and control for threshold voltage, and the device can function as amplifier or switch.
Patent GB-140170-A (GB)
Title: Gas cleaning device
IPC: B01D47/16
Filed: 1919-02-12
Abstract: 140,170. Keith, J., and Bain, D. B. Feb. 12, 1919. Scrubbers and washers.-A gas-washer and scrubber comprises a casing in approximately cylindrical and conical parts 1, 2, a shaft 3 carrying paddle-wheels 4, 5 and centrifugal fan 14, a conical funnel 12 attached to the casing and forming an inlet to the fan 14, and a pipe 8 supplying water to the paddle-wheel 4. A perforated plate 9, with angular strips 10 to catch the water &c., is placed between the paddle-wheels 4, 5, and a similar plate 13 is provided in the funnel 12. Gas enters at 7 and passes through the paddlewheels and fan to a tangential outlet 17. Liquid impurities from the paddles 4, 5 and partitions 9, 13 pass to an outlet 11, and those from the fan 14 and a pocket 15 to an outlet 16. A fibre washer 19 and loose collar 18 are provided on the shaft 3 between the paddle-wheel 4 and the adjacent bearing. Spring-fed grease-cups 20, 21 are provided, and a fibre disk 23 takes up end vibration. Water is fed through a water-sealed siphon to the pipe 8. The funnel 12 is provided with a spider to support the shaft when the casing part 2 is removed. The Provisional Specification also states that a steam connexion may be provided to melt tar deposits or heat the apparatus.
Patent GB-717605-A (GB)
Title: Improvements relating to heating units for use in apparatus for bending metal tubes
Inventor: NEWMAN RONALD
IPC: B21D9/18
Filed: 1952-02-08
Abstract: 717,605. Induction heating. MUNRO & MILLER, Ltd. Feb. 3, 1953, [Feb. 8, 1952.] No. 3433/52. Class 39 (3). [Also in Group XXII] A heating unit, for use in apparatus for bending metal tubes in which the tubes are simultaneously heated and forced over a mandrel having a metal shaping portion, comprises a rigid electric induction heating coil which is substantially U-shaped in cross-section. Metal tubes 21 forced over a curved mandrel are heated by a channelshaped induction coil 10 adjustably disposed thereover. The channel may be shallower at one end and one end may be flared outwardly. The coil is carried by a bar 13 vertically adjustable in a sleeve 22, Fig. 1, of a bar 20. The bar 20 is disposed substantially parallel to the mandrel and is adjusted longitudinally by rack and pinion means 28, 27; it may be supported by a roller 31 on the tubes on the mandrel. The coil and leads 18 thereto are tubular to allow for circulation of cooling liquid. In another embodiment, Fig. 2, the bar 13 is secured directly to a bar 36 supported at one end on a roller 38 on. the tubes on the mandrel and pivotally connected at the other end to a lug 40 on an endless chain 41. This chain moves the bar 36 longitudinally until the lug passes an idler sprocket 43 when further movement tilts the bar about the roller 38. Specification 697,122 is referred to.
Patent GB-1207081-A (GB)
Title: Metal rolling method and apparatus
IPC: B21B11/00
Filed: 1969-01-21
Abstract: 1,207,081. Rolling mills. FOX INDUSTRIES. 21 Jan., 1969 [4 March, 19681, No. 3483/69. Heading B3M. A body 13 of metal is rolled between rolls 11 and 12, at least one of the rolls being subjected to a vibrational force introduced between the bearings, or at the ends, of the or both rolls. Each roll to be vibrated incorporates a core 15, a layer of magneto-strictive material 14, and an outer sleeve 18. Vibrations are induced in the roll using a frequency generator 20 and a coil 19. One or more rolls in a two-high or four-high mill may be vibrated in this manner. In place of the magnetically generated vibrations, transducers may be coupled directly to the roll ends.
Patent GB-250514-A (GB)
Title: Improvements relating to clothes posts and the like
IPC: D06F53/04
Filed: 1926-02-08
Abstract: 250,514. Chaloner, L. L. Feb. 8, 1926. Props and posts.-A clothes post &c. is provided with a casing 2 having on opposite sides loops 3 the resilient parts 4 of which hold the line against the top of the casing. In a modification, the parts 4 are formed with kinks to accommodate the line.
Patent GB-580692-A (GB)
Title: Improvements in shuttering structures for the building of concrete houses
IPC: E04G11/18
Filed: 1944-02-25
Abstract: 580,692. Casting concrete walls. WHATLING, J. L., and DOCHERTY, J. K. Feb. 25, 1944, No. 3570. [Class 20 (ii)] Shuttering for building the cavity and partition walls of concrete houses up to a determinate level at one operation and whjch is then removed for re-erection, course by course, comprises coplaner superimposed wall boards, horizontally spaced uprights engaging their outer faces, vertically spaced rails across the uprights, and securing pins passing through aligned holes in the boards, uprights, rails and through spacers, the outer rails for each main wall being secured at a house corner to the outer rails for the adjoining main wall. The shuttering may conveniently be of one third storey height. A cavity wall is formed between external shuttering 1, 2, Fig.1 secured by vertical battens 7 and horizontal rails 9, these having respectively vertical and horizontal slots at their points of intersection to receive the bolts tying the inner and outer shuttering together. The shutters are divided horizontally into halves to facilitate handling and are supported at mid-length by battens 6 on the shutters engaging battens 8 connected to the horizontal' rails 9. The core shuttering 3, 4 for the cavity is undivided vertically and is spaced by vertical bars 17 having pointed ends introduced into vertical guideways formed by angle members 18 on. the opposed faces of the shutters. The cores are spaced correctly relatively to the external shuttering by tubes 15, through which pass the bolts 11 tying the whole of the shuttering together. The internal corners are completed by vertical curved strips 19, Fig. 1, bearing against plates 22 on the shutters 2, and clamped thereto by screws 21. The outer corners are completed by curved strips 23 provided with uprights 23c engaging the rails 9 and the outer faces of the shutters 1. The core shuttering corners are completed by strips 25 coupled by countersunk headed pins 26 which limit the spacing of the strips 25, but which permit the strips to collapse towards each other when removed. Dovetail shaped cores 27, Fig. 9, are positioned on the core shuttering 3, 4 to produce undercut recesses 29, Fig. 10, for the reception of wall ties 30.
Patent GB-717752-A (GB)
Title: Improvements relating to typewriting machines
Inventor: FORD RONALD MAX
IPC: B41J3/24
Filed: 1951-02-14
Abstract: 717,752. Typewriters. FORD, Ltd., F. R., and FORD, R. M. Feb. 6,1952 [Feb. 14, 1951], No. 3585/51. Class 100(4). Ribbon guides.-Means for guiding a carbon ribbon 22 for use in a typewriter producing master sheets for a duplicating machine comprises in the form shown a strip or band 33 of flexible non-metallic material stretched along the face of the platen roller 12 between brackets 23, 24 on the carriage 29 so that its lower edge forms a guide for the ribbon. The tension in the strip 33 is such that it maintains itself in a straight line in spite of the rotation of the roller 12. The strip, in the form shown, consists of a series of rubber strands covered with cotton or the like and presents a rounded lower edge for abutment by the edge of the ribbon. The brackets 23, 24 are curved at 32 to mate with the roller and have shouldered recesses 38, 39 to locate loops 41 formed at the ends of the strip. Guide loops 42, 43 on the brackets locate the ribbon. Another similar strip may be provided on the other side of the ribbon to prevent displacement in the opposite direction. The strip may be inelastic and tensioned by other means, e.g. by the resilience of the brackets. Specification 706,172 is referred to.
Patent GB-216469-A (GB)
Title: Improvements in or relating to driving means for rotary tubular or drum-shaped grinding apparatus
IPC: B02C17/24
Filed: 1924-02-12
Abstract: 216,469. Rushen, P. C., (Krupp Akt.-Ges. Grusonwerk, F.). Feb. 12, 1924. Ball and like mills.-The toothed gearing for driving the tube or drum of rotary tubular or drum-shaped grinding apparatus, such as drum or tube mills, is separated from the apparatus and connected thereto by means of a rod which is coupled to the main driving-shaft of the tube or drum in such manner that it can follow any intended or accidental movements of the tube or drum to prevent any injurious effects to the toothed gearing. As shown, the toothed gearing, and preferably also the driving-motor, are enclosed in a casing 2 in a compartment 1 separated by a wall 5 from the compartment containing the mill 12, and the ends of the coupling-rod 8 are supported with a certain amount of play in sleeves 6, 10 mounted on the driving-shaft 3 and the end-cover 11 of the mill respectively. The sleeves have square bores to receive the ends of the rod 8, and the opening 4 in the wall 5 surrounding the sleeve 6 may be closed in any suitable manner to prevent dust from passing into the compartment 1.
Patent GB-432896-A (GB)
Title: Valve stem
IPC: B60C29/04
Filed: 1934-02-03
Abstract: 432,896. Tyre &c. valves. SCHRADER'S SON, Inc., A., 470, Vanderbilt Avenue, Brooklyn, New York, U.S.A.-(Assignees of Williams, S. T.; 45, Ontario Road, Bellerose, New York, U.S.A.) Feb. 3, 1934, No. 3638. Convention date, Dec. 29, 1933. [Class 135] [See also Group XXXIV] A valve-stem A for pneumatic tyres and other inflated articles is formed adjacent its head with an enlargement 4a Figs. 1 and 3, F, Fig. 8, which is embedded in a semicured rubber patch by which the device is secured to the air-tube, &c. In the form shown in Fig. 1, the enlargement 4<a> is enclosed between strips B, B<1> of unvulcanized rubber with or without additional strips b, 2<b> of similar material and fabric reinforcement C. In the modification shown in Fig. 3, the patch is formed of increased thickness between its centre and edge. In both these forms, the stem is provided with a second smaller enlargement 8<a> and is grooved on either side of the part 4a. In the modification shown in Fig. 8, the enlargement F having a beaded edge f is embedded in semi-cured rubber G over which an ordinary rubber pad J may be fitted and secured by the usual washer K and nut L.
Patent GB-785964-A (GB)
Title: Improvements in prompting apparatus
IPC: G09F25/00
Filed: 1956-02-06
Abstract: 785,964. Cover fastenings. SPEECH Q CORPORATION. Feb. 6, 1956 [Feb. 17, 1955], No. 3641/56. Class 44 [Also in Groups XV and XXIV] The cover of a prompting device is held in place by depressible buttons 18, 19 extending through holes in the cover. The buttons 18, 19 are mounted on flexible copper members 35, 36 secured to the end plates 30, 31 of the device.
Patent GB-239774-A (GB)
Title: Improvements in two-wheel trailer carriages for timber and other material
IPC: B62D63/06
Filed: 1925-02-09
Abstract: 239,774. Wickham & Norris, Ltd., and Morris, F. R. Feb. 9, 1925. Couplings for tractors.-Relates to a two-wheel trailer comprising a frame mounted on a wheel axle and having a draw-bar connected to the axle and to a shoe at the front of the frame so that the tractive force is exerted on the axle alone. A trailer of this kind is described in Specification 239,332. According to the invention, the drawbar e instead of being slidably adjustable as described in the above mentioned Specification, is hinged at h to the axle c so that when a pivoted front leg l is lowered to the ground and the trailer is backed, the frame a, b can turn about the hinge to raise the shoe for facilitating coupling and uncoupling the tractor and trailer. The, frame members a are provided with fixed extensions : i carrying the shoe j which embraces the draw-bar e and supports it by means of a pin k. The draw-bar is provided with a shock absorbing attachment f, g for connection to the tractor. When the pin k is removed and the leg l lowered, backing the trailer will disengage the shoa from the draw-bar.