baber/WOPTO huggingface dataset:
Patent GB-704435-A (GB)
Title: A process for preventing the oxidation of the amalgams of the base metals
IPC: C22B3/44
Filed: 1952-02-28
Abstract: In a process for the preparation of base metals which comprises the preparation of an alkali amalgam by electrolysis of a solution of alkali salts in the presence of a mercury cathode, reaction of this amalgam with a solution of metallic salts containing the required metal, separation of the resulting amalgam from excess mercury and decomposition of the separated amalgam by heating, a reducing agent is added to the said solution of metallic salts to prevent the formation of oxides on the metallic amalgam. Alternatively the amalgam of the required metal is formed by direct electrolysis of a solution of metallic salts containing the metal, the reducing agent being added to the solution in the electrolytic cell.  This reducing agent should be such that neither it nor its oxidation product enters into disturbing side reactions with the amalgam, e.g. hydrazine or sodium bisulphite. The amount of reducing agent added should be in equivalent proportion to the amount of atmospheric oxygen in the salt solution.
Patent GB-1141922-A (GB)
Title: Alternating-current machine rotor
IPC: H02K17/16
Filed: 1966-02-07
Abstract: 1,141,922. A.C. machine rotors. T. SABEV. 7 Feb., 1966 [6 Feb., 1965; 25 June, 1965], No. 5364/66. Heading H2A. An A.C. machine rotor comprises a ferromagnetic yoke 1 mounting and surrounded by an assembly of separately made rotor bars which form at the rotor periphery an annulus consisting only of juxtaposed ferromagnetic electrically conducting bars 4 which are electrically insulated at least at the outer regions of their mutually opposing adjacent surfaces, electrically interconnected at their ends at least above a particular operational speed, and have a smaller dimension circumferentially than radially of the rotor. The yoke 1 may be the hollow cylinder shown fixed to the rotor shaft 3 by ferromagnetic radial fillets 2, or a solid drum, and be either a single piece or sub-divided either axially, Figs. 8-10, not shown, or into segments; or it may be a hollow cylinder filled with loose or bound iron powder. The electrical interconnections are by welding or rings 5 which may be separate or radially laminated or integral with divided yoke parts, Fig. 9. The insulation is either a thin oxide layer or an air gap but the inner parts of the bars may be in contact. The bars may have radial preferred magnetic directions, be in two parts inclined to the rotor axis, and are formed into the assembly by welding in identations 6 or in a ring 7, or are retained by having bevelled ends engaged by the rings or yoke parts, Figs. 7 and 9, or by integral projections or separate rings, Figs. 8-10, disposed between the yoke parts. Cooling air passages (12) may be between the inner parts of the bars or in the outer part of the yoke, Figs. 4-6, not shown, and such passages may contain an exciter winding and the bars form a damper winding in the case of synchronous machines. Alternatively, cooling spaces may be formed in the sides of adjacent bars. To provide high starting torques, the end rings are movable by e.g. a centrifugal switch to make the bar interconnection only when the particular speed is reached. In the bar part of the rotor there may be at least one A.C. winding arranged in a closed circuit or connected to slip rings the latter permitting a cascade arrangement with further A.C. machines.
Patent GB-564709-A (GB)
Title: Improvements in or relating to dynamo electric machines
IPC: H02K47/16
Filed: 1943-04-05
Abstract: 564,709. Dynamo-electric machines. HOOVER, Ltd., COLSTON, C. B., and DUNN, H. G. April 5, 1943, No. 5398. [Class 35] In a dynamo-electric machine of the kind used as a booster or voltage stabiliser comprising an input winding for connection across a variable voltage supply and an output winding for connection in series between the supply and a load requiring a constant voltage, one of the windings is wound for three times as many poles as the other and the field system comprises groups of three poles, whilst means is provided .for exciting the field system in such a manner that the difference between the flux of the middle (or booster) pole of a group and the sum of the fluxes of the other two (or main) poles varies with the input voltage in such direction as to tend to maintain the load terminal voltage constant. The machine functions as a reversible booster when the desired load voltage has a value intermediate the extreme variations of input voltage. In the form shown, the machine has a two pole lap wound input winding G and a six pole wave wound output winding H, the field system comprising six poles arranged in two groups A, B, C and D, E, F. The main poles A, C and D, F have windings A<SP>1</SP>, C<SP>1</SP>, D<SP>1</SP>, F<SP>1</SP> in series with the input winding G, which is shunted by windings B<SP>1</SP>, E on the booster poles B; E, the main poles also carrying shunt windings A<SP>2</SP>, C<SP>2</SP>, D<SP>2</SP>, F<SP>2</SP> connected in series with a carbon pile resistance L across the input terminals J. All these windings tend to produce the same polarity throughout each group of poles, but an opposing winding B<SP>2</SP> is arranged on one booster pole and connected in parallel with the main pole shunt windings. The pole strength of the booster pole is approximately double that of each main pole when the input voltage is equal to the desired load voltage, so that the E.M.F. generated in the six pole winding is then zero, the E.M.F. changing direction according to whether the flux in the booster pole is greater or less than twice that in each of the other two poles. The resistance L may be of the kind described in Specifications 514,482 and 532,741. comprising a carbon pile compressed by a spring against the action of a solenoid. M energized in accordance with either the load or input voltage.
Patent GB-521580-A (GB)
Title: Improvements in and relating to safety razors
IPC: B26B21/18
Filed: 1939-02-17
Abstract: 521,580. Safety razors. CALDERON, C. A., and AMERISO, A. M. Feb. 17, 1939, No. 5401. [Class 30] A safety razor has a blade 10 which is held in position between clamping plates 1 and 2 whose surfaces are curved longitudinally and transversly. The corners 3 and 4 of the clamping plates are rounded in conformity with the rounded corners of blade 10.
Patent GB-869572-A (GB)
Title: Improvements in thermostatic valves
IPC: G05D23/02
Filed: 1958-02-20
Abstract: 869,572. Valves. STANDARD-THOMSON CORPORATION. Feb. 20, 1958 [Nov. 6, 1957], No. 5491/58. Class 135. A thermostatic valve comprises a flange 12 having a valve seat for a closure member 18, a valve closing tension-spring 20 secured at 22 and 24 to the valve and flange, and a thermal actuator including a body 14 and an element 16 extending from the body, the body and element respectively being supported on either of the flange and valve member to open the valve when the element moves out of the body. As shown, the actuator containing wax is supported on webs on the flange but in an alternative embodiment is attached to the valve which opens downwards against the flow F. The valve may be made of plastic material in which case the spring is attached to it by studs passing through the material. Specifications 757,429, 792,797, 801,881 and 801,882 are referred to.
Patent GB-575561-A (GB)
Title: Improvements in and relating to electric fans
IPC: F04D29/70
Filed: 1944-03-24
Abstract: 575,561. Machinery guards. WOODS. M. G. March 24, 1944, No. 5502. [Class 80 (iv)] . [Also in Group XXVI] An electrically-driven fan is mounted on a wall by means of a guard comprising a skeleton dome formed of bent wires such as 6 connected by wire circles 4 or a wire helix, at least, some of the bent wires, shown at 1, being together strong enough to carry the motor and fan and having extended ends 7, 8 for attachment to the wall or wall-plate and the motor casing respectively. Specification 494,973. [Group XXVI], is referred to.
Patent GB-780938-A (GB)
Title: Improved method for the manufacture of heat exchanging elements and elements so produced
IPC: B21C37/26
Filed: 1956-02-22
Abstract: 780,938. Making heat exchanger tubes. SODERSTROM, S. H. Feb. 22, 1956 [Feb. 24, 1955], No. 5553/56. Class 83 (2). [Also in Group XIII] A tubular heat exchange element with external fins is formed by winding a band 2 around a tube 1, edge slits 3 being provided in the band before or during the winding operation which slits are caused to open at 5 as the band is wound about the tube, and welding the band to the tube as the winding proceeds to form a continuous weld joint. The tube, band and the weld metal are preferably of the same material. The band is wound about the tube as a helix with the distance between adjacent convolutions being between one and five times the thickness of the band. The tube 1 may alternatively be of square, Fig. 2 (not shown), or pear-shaped cross section, Fig. 3 (not shown). The slits 3 are so arranged that the fins 6 of one convolution lie opposite the spaces 5 of the adjacent convolution. A plurality of bands may be wound simultaneously to provide a plurality of helices. In a heat exchanger unit, Figs. 4, 5, the band is wound around a circular tube 1 and is inserted in an outer tube 7. The spaces in adjacent convolutions are staggered to provide a tortuous path 8 for the medium in the outer tube 7.
Patent GB-349126-A (GB)
Title: The manufacture of new wool dyestuffs
IPC: C09B1/34
Filed: 1930-02-19
Abstract: Anthraquinone dyes for wool are obtained by condensing 1-amino-4-halogenanthraquinone-2-sulphonic acid with an aromatic diamino-mono-sulphonic acid containing at least one primary amino group in aqueous solution with an acid-binding agent and copper catalyst.  The products may be treated with feebly-acting alkaline reducing agents to remove the sulphonic group from the anthraquinone nucleus.  According to examples diamino-monosulphonic acids specified are 4 : 41-diaminodiphenyl-3-sulphonic acid, 4 : 41-diaminodiphenylamine-2-sulphonic acid, 1-cyclohexylamino-4-aminobenzene-2-sulphonic acid.  Sulphonic acids of phenylene diamines are also referred to.  As a feeble alkaline reducing agent, sodium sulphide is mentioned.  Alkyl-, aralkyl-, or cycloalkyl-phenylene diamine sulphonic acids are obtained by condensing a chloronitrobenzene sulphonic acid with an alkyl-, aralkyl-, or cyclo-alkylamine and reducing the nitro-group.
Patent GB-1249734-A (GB)
Title: Electrophotographic copying apparatus
IPC: G03G15/00
Filed: 1969-02-03
Abstract: 1,249,734. Electro-photographic apparatus. ADDRESSOGRAPH-MULTIGRAPH CORP. Feb. 3, 1969 [Feb. 5, 1968], No.5716/69. Heading G2H. An electro-photographic apparatus has an endless belt 20 movable past a charging station, an exposure station 28, developing station 30 and a transfer station 32. The belt comprises a photoconductive layer 44, Fig. 3a, on a conductive layer 92 carried on an insulating layer 90. A conductive strap 98 connects conductive layer 92 to a conductive strip 96 which engages a roller 22 connected selectively to earth or to a D.C. source 84 for applying reference potential between the conductive layer and developing means and between the conductive layer and a charging electrode. The belt 20 may have a base of transparent plastics material, e.g. cellulose acetate or polyester terephthalate film. The conductive layer may be a metallized layer of aluminium or copper-formed by vapour deposition or a metal layer containing semi-conductor and binder dissolved to form a coating. Examples of semi-conductive materials are halides of silver, bismuth, gold, indium, iridium, lead, nickel, palladium, rhenium, tin, copper tellurium and tungsten.
Patent GB-248557-A (GB)
Title: Improvements in or relating to stand-pipes for use in the manufacture of coal gas
IPC: C10K1/04
Filed: 1925-03-03
Abstract: 248,557. Aldridge, J. G. W., Carr, W. M., and Ashley, A. E., (Executrix of Ashley, T. J.). March 3, 1925. Ascension pipes.- Gases issuing from a bench of retorts b pass into a stand pipe a of increasing cross-section in the direction of flow of the gases which are scrubbed by a stream of liquid. The stand pipe a comprises a series of set off portions a<1> of increasing bore and the uppermost part is provided with a series of V-shaped baffles g by which the ammoniacal or other washing liquor is directed obliquely across the gas stream. The retort branch connections b<1>, preferably of the type described in Specification 237,111, are provided with sliding valve-plates c operated by a lever arm c<1> on a shaft c<2>, Fig. 4, and inserted through openings on the opposite side of the stand pipe. The plates c are protected by deflector plates d. The washing liquor is projected into the stand pipe through a jet as described in Specification 217,969. The stand pipes may be isolated from the foul main by sliding out of position apertured plates k, and are connected at the bottom directly to a seal box l.
Patent GB-875385-A (GB)
Title: Method for rooting a press column to a platen of a hydraulic press
Inventor: SALTER FRANK SIDNEY
IPC: B30B15/04
Filed: 1958-02-24
Abstract: 875,385. Hydraulic presses. LOEWY ENGINEERING CO. Ltd. May 25, 1959 [Feb. 24, 1958], No. 5858/58. Class 69 (2). A method of rooting the column a of an hydraulic press to the bore of the platen b comprises the steps of supporting a liner f in the bore, applying axial pressure to the lines to tighten the liner against the column and the wall of the bore mounting are the press means to retain the liner in the stressed condition after removal of the axial pressure, and then removing the axial pressure from the liner whilst leaving the retaining means in position. The liner may consist of a number of soft brass rings f or segments which are supported on a shoulder d on the column and are radially extended into engagement with the column and a steel bush g, which is shrunk into the bore c, by axial pressure transmitted from the ram or rams of the press and the cross-head to the liner by a split tubular distance piece h and a gland ring i. While the pressure is applied to tension the column and compress the liner, screws l in a clamping ring j abutting a collar k on the colunm are axially adjusted to bear against the gland ring and retain the liner under compression where the cross-head is raised and the distance piece h removed. In another embodiment, a toughened brass liner m, Fig. 2, is internally tapered to engage a correspondingly tapered portion on the column and retained under compression by screws l in a split nut h. A " backnut " may be provided if the column is prestressed. In a further embodiment, the outer surface of the liner is tapered and engages a corresponding taper on the bush in the bore, the inner surface of the liner engaging a steel bush on the column; the steel bush may have a hardened surface to permit relative movement of the column if the column is not pre-stressed. The means for rooting the column may be provided on the outer wall of the platen.
Patent GB-372448-A (GB)
Title: Improvements in and relating to means for controlling the operation of sheet-printing presses
IPC: B41F3/58
Filed: 1931-02-25
Abstract: 372,448. Printing machines. SCHNELLPRESSENFABRIK AKT.-GES., HEIDELBERG, Heidelberg, Germany. Feb. 25, 1931, No. 5888. Convention date, Feb. 25, 1930. [Class 100 (ii).] Starting and stopping arrangements.-In a cylinder press the starting and stopping of the press, paper feed, and printing are effected in the required sequence from a common operating means. Control levers 2, 3 are arranged on opposite sides of the machine. The reciprocating type bed 44 is raised and lowered by eccentrics 72 on shafts 7, 7<1> oscillated from a cam 48 on the driving shaft 40 by levers 51 .. 56. The lever 53 is freely mounted on the shaft 7 and may be engaged with a plate 58 secured thereto by a spring pin 57. A swinging lever 9 is secured to the shaft 7 and is normally prevented from contacting with a toe 14 on the lever 2 by a lever 12 operated from a cylinder 17. In the first position of the control levers the cylinder 17 is in temporary communication with a vacuum chamber 19 through a pipe 18 and atmospheric pressure actuates the piston 16 to turn the lever 12 and move the rod 9 clear of the toe 14. The machine is then running normally with paper and printing. In the second position a cam 4 on the lever 3 operates a lever 6 to disconnect the spring pin 57. The shafts 7, 7<1> and bed 44 are then stationary in the lower position. In position III a lever 34 opens a flap 35 in the vacuum chamber and destroys the suction of the sheet-feed suckers 59. In the final position the driving clutch 32 of the machine is disconnected and the press stops. If the paper feed is faulty, suction nozzles 20<1> beneath the sheets become uncovered and break the vacuum in the chamber 19. The rod 12 is then inoperative and the swinging lever 9 turns the control lever into the press stop position.
Patent GB-525490-A (GB)
Title: An improved thermally insulated container for foodstuffs and the like
IPC: A47J41/00
Filed: 1939-02-22
Abstract: 525,490. Cold and heat retaining vessels. LEACH, A. E., and MARCO REFRIGERATORS, Ltd. Feb. 22, 1939, No. 5900. [Class 64 (ii)] A thermally insulated container comprises an inner receptacle a having the front, back and sides made of one piece of sheet metal joined by electric welding down one corner, a separate bottom being attached by a butt weld, and an outer receptacle or casing b having the front bottom and back made in one piece and the sides made separately and attached by electric welding, the two receptacles being placed one within the other and the cavity therebetween being filled with a thermally insulating material c such as cork or kapok. The receptacles have cross swaged ribs b<2> and are each flanged round the upper edge, the two flanges a<1>, b<1> being bent over and attached to a wooden frame d without meeting and clamping against the frame a gasket e co-operating with a thermally insulated hinged lid f. Detachable leaf springs n on the inner receptacle position a food container therein. The lid has a hook l engaged by a link k swivelling on a lever j pivoted to lugs i on the outer receptacle to form a catch. All corners are rounded and the container is galvanized.
Patent GB-139768-A (GB)
Title: Improved detachable wheel for vehicles and operating tool therefor
IPC: B60B3/18
Filed: 1920-02-27
Abstract: 139,768. Compagnie d'Applications MÚcaniques. March 3, 1919, [Convention date] Wrenches.-A spanner 14 for turning a wheelsecuring nut 4 which is locked by a radially movable spring-pressed bolt 6 is provided on certain of its sides with recesses 15 to allow movement outwards of the head 11 of the bolt 6 when it takes between two teeth on the hub during the final tightening-up of the nut.
Patent GB-374071-A (GB)
Title: Improvements relating to the chlorinating treatment of iron sulphide containing material
IPC: C22B1/08
Filed: 1931-02-25
Abstract: In the recovery of sulphur by the treatment of material containing iron and other sulphides, e.g. nickel and copper, with a chlorinating agent, such as chlorine, sulphuryl or sulphur chloride, such an amount of chlorinating agent is used that ferric chloride is formed and carried forward with the chlorinating gases to react with additional iron sulphide to form ferrous chloride and sulphur, thus leaving a residue containing copper and nickel chlorides and concentrating the ferrous chloride in the remainder of the charge. The material is passed in counter-current with chlorine through a rotary reaction chamber and the temperature is arranged to increase gradually from atmospheric at the charging end to 550 DEG  C at a midway point and decrease to 300 DEG  C. at the discharging end, the sulphur vapour being withdrawn at a point near the charging end where the temperature is 450 DEG  C.  The chlorine is admitted at the discharging end as the ore reaches the position of maximum temperature and reacts to form ferrous, nickel, and copper chlorides and sulphur.  As the discharging end is approached, the ferrous chloride is converted to ferric, is volatilized and reconverted to ferrous chloride by the fresh sulphide material, a separation of nickel and copper chlorides and a concentration of the ferrous chloride being effected.  The ferrous chloride concentrate is treated with air at 700-800 DEG  C. to form ferric oxide and recover chlorine which is used for the treatment of fresh material.  Specifications 374,069 and 374,070 are referred to.
Patent GB-665450-A (GB)
Title: Improvements in or relating to magnetrons
IPC: H01J25/56
Filed: 1948-02-27
Abstract: 665,450. Magnetrons. DEPARTMENT OF COMMERCE, DIRECTOR OF THE OFFICE OF TECHNICAL SERVICES OF. Feb. 27, 1948 [Jan. 17, 1946], No. 3981/48. Class 39 (i). A magnetron having a ring of interleaving anode posts 161, 17<SP>1</SP> connected alternately to opposing surfaces 12, 13 of a cavity resonator 10, is tuned by relative motion of the opposing surfaces for relative longitudinal adjustment of adjacent anode posts. One or both opposing surfaces 12, 13 may comprise flexible diaphragms. As shown, the free ends of the anode posts terminate in tabs 20, but they may terminate in annular plates. Each annular plate is perforated to allow clearance for the anode posts attached to the opposite plate.
Patent GB-213091-A (GB)
Title: Improvements in electricity meters
IPC: G01R11/36
Filed: 1923-03-02
Abstract: 213,091. Amberton, R. March 2, 1923. Induction motor meters; special quantities, registering.- An alternating-current supply meter is furnished with a braking electromagnet connected across the mains and having its magnetic core so proportioned that the braking field is proportional to the supply voltage. A pair of electromagnets each of the form shown and provided with a winding g acts on the armature disc, for example of an induction motor meter, which rotates in the air gap n. The coils g are connected in series with one another across the supply mains, the braking effect being therefore greater on a rise of pressure and the rate of the meter being independent of small changes of pressure. The invention is applicable to the meter described in Specification 198,772, in which the armature rotates at a predetermined speed on no load. An auxiliary limb k may be provided wound with a series coil m which produces a flux across the gap n in opposition to the main flux due to the coil g, the effect being to cause the rate of the meter to increase with a load of low power-factor.
Patent GB-122559-A (GB)
Title: Improvements in the Connecting Rod Bearings of Internal Combustion Engines.
IPC: F16C9/04
Filed: 1918-04-10
Abstract: 122,559. Triumph Cycle Co., and Stanley, G. E. April 10. 1918. Roller bearings. -A bearing for internalcombustion-engine connecting-rods comprises two sets of rollers B, B<1> held in recesses A<1> drilled from each end of a sleeve A so as to leave a central flange A<2>. The rollers are retained by end rings C<2> either secured to the connecting-rod C<1> or loose on the crank-pin D. A groove A<6> lightens the cage and provides for the distribution of lubricant.
Patent GB-758038-A (GB)
Title: Improvements in or relating to ratchet jacks
IPC: B66F1/06
Filed: 1954-03-02
Abstract: 758,038. Ratchet jacks. REAY, A., [Representative of Reay, H.]. Feb. 11, 1955 [March 2, 1954], No. 6106/54. Class 78 (3). In a ratchet jack movement of the end A of an actuating lever 16 is converted into linear movement of the driving pawl 13. This is effected by inserting a floating member 19 between arcuate surfaces 15, 18 on the pawl and lever; a link (not shown) being pivoted to the pawl and lever to retain member 19. In a modification (not shown) surfaces 15, 18 are concave and surfaces 20, 21 are convex. According to a further modification (not shown) the pawl and lever are coupled solely by a freely pivoted connecting rod.