baber/WOPTO huggingface dataset:
Patent GB-947442-A (GB)
Title: Improvements in and relating to manganese bacitracin feed supplement
Filed: 1962-02-15
Abstract: Manganese bacitracin stabilized against loss of potency during storage is produced by acidifying the product of the fermentation of a bacitracin - producing strain of Bacillus subtilis in a liquid nutrient medium therefor, adding a water-soluble manganese salt to the acidified fermentation product, precipitating manganese bacitracin by adjusting the pH of the mixture to 6.2-7.8, separating the entire suspended solids from the resulting slurry and drying the separated solids.  Alternatively, when the suspended solids have been separated from the slurry, the resulting solid-free liquid may be concentrated, the concentrated liquid added to the separated solids, and the resulting mixture dried.ALSO:A feed supplement contains as the essential active ingredient, the water-insoluble fractions of the fermentation product resulting from the production of bacitracin when a bacitracin-producing strain of the organism Bacillus subtilis is cultivated in a liquid nutrient medium to which is added a water-soluble manganese salt in sufficient quantity to form manganese bacitracin after completion of the fermentation reaction.  Other nutrient materials such as Vitamin B12 may be added.
Patent GB-594980-A (GB)
Title: Venetian blind structure
IPC: E06B9/304
Filed: 1945-03-09
Abstract: 594,980. Venetian Minds. KAHN, L. I. March 9, 1945, No. 5951. Convention date; May 11, 1944. [Class 20(iii)] In a venetian blind, the positioning and supporting means for the slats comprise members each adapted to be fastened to engaging means on the tapes and having a stud which releasably engages an opening in the slat. The engaging means may take the form shown in Fig. 5 in which a ladder member 50 is woven into the tapes 35-36. A slat supporting member 56 is fastened to the ladder member by means of its lugs 57 and 58, and the stud 59 engages an aperture in a slat 55. The engaging means may alternatively comprise loops formed on the tapes, the supporting member being formed with hooks to engage these loops. The supporting member may comprise a wire bent upon itself to form a stud at its centre and bent at its ends to form hooks. Specification 594,995 is referred to.
Patent GB-917739-A (GB)
Title: Gold coating of molybdenum by electroplating
Inventor: WEAVER GORDON VICTOR
IPC: C25D5/38
Filed: 1961-02-17
Abstract: 917,739. Semi-conductor devices; electroplating gold onto molybdenum. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Jan. 3, 1962 [Feb. 17, 1961], No. 5959/61. Classes 37 and 41. In making a transistor, gold is electroplated on a molybdenum base support to provide a bond for mounting a germanium wafer. The method comprises electroplating a preliminary layer of Au on to a Mo surface, heating the Au plated Mo in a reducing atmosphere, e.g. hydrogen, to cause the Mo to diffuse into the Au and then electroplating a second layer of Au on to the preliminary layer. An example includes the following steps: degreasing Mo strip in trichlorethylene vapour; stoving the Mo for 30 minutes in dry H 2  at 800-850‹ C.; " stopping off " by a conventional medium areas that do not require Au plating; anodic etching in 70% H 2 SO 4  at 6-9 volts for 5-10 minutes; electroplating in a gold cyanide bath at 70‹ C. for 2 minutes at 4.1 amps/sq. ft.; removing the " stopping off " medium by a solvent; stoving the Mo for 1 hour at 850-900‹ C. in dry H 2  ; recoating the Au free areas with "stopping off" medium; further electroplating in the cyanide at 70‹ C. for 10 minutes at 4.1 amps/sq. ft.; and cold rolling to finish.
Patent GB-875651-A (GB)
Title: Improvements in or relating to breathing apparatus
Inventor: FITT PETER WILLIAM
IPC: A62B7/06
Filed: 1959-02-21
Abstract: 875,651. Respiratory appliances. NORMALAIR Ltd. Jan. 18, 1960 [Feb. 21, 1959], No. 6045/59. Class 81 (2). A breathing-apparatus using a liquid oxygen converter has means for returning excess oxygen from the breathing system to the converter. The converter 1 is filled through connection 3 and pipes 9, 17, while the enclosed air is allowed to escape through outlet 27, pipe 14 and connection 3. Removal of the filling union closes pipe 9 and connects pipes 13, 14 whereupon oxygen through pipes 17, 10 becomes evaporated in heating coil 12 and builds up the pressure in the converter, through pipes 13, 14 and connection 27 until a pressure-actuated valve 4 closes. When the system is in use liquid oxygen from pipe 17 passes through a non-return valve 18 and a liquid oxygen trap 19 to a further non- return valve 7, after which it passes to a heating coil 16, demand regulator 22 and face mask 28. During each exhalation any liquid oxygen which has collected in the trap 19 is evaporated in the coil 24 and is returned as gaseous oxygen through a differential valve 26 to the converter 1. During the initial stages of use, when gaseous oxygen will have accumulated in the converter, this gas escapes through outlet 27, pipes 14, 13, through a connection between valves 4, 5 and pipe 15 to the user. The valve 5 is opened only by high pressures and when the initial pressure has been reduced sufficiently, this valve closes and operation of the system continues as described above.
Patent GB-112085-A (GB)
Title: Improvements in or relating to Devices for the Pulverisation of Molten or Liquid Metals.
Inventor: CUSQUEL AUGUSTE
IPC: B22F9/08
Filed: 1917-04-30
Abstract: 112,085. Cusquel, A., and Goupil, H. April 30, 1917. Addition to 106,095. Air and gas pressure sprayers.-In the pulverizer for molten metals described in the parent Specification, an additional pressure-regulating chamber s is supplied with compressed gas by the conduit g and communicates with the chamber s' between the two nozzles by means of a series of passages t, the total sectional area of which is less than that of the conduit g.
Patent GB-594394-A (GB)
Title: Improvements in crystal contacts of which one element is silicon
IPC: H01L21/306
Filed: 1942-05-06
Abstract: In the manufacture of silicon crystal contacts as claimed in the parent Specification the purified silicon powder is melted in a container made of or lined with alumina or a mixture of alumina and beryllium oxide.  Pieces of the melt may be treated with hydrofluoric acid, heated in an oxidizing atmosphere, and again treated with hydrofluoric acid.  The Provisional Specification describes also chromium oxide as a material for making the container.  Specification 577,181 is referred to.
Patent GB-678135-A (GB)
Title: Improved rotary water meter
IPC: G01F1/115
Filed: 1951-03-14
Abstract: 678,135. Rotary meters. ELECTRICITY METER MANUFACTURING CO., PTY., Ltd. March 14, 1951 [March 20, 1950], No. 6137/51. Class 110(ii) A water meter comprises a vane wheel 4, carried by a spider 6, in the throat 7 of a venturi tube 8. The shaft 5 has an armature magnet 9 which acts upon field coils 10 in a sealed waterproof housing 11. Current generated by the rotor actuates a recording mechanism of known construction. In a modification, the armature flux acts upon a radial magnetic coupling in a sealed housing. The coupling actuates a recording mechanism through gearing.
Patent GB-889445-A (GB)
Title: Improvements in or relating to speed varying arrangements, more particularly in thoseused in the control of machines
IPC: F16H61/662
Filed: 1958-02-26
Abstract: 889,445. Expanding wheel gears. ETABLISSEMENTS A. CAZENEUVE, and BR UET, H. R. Feb. 26, 1958 [March 6, 1957], No. 6207/58. Class 80 (2). [Also in Group XXIX] In an expanding V or flat belt pulley variablespeed gear driving a machine-tool spindle, the driving pulley 1, 7 is controlled by a manual lever 33, through a follow-up fluid-pressure servomotor, comprising a cylinder 3 secured to an axially fixed pulley-flange 1, a piston 10 pinned at 8 to a slidable pulley-flange 7, and a control valve 22 actuated by the manual lever 33 to connect the cylinder 3 to partly flexible pressure or exhaust lines 60, 31 in accordance with the direction of movement, such connection persisting until cut off by the follow-up movement of the connected pulley flange 7 and piston 10. The driven pulley 39, 40 drives the machine spindle through gears 48, 49, its flanges 39, 40 being both axially movable and pressed together, with or without spring assistance, by constant fluid pressure 42 acting on a piston 51 which is smaller than that, 10, of the driving pulley 1, 7. Fluid pressure is supplied by the machine lubrication system through a reducing valve. The manual control lever moves over a quadrant graduated in speed ratios or in output speeds for a given input speed.
Patent GB-535529-A (GB)
Title: Improvements in or relating to electric wave filters
IPC: H03H7/01
Filed: 1940-04-06
Abstract: 535,529. Impedance networks. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd., and GRABAU, J. April 6, 1940, No. 6237. Drawings to Specification. [Class 40 (iii)] A multi-section ladder filter having given cut-off frequency or frequencies and given characteristic impedance can be designed so that, for a specified number of sections, the minimum attenuation in the stop range is the highest possible or, if the minimum attenuation in the stop range is specified, it can be designed to have the least possible number of sections. These problems are capable of rigid solution by means of known formulae which are given in the Specification (see, for example, H. Piloty in Elektrische Nachrichten-Technik, March, 1937). Such filters however comprise only m-type sections, and the invention consists in making one of the sections of constant-k configuration, thus saving one element at the expense of a trifling reduction of the minimum attenuation value referred to above. The Specification indicates the modifications of the formulae necessitated by the additional condition as applied to the design of low-pass, high-pass, band-pass and band-elimination filters. Simple examples are shown in which the m-sections are shunt-derived.
Patent GB-1040982-A (GB)
Title: Improvements in manual and power-driven apparatus for controlling a fluid-operated motor
IPC: F16K31/14
Filed: 1964-02-14
Abstract: 1,040,982. Hydraulic apparatus. SHAFER VALVE CO. Feb. 14, 1964 [March 18, 1963], No. 6241/64. Heading F1P. An apparatus, Fig. 1 (not shown), for controlling the operation of a hydraulic motor comprises a power-driven reversible pump 20 and a manually operable pump 66, 67 each mounted on a reservoir casing 11 and each being selectively operable to supply hydraulic fluid from the reservoir 11 through a rotary valve 27 to one of two outlets provided in a manifold block 43 and connected to opposite sides of the motor. The rotary valve 27 has a shaft 44 rotatable in the manifold block 43 and provided with a crank arm 45 capable of being retained in one of three predetermined positions by the engagement of a spring-loaded pin, carried thereby, with slots 50 in the manifold block 43. The three positions of the rotary valve 27 correspond to operation of the motor in either direction by the reversible pump 20, forward operation by the pump 66, 67 and reverse operation by the pump 66, 67. Each outlet to the motor is in communication with an adjustable relief valve and a pressure operated variable throttle disposed in the manifold block 43. In the embodiment described the motor is a semi-rotary type and controls the opening and closing of a rotary valve.
Patent GB-661870-A (GB)
Title: Improvements in and relating to electrical conductors
IPC: H01B3/10
Filed: 1948-02-28
Abstract: 661,870. Cables; electrophoretic and electrolytic deposition. SPRAGUE ELECTRIC CO. Feb. 28, 1948 [May 20, 1944; May 18, 1945], Nos. 6287/48 and 6288/48. [Classes 36 and 41] [Also in Group V] An electric conductor is insulated with a porous refractory material which is subsequently impregnated with one or more metal oxides or hydroxides. The impregnant may be a decomposable metal salt, which is then heattreated to convert it to the oxide or hydroxide. The surface of the refractory material may then be treated with a surface-active agent such as stearic acid, and with a resinous material such as a silicone resin. A wire 15 is coated in this manner by passing it into a cell 10 where it receives its initial porous coating by electrophoretic deposition from a suspension 20 of refractory material, the wire and the cell forming the electrodes of the coating cell. The coated wire is then heated in oven 11 to dry the coating and bond it to the wire, after which it is cooled and passed through cell 50 containing an aqueous solution 52 of aluminium nitrate, which impregnates the porous refractory coating. The wire then passes through an oven 56 in which the aluminium nitrate is decomposed, forming a cushioning gel of hydrated aluminium oxide within the pores of the insulation. A surface-active agent and resinous coating may be applied in cell 30 which contains a solution 31 of stearic acid and a silicone resin in xylene. This solution may be applied to the wire by a simple dipping process or by electrophoretic deposition. The treated wire then passes into an oven 13 where the solvent is removed and the resin polymerized. The wire then passes into cell 60 containing a solution 55 of stearic acid, the solvent being removed in oven 57. The resin may be omitted from the solution in cell 30, in which case the cell 60 and oven 57 are also omitted. Many surface-active agents and metal salts are mentioned as being suitable and may be used in place of stearic acid and aluminium nitrate. Specification 655,763 is referred to. The Specification as open to inspection under Sect. 91 also describes a method of simultaneously depositing refractory material and a colloidal hydrated gel on a conductor. This subject-matter does not appear in the Specification as accepted.
Patent GB-1487282-A (GB)
Title: Cathode ray tube
IPC: H01J29/86
Filed: 1975-02-14
Abstract: 1487282 Cathode-ray tubes CARL-ZEISSSTIFTUNG [trading as JENAER GLASWERK SCHOTT & GEN] 14 Feb 1975 [16 Feb 1974] 6336/75 Heading H1D Implasion resistance in a cathode-ray tubeparticularly in a wide-angle television tube-- having a rectangular screen joined to a cylindrical neck by a rounded, truncated, pipramidal, cone, is increased by shaping the wall joining the shorter screen sides to the neck with an outward bulge as shown at 11. Preferably, the wall joining the longer screen sides to the neck are substantially planar. Numerical data are given.
Patent GB-491515-A (GB)
Title: Improvements in or relating to enzymatic preparations
IPC: C12N9/96
Filed: 1937-03-03
Abstract: Starch-degrading enzyme preparations suitable for desizing fabrics are stabilized against the decomposing action of copper salts by adding blood, defibrinated blood, blood powder, a coagulum obtained by boiling blood or salting out blood for instance by ammonium sulphate or by mixing blood with anhydrous sodium sulphate and drying the mixture.  Details are given of the loss of activity in presence of copper sulphate of pancreas amylase and malt extract without and with the blood addition, and also with other known additions.  The Specification as open to inspection under Sect. 91 includes the use of hydrolysed blood.  The hydrolysis may be effected by boiling with hydrochloric acid, the product being neutralized and concentrated or dried or it may be treated with suitable enzymes such as pepsin and/or trypsin.  This subject-matter does not appear in the Specification as accepted.
Patent GB-645833-A (GB)
Title: Improvements relating to measuring apparatus for measuring small movements
IPC: G01B3/22
Filed: 1947-03-06
Abstract: 645,833. Electric indicating systems for small movements. COYLE, M. B., HAYNES, F. G., and METROPOLITAN - VICKERS ELECTRICAL CO., Ltd. March 6, 1947, No. 6360. [Class 40 (i)] In an apparatus for measuring small movements such as the expansion of a metal rod with rise of temperature (Figs. 1, 2, 3), the test-piece movement is transmitted through a quartz push rod 5 and a pressure limiting spring safety device 6 (Fig. 4, not shown), to a slidable plunger 3 coupled through a mechanical amplifying device to rotate over a dial a spindle 4 carrying a bracket 7 on which is pivoted a.pointer 8 carrying an armature 9. The pointer is biassed by spring 10 to normally lie in its plane of rotation, but on periodical energization of electromagnet 11 the armature is attracted towards the dial so that the pointer contact 12 engages a circumferential resistance wire 13, at a position depending on the spindle rotation. The tapped wire is connected as resistance R4 of a Wheatstone bridge (Fig. 5), together with fixed resistances R2, R3, a tapped resistance R1 and a galvanometer 15. R1 is adjusted to balance the bridge for zero movement of the test-piece, and on expansion the bridge balance is re-adjusted automatically by the tapping of R1, which indicates the expansion and may operate a recording device. The tapped resistance wire may take other forms (Figs. 6, 7, not shown), and its variations may operate remote control devices. The apparatus may be actuated by pressure diaphragms or meter pointers. The Provisional Specification refers to the indication of testpiece movements by the unbalance readings of galvanometer 15.
Patent GB-777562-A (GB)
Title: Improvements in or relating to electric discharge tubes
IPC: H01J17/48
Filed: 1953-03-09
Abstract: 777,562. Glow discharge lamps. ERICSSON TELEPHONES, Ltd. and ACTON, J. R. Feb. 26, 1954 [March 9, 1953], No. 6403/53. Class 39(1). The composition and disposition of the electrodes and the nature and pressure of the gas filling in a glow discharge tube for use as a luminous signalling or indicating device in electronic counter or computer arrangements are such that a separate discharge glow may be maintained between a common anode and one or more of a plurality of cathodes, and each such discharge glow may be produced or extinguished independently of any other discharge glow within the tube. The tube shown comprises ten nickel rod cathodes 1 arranged a uniform distance apart in a circle with their discharge surfaces 1a spaced equidistantly from the discharge surface 2a of a dished circular nickel cathode 2. The cathodes pass through holes in a ceramic insulator 5 and a mica disc 9 which is sandwiched between an upper ceramic insulator 6 and a lower ceramic insulator (not shown) and has projecting teeth which engage the inner wall of the tube envelope 3 to locate the electrode assembly with respect to the envelope. The anode 2 is secured to a rod 4 which passes through the ceramic insulators into a ceramic sleeve 8 where it is attached to a wire 14 passing through the pinch 10. Each cathode 1 is fastened at its lower end to a wire 11 projecting from the pinch 10, each wire 11 and the wire 14 being attached to a base pin 12. The tube is filled with 99À5 per cent neon and 0À5 per cent argon at a pressure of 40 mm. of mercury, which together with the nature and disposition of the electrodes ensures that the difference between the striking and extinguishing potentials is less than forty volts. A number of discharges may be maintained simultaneously in the tube and may be viewed through an apertured plate covering the end of the tube envelope. The number of cathodes is not limited to ten, and the individual cathodes may be of rectangular or channel section and may be arranged in an arcuate row. The anode may be a disc or cylinder which in the latter case may surround the cathodes. Specification 712,171 is referred to.
Patent GB-547371-A (GB)
Title: Improvements in and relating to apparatus for the prevention of ice formation on aeroplane propellers
IPC: B64D15/12
Filed: 1941-05-20
Abstract: 547,371. De-icing aircraft propellers. BRITISH THOMSON-HOUSTON CO., Ltd., and CLARK, L. T. May 20, 1941, No. 6475. [Class 114] In apparatus fo de-icing the blade of variable-pitch aircraft propellers a rigid ring 6 i supported from the root of each blade 2 by means of ; strap 11 and a swivel joint 8 having two degrees of freedom The ring 6 carrie one or more bracket 12 with a swive joint 13, having two degrees of freedom for one end of a radius arm or tube 7, the other end o which is carried by a swivel joint 14 having a single degree of freedom, carried by the propeller hub. The conductors 4 from the terminal block of a hubmounted generator 5 run along or through the arm or tube 7 and across the swivel joints 14, 8 with sufficient free length to permit flexure about the joints, to supply current to heaters 3 mounted on the blades 2. The brackets 12 may be eliminated by mounting the swivel joints 13 directly on the ring 6. Specifications 525,452 and 545,298 are referred to.
Patent GB-450659-A (GB)
Title: An improved method of the means for glazing, slating and tiling
IPC: E04D3/08
Filed: 1936-03-04
Abstract: 450,659. Glazing; roofing. CRAWLEY, J. K., Quarry Hill, Brancepeth, Co. Durham, and FOSTER, A., Clerk of Works House, Denton Manor, Grantham. March 4, 1936, No. 6561. [Classes 20 (iii) and 20 (iv)] Panes of glass, slates, or tiles C are fitted in continuous, undercut grooves B, formed in the members A of a supporting frame, the space D in the grooves above the panes or the like being caulked with a resilient packing material, such as asbestos string, which has preferably been rendered waterproof by treatment with, for instance, graphite and grease. The lower undercut portions of the grooves serve to drain away any accumulation of moisture. Various forms of grooves are described, and in addition, forms of construction in which the member A is formed from metal sections F, G, such as are shown in Fig. 6, secured together, or of single bent-metal elements.
Patent GB-679579-A (GB)
Title: Improvements in or relating to indexing mechanism for a rotating dressing tool for grinding wheels
IPC: B24B53/12
Filed: 1950-03-16
Abstract: 679,579. Trueing grinding wheels. WHEEL TRUEING TOOL CO. March 16, 1950 [April 23, 1949], No. 6589/50. Class 60. A mechanism for indexing a tool 13 for truei ing a grinding wheel 10 comprises a shank 15, a bifurcated pawl 22 pivotally mounted on the shank which is secured to a housing 11 for vertical adjustment, and a stop 29 carried by the shank for limiting the movement of the pawl. The tool 13 may be a diamond and is mounted in a rotatable. holder 12 provided with a sprocket wheel 14 which strikes the pawl 22 at the end of each traverse of the tool across the peripheral face of the grinding wheel 10 to index the diamond. The pawl has a bevelled edge to facilitate engagement with the teeth of the sprocket wheel and is mounted by means of two locked screws on the end of the shank 15. The stop 29 overlaps one side of the pawl so that the latter may swing in one direction only. In a second embodiment the dressing assembly is supported by a cylindrical shank 38, Fig. 6, from the top portion of the guard. The lower end of this shank has a flat portion 43 provided with three threaded holes to one of which a plate 47 for pivotally supporting the pawl 50 is secured, the plate having a slot to accommodate the securing bolt so that the inclination and position of the plate with respect to the shank may be adjusted. Two springs 60, 62 secured by a single bolt 64 to the plate 47 resist the movement of the pawl 50 when it is swung about its pivot at the start of the return movement of the tool after indexing.