baber/WOPTO huggingface dataset:
Patent GB-936815-A (GB)
Title: Method of diffusion
IPC: C23C8/00
Filed: 1961-08-15
Abstract: 936,815. Semi-conductor devices. HUGHES AIRCRAFT CO. Aug. 15, 1961 [Nov. 22, 1960], No. 29466/61. Class 37. Donor or acceptor impurity in the gaseous phase is diffused into semi-conductor body 2 (Fig. 1), in a container 6 with restricted ports 14, 16 at its ends, mounted entirely within an open-ended tube 24. The container of quartz, graphite or alumina may be formed of a base part 6 with internal slots to accommodate semi-conductor wafers 2, and a cover 8 fitting tightly over it. When gas is forced to flow rapidly through the tube it flows freely through the container but with a reduced rate of flow the vapour pressure within is sufficient to effectively prevent entry of gas through port 14. The method of using the apparatus as described below, thus has some of the advantages of both methods of gaseous diffusion hitherto used, i.e. the gas flow and sealed tube methods. In a typical process for diffusing boron into N, P or intrinsic type silicon wafers boron trioxide powder 20 is placed in the container, and after purging the apparatus with a fast current of argon, is heated to 1000‹ C. It vaporizes and heating is continued until the container walls are saturated with boron. The silicon wafers are then placed in the container and the boron powder removed, if desired. After again purging with a fast flow of argon the flow rate is reduced and the container and contents heated to 1100‹ C. to diffuse boron into the wafer. The preliminary step of saturating the container walls with boron ensures a more predictable concentration of boron at the wafer surfaces in the early stages of the diffusion step, but may be dispensed with especially if an impurity such as antimony, which is less readily absorbed by the wall, is used.
Patent GB-661645-A (GB)
Title: Improvements in sensitive photographic emulsions
IPC: G03C1/10
Filed: 1949-11-18
Abstract: 661,645. Photographic emulsions. KODAK, Ltd. Nov. 18, 1949 [Nov. 18, 1948], No. 29569/49. Class 98 (ii). The speed of a light-sensitive silver halide emulsion is increased by the incorporation of a compound of the general formula H 2 N(RNH) n  RNH 2 , wherein n is 1 to 5 (preferably 1 to 3) and R is an alkylene chain of from 2 to 4 carbon atoms, or a water-soluble non-desensitizing salt thereof. Compounds specified are diethylene triamine, triethylene tetramine, and tetraethylene pentamine. The emulsion may also contain a sulphur sensitizer incorporated before, simultaneously with, or after the speedincreasing compound, and may also contain an optical sensitizer. The compound may be added during digestion of the emulsion, so that further digestion occurs after the addition. At least one emulsion layer of a colour photographic multilayer material may be so prepared. In example 1, the effect on the fog, gamma, and speed of a gelatine emulsion peptized with a gelatine derivative as described in Specification 649,545, of additions of diethylene triamine, triethylene tetramine, and tetraethylene pentamine is shown in a table. In example 2, the effect of additions of allyl thiourea, of allyl thiourea and triethylene tetramine, and of allyl thiourea and tetraethylene pentamine is similarly shown in a table. In examples 3 and 4, similar tables are given. The speed increase is effective at a fairly low pH, such. as 6.0, and the increase obtained with a sulphur sensitized emulsion is usually considerably greater than would be expected from the speed increases obtained by the use of the individual sensitizers. The emulsion binder may also be polyvinyl alcohol, a copolymer of polyvinyl alcohol, or a partially hydrolysed cellulose ester (e.g. cellulose acetate). Specification 235,211, [Class 98 (ii)], also is referred to.
Patent GB-617023-A (GB)
Title: Improved spare wheel carrier for motor vehicles
IPC: B62D43/04
Filed: 1946-10-04
Abstract: 617,023. Luggage holders. VAUXHALL MOTORS, Ltd., and WESTCOTT, F. Oct. 4, 1946, No. 29592. [Class 103 (ii)] A spare wheel carrier comprises a tray 3 pivoted at 4 which forms with a part of the vehicle a receptacle for the spare wheel, the opening and closing movements of the tray being controlled by a flexible cable 5 and toggle lover mechanism 11. The cable 5 may be continuous and any stretch may be taken up by an adjustable cleat 6 and is led over guides 7, 8 and tubes 9, 10 to opposite arms of a lever 11 pivoted at 12. The lever 11 is fixed to a hand lever 13 in the boot held in the closed position by a clip 14. Release of the hand lever from the clip and rotation in an anticlockwise direction uncrosses the cable 5 to lower the tray. The tray may be opened by spring pressure and a cross-bar 16 at the top of the container presses on the tyre in the closed position of the tray. A guard 17 around the tray prevents entry of mud &c.
Patent GB-172609-A (GB)
Title: Improvements in means of regulating electric motor cascades
IPC: H02K17/34
Filed: 1921-11-07
Abstract: 172,609. Siemens - - Schuckertwerke Ges. Dec. 9, 1920, [Convention date]. Void [Published under Sect. 91 of the Act]. Alternating-current induction machines.-In cascade control the range of speed regulation, the value of the slip, and the output of the main and secondary machine are so chosen that the secondary machine is approximately equally loaded at the upper and lower speed limits. The Specification deduces the conditions theoretically and gives a numerical example for a main machine of 100 kilowatts and a secondary machine of 50 kilowatts. The invention is stated to be applicable to a combination with an electrically driven secondary machine.
Patent GB-304405-A (GB)
Title: Improved portable writing desk
IPC: A47B31/06
Filed: 1927-11-05
Abstract: 304,405. Bartlett, A. J. Nov. 5, 1927. Portable writing-desks.-A portable writing- desk to facilitate writing when travelling in a moving vehicle comprises an upper pad or sheets supporting plate mounted resiliently upon a base member by means of a series of springs or one or more blocks of sponge rubber so as to be capable or both lateral and substantially vertical movement relatively to the base. In one form, Fig. 1, two plates or boards 1, 2 are connected together at their edges by strips 4 of tape or other flexible material, and light helical springs 3 are arranged between them adjacent to the edges, the ends of the springs not necessarily being connected to the boards. Alternatively, or in addition to the tapes, a covering of leather or the like adapted to secure sheets of blotting-paper may be applied to the ends of the device. By connecting the ends of the springs to the boards the tapes &c. may be dispensed with. A box or casing may be provided to receive the desk, which is inserted laterally therein after compressing the springs. In another form, Fig. 3, the upper plate 7 is suspended at its corners by springs 10 connected to uprights 8 on a base plate 9 which may be provided with a central aperture 11 to reduce its weight; this form may be modified by providing uprights or corner supports which are either hinged' to the base and held by struts, or fit removablv into sockets in the base. In a further modification upper and lower plates with interposed vertical springs have a co-operating auxiliary pad or plate which may move freely in any direction upon the surface of the upper plate by providing balls or smooth bosses upon either of the contacting surfaces. The springs may be enclosed so as to operate in a vertical direction only.
Patent GB-318776-A (GB)
Title: Improvements in and relating to vehicle chassis
IPC: B60G9/00
Filed: 1928-10-15
Abstract: 318,776. Fraser, J. Oct. 15, 1928. Frame construction; guiding vertical play; springs, arrangement of.-The chassis frame A is supported by levers 10 pivoted at 11 to the axles 3 and connected at one end to the frame by pins and slots 8, 9, and at the other end to torsion bars 14, which extend across the vehicle and are secured at their other ends to the axles. Rods 1 secured to the axles extend through the frame A and are fitted with springs or rubber cushions 5, 5<1>. The axles are connected together by bars 16.
Patent GB-297064-A (GB)
Abstract: 297,064. Hõnel, C. Sept. 13, 1927, [Convention date]. Tickets, issuing. - For printing and differentiating fare tickets the printing roller is provided with a rotatably adjustable type insertion which can be turned from outside the casing for bringing types out of and into printing position, the counters which register the different types of ticket thus produced being operated by cams which are turned by the type insertion into and out of operative position. In a casing 1 are mounted a printing roller 2, counter-printing roller 3, inking roller 4, driving shaft 5, two counters 6, 6<1> and a paper carrying drum 7. The roller 2 carries in known manner an exchangeable printing block 8 and contains a number of externally adjustable type wheels for hour, day, section &c. The roller 2 is provided with a block-shaped type insertion 9 which is adjusted from the outside by means of a lever 10 acting through toothed wheels 11, 12, the lever being held in either of its two positions by a spring. The type insertion 9 has at one side a cam 14 and at the other a cam 14'. These are angularly displaced so that when the block 9 is turned into either position one only of the cams 14, 14<1> projects beyond the surface of the roller and on the latter being turned by the handle 5, the counter 6, or 6<1> is actuated by engagement of the projecting cam with the wheel 15 or 15<1> of the corresponding counter. The lever 10 is provided with a protecting cover or cap recessed to form stops for the two positions of the lever. Access to the paper roll may be gained by opening a flap which is provided with a slot through which the roll may be observed. Cams may be disposed on both sides of the type insertion so that the counters actuated thereby may be arranged in pairs within reach of the cams, and when several kinds of tickets are to be printed, the said pairs of counters can be laterally displaced to each other to the extent of the thickness of a cam only, thus keeping the apparatus of small width.
Patent GB-1357211-A (GB)
Title: Fibre separating device for a break spinning unit of a spinning  machine
IPC: D01H4/32
Filed: 1971-06-24
Abstract: 1357211 Break spinning VYZKUMNY USTAV BAVLNARSKY 24 June 1971 [25 June 1970] 29753/71 Headings DID and D1N A fibre separating device for a break spinning machine comprises a path for the fibres extending between wall 111 and combing out roller which continuously increases from a minimum width at the combing out zone A to the feed channel 13, and at least one at vent 17 at the combing out zone A or immediately adjacent thereto on the doffing side. As shown an air pressure source 9 is connected with the increasing cross sectional area section of the duct so as to increase the air flow velocity.
Patent GB-1009377-A (GB)
Title: Improvements in or relating to paper cutting machines
IPC: B26D7/06
Filed: 1962-08-02
Abstract: 1,009,377. Paper - cutting machines. SCHNEIDERWERK LUBECK-, GRAPHISCHE MASCHINEN-UND APPARATEBAU G.m.b.H. Aug. 2, 1962 [Aug. 8, 1961], No. 29761/62. Heading B4B. A stack of sheets to be cut in a paper-cutting machine is fed towards a knife in a frame 1, Fig. 1, by a back gauge 4 driven by means 6 which is located at one side of the table. As shown in Fig. 3, the gauge is driven between guides 5 by a leadscrew 6. Part of the table is formed by a square plate 7 which can be raised above the level of the gauge by an electric or hydraulic motor 11 and then rotated by a motor 9 so as to turn the stack through 90 or 180 degrees ready for the next cutting operation; alternatively, the plate may be raised and rotated manually. Compressed air may be expelled through apertures in the table surface to facilitate returning the stack to the plate 7 after a cutting operation. The gauge 4 may be pivoted about an axis 14 so that it can be swung to a vertical position clear of the table and thus allow the stack to be placed on the rear end 13; this arrangement would allow the plate 7 to be arranged behind the rear end position of the gauge. The machine may be automatically controlled.
Patent GB-1134585-A (GB)
Title: Process for the joint manufacture of 2,2,3-trichlorobutane and 1,2,3-trichlorobutane
IPC: B60K15/06
Filed: 1967-06-28
Abstract: 1,134,585. Trichlorobutanes. KNAPSACK A.G. 28 June, 1967 [22 July, 1966], No. 29773/67. Heading C2C. 2,2,3- and 1,2,3-Trichlorobutanes are produced simultaneously by reacting 2,3-dichlorobutane with chlorine, reaction being effected by mixing the 2,3-dichlorobutane with 5 to 1000 p.p.m. of sulphur and/or one or more sulphur chlorides (SC1 2 , S 2 Cl 2 , SOCl 2  or SO 2 Cl 2 ), heating the mixture to 60‹ to 150‹ C. and treating it with chlorine. The process may be carried out by introducing a solution of sulphur and/or a sulphur chloride and liquid or gaseous chlorine into a tower provided with heat exchangers. The trichlorobutane isomers may be separated from each other and from unreacted 2,3-dichlorobutane by distillation. Tetrachlorobutanes are obtained as by-products.
Patent GB-445871-A (GB)
Title: Improvements in bodies for motor vehicles
IPC: B62D25/20
Filed: 1934-10-18
Abstract: 445,871. Vehicle bodies. PIMM, A. W., 36, Lodore Road, Newcastle-on-Tyne. Oct. 18, 1934, No. 29783. [Class 108 (i)] Commercial vehicles are constructed with metal trough-shaped members laid longitudinally on the chassis frame members and adapted to support the floor boards. The longitudinal metal trough members 1 are secured to the chassis longitudinals 2 by brackets 5, the trough member having sides which are outwardly inclined and cross braced at intervals by braces 4. The floor boards &c. 3 are laid upon the outturned flanges of the upper edges and where it is desired to secure pillars or door posts in position brackets 6 are employed, secured to the chassis, trough members and pillars 7. The trough members may be corrugated or provided with flanged apertures for strengthening and lightening purposes. The trough members are adapted to carry additional load, tools, &c. and either trough member, when damaged, may be replaced without disturbance of the other.
Patent GB-1246517-A (GB)
Title: A rotary regenerative heat exchanger
IPC: F28D19/04
Filed: 1969-06-12
Abstract: 1,246,517. Gas turbine plant. MOTORENUND TURBINEN UNION MUNCHEN G.m.b.H. June 12, 1969 [June 12, 1968 (2)], No.29926/69. Heading F1G. [Also in Division F4] A rotary regenerative heat exchanger comprises an annulus defined by a pair of mutually spaced circular walls, a plurality of heat exchange elements extending between the walls, each element being disposed within a respective duct whereby in operation gas flowing through the ducts will flow through the elements to effect heat exchange between the elements and the gas. The invention is described with reference to a heat exchanger 10 of a gas turbine engine, the rotational axis 11 of the exchanger being disposed at an angle to the axis of the engine. The heat exchanger drum comprises a series of circumferentially spaced matrices 21 each associated with a pair of guide members 22 which define ducts so that the exhaust gases flow outwardly as indicated by arrow 15 in Fig. 3 while the pressurized air flows inwardly as indicated by the arrow 27. The inner and outer walls of the drum are formed by grids 19, 20 while the side walls 17, 18 are closed walls. In Figs. 5 and 6 the exhaust gases and pressurized air flow axially through the drum instead of radially as in Fig.3. The drum comprises a plurality of circumferentially-spaced matrices 36 each associated with a pair of guides 37 which define ducts so that the exhaust gases flow as indicated by arrow 40, Fig. 6, and the air flows as indicated by arrow 42. The side walls of the drum are perforated at 35 while the inner and outer walls 31, 32 are closed. The turbines exhaust gases pass to space 14 and then radially through the drum, finally discharging through an exhaust outlet. Air from the compressor passes to space 26 then radially inwardly through the drum being pre-heated thereby and then passing to the combustion chamber. The two spaces are separated by a diaphragm and seal devices, 29, 28 adjacent the inner and outer peripheries of the drum.
Patent GB-1180895-A (GB)
Title: Telescoping Drill Pipe.
IPC: E21B7/02
Filed: 1968-06-24
Abstract: 1,180,895. Drilling. GARDNER-DENVER CO. 24 June, 1968 [5 Oct., 1967; 13 March, 1968], No. 29985/68. Heading B3C. A telescoping drill pipe assembly for a drilling machine of the type used for drilling blast holes in mining, quarrying or geophysical exploration comprises an outer pipe 22, an inner pipe 26 telescopically received in the outer pipe, and hydraulically-actuated frictional coupling means 28 disposed between the pipes 22, 26. The drill pipe assembly is mounted on a portable rig having a track-laying undercarriage 10, a hinged mast 12 and an operator's platform 40. A carrier 20 vertically displaceable on the mast 12 carries a top drive assembly comprising an hydraulic motor 16 and a gear-box 18. The pipes 22, 26 are journalled in stabilizer bearings 34, 36 and the upper end of the inner pipe is connected by a coupling 30 to an output shaft 32 from the gear-box 18. Internal splines 54 at the top of the outer pipe 22 engage grooves 56 extending along the inner pipe 26 to transmit drilling torque between the pipes. The frictional coupling means 28 comprises synthetic rubber rings 66 which are stacked alternately with metal rings 64 and are fitted around the inner pipe 26 so as to slide within the outer pipe 22. The rubber rings 66 are expanded to engage tightly within the outer pipe 22 so as to couple the pipes by an axial force applied by an annular piston 82 disposed between the inner pipe 26 and a cylinder barrel 76 secured by a pin 78 to a cylinder head 74 secured to the end of the inner pipe. Fluid pressure is selectively applied to the piston 82 from an hydraulic control circuit 112-126 through axial and radical passages 104, 102 in the cylinder head 74 and a pipe 52 connected by a rotary union at its upper end to a cap 50 on an inlet pipe 42. Hole cleaning air supplied through a pipe 46 to the inlet pipe 42 passes down the interior of the inner pipe 26 around the pipe 52, through radial holes 106 in the cylinder head 74 to the interior of the outer pipe 22 and through holes 60 in a threaded sub 58 to the drill bit 24. A mechanical coupling (Fig. 9, not shown) is engageable with grooves 120, 130 in the pipes 22, 26 to couple the pipes in the event of failure of the coupling means 28. In another embodiment (Figs. 10-14, not shown) the drilling torque is transmitted between the pipes by the frictional coupling means, the rubber rings 66 being replaced by rings (266) made of a polyurethane elastomer and positively engaged with splines (273) on the inner pipe. A seal (225) between the top of the outer pipe and the inner pipe prevents ingress of foreign matter.
Patent GB-154571-A (GB)
Title: Improvements relating to electric circuit closing and breaking devices
IPC: H02J7/00
Filed: 1920-10-25
Abstract: 154,571. Bouteille, E. Nov. 26, 1919, [Convention date]. Electro-magnetic switches.-In a switch, having shunt and series operating coils, for connecting a battery automatically to a dynamo when its voltage is adequate for charging, the shunt coil is shunted by a resistance when the circuit is closed, thereby reducing the current therein and rendering the switch more sensitive to reductions in the current in the series coil. The switch is so arranged that, when in the open position, the battery is completely disconnected from the dynamo. As shown in the figure, the armature carries main bridging contacts 8, 9 and flexible sparking contacts 10, 11 co-operating with fixed contacts 6, 7. The shunt coil 3 in series with the adjusting resistances 13 first closes the switch when the dynamo voltage reaches a certain value, and; when closed, the switch is maintained closed against the action of a spring by the main series current through the coil 4 and by the shunt current in the coil 3 reduced by the shunt resistance 14 introduced when the contacts 6, 10 come into engagement. The flexible sparking contacts ensure that the armature is withdrawn a substantial distance from the magnets before the full current in the shunt coil is restored, thereby preventing hunting of the armature.
Patent GB-427264-A (GB)
Title: Improvements in or relating to sliding doors, partitions and the like
IPC: E05D15/06
Filed: 1933-10-30
Abstract: 427,264. Sliding doors. ROUSE, E. E., 100, Bayham Street, Camden Town, London. Oct. 30, 1933, No. 30120. [Class 20 (iii)] Sliding-doors are suspended from two channel members 2 by a T-shaped member having studs 10 engaging socketted runners 11 in the channels. The channels 2 are spaced by sleeves and a channel 6 if desired, and supported by bolts 4 in the frame or wall, and the T-shaped member may comprise angles connected to a triangular plate 8 recessed into the door and secured by bolts 14 and socketted nuts. For heavy doors, the channels are secured by a flat plate 15 and a bent plate 16 bolted thereto and to the wall, as shown in Fig. 4, and the T-shaped member may be replaced by a plate 19 and bolt 18 adjustably bolted by nut and lock-nut to the door, and for folding doors the bolt 18 forms the hinge pin of a pair of sections.
Patent GB-648088-A (GB)
Title: An improved tripping device for an electric circuit breaker
IPC: H02H3/33
Filed: 1948-11-19
Abstract: 648,088. Automatic circuit - breakers; electromagnetic relays; protective cut-out arrangements. BRITISH INSULATED CALLENDER'S CABLES, Ltd. and MASSEY, S. Nov. 19, 1948, Nos. 30136/48 and 1060/49. [Class 38(v)] The trip coil 11 of a circuitbreaker 4 is energized on closure of switch 10 by a relay coil 9, the coils being mounted coaxially close together with the coil 11 uppermost. The coil 9 is connected to the secondary 8 of a differential current transformer 5 having two primaries 6, 7, and when energized moves its armature 20 about pivot. 21 to the dotted-line position to close the contacts 23, 24, of switch 10. Energization of coil 11 lifts a core 16 which strikes a tripping pin 18 to open the circuit-breaker. The coil 11 is preferably normally energized to a small extent by connecting a high resistance 12 across the switch 10, so that only a small current in coil 9 is necessary to move the armature 20. The latter is in any case maintained in its displaced position by the joint effect of coils 9, 11 until the breaker is opened. The coils are enclosed by a metal frame 25-27 which, carries the breaker.
Patent GB-228663-A (GB)
Title: Improvements in wet gas meters
IPC: G01F3/30
Filed: 1923-11-30
Abstract: 228,663. Fox, T., and Robinson, S. Nov. 30, 1923. Gas-meters.-In a wet gas-meter having its internal mechanism enclosed in a single compartment, the vent pipe 8 from the water reservoir 1 dips into a small chamber 12 which communicates with a depending portion 6 of the water reservoir through a small aperture 13 and with the main water space through a small aperture 14. The water level around the vent pipe is thereby prevented from being subjected to the periodical fluctuations in level in the main water space. The meter is fitted with the usual floatcontrolled gas inlet valve 3 and with an overflow reservoir 9 having an inlet pipe 11 and draw-off plug 10.