baber/WOPTO huggingface dataset:
Patent GB-769207-A (GB)
Title: Improvements in or relating to electric incandescent filament lamps
Inventor: BOWTELL JAMES NORMAN
IPC: H01K1/50
Filed: 1954-03-30
Abstract: 769,207. Electric incandescent lamps. GENERAL ELECTRIC CO., Ltd. March 30, 1955 [March 30, 1954], No. 9302/54. Class 39(2) Electric incandescent lamps having a sealed blown glass envelope containing a coiled tungsten filament together with a filling of inert gas and designed to operate at a wattage lying between 25 and 150 watts inclusive with a voltage of not less than 200 across the filament, are provided with a "pear-shaped" envelope with the diameter d of the hemispherical or hemispheroidal end part less than that indicated for the wattage W in the curve C of Fig. 3, and have a filling of inert gas such that in normal operation of the lamp at the wattage W it attains a pressure lying between 1.5 and 3.0 atmospheres, the tungsten filament being so dimensioned that when dissipating the said wattage W the lamp has a life of not less than 1,000 hours and an initial efficiency which for a single coil filament exceeds that indicated for the wattage W by curve A in Fig. 1, and for a coiled-coil filament exceeds that indicated for the wattage W by curve B in Fig. 1. The said curves A and B are representative of the efficiencies hitherto obtained for a 1,000 hour life with known lamps of the type stated, whilst curve C shows the relation between the wattage dissipation and the diameters of the smallest bulbs hitherto used. An average lamp life considerably in excess of 1,000 hours can be attained by running the lamps at an efficiency which is not substantially greater 'that that indicated for a wattage W by the curves A or B of Fig. 1. As a result - of the high gas pressures employed in the lamps the proportion of nitrogen therein may be reduced to less than' 7 per cent without detracting from the flashing suppression property or, alternatively, the proportion of nitrogen can be increased beyond 7 per cent to increase the flashing suppression property, with possibility of an increased lamp life. Comparative dimensions are given of single-coil and coiled-coil filaments for use in blown glass lamp bulbs of the pear-shaped form shown in Fig. 2, and wherein d is 7 cm. and I is 10.5 cm. and the inert gas filling consists of argon with 1 per cent by volume of nitrogen, the total filling pressure being 1,100 m.m. of mercury at room temperature, and 1,6000 m.m. in normal operation. Specification 428,802 is referred to.
Patent GB-1161195-A (GB)
Title: Atomic Resonance Apparatus.
Inventor: VANIER JACQUES PAUL
IPC: H01S1/06
Filed: 1967-02-28
Abstract: 1,161,195. Resonance cells. HEWLETT. PACKARD CO. 28 Feb., 1967 [4 March, 1966], No. 9397/67. Heading G6P. [Also in Division H1] In atomic resonance apparatus random Zeeman resonance is effected magnetically whereby the hyperfine resonance line width is broadened and used to prevent obturing. In one embodiment, the Maser resonance cavity 3, is mounted within the cavity resonator 6, and automatic tuning is effected by the directional coupler 12. To effect periodical resonance line broadening, a transverse magnetic field is applied to the cavity 3, by the coils 13, energized from the noise source 14, which introduces line broadening random Zeeman transitions. The output of the Maser, from mixer 17, is compared with the line width modulator signal in detector 24, which produces an error signal applied to the diode 11, to tune cavity 6. In a second embodiment, the transverse magnetic field is produced by a single conductor within the cavity, carrying a variable current. The random function component of the magnetic field is produced by the random thermal motion of the gas atoms within the field.
Patent GB-749006-A (GB)
Title: Improvements relating to cam-operated copy-turning apparatus
Inventor: SMEDLEY JOHN
IPC: C07J75/00
Filed: 1953-04-07
Abstract: 749,006. Copy -turning. ROLLS-ROYCE, Ltd. March 23, 1954 [April 7, 1953], No. 9472/53. Class 83 (3). Copy-turning apparatus for turbine and compressor blades comprises a tool-carrier 20, Fig. 1, on a transverse slide 22 movable by a follower 24 and rotary pattern 11, on a saddle 21 traversed parallel to the lathe axis, in part by manual or automatic means, and in part by a cam and follower to effect a cycle of movements of the tool on each revolution of the work. The work 12 and pattern are driven in the same direction and speed from an external power source through a shaft 14 and gearing 16-18. An extension of shaft 13, 14 drives, through gearing 29, 30, a nut 27 engaging a lead-screw 26. The nut can be driven either manually through a hand wheel 28 or automatically through the gearing 29, 30, by sliding the latter gear into engagement with pinion 27A integral with the nut. The leadscrew is non-rotatively anchored to the saddle between springs 31, 32, which thus allows limited longitudinal movement of the saddle relative to the screw. A rod 33, Fig. 1C, is also anchored to the saddle and extends in the opposite direction to the lead-screw so that a pair of roller-followers 34, 35, secured to the rod are brought into engagement, at each end of the longitudinal traverse, with the opposite faces of a disc 36 secured to the work-spindle 19. The disc 36 has cams which move the saddle so that the tool cuts the inclined platforms of the blade shrouding. Two tools are carried in a turret holder 20 which is rotated by a handle 43 at the end of a cut in one direction so as to bring a tool of opposite hand into operation for the reverse movement. Two or more blades may be machined at the same time by changing the cam-disc 36 to give the required cyclic movements.
Patent GB-1090649-A (GB)
Title: Surface treatment for semiconductor devices
IPC: H01B3/10
Filed: 1965-03-05
Abstract: <PICT:1090649/C1/1> A glassy insulating covering is provided on a semi-conductor body by providing on its surface, a layer consisting only of an oxide of lead, heating sufficiently to cause reaction between the lead oxide and another oxide to form a glass covering, the temperature being insufficient to effect any rediffusion of impurities in the semi-conductor body.  In one example a mesa type body comprising a PN junction formed by diffusing boron into an N-type silicon body is provided with a film 6,000 <\>rA thick of silicon dioxide by pyrolytic decomposition of tetraethoxysilane and then a 1,000 <\>rA layer of PbO is provided by evaporation. The element is heated for 15 minutes at 650 DEG  C. to provide a glass film consisting of SiO2 and PbO, the lower part of the original silicon oxide layer remaining unchanged. The diode is completed by removing part of the film with acidic ammonium fluoride and depositing gold or aluminium to form one electrode, the other electrode being provided by nickel plating the base portion; in a further example, all the silicon described film is reacted with the lead oxide to form the glass layer.  In another example lead oxide, without any previous layer of silicon oxide, is provided on the surface of a silicon body and during heat treatment in an oxidizing atmosphere, the silicon under the lead oxide is oxidized so that glass is again formed by reaction between the lead oxide and the silicon oxide; such oxidation provides an etching effect on the silicon and may remove undesired impurities.  In a further example, lead is provided as a thin coating which is oxidized in a first oxidizing process and a second heating treatment is carried out to form the glass coating. Germanium or compound semi-conductor may be used in place of silicon.
Patent GB-1082562-A (GB)
Title: Improvements in or relating to a method of coating both sides of a plurality of workpieces by vapour deposition
Inventor: BAUSSOLA DIAZ ARMANDO
IPC: C23C14/50
Filed: 1965-03-05
Abstract: <PICT:1082562/C6-C7/1> In a vapour deposition process of coating both faces of a plurality of workpieces, such as lenses or electrical resistors, the workpieces are mounted on the periphery of a circular holder which rotates about a horizontal axis in a vacuum chamber which contains two vapour sources, one located inside the circular holder and the other outside and below the holder, and the rotating workpieces are cleaned ionically by glow discharge prior to coating. In a preferred embodiment shown in Fig. 3 the rotary holder 16 in the form of an annular ring is rotated by motor 14 and workpieces 18 are retained on the holder by spring clips 17. Vapour sources 19 and heater 20 are supported by base-plate 12' and electrodes 6 produce the glow discharge. A light source and photo-meter may be incorporated in the apparatus for measuring the deposition.  More than two vapour sources may be used and they may be adjusted in a horizontal or vertical plane, the horizontal adjustment being effected from outside the chamber.
Patent GB-218719-A (GB)
Title: Improvements relating to davits and cargo derricks for ships and the like
IPC: B63B23/04
Filed: 1923-04-06
Abstract: 218,719. Blocksidge, E. W. April 6, 1923. Davits.-Davits and cargo derricks for ships comprise two or more arms from each of which a boat or load is suspended, the arms being connected in the manner of four-bar kinematic chains so that the angular motion and angle between the arms is varied in a predetermined manner. Davit arms C, D carry boats A, B on falls a, b and are pivoted at c, d and connected by a link E. The arms are preferably of the braced type and of such section that the arm C will rest in the arm D whilst the edge 0 of the former will contact with the back of the latter to form a stop when the arms are outboard. Stops L, M upon which the arms rest when outboard are also provided, and a stop N adapted to engage the bottom of the arm C is fitted for holding it when swung over its dead centre in the stowing position. The falls have stops which operate when the boats are raised to the position as in Fig. 3, further motion of the falls acting to luff the davits. The tops of adjacent arms D are connected by beams.
Patent GB-1334829-A (GB)
Title: Harvesting machine having equipment for automatically operating  the machines power-steering system
IPC: A01D41/127
Filed: 1972-03-01
Abstract: 1334829 Steering mechanism for a harvester KLOGKNER-HUMBOLDT-DEUTZ AG 1 March 1972 [2 March 1971] 9534/72 Heading A1F [Also in Division B7] A harvester is automatically steered by a mechanism which ensures that one edge of the harvester follows the line of the crop. The steering mechanism comprises a light beam which impinges on a photocell which serves to operate a series of relay switches, which connect a current source to valve operating means and this operates a hydraulic piston attached to the rear wheels of the harvester. If the light beam is interrupted due to the harvester deviating from its course then the piston is automatically operated and this moves the wheels until the original course is again followed. Photocell systems 22, 23 in Fig. 1 are positioned on swath dividers 4, 5 and Fingers 7, 8 and 19, 20 of cutter bar 3. The following description refers to system 22 which is shown, in Figures 2 and 3 in its normal operating condition. In this condition beam 29 is unobstructed whilst beam 30 is obstructed by the upstanding crop. If the harvester deviates to the right from its prescribed course Fig. 1, then beam 29 which originates from source 24 via lens 25 and prism 26, Fig. 2, will be interrupted by parts of standing crop 21. Photocell 27 receives no signal and relays 38, 39 are released from their operative condition, which is shown in Fig. 3. Relay contact 63 opens and relay contact 68 closes, so that current flows to electromagnetic actuator 59 which shifts the position of three-position valve 53, and hydraulic fluid flows from reservoir 57 via pump 55 into cylinder 50. The electromagnetic actuator responds at a rate related to the speed of the harvester by the use of a tachogenerator 66 in the circuit. Rear wheels 2 are turned to the right by piston 49, and this steering action is continued until beam 29 is again unobstructed, whilst beam 30 is still interrupted. If photocell system 23 is required instead of system 22 then the systems can be changed over by operating switch 71, Fig. 3. This causes relay contacts 34, 40 of relay 46 to connect amplifiers 35, 41 to the photocells of system 23 via terminals 47, 48. Operating switch 71 also causes relay 70 to operate and reverse leads 60, 65 which normally connect to actuators 58, 59 respectively.
Patent GB-204350-A (GB)
Title: Improvements in spinning and twisting machines
IPC: D01H1/241
Filed: 1922-04-03
Abstract: 204,350. Potter, J. C. April 3, 1922. Driving arrangements; tin-rollers; guards and protectors for threads.- A group of spindles arranged in two parallel rows is driven by a single flat belt 16, which moves up and down with the spindles and is driven by a broad pulley 15 secured to a shaft 30 parallel to the spindles. The belt 16 passes round guide pulleys 18 and round a tension pulley 19 mounted on the spindle carriage, the pulley 19 being so arranged that it can be readily adjusted when it is desired to reverse the direction of rotation of the spindles. The pulleys 15 for the various groups of spindles are driven from a common shaft 33 by helical gears 34, 32. The ring-rail has an upturned flange 37, and from its front edge is suspended a board 38 hinged at 39 to protect the bobbins from lint.
Patent GB-311811-A (GB)
Title: Improved means for the protection of electrical installations
IPC: H02H3/32
Filed: 1928-01-17
Abstract: 311,811. Fennell, W. Jan. 17, 1928. Divided on 311,792, [Class 38 (iv), Electric supply and transmission systems &c.]. Fusible cut-outs.-A domestic or like installation with one supply wire earthed is protected against an earth fault by means of differential relays which operate upon a difference of current in the flow and return wires to break a fuse mechanically or melt it by connecting it to earth or to the opposite pole, the fuse being arranged to melt also on overload in the circuit. A suitable arrangement of cut-out is shown in Fig. 2, in which the fuse-wire f carried in the bridgecarrier FB fuses in the ordinary way on overload and on faultis fractured by the action of the differential relay R. This relay on fault attracts a catch a and releases a lever pivoted at h so that a compression spring j forces a plunger across the fuse wire. Alternatively, the wire may be electrically fused by connecting the plunger to one of the poles of the circuit.
Patent GB-730247-A (GB)
Title: Improvements in the manufacture of artificial filaments
IPC: D01D5/14
Filed: 1953-04-09
Abstract: <PICT:0730247/IV (a)/1> In apparatus for the wet-spinning of artificial filaments, a vertical spinning funnel 3, coaxial with the spinneret 1, depends through the base 7 of the coagulating bath 2, and the filaments 6 are wound up on a roller 5 mounted in such a position that the axis of the funnel is tangential to the roller periphery, the distance of the roller below the lower end of the funnel being at least equal to the length of the funnel and the maximum distance being limited by the condition that the bath liquor leaving the lower end of the funnel must remain in the form of a continuous jet 4 until it meets the periphery of the roller.  The apparatus enables spinning to be effected at a very high speed and promotes improved filament characteristics.  The spinning of viscose rayon is described.
Patent GB-396663-A (GB)
Title: Improvements in and relating to single roll grinding mills
IPC: B02C4/22
Filed: 1933-03-30
Abstract: 396,663. Roller - and - breast mills. HOLMES, L. G., 8, Avenue Albert, Huy, Belgium. March 30, 1933, No. 9642. Convention date, July 20, 1932. [Class 59.] In a roller-and-breast mill the hopper is arranged on the side of the roll, one wall of the hopper being arranged in the vertical axis of the roll to form a guide for the grinding bar and the lower wall of the hopper being inclined to the roll to form the bottom of the hopper on which the heavy materials are deposited. As shown the hopper 11 has a side 10, against which the breast bar 7 is guided, in the vertical axial plane of the roller 5 and an inclined side 11<1> which forms the base of the hopper, the coarse material collecting in the space 19. The hopper is hinged at 12 and is secured in position by hinged bolts 14. The breast is carried in a bracket 6 secured to the top caps of the roller bearing and a tray 17 with adjustable scraper 18 collects the ground material. The roller 5 is mounted on sliding bearing blocks 3 which are adjusted by screws 15 when the end 11<11> of the inclined side of the hopper becomes worn.
Patent GB-681970-A (GB)
Title: Improvements in and relating to pressure responsive control switches for clothes washing machines
IPC: D06F39/08
Filed: 1951-04-25
Abstract: 681,970. Actuation of switches. BRITISH THOMSON-HOUSTON CO., Ltd. April 25, 1951 [May 9, 1950], No. 9648/51. Class 38 (v) [Also in Group VIII] A liquid level responsive switch 38 is mounted in the base of a clothes washing machine tub 6 (see Group VIII) and is operated through a flexible diaphragm 20 and pivotally mounted lever means 36. In one example (Fig. 2) the whole tub 6 is of rubber or like flexible material, and the diaphragm 20 is integral with but thinner than the rest of the tub. The diaphragm 20 is convoluted at 21, and provided with ribs 22 and a nose portion 23 projecting into a chamber formed by a flanged ring 26 and an annular wall 24 which is integral with the tub 6. The nose 23 engages a portion 35 of the lever 36 which pivots about a shaft 33 to actuate a plunger 37 of switch 38. The switch itself is mounted on a web 31 depending from the ring 26, and the water level at which the switch will operate can be adjusted by bending the web 31. Fig. 4 shows a modification in which the switch 38 is mounted on a metal tub 42 provided with an opening 43. The actuating membrane comprises a pressure sensitive area 46, a side wall 44, and a flange 45 secured between the switch housing 26 and the tub 42 by means of screws 49. The area 46 is convoluted to provide flexibility and has ribs 47 and a nose portion 48. Specification 620,210, [Group VIII], is referred to.
Patent GB-464879-A (GB)
Title: Improvements relating to collapsible or foldable boxes or cartons
IPC: B65D5/34
Filed: 1936-04-02
Abstract: 464,879. Boxes &c. SIMONS, M. G. (Hamilton, A. D.) April 2, 1936, No. 9742. [Class 18] A collapsable box is formed from two blanks the smaller constituting the lid 10, which may have a window 11 and a tuck-in flap 12, the rear wall 13 and a deep base-flap 14, while the larger blank constitute. the front wall 20, the side walls 21, 22, which may have flaps 26, 27 attached thereto, and deep base flaps 23, 24 25, the flaps 14, 23, 24 25 co-operating, wher the tongues 40 are in serted into the slots 18, to form a base for. the box composed throughout of a double thickness of material. The blanks are attached together by the lugs 28 on the longer blank being stapled &c. to the ends of the rear wall 13 of the smaller blank. A crease line 39 may be formed so that the opened box may be folded flat. Holes 19 allow of the threading therethrough of a tying string.
Patent GB-792764-A (GB)
Title: Improvements in grate-cooling arrangements for steam generators
IPC: F22B21/36
Filed: 1955-04-04
Abstract: 792,764. Cooling furnace grates. VORKAUF, H. April 4, 1955 [April 5, 1954], No. 9771/55. Class 51 (1). [Also in Group XIII] In the grate-cooling arrangement shown in Figs. 1, 2, each side wall lower header 1 of the combustion chamber wall tubular cooling system is screened by horizontally disposed cooling tube sets 7, 7a, the former passing along the side wall from its centre to its front edge whilst the latter pass from the centre to the rear edge. The tube sets are connected to the bciler circulation through riser tubes 9 and appropriate downcomers 2, 4 and are protected by cast-iron plates 10, the space between the header and the tubes being filled with heatinsulating material. In a modification, the cooling tubes are of square cross-section. Two or more riser tubes may be connected to each cooling tube, the risers being distributed at uniform intervals along the tube length. Each cooling tube set may comprise a group of more than two tubes, the tubes being disposed in superposed arrangement.
Patent GB-181868-A (GB)
Title: Improvements in or relating to machines for moulding blocks, bricks and the like of concrete or other material
IPC: B28B1/04
Filed: 1921-04-02
Abstract: 181,868. Blackshaw, W. R. April 2, 1921. Presses; moulds.-In a machine for moulding building-blocks in which the mould box is conveyed on rails to and away from a ram-plate, the rails engage the box directly when in position under the ram and undue strain on the rollers is thereby avoided. The mould 3, when under the ram-plate 5, rests on rails 2 engaging recesses 4 and rear rollers 6 and a front roller 7 are mounted thereon so that in this position the latter is lower than the former. The roller 7 rests on the end of a lever 8 pivoted on bearings 10 so that on depression of the lever the roller 7 is raised and the mould box is lifted from the rails and may be withdrawn on the rollers R, 7, the levers 8 acting as a guide rail for the roller 7 and being held in an horizontal position by the bracket 29. The ram-plate 5 is supported from a plate 17 carried at its corners on vertical rods 18 sliding in guides 19, and is reciprocated by a hand-wheel 25 through gearing 32 and eccentrics 31 mounted on a shaft 23 and connected to the rods 18 by a spindle 21 and cross-rods 20, adjustable thereon by nuts 26. The mould box comprises a fixed base and back, side walls 14 hinged thereto, and a front wall 13 hinged to the base 12- The back, front wall and ram plate are grooved to accommodate division plates.
Patent GB-610180-A (GB)
Title: Lawn mower
IPC: A01D34/47
Filed: 1946-03-29
Abstract: 610,180. Lawn-mowers. KING, J. T. March 29, 1946, No. 9821. [Class 6(ii)] A motor lawn-mower of the rotary cutter cylinder and ledger-blade type is provided with a fluid transmission between the motor and the cutter cylinder. The land wheels 41 of the machine are freely mounted on bearings 43 on an axle 1 on which a rotary cutter cylinder is also freely mounted. The cylinder comprises two half-bodies 7 having end heads 8 containing liquid-holding pockets 9. Keyed to the axle adjacent to the heads 8 are complementary caps 24 also provided with pockets 25, the caps 24 and heads 8 forming a fluid drive for transmitting rotation from the axle to the cutter cylinder. Rings 19 are mounted on the heads 8 and carry lugs 20 for supporting blades 23, the cylinder being completed by end plates 29 screwed to the rings. Side frames 35 freely mounted on the axle support a shell plate 44 which carries an electric motor 47 or an engine which drives the axle through a belt 49 and pulleys 38, 48 The twc halfbodies 7 are bolted to the hub 15 of a centre support which includes fan-like blades 17 adapted to blow cuttings rearwardly into a grass receiving bag, Fig. 3 (not shown). The ledger blade, Fig. 9 (not shown), is adjustably mounted on trunnions.