baber/WOPTO huggingface dataset:
Patent GB-999322-A (GB)
Title: Improvements in or relating to electrical apparatus including a cathode ray tube
IPC: H04N5/57
Filed: 1962-11-02
Abstract: 999,322. Cathode - ray tube circuits. GENERAL ELECTRIC CO. Ltd., R. R. HARMAN, and J. J. JAROSZ. Nov. 1, 1963 [Nov. 2, 1962], No. 41575/62. Heading H4T. The bias voltage applied to the brightness control potentiometers 21 (Fig. 2) of a television receiver is derived by rectification of the voltage across a winding 26 coupled to the line oscillator so that adjustment of 21 to increase the brightness (increasing positive bias on control grid of video amplifier 17) beyond a position at which the increased current flow to the accelerating electrode of the picture tube is likely to overload the voltage supply for such electrode (also derived from the line oscillator) results in overloading of the line oscillator causing a drop in the voltage across winding 26. In another arrangement the brightness control bias voltage is derived by rectification of the normally equal voltages across two windings 33, 36 (Fig. 3) so coupled to the line oscillator that when the latter is overloaded the voltages become unequal, that derived from winding 36 being'the smaller. The invention is described in connection with a colour television receiver for the N.T.S.C. system and as shown in Fig. 1, comprises a tri-gun picture tube 9 the accelerating electrodes of which are fed via a regulator 16 with a voltage derived from rectifier 16 fed from the line oscillator 12 and the cathodes of which are fed from the video amplifier 10 (valve 17 in Figs. 2 and 3).
Patent GB-1214026-A (GB)
Title: Stabilised composition of polyphenylene oxide
IPC: C08K5/00
Filed: 1968-08-30
Abstract: 1,214,026. Stabilizing polyphenylene oxide. SUMITOMO CHEMICAL CO. 30 Aug., 1968 [2 Sept., 1967], No. 41594/68. Heading C3R. Polyphenylene oxides are stabilized by incorporating therein (a) certain hindered phenols and (b) certain phosphites, thiophosphites, thioethers or metal dithiocarbamates. The polyphenylene oxides have the formula where R<SP>1</SP> and R<SP>2</SP> are hydrogen or halogen atoms or hydrocarbon, cyano, alkoxy, phenoxy, nitro, amino or sulpho groups and n is at least 100. Additive (a) is a monophenol of formula where R<SP>17</SP> and B<SP>19</SP> are hydrocarbon groups and R<SP>18</SP> is hydrogen or a hydrocarbon group; a bisphenol of formula where R<SP>20</SP>, R<SP>21</SP> and R<SP>22</SP> are hydrogen atoms or hydrocarbon groups, one A attached to each ring is hydroxyl and the other is a hydrocarbon group or hydrogen, and n is 0 to 20; a trisphenol of formula where R<SP>23</SP>, R<SP>24</SP> and R<SP>25</SP> are hydrogen atoms or hydrocarbon groups, one A attached to each ring is hydroxyl and the other is a hydrocarbon group or hydrogen; a trisphenol of formula where R<SP>26</SP> is a hydrocarbon group and Y is a group of formula where B<SP>27</SP>, R<SP>28</SP> and R<SP>29</SP> are hydrocarbon groups or hydrogen, one A is a hydroxyl group and the other A is a hydrocarbon group or hydrogen; or a thiobisphenol. Additive (b) is a trialkyl or triaryl phosphite of formula a trialkyl or triaryl thiophosphite of formula a thioether of a carboxylic acid ester of formula a thioether of formula where R<SP>3</SP>, R<SP>4</SP>, R<SP>5</SP>, R<SP>6</SP>, R<SP>7</SP>, R<SP>8</SP>, R<SP>9</SP>, R<SP>10</SP>, R<SP>11</SP> and R<SP>12</SP> are each hydrocarbon groups of 6 to 20 carbon atoms and n is 1 to 20, or a metal alkyl- or aryl-dithiocarbamate of formula where R<SP>13</SP>, R<SP>14</SP>, R<SP>15</SP> and R<SP>16</SP> are hydrocarbon groups of 1 to 20 carbon atoms and M is zinc, cadmium or nickel. Each additive is used in an amount of from 0À005% to 5% by weight of the polymer. Examples are given.
Patent GB-1242111-A (GB)
Title: 3-pyrazolidinone derivatives
Inventor: STEVENS JOHN
IPC: C07D231/08
Filed: 1968-08-30
Abstract: 1,242,111. 3-Pyrazolidone derivatives. MINNESOTA MINING & MFG. CO. 13 Aug., 1969 [30 Aug., 1968], No. 41637/68. Heading C2C. [Also in Division G2] Novel 3-pyrazolidones of the general formula wherein R and R<SP>1</SP> each represent H, alkyl, substituted alkyl, cycloalkyl, aralkyl or aryl groups and the alkyl group of said radicals contains 1-6 C atoms, or R and R<SP>1</SP>, together with the N atom to which they are attached, form a heterocyclic ring which may contain one or more additional heteroatoms; R<SP>2</SP> represents an aryl or substituted aryl group, are prepared by one of the following methods: (1) by reacting a compound wherein R<SP>3</SP> is H or an alkyl group, with R<SP>2</SP>NH.NH 2 ; (2) by hydrolysing a 3-pyrazolidinimine of the general formula or (3) by reacting an ester of general formula with R<SP>2</SP>NH.NH 2 . In the examples the compounds 4-morpholinomethyl-1-phenylpyrazolidin - 3 - one, 4 - dimethylaminomethyl - 1- phenylpyrazolidin-3-one and its hydrogen oxalate salt, 4-dimethylaminomethyl-1-p-chlorophenylpyrazolidin-3-one and 4-piperidinomethyl - 1 - phenylpyrazolidin - 3 - one are prepared.
Patent GB-983655-A (GB)
Title: Hydraulic circuit suitable for tractor drawn scrapers
IPC: E02F3/65
Filed: 1962-11-05
Abstract: 983,655. Earth-moving, bowl type scrapers. CATERPILLAR TRACTOR CO. Nov. 5, 1962 [Nov. 24, 1961], No. 41685/62. Heading E1F. [Also in Division F1] An hydraulic circuit for a bowl-type earth scraper comprises a plurality of reversible fluid motors, a source of fluid under pressure, valve means including a control element for each motor, separate conduits connecting each control means to its associated motor for supply or return of fluid, and a conduit common to all the motors for return or supply of fluid through the valve means. Fig. 2 shows a circuit for a tractor drawn earth scraper, comprising two jacks 16 in parallel for raising or lowering the bowl and scraper, a jack 18 for operating an apron for the bowl, and a jack 20 for operating an ejector to empty the bowl. A reservoir 36, pump 35, relief valve 42, and control valve housing 22 are mounted on the tractor, and the control valves 16a, 18a, 20a are connected to jacks 16, 18 and 20, by conduits 46, 48 and 50, respectively, and by a common conduit 54, whereby only four conduits have to bridge the articulated connection between the tractor and the scraper. The three valves 16a, 18a, 20a, are operable independently to connect conduits 46, 48 and 50 respectively to the pump output, when the jacks 16, 18 or 20 are required to perform their working strokes, i.e. to raise the bowl or apron or to eject earth from the bowl, respectively. Operation of any one valve in this sense connects the common conduit 54 to reservoir. Operation of any valve in the opposite sense connects conduit 54 to pump pressure, but connects only the corresponding one of conduits 46, 48 or 50, to reservoir, so that only the corresponding jack moves. Since the apron may be subjected to considerable external forces tending to raise it, the conduit 57 connected to the common conduit 54 contains a check valve 65 in a housing 64 on the scraper, which valve is normally closed by a spring so that when valve 16a or 20a is actuated to connect line 54 to reservoir, the rod end of jack 18 remains isolated. Pressure in line 54, however, moves valve 65 to the right to admit fluid to the rod end of jack 18, and pressure in line 48 operates on a piston 71 through passage 68, chamber 69 passage 70 and ports 72, to open the valve and allow fluid to flow from the rod end of the jack. A relief valve body 74 is also provided to connect the rod and head ends of the jack 18 when the external forces exceed a predetermined maximum, or when the bowl is raised, and the apron must rise with the bowl. The pressure in the head end of the jack is present in chamber 69, and the rod end communicates with the interior of valve body 74 through passage 78 and ports 81. When the force tending to raise the apron exceeds a predetermined amount, body 74 moves to the left and ports 80 connect the two sides of the jack.
Patent GB-1281625-A (GB)
Title: Spindle driving arrangement for spinning or twisting machines
Inventor: NIMTZ KLAUS
IPC: D01H1/241
Filed: 1970-09-01
Abstract: 1281625 Spindle drive PALITEX PROJECTCO GmbH 1 Sept 1970 41712/70 Heading DID A tangential belt drive for spindles comprises a movable barrel-shaped tensioning roller for urging the belt against the spindle whorls. The tensioning roller is movable only to such an extent that when it is in the non-tensioning position, one side of the belt is still just in tangential contact with the respective spindle whorl and the centre section of the other side of the belt is in contact with the barrel-shaped roller.
Patent GB-1463229-A (GB)
Title: Process for the preparation of 4,4,7,7-tetrachlorthioindigo in pigment form
IPC: C09B7/10
Filed: 1975-10-15
Abstract: 1463229 Preparing 4,4<SP>1</SP>,7,7<SP>1</SP>-tetrachlorothioindigo BAYER AG 15 Oct 1975 [6 Dec 1974] 42261/75 Heading C4P 4,4<SP>1</SP>,7,7<SP>1</SP>-Tetrachlorothioindigo is prepared in pigmentary form by oxidizing 3-hydroxy-4,7- dichloro-1-thionaphthene in an alkaline medium in the presence of oxygen or an oxygen-containing gas. The oxidation is carried out in an aqueous or aqueous-organic phase, e.g. waterpyridine water-ethoxyethanol, water-ethanol or water-diethylene glycol monoethylether at 50- 100‹ C. An emulsifier or dispersing agent may be present during the oxidation step or added subsequently thereto with stirring. The pigments are used to colour lacquers and plastics.
Patent GB-1319476-A (GB)
Title: Trigger actuated switch device for a portable electric tool
IPC: H01H9/06
Filed: 1970-09-03
Abstract: 1319476 Retractive switches; hand actuating devices for switches; resistance motor controllers LUCERNE PRODUCTS Inc 3 Sept 1970 [18 Sept 1969] 42300/70 Headings H1N and HIS [Also in Division B3] A trigger-actuated combined switch and speed control device for a portable electric motor driven tool comprises a contact carrier 25 reciprocable in the switch casing 10 and having a trigger handle 50 mounted thereon with manually operable means 72, 70 for selectively positioning the trigger 50 with respect to the carrier 25 whereby the maximum travel can be preset. As shown, the carrier 25 is retained in the housing 10 by a projection 42 co-operating with a groove 43, and the trigger 50 is retained on carrier 25 by a projection 57 co-operating with a slot 62. The materials are sufficiently resilient to allow the carrier 25 to be initially inserted into the housing 10 and the trigger 50 to be assembled thereon by forcing into position. The screw 70 is adjustable by its head 72 to vary the spacing A<SP>1</SP> and thus set the maximum distance the carrier 25 can be moved into housing 10. The carrier 25 is provided with two contact members 15 (15<SP>1</SP>, Fig. 1, not shown) for bridging fixed contacts 11, 12 (11<SP>1</SP>, 12<SP>1</SP>) when depression of tripper 50 allows members 15 (15<SP>1</SP>) to drop off an insulating cam 37 which is formed integrally with housing 10 and serves to secure the contacts 11, 12 (11<SP>1</SP>, 12<SP>1</SP>). The carrier 25 is also provided with a wiping contact 45 (Fig. 6) which slides over a resistance strip 46. A reversing switch 85, operable by a handle 86, is also fitted.
Patent GB-1116394-A (GB)
Title: Method of and circuit for detecting input pulses
IPC: H03K5/26
Filed: 1965-10-06
Abstract: 1,116,394. Detecting pulses. INTERNATIONAL BUSINESS MACHINES CORPORATION. 6 Oct., 1965 [4 Nov., 1964], No. 42493/65. Heading H3T. Pulses are detected by their effect on a stored electric charge which is periodically set to a definite value and subsequently sensed, the input pulses being applied at a frequency lower than that of the alternate setting and sensing of the charge. In the Figure, a rotating magnet 10 generates sinusoidal oscillations in coils 14, 14<SP>1</SP> which are anti-phase and are fed respectively to two identical detecting circuits 8, 8<SP>1</SP>. The half-cycle in which the top of the coil is negative drives current through diode 20 and transformer primary 36P, inducing a voltage in the secondary 36S which charges capacitor 34 through diode 32. In the next half-cycle current flows through diode 18, base-emitter path of transistor 24, resistor 50 and diode 42, the latter short-circuiting the transformer primary to prevent any signal appearing at the secondary. Transistor 24 then conducts and capacitor 34 discharges through transistor 24, the baseemitter path of transistor 46, resistor 52 and transformer secondary 36S. Transistor 46 then conducts and a signal appears on the output line 56. The current through the winding 36S induces a voltage in winding 36P which passes current through resistor 50, emitter-base junction of transistor 24, diode 18 and coil 14. Transistor 24 is thus maintained conducting until capacitor 34 has discharged completely. If the pulse generator 26 produces a signal between the above two half-cycles, this is applied through diode 27 to transistor 24 and discharges the capacitor prematurely so that the output signal at 56 occurs before the second half-cycle in coil 14. An identical circuit 8<SP>1</SP> is supplied with anti-phase sinusoidal signals from coil 14<SP>1</SP> but in-phase pulses from generator 26 through diode 27<SP>1</SP>. The output of circuit 8<SP>1</SP> is delayed by a half-period at 62 so that signals will coincide on lines 56 and 60 only if no pulse has been suppllied by the generator. This coincidence is sensed by AND-gate 58 and detector 66. Provided that the frequency of the pulse generator is not greater than that of rotation of the magnet 12, simultaneous turning- on of transistor 24 by both inputs will not result in loss of detection of the pulse since this cannot occur in both circuits 8 and 8<SP>1</SP>. If the frequency of the pulse generator is lower than that of rotation of the magnet, a signal should appear at 66 at least every few cycles. Failure of this indicates mal-functioning of the circuit which thus has a " fail-safe " feature. If the pulses from the generator 26 are sufficiently short, the angle between the coils 14 and 14<SP>1</SP> may be less than 180 degrees. The generator 26 may be a piezo-crystal or magnetic pick-up.
Patent GB-1358200-A (GB)
Title: Apparatus for reducing the thickness of metal
IPC: B21B13/18
Filed: 1971-09-13
Abstract: 1358200 Pendulum rolling mills IMPERIAL METAL INDUSTRIES (KYNOCH) Ltd 16 Nov 1972 [13 Sept 1971] 42539/71 Heading B3M A pendulum rolling mill, of the kind having roll-carrying, oscillatable arms 1 and 2 driven by separate electric motors 14, is provided with a shaft 17 connecting the motors together. The shaft has a central coupling 18 for allowing relative angular adjustment between its halves 17a and 17b, and is coupled by bevel gearing to crank-shafts 13 which oscillate the arms 1 and 2. The voltage applied to the upper motor is greater than that applied to the lower one, so that the motors supply a difference in driving torque which holds the shaft in a state of torsion and thereby eliminates backlash in the driving arrangement. The voltage is infinitely variable and may be manually varied or controlled automatically by sensors which monitor the relative positions of the arms 1 and 2.
Patent GB-878545-A (GB)
Title: Improvements in or relating to the assembling of boiler tube walls
Inventor: LIMPOUCH BOHUSLAV
IPC: F22B37/20
Filed: 1959-12-16
Abstract: 878,545. Packaging. PRVNI BRNENSKA STROJIRNA, ZAVODY KLEMENTA GOTTWALDA, NARODNI PODNIK. Dec. 16, 1959, No. 42852/59. Class 94(1). Prefabricated units of boiler tubing are stiffened for transport and handling by being temporarily connected to form walls of hollow bodies or channels of L or U section. Three such units comprising headers 4, tubes 3 and connectors 5 may be arranged in U form and held together by temporary braces 6. Alternatively, two units may be joined at right angles, the ends of the headers and connectors being bolted to braces to form a triangular structure Fig. 1, (not shown).
Patent GB-1078521-A (GB)
Title: Improvements in or relating to aircraft flight systems
Inventor: BOOTHBY GEOFFREY FRANCIS
IPC: G05D1/06
Filed: 1962-06-01
Abstract: 1,078,521. Automatic control of aircraft. SMITHS INDUSTRIES Ltd. Sept. 2, 1963 [June 1, 1962], No. 43008/61. Heading G3R. An aircraft is banked in dependence on combined measurements of lateral acceleration and lateral displacement from a predetermined landing approach path so that the aircraft is maintained on the approach path at least partly by side-slip into a cross-wind. As applied to an aircraft landing system involving radio and/or leader cable guidance, cross-wind effects are countered by banking the craft in dependence on lateral acceleration detected by a pendulum so that the aircraft is side-slipped into the wind (side-slipping mode). If the cross-wind is strong it may be only partly countered by side-slipping and partly countered by heading into the wind (mixed mode). One or other of these modes, selectable at will, is introduced by a radio altimeter some time after descent has commenced. The side-slipping mode requires adjustment of the ailerons to get the wings level just prior to touchdown and the mixed mode requires adjustment of the rudder also to produce straight flight at this time. Aileron control. The following signals are combined by applying them to separate control windings of a magnetic amplifier the output of which controls an A. C. velocity servo-system operating the ailerons through a torque limiter and hydraulic actuator:- (a) a signal from a localizer radio receiver transmitted through an intermediate follow-up servosystem and integrated. (b) a phase-advanced signal computed from the output of a roll rate gyro, a yaw rate gyro and a gyro vertical. (c) a differentiated signal from the pendulum detecting lateral acceleration. (d) a signal dependent on the rate of change of a composite signal from the radio receiver and the pendulum applied through a further magnetic amplifier and follow-up servo-system. This signal is removed just prior to touchdown. (e) a signal as at (d) above modified in dependence on angle of bank. Rudder control. The following signals are combined by applying them to separate control windings of a magnetic amplifier the output of which controls an A. C. velocity servo-system operating the rudder through a torque limiter and hydraulic actuator:- (a) a phase-advanced signal from a gyro-magnetic compass manually settable to runway heading. (b) a signal from the yaw rate gyro to which a differential component is added. (c) a phase-lagged signal from the lateral acceleration pendulum if the mixed mode has been selected. This signal, which may be made non-linear with acceleration by the incorporation of a suitable circuit, is removed just prior to touchdown. The Specification contains references to known arrangements for controlling the elevators during descent and to manual control.
Patent GB-1186322-A (GB)
Title: Variable-Load Brake Control Means.
IPC: B60T8/18
Filed: 1968-09-11
Abstract: 1,186,322. Fluid pressure brakes. WESTINGHOUSE BREMSEN UND APPARATEBAU G.m.b.H. 11 Sept., 1968 [11 Sept., 1967], No. 43189/68. Heading F2F. In a variable-load brake controls means 1-16 of a generally-known construction, the mechanical advantage of a lever system 17-22 is varied according to vehicle loading by movement of a fulcrum between two adjustable limits. Levers 18, 21 pivot about a fulcrum 20 ,which is urged by a first force due to a pistonrod 31 of an adjusting piston 32, the chamber 33 of which communicates via union 34 with a medium (e.g. compressed air) of which the pressure depends upon the load, fulcrum motion being opposed by a second force due to a compression spring 46 disposed between a fulcrummounting member 29 and a spring plate 45. A guide-collar 30 of the member 29 projects into a first socket 35 screwed into a housing 1, which socket has a stop 36 for a stop surface 37 of the collar. Screwed into the first socket is a second 38 of which the inner end surface forms a stop 39 for a stop surface 40 on the collar. The positions of the sockets are secured by respective lock nuts 41, 42. Prestressing of the spring 46 is effected by adjustment of a screw 44 in the cover 43 of socket 38 after removal of a dust cover 46. Under a minimum load condition the fulcrum moves to the left until stop surface 37 contacts stop 36 at which point maximum reduction of the controlled brake pressure is achieved and vice versa.
Patent GB-991746-A (GB)
Title: Improvements in or relating to milling machines
Inventor: RUDD HARRY
IPC: B23C5/22
Filed: 1960-12-17
Abstract: 991,746. Milling-cutters. MASSEY-FERGUSON (UNITED KINGDOM) Ltd. Sept. 22, 1961 [Dec. 17, 1960], No. 43513/60. Heading B3K. A holder for a milling cutter blade 23 comprises a shank 20 with locating faces 22 for positioning the blade in different angular settings. The blade is brazed to a front face of the shank and is solid, Fig. 3, or annular, Fig. 4. The faces 22 in turn engage an abutment surface 17 on the cutter body.
Patent GB-988954-A (GB)
Title: Improvements in or relating to process for preparing carboxylic acids and their salts, esters, thioesters and amides
IPC: C07C69/76
Filed: 1961-12-05
Abstract: Carboxylic acids or their salts, esters, thioesters or amides are prepared by reacting together (1) an organic halide, a sulphonic acid ester or sulphuric acid ester of the formula RX, RX2, ROSO2R1 and R2SO4 in which represents a saturated or ethylenically unsaturated aliphatic or cycloaliphatic hydrocarbon radical or such a compound substituted by an alkoxy, acyl, acyloxy, aryl, nitro, nitrato or cyano substituent, X is halogen, and R1 represents an alkyl, alkenyl cyclo-alkyl, aryl, or aralkyl radical, said X, X2, OSO2R1 and SO4 radicals being attached only to primary or secondary aliphatic or cyclo-aliphatic carbon atoms of the R radicals, (2) carbon monoxide, (3) a salt of cobalt or iron hydrocarbonyl and (4) water, alcohols, phenols, mercaptans, ammonia or primary or secondary amines in the presence of sufficient base to keep the reaction mixture basic.  The acid is formed from the product by hydrolysis with acidification. Many starting materials are listed and the reaction may be in a two stage process.  Examples describe the preparation of methyl phenylacetate from benzyl bromide, methyl nonanoate from 1-iodooctane or 1-chlorooctane, methyl 2-methyl octanoate from 2-iodooctane, methyl acetate from methyl p-toluenesulphonate, methyl 3-butenoate from allyl bromide, dimethyl malonate from methyl chloroacetate, p-phenylenediacetic acid from a ,a 1-dichloro-p-xylene, a -naphthylacetic acid from 1-chloromethylnaphthalene, phenylacetanilide from benzyl chloride, phenyl thioacetate from methyl iodide, dimethyl malonate from methyl chloroacetate, dimethyl methyl malonate from methyl a -bromopropionate, ethyl hexanoate from 1-iodopentane, cyclohexyl hexanoate from iodopentane, methyl methoxyacetate from chloromethyl methyl ether, and methyl propionate from diethyl sulphate.
Patent GB-1413062-A (GB)
Title: Galvanizing apparatus
IPC: C23C2/38
Filed: 1973-03-30
Abstract: 1413062 Galvanizing apparatus MANEELY-ILLINOIS Inc 30 March 1973 [28 April 1972] 43739/74 Divided out of 1413061 Heading C7F A galvanizing apparatus for elongate material such as the steel tube formed according to the method of Specification 1413061 comprises a manifold 80 with aligned inlet and outlet orifices for feeding the elongate material, a reservoir 90 for the molten Zn which may contain some Al, a pump for circulating the melt to the manifold and an arrangement for maintaining the manifold filled with melt. The Zn is pumped from reservoir 90 via pipe 91 to the coating chamber 82 of manifold 80. The excess Zn is drained from the full chamber by pipes 96 which extend to below the surface of the Zn in the reservoir to eliminate ZnO formation. Since the coating chamber 82 is maintained full, inert or non oxidizing gas is not needed. Gas burners 99 control the temperature in the coating chamber 82. The entry and exit chambers 81, 83 of the coating chamber extend below the Zn surface 73 in the reservoir 90 to minimize formation of ZnO.