baber/WOPTO huggingface dataset:
Patent GB-745407-A (GB)
Title: New amides and process for making them
Filed: 1953-07-09
Abstract: The invention comprises N-methyl-trimethyl-colchicinamides and their salts, in which the amide group may be substituted by alkyl, alkenyl, cycloalkyl or a cyclic polymethylene group which may be interrupted by a hetero atom.  These are made by reacting N-methyltrimethylcolchicinic acid or a functional derivative thereof with ammonia or the appropriate primary or secondary amine.  Suitable functional derivatives are those in which the hydroxy group is replaced by chlorine, methoxy or p-toluenesulphonyloxy.  Examples show reaction with the following bases: ammonia, methylamine, dimethylamine, allylamine, n-butylamine, n-octylamine, isobutylamine, pyrrolidine, piperidine, cyclohexylamine, ethanolamine and isopropylamine.
Patent GB-255548-A (GB)
Title: Improvements in and relating to talking machines
IPC: G11B19/28
Filed: 1925-05-04
Abstract: 255,548. Tudsbery, H. T. May 4, 1925. Speed-regulating.-In gramophones wherein the sound track is moved at a constant linear speed by controlling the motor from the tonearm, provision is made for putting the controlling means out of action so that the turntable moves at a constant angular speed when desired and also for controlling the governor mechanism so that the maximum and minimum revolution rate can be varied to suit the nature of the record. To obtain constant tracking speed, a lever 6 connected by a pivot 8 to an arm 9 suspended from a fixed pivot 10 is held by a spring 7 in contact with an arm 4 extending from the tone-arm 1 so that as the tone-arm moves across the record a roll 13 carried by the lever 6 moves on a cam surface 12 at the end of a bell-crank lever 11. 18 carrying a brake block 19 for the governor disc 20. The bell-crank 11, 18 is connected by a pivot 14 to a lever 15 mounted on a fixed pivot 16, and the lever 15 is connected by the link 17 to the arm 9. The maximum and minimum revolution rate can be adjusted to suit different records, e.g. spoken records and music records, by causing a different part of the cam surface to operate; this is effected by adjusting the angular position of the lever 15 and arm 9. extensions 27, 25 thereof being movable over graduated scales 28, 26. If the machine is required to play records necessitating uniform angular velocity of the turntable 3, a pivoted arm 23 is turned down to rock and retain the lever 6 clear of the extension 4 in all playing positions. Specifications 24078/07 and 246,939, [Class 57, Governors &c.], are referred to.
Patent GB-1140150-A (GB)
Title: Pipe closure means
IPC: F16L55/11
Filed: 1967-04-26
Abstract: 1,140,150. Pipe closures. PFAUDLERWERKE A.G. 26 April, 1967 [26 April, 1966], No. 19326/67. Heading F2P. A closure device for an enamelled agitator pipe 1 comprises an enamelled cap 9 for closing the pipe end, a tie rod 4 associated with the cap and provided with a bridge piece 2 having a roughened surface for frictionally engaging retention members 3 provided on the interior pipe wall on relative rotation of the bridge piece relative to the pipe, locking pins 8 carried by the tie rod and capable of engagement with or disengagement from recesses 10 of the cap thereby preventing or permitting relative cap/tie rod rotation respectively, and springs 6 urging the tie rod and cap towards one another and serving to urge the cap against the pipe end in the closed position. To prepare the closure cap for entry into the pipe end, a screw (not shown) is adjusted along a threaded bore 11 in the tie rod until it engages the cap end wall and urges the cap and tie rod sufficiently apart to disengage the pins from the recesses 10. The cap is rotated relative the tie rod and the screw withdrawn so that the pins engage the cap end wall. The assembly is then entered into the pipe end and rotated to bring the bridge piece behind the pipe retention members. The engaging surfaces of the bridge piece and retention members are milled to provide frictional contact thereby permitting rotation of the cap relative to the tie rod until the pins snap into the recesses under pressure of the spring plates 6. The spring plates then clamp the cap against the pipe end. A sealing O ring, having a covering of polytetrafluorethylene, or a sealing film of polytetrafluorethylene between the cap/ pipe end surfaces may be provided. To remove the closure, a ferrule may be tightened about the cap and the cap withdrawn by a pull-off device via the ferrule until the locking pins disengage. The cap may then be rotated. After removal of the pull-off device, the closure may then be disengaged. Alternatively hydraulic or pneumatic pressure may be applied to the pipe interior to overcome the spring forces.
Patent GB-712117-A (GB)
Title: A process for the hydrogenation of carbon monoxide
IPC: C07C1/04
Filed: 1951-08-16
Abstract: In the synthesis of hydrocarbons from carbon monoxide and hydrogen at normal pressure in the presence of an iron catalyst, the synthesis gas feed is dried to a water vapour content of less than 30 g. per cm., preferably 4-15 g. per cm.  Where gases are recycled or multi-stage operation is used, the recycle gas or exit gas from an earlier stage is dried before further use as feed.  In an example, the water content is just sufficient to saturate the synthesis gas at 18 DEG  C., i.e. 15.4 g. per cm., and conversion attains a maximum of 40 per cent after 130 hours at 225 DEG  C. Further drying of the feed with calcium chloride and of the recycle gas with activated carbon, results in 80 per cent conversion after 40 hours.  The catalyst comprises precipitated iron, sintered dolomite, copper, and potassium carbonate. Synthesis conditions are those normally used.
Patent GB-1270692-A (GB)
Title: Travelling wave tube
Inventor: SLOCUM KENNETH WATSON
IPC: H01J25/38
Filed: 1969-04-16
Abstract: 1,270,692. Travelling-wave tubes. VARIAN ASSOCIATIONS. 16 April, 1969 [22 April, 1968], No. 19443/69. Heading H1D. Variation with frequency of the gain of a travelling-wave tube amplifier (Fig. 5, not shown) having a coupled resonator blow-wave structure-due to the production of a backward wave and its subsequent reflection towards the tube output-is reduced by mounting at the upstream end of the blow-wave structure a reflective element to produce such reflection of the backward wave that the gain-frequency characteristic is made substantially flat. As described, the sever at the upstream end of the downstream section of a multiply-severed coupled cavity slow-wave structure, in which adjacent cavities are coupled by inductive coupling irises 26 disposed on alternate sides of the beam in adjacent cavities, is provided with a reflective element in the form of a stainless steel rod 34 curved to pass around the electron beam 4 adjacent the interaction gap 25<SP>1</SP> of the cavity next to the sever, and passing through a flexible diaphragm 35 which permits adjustment to ensure the optimum magnitude and phase of the reflected wave before it is fixed in position by a lock nut or epoxy cement. The sever is further provided with a non-reflective attenuator formed by a waveguide section 28 communicating with the cavity through an iris 29 and containing a dielectric tube 31 through which water is passed. Alternatively, at the expense of operating bandwidth, the reflector 34 may be mounted in the waveguide section 28, or in a slow-wave structure cavity close to but downstream from the end cavity of the output section.
Patent GB-279190-A (GB)
Title: Improved manufacture of artificial cork
IPC: B27K7/00
Filed: 1926-08-06
Abstract: 279,190. Wade, H., (Armstrong Cork Co.). Aug. 6, 1926. Drawings to Specification. Cork, treating. - Particles of cork are agglomerated into blocks, boards, &c., by compressing them in a mould, and passing hot gases through them under such conditions that an exothermic reaction of an oxidizing nature takes place. Suitable gases are stated to be air, air and steam, steam alone, furnace gases, and the temperature may be 220‹-350‹ C. The time of treatment varies, but may be 20 min. after the upper surface of an article reaches 100‹ C., the gas being passed upwards. The cork may he preheated to shorten the process. The gas may be passed after use through the heater and be re-used; a weaker reaction occurs thereby. Suitable apparatus comprises a mould with perforated end-plates capable of being locked under pressure, and inlets and outlets for the heated gas. Specification 26074/07 is referred to. Reference has been directed by the Comptroller to Specification 26074/07.
Patent GB-1200574-A (GB)
Title: Voltage regulated power supplies
IPC: G05F1/44
Filed: 1969-04-17
Abstract: 1,200,574. 574. Automatic voltage control. INTERNATIONAL STANDARD ELECTRIC CORP. April 17, 1969 [April 19, 1968], No.19605/69. Heading G3R. [Also in Division H2] A regulated static power supply for maintaining a predetermined D.C. voltage at a load 9 comprises anA.C. source 1 feeding a transformer 2 having two secondary windings A, B of which the latter supplies a rectifier 3 feeding an inverter 5 whose output is controlled in accordance with the error signal from a comparator 6 receiving the load voltage signal and a signal from reference source 7, the output of inverter 5 being combined with that from the winding A and the combination being rectified, filtered and supplied to the load 9. The output waveform of the inverter 5 is a quasisquare wave of constant amplitude whose pulse duration is varied in accordance with the error signal from comparator 6. The frequency of inverter 5 is chosen to produce a rectified output ripple frequency equal to or greater than the fundamental ripple frequency produced by the rectifier action on the output from the winding A. In the three-phase embodiment shown in Fig.2, the inverter 5 is generally similar to that described in Specification 1,148,439 and provides a constant amplitude, variable pulse duration output to the primary winding of a transformer 12 which forms part of a summing rectifier comprising the diodes D1 to D12. The latter form two conventional three-phase bridge rectifiers MR1, MR2 whose inputs are derived from the main transformer 2 and whose outputs are connected to the secondary windings of the transformer 12, these windings being similarly poled and having centre taps providing an output voltage waveform 11. At instants when the inverter output voltage is zero the bridge rectifiers operate normally, but when an output voltage is present the conducting paths through the rectifiers are altered due to certain diodes being biased into non-conduction by the voltages produced in the secondary windings of transformer 12. Derivation of the output from the centre taps of the windings provides a balanced average distribution of current between the diodes D1 to D12.
Patent GB-205557-A (GB)
Title: Improvements relating to floor scrubbing, washing and wiping machines
IPC: A47L11/293
Filed: 1922-07-17
Abstract: 205,557. Byrne, E. L. W., (Johannesen, J.). July 17, 1922. Floors, cleaning.-A machine of the type which is traversed across the floor to scrub and wipe it, and which may be used for wiping only, comprises a motor 1 driving horizontally rotating flat brushes 4 and rollers 5 between which runs an absorbent ribbon 7 passing under a roller 6 which presses the ribbon against the floor. The brushes are supplied with water from a tank 9 through a pipe 10, and the used water is absorbed by the ribbon and pressed out by the rollers 5 to flow into a tank 8. When it is desired to wipe the floor only, a pedal-lever 16 is depressed, which acts through bell-cranks 11, 12 to lift the brushes off the floor, and may simultaneously close a cock 17 to cut off the water supply.
Patent GB-1500287-A (GB)
Title: Wired broadcasting systems
IPC: H01B11/00
Filed: 1974-05-03
Abstract: 1500287 Communications cable COMMUNICATIONS PATENTS Ltd 14 April 1975 [3 May 1974] 19660/74 Heading H1A In a communications cable comprising a plurality of pairs of twisted together H.F. conductors one or each of the interstitial spaces defined by the circumscribing cylinder of at least one pair is occupied by a further insulated conductor, its insulation either integral with that of one of the conductors, or with that of a second further conductor if present. In the embodiment shown six pairs of insulated conductors 2-7 are helically wound about a polyethylene core 8, further insulated conductors 9, their insulation integral with that of the conductors, occupying the spaces. The assembled core may be wrapped by a layer 10 of "Melinex" (Registered Trade Mark) or polyethylene terephthalate with an outer polyethylene sheath 11, polyethylene having a suitable insulator for the conductors.
Patent GB-347960-A (GB)
Title: Improvements in friction clutch mechanism
IPC: F16D21/04
Filed: 1930-06-27
Abstract: 347,960. Friction clutches. HADDAN, R., 31, Bedford Street, Strand, London. - ( Wise Patent & Development Co. ; 465, Park Avenue, New York, U.S.A.) June 27, 1930, No. 19663. [Class 80 (ii).] A friction clutch particularly for use in variablespeed gearing for connecting any one of a series of toothed wheels 14, or a driving sleeve 15, with a driven shaft 11 comprises resilient segmental shoes 16 expanded into engagement with a driven member 14, through radially moving taper wedges 18 by a cam bar 12 slidable axially within, and rotatable with, the driven shaft. The cam bar is rendered flexible to give a resilient wear-compensating engaging pressure by a longitudinal saw cut through the major axis of the elliptical cam head 20 on the bar. The inner shoe diameter is slightly greater than the diameter of the shaft 11. The wedges and co-operating sockets formed by the shoe ends taper at preferably 20‹, but not more than 30‹, whereby substantially no radial torque stresses are transmitted to the cam bar. The clutch disengages after withdrawal of the cam by virtue of the resilience of the shoes, and inward movement of the wedges is limited by shoulders 17.
Patent GB-410986-A (GB)
Title: Improvements in or relating to control arrangements for motors, particularly rudder motors
IPC: B64C13/00
Filed: 1933-07-11
Abstract: 410,986. Controlling aircraft and watercraft. SIEMENS & HALSKE AKT.- GES., Siemensstadt, Berlin. July 11, 1933, No. 19672. Convention date, Jan. 4. [Classes 4 and 114.] A servomotor for controlling the rudder of an aircraft or watercraft has a liquid brake and restoring spring in the follow up gear, the flow opening of the brake remaining closed for small displacements from its zero position but open for large displacements. A rudder R is moved by a power cylinder M controlled by a pilot valve connected through levers s<2>, s<3> to an arm h which moves in accordance with the deviation of the craft. Movements of the piston in the cylinder M cause movements of the lover s<2> to restore the pilot valve to its mean position. The piston rod from the power cylinder is connected to a cylinder z, Fig. 2, moving in a casing G, the cylinder being divided into two compartments by a piston c having a restricted passage e through it. In its zero position and for small displacements in each direction the passage e is closed by a piston on a rod f fixed to the casing G. A rod connected to the piston c passes through two discs d<1>, d<2> pressed apart by a spring F, the discs abutting against projections a<1>, a<2> on the casing and against shoulders on the rod so that the parts are restored to zero position after displacement. When a reversible electromotor is used to move the rudder, the arm h may co-operate with contact segments which follow up the arm, the transmission having a vane wheel moving in a cylindrical casing with a passageway normally closed by pistons arranged in a circle in the casing. A restoring spring is provided for the vaned wheel.
Patent GB-705814-A (GB)
Title: Improvements relating to lathes for turning the grooves in pilger and like rolls
IPC: B23Q35/08
Filed: 1952-08-05
Abstract: 705,814. Copy-turning. BECKER; H. Aug. 5, 1952 [Aug. 9, 1951], No. 19715/52. Class 83 (3) A lathe for turning the grooves in Pilger and like rolls has a tool holder Teciprocable towards and away from the work in synchronism with the work rotation, the tool holder and its guides being carried by a rotatable support, and is characterized in that adjustment of the tool holder for depth of cut is effected indirectly through compensating gearing which causes displacement of the tool holder on its guides additional to that provided by: the mechanism which effects reciprocation of the tool holder and operates through at .least part of the driving elements of the said reciprocating mechanism. The work 1, Fig. 2, is rotated by the machine spindle 2 driven from an electric motor 3 through gearing 4-7. The motor also drives, through gearing 8-12, Fig. 5, a shaft 13 with a cam-disc 14 in the cam groove of which engages a roller 17 on a rack 16. The latter is reciprocated by the cam and moves a pinion 18 which rotates a shaft 19, Fig. 3, and drives, through a differential gear 20-22, a shaft 23 and 'through bevel gears 24, 25 a vertical spindle 26 carrying a  pinion 27 engaging a rack 29 secured to the tool slide 28. The latter is mounted on a rotary base 35 for producing the circular motion component required to turn the roll groove and rotation of the base is effected by 'worm gearing 34 from a shaft 30, Fig. 5, and toothed gearing 31, 32. As the base 35 rotates to give' circular movement. to the tool the rack 29 for the tool slide is moved and a compensating movement of the pinion 27 is necessary to counteract this. Rota- 'tion of shaft 30 is therefore arranged, through gears 31, 37 and differential gearing 38-40, to rotate a worm 41 which turns, the casing 36, Fig. 3, of the first differential. The casing 42, Fig. 5, of the second differential may be moved during cutting by hand-rotation of a worm 43 which gives an additional movement to the toolslide and thus allows the depth of cut of the tool to be increased or decreased during working as required.
Patent GB-669865-A (GB)
Title: Electrical indicating or recording instruments
Inventor: DEACON LIONEL OAKLEY
IPC: G08C19/18
Filed: 1949-07-27
Abstract: 669,865. Frequency measurement. CHAMBERLAIN & HOOKHAM, Ltd., and DEACON, L. O. July 4, 1950 [July 27, 1949], No. 19721/49. Class 37. In a device (Fig. 1) for indicating the number of incoming electrical impulses per unit time, e.g. from a power station load measuring instrument, a shaft r is stepped by a ratchet and pawl a, t, electromagnetically operated by the impulses to rotate a cam v, which alternately closes one pair of contacts w during each half revolution. Electromagnets m are thus energized to alternately connect each of the two clocks j to rotate an associated spring-loaded gear-wheel f freely mounted on a spindle a carrying an indicating pointer c which is in turn rotated against its return spring b by arms h engageable by projections g carried by the wheels, and released twice per revolution on the disengagement of a pawl o from a ratchet n by the momentary energization of an electromagnet p through the contacts y closed by the cam x on the shaft r. If, e.g. 30 impulses rotate the shaft by one half revolution, the spindle a is alternately turned by each clock through an angle proportional to the time during which the impulses are received, and allowed to return to its starting point, so that the scale d and the pointer a may be calibrated to indicate the frequency per minute based on the last, e.g. 30 impulses received. In a modification, Fig. 2 (not shown), an additional cam on the shaft r operates contacts to alternately start and stop the clocks in addition to their engagement and disengagement.
Patent GB-459534-A (GB)
Title: Convertible mechanical toy
IPC: A63H33/04
Filed: 1935-07-10
Abstract: 459,534. Toys. ARNOLD, C., 47, Deutschherrnstrasse, Nuremberg, Germany. July 10, 1935, No. 19739. [Class 132 (iii)] Toy comprises a box a, Fig. 1, containing different vehicle bodies, for example, a rail zeppelin b, tank b<1>, locomotive b<11>, and motor car b<111>, the bodies being of sheet metal or wood and having plates g with bayonet slots f for engaging the axles l of the wheels d of the frame c carrying the driving motor. The plates g are covered by extensions of the side walls of the body if the wheels are to be invisible. The plates g may be omitted in the case of the motor car body, and the slots f provided directly in the side walls of the body. The frame c has on its front end upwardly extending lugs h, Fig. 4, on which a U-shaped plate m is pivotally mounted on a pin i. The axle l carrying the front wheels d is journalled in the arms of the plate m, and is pressed away from the lugs h by a spring k wound on the pin i and secured at one end to the plate m and bearing with its other end against one of the lugs h.
Patent GB-332042-A (GB)
Title: Improvements in apparatus for delivering measured quantities of liquids
IPC: B67D7/16
Filed: 1929-06-27
Abstract: 332,042. Triggs, W. W., (Wayne Co.). June 27, 1929. Fixed - chamber apparatus having a transparent container 4 into which project a supply pipe 6, a fixed overflowpipe 8, and a vertically adjustable discharge pipe 14, embodies interlocking mechanism for preventing simultaneous operation of the setting gear and discharge valve. The discharge pipe 14 slides within a well 9, open to the delivery passage 11, and is vertically adjusted from a handle 32 through a pinion 30 which gears with a rack-bar 22 and is connected through a cross-piece to a rod 16 extending through the well 9 into engagement with the pipe 14. A rod 46 carries stops 59 and through bevel gearing 53, 56 may be rotated by a knob 58 to bring one of the stops into the path of a projection 25 from the rack-bar 22. Axial play is allowed to the rod 46 and as the pipe 14 is lowered a pin is pressed into fixed recesses and prevents further movement of the knob 58. At the same time a grooved continuation 52 of the rod 46 sliding freely through the pinion 53 moves a stop 45 from the path of a lug 71 on a threearmed lever 38 pivoted to a fixed bracket 36. The arm 40 is connected by a rod 44 to the shaft of the discharge valve handle 13 which, since the lug 71 is now unobstructed, may be operated. At the same time, the third arm of the lever 38 disconnects the clutch parts 76, by which the pinion 30 is connected to the handle 32.
Patent GB-367290-A (GB)
Title: Method and apparatus for machining rolls for rolling mills and and the like
IPC: B23Q35/08
Filed: 1931-07-10
Abstract: 367,290. Shaping rolls for rolling- mills. MANNESMANNRÍHREN - WERKE, 1B, Berger Ufer, D³sseldorf, Germany. July 10, 1931, No. 19896. Convention date, Feb. 23. Addition to 353,829. [Classes 83 (ii) and 83 (iii).] The process for machining the grooves of Pilger rolls described in the parent Specification is modified by subjecting each roll to transverse displacements during the machining operation in order to form one or more depressions e in the circular part of the roll profile. For this purpose the spindle 44 which effects. lateral adjustment of a pair of headstocks 38 may be operated automatically from the spindle 28 through chain gearing 52, coupling 53, shaft 51 and worm gear 50. The spindle 51 may be rotated by other means such as by templets or servomotor apparatus to give any desired configuration to the depression e.