baber/WOPTO huggingface dataset:
Patent GB-902575-A (GB)
Title: Improvements in or relating to photo conductive devices and methods of manufacturingsuch devices
IPC: H01J29/08
Filed: 1958-12-08
Abstract: 902,575. Photo-conductive devices. GENERAL ELECTRIC CO. Dec. 8, 1958 [Dec. 23, 1957], No. 39477/58. Addition to 852,963. Class 37. A target plate suitable for use in an X-ray sensitive vidicon tube is made by anodizing a sheet of aluminium; depositing on the anodized surface a film of a metal the oxides and lead salts of which in the pure state have a resistivity not exceeding 10<SP>10</SP> ohm. cm. and thereafter coating the film with lead oxide. The metal film, which is preferably deposited by electroplating may consist of a metal having a coefficient of expansion reasonably well matched with that of aluminium and lead oxide, for example, chromium, zinc, tin, cadmium, lead, copper, nickel or stainless steel. The lead oxide may be deposited from the vapour form while the coated sheet is maintained above 200 C. in a partial vacuum containing some oxygen. The layer is subsequently baked in air as described in the parent Specification to convert it to the yellow crystalline form. Further layers of lead oxide may be added and baked to give a layer of suitable thickness.
Patent GB-1098534-A (GB)
Title: Improvements in or relating to the manufacture of electrical components
IPC: H01L23/488
Filed: 1966-09-05
Abstract: 1,098,534. Soldering. SIEMENS A.G. Sept. 5, 1966 [Sept. 6, 1965], No. 39556/66. Heading B3R. [Also in Division H1] In a process for attaching a semiconductor device to its current supply leads, the base electrode 1 of the device is first welded to lead 11 and the remaining leads 12, 13 are then bent into contact with the emitter and collector electrodes 2, 3 and joined thereto using hydrogen flames. The electrodes 2, 3 are made of indium-gallium or indiumgallium-aluminium alloy and the leads of copper-sheathed wire which may be coated with gold. The flames employed preferably have a length of between 1 and 5 cm. and the joining is performed in the reducing zone at a temperature of about 200‹ C. when the indium alloy melts and flows over the leads 12, 13, the duration of the heating being 0À3 to 0À5 seconds. The invention may be used for attaching leads to other electrical components, e.g. the grids in electron tubes.
Patent GB-896886-A (GB)
Title: Epicyclic gearing in or for attachments to portable drilling machines
IPC: B25D16/00
Filed: 1958-12-09
Abstract: 896,886. Drilling-machines. PERKINS & SMITH Ltd., JOHN M., and GOODWIN, J. T. Dec. 1, 1959 [Dec. 9, 1958], No. 39614/58. Class 83 (3). [Also in Group XXIII] An epicyclic reduction gear in or for attachment to a portable drilling machine comprises coaxial input and output shafts 4, 5, Fig. 1, a sun gear 7 on shaft 4 and a planet carrier 8 on shaft 5, a planet gear 9 on the carrier meshing with gear 7 and also with an internally-toothed ring 10a, formed on or secured to a casing 10. Shaft 4 may be plain for engagement with the machine chuck or screwed to engage the machine spindle, and shaft 5 is screwed to carry a chuck 6. Casing 10 is held by the operator, in use, and can slip if the drill &c. in chuck 6 strikes an obstruction. The opposing faces of gear 7 and carrier 8 have cams 7a, 8a, which apply percussive blows to shaft 5 when shafts 4, 5 are relatively rotated. This percussive action may be rendered inoperative by a distance-piece in the bore of chuck 6 to displace shaft 4 to the left and separate the cams axially. In another arrangement, the end of shaft 4, Fig. 3, is arcuate and co-operates with a correspondinglyshaped plug 11 in the chuck bore, to apply the percussive blows.
Patent GB-1433238-A (GB)
Title: Heated cathode
IPC: H01J27/02
Filed: 1973-08-22
Abstract: 1433238 Thermionic cathodes KERNFORSCHUNG mbH GES FUER 22 Aug 1973 [1 Sept 1972] 39760/73 Heading H1D A directly heated cathode comprises a metal or metal carbide electron emitter 3 mounted in a graphite body 7. A plug 3 of Hf carbide or W is mounted in a U-shaped graphite body having arms 5, 6 and a connecting portion 7 of smaller cross-section with a conical aperture 8. Heating current of 100-300 amperes is supplied via Ta coated W conductors 10, 11 which also stiffen the graphite body. A hole 14 allows used plugs to be ejected. The cathode forms part of an ion source including a low pressure gas discharge space 2 across which a strong magnetic field is applied to define the discharge. Ions are extracted by a 33 MHz 40 kv. voltage.
Patent GB-1155418-A (GB)
Title: Spinel
Inventor: DEMBO VICTOR ARNOLD
IPC: C30B29/26
Filed: 1966-09-07
Abstract: 1,155,418. Spinel. MORGANITE RESEARCH & DEVELOPMENT Ltd. 6 Dec., 1967 [7 Sept., 1966], No. 40005/66. Heading C1A. A translucent spinel, obtained by sintering a shaped body of alumina and magnesia, or of compounds capable of conversion to alumina and magnesia by heating, has a density greater than 97À5% of theoretical. The reactant compounds are mixed to give proportions by weight of alumina to magnesia of from 60: 40 to 80: 20, and the shaped body is sintered at a temperature in excess of 1500‹ C. in an atmosphere of oxygen or hydrogen or a mixture thereof. In such atmospheres densities of 98-0% and even 99-5% of theoretical can be obtained. Powders of the oxides or hydroxides or carbonates e.g. magnesium carbonate and calcined alumina may he mixed with an organic binder and the bodies shaped e.g. by cold pressing or by extrusion and then prefired in air up to 1200‹ C. This is followed without cooling by sintering at a rate of 200‹ C. per hour to 1500‹ C. to 1650‹ C. in an atmosphere of oxygen or hydrogen or a mixture thereof. The temperature is then raised slowly up to e.g. at least 1800‹ or 2000‹ C. A total sintering time of 20 to 40 hours is satisfactory. The mixture of oxygen and hydrogen gases may be obtained by contacting a stream of hydrogen with water. The composition of mixed powders prior to sintering may include one or more rare earth oxides and/or alkaline earth oxides in a total amount of up to 1% by weight of the composition. Suitable oxides include those of scandium, yttrium, lanthanum, neodymium, samarium, gadolinium, calcium, strontium and barium. These are valuable in the case of sintering with oxygen.
Patent GB-950312-A (GB)
Title: Measuring and recording arrangements
Inventor: HUNTLEY KEITH GORDON
IPC: G01B7/312
Filed: 1959-11-25
Abstract: 950,312. Electric indicating systems. RANK PRECISION INDUSTRIES Ltd. Nov. 25, 1960 [Nov. 25, 1959], No. 40109/59. Heading G1N. In a system for sensing and recording the contour of an object arranged in approximately concentric rotational relationship with a sensing member, means are provided for automatically counteracting any eccentricity between the object and sensing member. Object 1 is arranged approximately concentrically with a spindle 2 which carries a sensing arm 4, transducer 5 and yoke 8. Recorder 6 has a pen 6A bearing on a disc-shaped chart on table 7 which is displaceable in the X-Y plane. An integrating wheel 10 is in frictional engagement with table 7 and is driven by a servomotor 11. Motor 11, tachometer 12 and amplifier 13 form a conventional servo-loop, at least the motor and tachometer being rotatable with spindle 2. In operation the spindle is rotated three times. During the first revolution switch 14 only is closed and the chart table is automatically shifted by wheel 10 so that the eccentricity between table 7 and recorder 6 corresponds to that between object 1 and spindle 2. During the second revolution switch 14 is open and switches 15 and 16 are closed. The contour of object 1 is then reproduced on the chart and simultaneously the signal from the transducer is integrated and stored by integrator 18. For the third revolution switches 14,15 and 16 are open and switch 19 is closed, and the table set concentrically with recorder 6 using a spring and detent arrangement. The recorder is then fed from integrator 18 and produces a trace corresponding to the mean contour of body 1. In a second embodiment (Fig. 2 not shown) the sliders of a sine-cosine potentiometer are mounted on the spindle, the two outputs being fed to separate servo-loops of which the motors shift the chart table in the X and Y directions, respectively, through screw mechanisms. If the position of the trace with respect to the centre of the chart is immaterial the contour trace may be drawn first with the chart table concentric with the spindle, and the table then automatically shifted before drawing the mean contour. Instead of shifting the chart table the workpiece 1 may be shifted to remove the eccentricity. A longitudinally extending chart or a C. R. O. may be used instead of a disc chart and in a C. R. O. separate beams may be used for each trace, control signals being provided to centre the traces on the screen. The display may then be recorded by photography or electron-photography. Specification 706,763 is referred to.
Patent GB-1466304-A (GB)
Title: Photographic film having sliding properties
IPC: G03C1/76
Filed: 1974-09-18
Abstract: 1466304 Lubricating layer for photographic materials AGFA-GEVAERT AG 18 Sept 1974 [20 Sept 1973] 40639/74 Heading G2C Photographic film has a support coated on one side with a light-sensitive silver halide emulsion layer and on the other side with one or more back-, ing layers, the uppermost backing layer containing an ester of a polyhydric alcohol with a C 10  - C 20  aliphatic carboxylic acid, and having a friction value of between 30 and 50 using polystyrene as a friction partner. Alcohols specified are ethylene glycol, diethylene glycol, triethylene glycol, glycerine, pentaerythritol, mannitol, sorbitol, glucose, fructose, sucrose, dextrin, cellulose and polyvinyl alcohol, and acids specified are stearic, palmitic, lauric, myristic and arachic. The backing layer has lubricating properties enabling film surfaces to slide over each other.
Patent GB-1153146-A (GB)
Title: Improvements in Heat Exchange Units
Inventor: MORRIS ALBERT ERNEST
IPC: F24H1/38
Filed: 1965-09-24
Abstract: 1,153,146. Air heaters; hot water boilers. ALLIED IRONFOUNDERS Ltd. 21 Sept., 1966 [24 Sept., 1965], No. 40747/65. Headings F4A and F4S. In a heat exchanger unit 2 intended for use in association with a combustion unit for heating either water or air and comprising a rectangular casing having inner and outer walls 4 and 5 respectively defining a circulation space 6, a plurality of spaced parallel ducts 7 connect opposite sections of the circulation space 6, said ducts having a substantially wedge shaped cross-section. The spaces between a duct 7 and the wall 4, and between two adjacent ducts 7 are also wedge shaped and define heating gas passages in which are disposed wedge shaped fillers 9 and 8 respectively formed from refractory or metallic material. Each filler has a series of spaced shallow grooves 10 which extend the entire height of the filler. The grooves define in conjunction with the tube walls, hot gas passages. Metal hooks 11 facilitate positioning and removal of the fillers. The circulation space 6 is provided with fluid inlet and outlet pipes (not shown).
Patent GB-903147-A (GB)
Title: Improvements in the treatment of molten pig iron
IPC: C21C5/32
Filed: 1959-12-01
Abstract: A process for the production of a highly reactive, liquid, slag rich in lime in a surface-blown converter comprises mixing a solid fuel with the lime to be added to the bath and igniting the fuel with the oxidizing gas used for blowing.  The lime may be comminuted and mixed with finely-divided coal, coke, or wood flour and a flux may be included in the mixture.
Patent GB-937455-A (GB)
Title: Improvements relating to dispensing devices for liquids
IPC: B67D3/00
Filed: 1959-12-02
Abstract: 937,455. Dispensing measured quantities of liquid. AMETEK Inc. Dec. 2, 1959 [July 20, 1959], No. 41006/59. Class 106 (5). [Also in Group XXV] Apparatus for dispensing liquid from an inverted bottle comprises a measuring chamber 19 with an inlet and an outlet alternately sealed by rings 27, 25 on a plunger 23 moved with snap action by a lever 33 and toggle means 34 and guard means are provided for both valves to prevent foreign matter from hindering their action. The ring 27 seats on a surface 28 surrounding the inlet and a flow-divider vane 29 extends upwards into the inlet tube 15; when the apparatus is disconnected from the bottle, it would be possible to drop an object, such as a washer, down the tube 15 and, to prevent this, a helical guide 30 is fitted. The lower end of the plunger 23 is recessed to slide over a perforated cylinder 21 and the ring 25 seats on the surface surrounding the cylinder; to prevent foreign matter impairing the action of the ring 25, a perforated screen 26 is provided round the plunger 23. A screw 36 adjustably threaded to a rod 38 connected to the plunger 23 engages under fingers 35 raised by the lever 33 and a longer finger 40 releases the spring- loaded lever 41 of a counter 42. A seal 44 is provided on the rod 38 so that, when the plunger 23 is raised, air can pass into the chamber 19.
Patent GB-1486203-A (GB)
Title: Fluid pressure powered actuator for hinged members
IPC: E05F15/04
Filed: 1974-09-20
Abstract: 1486203 Inflatable fluid pressure actuator for pivoted members INSTITUTE FOR INDUSTRIAL RESEARCH & STANDARDS 20 Sept 1974 [4 Oct 1973] 41010/74 Heading E2M A fluid pressure actuator for two pivoted members, e.g. a door 3 hinged at P to a frame 1, comprises an elongate inflatable flexible conduit 5 connected to the members by means 8, 9 at diametrically opposite positions such that on inflation of the conduit the effective distance between the points of connection is reduced and a pulling force is exerted on the members. As shown bars 13 are located within the conduit and are received within bent over members 11 mounted on door and frame and connection means 9 is hinged to the door to allow the pulling force to be exerted at the most suitable angle. Any suitable fluid e.g. air or water may be employed and a conventional spring or hydraulic closer is used to return the door when the conduit is deflated. In a further embodiment (Figs. 5-7 not shown) the connection means comprises slotted plates bolted to the conduit and engaged by bolts on the door and frame - one plate being loosely mounted to allow pivotal movement similar to means 9 in the illustrated embodiment.
Patent GB-978440-A (GB)
Title: Improvements in or relating to burners for gaseous fuel
IPC: F23D14/64
Filed: 1961-11-16
Abstract: 978,440. Making nozzles; jointing. STEATIT-MAGNESIA A.G. Nov. 16, 1961 [Nov. 16, 1960], No. 41065/61. Headings B3A and B3J. [Also in Division F4] An apertured air mixing chamber 2 of a gaseous fuel injection burner is sealed rigidly to a gas supply port 1 by cold deformation. A throat ring 4 on the end of the chamber 2 is pressed into a groove 3 on the end of the supply part 1 to effect the seal.
Patent GB-1417389-A (GB)
Title: Manufacture of phosphorus compounds
IPC: C07F9/50
Filed: 1974-09-20
Abstract: 1417389 Phosphine synthesis F HOFFMANN-LA ROCHE & CO AG 20 Sept 1974 [21 Sept 1973] 41070/74 Heading C2P The invention comprises the process: wherein R<SP>1</SP>-R<SP>3</SP> are each C 1-7  alkyl, C 3-7  cycloalkyl or C 6-16  aryl, and R<SP>4</SP>-R<SP>6</SP> are each C 6-16  aryl) effected at a temp. of at least 150 C. for at least ¢hr., preferably in an inert atmosphere at atmospheric or superatmospheric pressure, and optionally in the presence of an inert solvent and/or an excess of either reactant. The phosphine product may be precipitated from the reaction mixture by adding methanol and cooling.
Patent GB-875511-A (GB)
Title: Improvements relating to gear shift devices for motor vehicle change-speed gearings
IPC: F16H61/02
Filed: 1958-12-19
Abstract: 875,511. Change-speed gearing. DAIMLERBENZ A.G. Dec. 19, 1958 [Dec. 20, 1957], No. 41164/58. Class 80 (2). In a preselector gear-shift mechanism for motor vehicle change-speed gears operated by the main clutch, the free gears of gear pairs in constant mesh are selectively coupled to their shafts by axially -slidable clutch parts, the latter being connected through intermediate members, such as selector forks 27 and levers 28, to a selector plate 14 disposed in a housing 10 enclosing the gearing and provided with profiled cut-outs 32 for engaging the intermediate members, the selector plate being movable vertically by a lever 17, 18 for ratio-selection and movable horizontally by a disengagement lever 24 of the main clutch for gear-shift. Selector plate 14 is connected to lever arm 17 by a pin and slot 15, 16 and is mounted within a trough member 13 connected to lever 24 by a link 22 and lever 22<SP>1</SP> for horizontal movement on pins 12. Pins 30, 31 integral with selector forks 27 project within the cut-outs 32. In operation lever 18 is rotated to move plate 14 vertically into the position appropriate to the desired gear ratio, and disengagement of the clutch results in anticlockwise rotation of lever 24 which, near the end of its movement, strikes a resilient member 23 on rod 22 to operate the latter and lever 22<SP>1</SP> and thus move member 13 and selector plate 14 to the right, the appropriate pins 30, 31 being thereby engaged by the profiled portions of cut-outs 32 to effect gear-shift. Return movement of rod 22 upon clutch engagement restores plate 14 to its neutral position. In the arrangement shown, the two outer pairs of cut-outs are effective for forward drive, and the inner pair for reverse through a rod 33. In a second embodiment, Fig. 4 (not shown), engagement of lever 24 with rod 22 for gear-shift is effected by a cam-operated toothed member on the lever engaging serrations on the lever. In a further embodiment, Fig. 5 (not shown), lever arm 17 is formed with a series of teeth corresponding to the number of gear ratios and engageable during either change-up or changedown by one of two teeth on a pivoted fork lever and connected to the member 13 by springs, by which on de-clutching the lever 17 is rotated one step in the change-up or changedown direction.
Patent GB-1419155-A (GB)
Title: Electrolytic hydrodimerization process
IPC: C25B3/29
Filed: 1973-09-03
Abstract: 1419155 Electrohydrodimerization process MONSANTO CO 3 Sept 1973 [5 Sept 1972 4 April 1973 6 Aug 1973] 41390/73 Heading C2C [Also in Division C7] A process for hydrodimerizing an olefinic compound (such as acrylonitrile) having the formula R 2 C = CRX wherein -X is -CN, -CONR 2  or -COOR<SP>1</SP>, R is H or R<SP>1</SP>, and R<SP>1</SP> is C 1 -C 4  alkyl, comprises electrolysing an aqueous solution having dissolved therein (a) at least 0À1% by weight of the olefinic compound, (b) at least 10<SP>-5</SP> g. mol./l. of quaternary ammonium cations and (c) at least 0À1% by weight of conductive salt in contact with a cathodic surface, there being included in the solution in a concentration sufficient to inhibit (i.e. lower) formation of hydrogen at the cathodic surface, (d) at least one nitrilocarboxylic acid compound having the formula Y 2 N(ZÀYNÀ) n (CH 2 ) m COOM wherein Y is hydrogen, -(CH 2 ) m COOM, -(CH 2 ) m+1 OH or C 1 -C 20  alkyl, Z is a divalent C 2 -C 6  hydrocarbon radical, M is hydrogen, alkali metal or ammonium, m is 1 or 2, n is 0, 1, 2, 3 or 4 and at least one Y is -(CH 2 ) m COOM or -(CH 2 ) m+1 OH, "Quaternary ammonium" includes piperidiniums, pyrrolidiniums and morpholiniums. The conductive salt may itself be a quarternary ammonium salt or may be an alkali metal salt. Specified salts are phosphates, borates, perchlorates, carbonates and sulphates; particularly incompletely substituted salts such as Na 2 HPO 4  and K 2 HBO 3 , and alkali metal and ammonium salts of condensed acids of P and B. Electrolysis may be in a single compartment or diaphragm cell. Specified conditions are: a pH of 2-12; a temperature from the freezing point to 75 C. and above; pressures at or above atmospheric; solution flow adjacent the cathode of at least 1 ft./sec.; an anode cathode gap of 40 mils or less to ¢ inch or more; a cathode comprising Cd, Hg, Tl, Pb, Zn, Mn, Sn or graphite; an anode comprising Pt, Ru, Ni, Pb, PbO 2 , C steel, alloy steel Fe or magnetite; and the aqueous solution of the electrolysis medium may also contain a dispersed but undissolved organic phase. In all the examples, acrylonitrile is electrolytically hydrodimerized in undivided cells to form adiponitrile. The aqueous solution contains ethyl tributyl ammonium cations, incompletely substituted sodium orthophosphates, (borates in Examples IV, VII and VIII), and tetrasodium ethylenediamine tetracetate. The anodes are of carbon steel and the cathodes are of Cd except for Example VI where the cathode is Pb.
Patent GB-961211-A (GB)
Title: Leather marking machine
Inventor: HURWITZ MAX
IPC: C14B1/56
Filed: 1960-12-02
Abstract: 961,211. Perforating machines. MAXAM Inc. Dec. 2, 1960, No. 41581/60. Heading B4B. [Also in Division B6] In a machine for marking, e.g. perforating, leather, plastics or fabric during the manufacture of shoes, a marking die is caused to swing forwardly and downwardly towards a stock supporting surface and then back again, the last part of the downward movement and the first part of the upward movement being in a direction perpendicular to the stock supporting surface. Perforating machines.-A piece of leather 14 to be perforated is placed on a work-table 10, Fig. 2. The machine frame has side plates 16 to the inner face of each of which are secured platelike members 44, 45, 46, a cam track 44a being formed between the members 44, 45 and a cam track 46a being formed as a groove in the member 46. The perforating die 27 is mounted on a platen 26 carried by a carriage 29. The carriage 29 comprises side plates 28 connected by the platen 26 and a cross-member 30. Cam followers 38, 40, 42 are mounted on the outer face of each side plate 28, the followers 38, 40 being rollers which respectively engage one side of the member 44 at its upper end and the cam track 46a. The cam follower 42 comprises a toothed pinion 68 and, mounted coaxially therewith, a roller 70 having a tapered periphery. The pinions 68 are keyed to and the rollers 70 are rotatable on a shaft 60 which traverses the carriage 29 and upon which the carriage is pivotally mounted. The pinion 68 engages a rack 44c formed on one edge of the member 44 and the roller 70 engages a V-shaped groove 45a formed in the member 45. A pneumatic cylinder 36 is pivotally mounted between the side plates 16 and a piston rod 34 is connected at one end to a piston therein and at the other to the cross-member 30 of the carriage 29. After the die 27 has made perforations on the leather 14 in the full-line position of Fig. 2, compressed air is introduced into the cylinder 36 so as to move the piston to the top end thereof whereby the carriage 29 at first is moved vertically away from the table 10 as the cam followers are guided vertically by the members 44, 45, 46 and then is tilted about the shaft 60 to the position shown in chain dotted lines as the cam 38 passes beyond the range of the member 44 and the cam 40 enters an inclined upper portion of the cam track 46a. This movement of the carriage is reversed when an impression is to be made. The roller and pinion arrangement 68, 70 prevents side movement of the carriage and ensures that the shaft 60 remains horizontal during operation of the machine. Work supports.-The work-table 10 may be replaced by a perforated table 110, Fig. 7, in some or all of the holes 112 of which spring biased pins 114 are mounted. The pins serve to locate the workpiece on the table and during an impression are pressed down into the table against their spring bias by the perforating die. The pins may be replaced by a continuous, spring-biased member which corresponds in shape to at least part of the contour of the workpiece.