baber/WOPTO huggingface dataset:
Patent GB-1224898-A (GB)
Title: Improved steels
Inventor: DECROIX J
IPC: C21D8/00
Filed: 1968-06-07
Abstract: 1,224,898. Austenitic steels. UGINE KUHLMANN. June 7, 1968 [June 7, 1967], No.27294/68. Heading C7A. A stainless austenitic steel consists, by weight, of and is subjected to work-hardening when hot followed by cooling so as to bring the metal to ambient temperature while retaining the crystal structure resultant upon the hardening. The steel may be used to form superheater tubes, valves for I.C. engines and turbine parts.
Patent GB-655712-A (GB)
Title: Process for after-treating dyeings
Filed: 1948-10-22
Abstract: Dyeings produced on wool with acid dyestuffs containing an o-amino-o1-oxy-azo grouping in the chromed condition are after-treated with an aldehyde or a condensation or polymerization product capable of yielding an aldehyde.  Suitable aldehydes are formaldehyde, acetaldehyde, polymerized acetaldehyde, paraformaldehyde, melamine-formaldehyde or urea-formaldehyde condensation products having a high content of formaldehyde, furfural, phthalaldehyde, salicylaldehyde, benzaldehyde sulphonic or carboxylic acids, and mineral acid salts of 3-aminobenzaldehyde.  In examples: wool dyed with the chromium complex of the dyestuff 5 - nitro - 2 - amino - 1 - oxy - benzene -->2 - aminonaphthalene - 6 - sulphonic acid is after treated with formaldehyde, paraformaldehyde or a water-soluble formaldehyde-melamine condensation product; (2) wool dyed with the chromium complex of the same dyestuff as in (1) is after-treated with benzaldehyde-3-sulphonic acid; (3) wool dyed with the chromium complex of the dyestuff 4-chloro - 2 - amino - 1 - oxybenzene - 6 - sulphonic acid-->2-aminonaphthalene is after-treated with formaldehyde; (4) wool dyed as in (1) is after-treated with benzaldehyde-3-sulphonic acid or 3-aminobenzaldehyde dissolved in sulphuric acid solution; and (5) wool dyed as in (1) is after-treated with formaldehyde vapour or is suspended over a solution of formaldehyde or benzaldehyde.
Patent GB-159926-A (GB)
Title: Improvements in automatic train control systems
IPC: B61L3/10
Filed: 1919-11-07
Abstract: 159,926. Haddan, R., (Regan, J. B.). Nov. 7, 1919. Fluid-pressure. - Relates to track controlled systems of the kind described in Specification 158,966 and comprising a normallyclosed train circuit having electromagnetically actuated means for venting the brake pipe controlled by a threeposition relay normally included in a second closed train circuit but for which second circuit there is substituted at intervals a circuit including a track ramp, the condition of the ramp circuit determining the position of the relay armatures. The apparatus described is the same as that described in the Specification referred to except that brake-pipe venting valves X are provided along the train in addition to the venting- yalve 46 on the locomotive, the magnets of the valves being connected in parallel. A manual switch 50 by which the circuit of the valves may be broken by the engineer to apply the brakes is also added. The valve 46 on the locomotive is adapted to cut off the air supply as well as to vent the train-pipe. The relay R on the train is normally in circuit with the train battery B and maintains the armatures e, f, g in the position shown whereby the valves 46, X are energized by the battery B by way of the conductors 1, 25, 24, armature g, conductor 31, switch 50, the return being by conductor 33, the normally closed pushbutton switch C and conductors 38, 13. When the train passes a ramp 12 the switch shoe S<1> is lifted and if the condition is " clear " the relay R is included in the circuit of the track battery B<2> in such a manner as to maintain the armatures e, f, g in the position shown. If " caution " conditions exist, however, the current from the battery B<2> through the relay is reversed and the armatures e, f, g are moved to the right-hand position, thereby also reversing the circuit from the train battery B through the relay after the ramp is passed. The circuit of the valves 46, X in these conditions is as follows :- the battery B, conductors 1, 25, 24, armature g, conductor 28, the speed controller F, conductors 30, 31, 32, 33, the push switch C and conductors 28, 13. If the speed limit is exceeded the contacts of the controller F are separated and the valves 46, X thereby actuated to apply the brakes. If " danger " conditions exist, the track battery B<2> is disconnected so that no current is supplied to the relay B when the ramp is passed and the armatures e, f, g, therefore assume a neutral position in which the circuit of the valves 46, X is broken and the brakes immediately applied.
Patent GB-875603-A (GB)
Title: Improvements in or relating to a method of joining two metal tubes
IPC: B21D39/04
Filed: 1959-08-12
Abstract: 875,603. Welding by pressure; jointing by tube expanding; working by rotary rubbing tools. CALUMET & HECLA Inc. Aug. 12, 1959 [Aug. 18, 1958], No. 27579/59. Class 83 (4). Two metal tubes are joined by assembling the tubes in overlapping relationship with overlapping surfaces in contact and applying a rotational frictional pressure to the exposed surface of one of the overlapping portions to bring the contacting surfaces to welding temperature. The tubes may be of the same or dissimilar metals. A copper tube 22, Fig. 1, is inserted in the expanded end of an aluminium tube 21 and the assembly is held in a die 26. A tool, e.g. formed of a carbide, having flattened portions 29 and a tapered end 30 and of larger diameter than the bore of the tube 22 is rotated at 2000 ... 2500 r.p.m. and forced into the assembly to expand and weld the overlapping portions 23 of the tubes 21, 22. If desired the contacting surfaces of the tubes may be knurled. In an alternative process the tube 32, Fig. 4, has a reduced end 33 fitting within the tube 31. In this case, a closefitting die 36, Fig. 6, may be used to produce a welded joint of even wall thickness. In a modification, the tubes 41, 43, Fig. 7, are held in clamps 46, 47 and are welded by the action of a rotary die 48 moved axially of the tubes and having a circular die aperture with opposed recesses. If desired a mandrel may be used with the rotary die to produce a weld similar to that shown in Fig. 6.
Patent GB-916913-A (GB)
Title: Arrangement for the transmission of energy from a main shaft to a secondary shaft
IPC: F16H57/025
Filed: 1959-08-12
Abstract: 916,913. Toothed gearing; friction gearing. LICENTIA PATENT - VERWALTUNGS - G.m.b.H. Aug. 12, 1959 [Aug. 25, 1958], No. 27582/59. Class 80 (1). [Also in Group XXXV] In a mechanical transmission such as a friction or toothed gear drive between a turbogenerator or other main shaft 1, which may run slightly off-centre, and the shaft 12 of an auxiliary electric or other machine, the transmission is supported from the shaft 1 itself, so that the whole transmission participates in any eccentric movements, and its output shaft 8 is coupled to the shaft 12 through an electromagnetic or hydraulic slip coupling 10 which is constructed to accommodate radial misalignment, thereby allowing relative displacement of the two shafts 8, 12. As shown, the gearing is toothed and comprises a wheel 2 on the shaft 1 engaging a pinion 3 on the shaft 8, the latter being carried by an arm 5 which is freely mounted on the shaft 1 and is held against rotation by fixed stops 7. The gearing runs in an oil container 15.
Patent GB-1412181-A (GB)
Title: Illumination appratus
Inventor: MUEHLOEGGER L
IPC: G03B27/54
Filed: 1973-06-11
Abstract: 1412181 Illumination apparatus DURST AG 11 June 1973 [9 June 1972] 27596/73 Heading G2A A surface 10 is illuminated by apparatus comprising two internally reflecting shafts 1 and 6 connected along the same axis (not shown) or at an angle by an inclined mirror 7, shaft 1 being of constant cross-section and shaft 6 being of variable cross-section. Shaft 1 is closed by a hood 12 and contains cooling fan 11, light source 3, variable aperture diaphragm 4, electrically actuated shutter 4a and diffusers 5. Shaft 6 is situated between diffusers 9 and comprises angle members 13 which are movable towards and away from one another by means of a toggle lever, threaded rod or rack and pinion system. Diffusers 5 and 9 may be heat filters. Mirror 7 may be a cold light mirror (transmitting infrared).
Patent GB-214193-A (GB)
Title: Improvements in or relating to spring driving mechanism for gramophones and similar instruments
IPC: G11B17/00
Filed: 1923-11-02
Abstract: 214,193. Lindstr÷m Akt.-Ges., C. April 14, 1923, [Convention date]. Spring power-storing mechanism. - To enable similar spring motors to be used for driving gramophones playing different numbers of tunes before rewinding becomes necessary, the transmission gear between the spring barrel wheel and the record table is chosen so as to have a suitable intermediate ratio of transmission, and the variation in length of run is obtained by inserting differently-sized spring barrels containing springs of different lengths or strengths. The spring barrels l, Figs. 3 and 4, intended for alternate use may be secured to driving-wheels of the same size, or the driving-wheels g, k may be of different sizes, the bearings for the shaft f being adjustable.
Patent GB-770782-A (GB)
Title: Abrading tools
IPC: B24D15/02
Filed: 1954-09-24
Abstract: 770,782. Files; rasps. LENG,-A. S. Aug. 19, 1955 [Sept. 24,1954], No. 27621/54. Class 61 A file or rasp comprises a block of wood 7 having a flat face 7a across which extends a longitudinally bowed strip consisting of a plurality of peripherally toothed resilient wires 8b transversely bent to sinuous form. The ends of the wires are secured, as bysoldering or welding, to transverse rods 8c..In a modification Fig. 3, the strip is held positively in the bowed state by a wire 9 having hook shaped ends 9a the wire being located in a slot 7c in the in the underface of the handle. The hooks engage the ends of the strip when the latter is sprung into position. In another modification wherein the degree of bowing imparted to the strip can be varied, one end of a wire located in the slot 7c is hooked the other end being screw threaded to recieve a nut, a clamping piece being provided between the nut and handle 1.
Patent GB-483280-A (GB)
Title: Improvements in or relating to a sealing device for rotating shafts
IPC: F16J15/34
Filed: 1936-10-12
Abstract: 483,280. Stuffing - box substitutes. GILMAN, G. P. Oct. 12, 1936, No. 27668. Convention date, March 27. [Class 122 (v)] In a shaft-packing comprising a member 17 pressed resiliently into contact with a cooperating member 24, one member is of softer material than the other and is formed with sharp ridges, provided for example between concentric or spiral grooves, adapted initially to wear rapidly to form a series of sealing surfaces. The member 17 may be carried by a resilient diaphragm 35 which presses it into contact with a shoulder on the shaft. Alternatively one or two cup shaped elements 17, Fig. 6, containing packing 49, e.g. of rubber or felt, and rotating with the shaft may be pressed into contact with an insert or inserts 55, 57 in the casing by a spring 45 acting through cover rings. In a further form the spring 45 acts on the base of a cup shaped member carrying packing and a cover ring adapted to bear on the insert in the casing.
Patent GB-535585-A (GB)
Title: Improvements in or relating to the manufacture of chlorobutene
IPC: C07C17/25
Filed: 1939-10-12
Abstract: 535,585. 2-Chlorobutene-2. DU PONT DE NEMOURS & CO., E.I. Oct. 12, 1939, No. 27738. Convention date, Oct. 12, 1938. [Class 2 (iii)] 2-Chlorobutene-2 is made by heating 2:3- dichlorobutane to 200‹ to 300‹ C. in the presence of an alkaline earth metal halide, e.g., barium chloride, which may be supported on activated charcoal, silica gel, alumina gel, chips of porous ceramic materials or other supports. In an example activated charcoal impregnated with barium chloride is used as the catalyst. The product is substantially free from other monochlorbutenes, but contains small quantities of butadiene.
Patent GB-1269442-A (GB)
Title: Improved signature or sheet collating apparatus
IPC: B65H7/02
Filed: 1970-06-09
Abstract: 1,269,442. Delivering sheets. J. W. CLEMENT CO. 9 June, 1970 [25 June, 1969], No. 27789/70. Heading B8R [Also in Division F1] A signature collating machine comprises a plurality of units, in each of which signatures 12, Fig. 1, are fed from a magazine 14 in succession by a feeder 10 to a collating conveyer 16 on which signatures are collected into books. When a signature of normal thickness passes an eccentrically mounted sensing arm 20 of a fluidic calliper 1, the arm is swung from a rest position 20a to an intermediate position. If no signature is fed, the arm remains at 20a, while if the signature is too thick, it moves to position 20b. If the signature is too thin, the arm remains near to its rest position. Positions 20a, 20b thus correspond to a malfunction, while all three positions are variable within a limited range according to the actual thickness of the signature within or outside of the required range. The calliper controls a diaphragm operator 48 which controls an electric switch 50. The switch 50, if closed during that part of the revolution of the feeder when a signature is passing the arm 20, at which time a microswitch in series with the switch 50 is also closed by a cam, passes a signal to a monitoring device 74 having a register. Signals from each unit are passed to a single monitoring device, which acts after the necessary delay to reject a faulty signature when it arrives at a diverting device. The machine may be stopped on receipt of a malfunction signal by the device 74, or alternatively the machine is stopped only when a predetermined number of such signals are received from any one unit. The fluidic calliper, Fig. 3, is accommodated in a housing 32 having a recess 36 in which is movable the arm 20 carrying blades 28a, 28b which are pivotally adjustable according to the allowable range of signature thickness. The left half of the calliper comprises a flip-flop 40a having a fluid inlet 42a and two outlets 46a, 46a<SP>1</SP>, the former leading to atmosphere and the latter to the diaphragm operator 48. Fluid from a supply 38 passes to the flip-flop and also by paths 52a, 56a to ports 54a, 58a connected to atmosphere. When the arm 20 is in its position 20a, Fig. 1, the ports 54a, 58a are blocked by the blade 28a, and fluid pressure built up in the path 56a is applied to a control inlet 44a of the flip-flop, switching the fluid flow, which is normally directed to outlet 46a, to outlet 46a<SP>1</SP>. The right half of the calliper is similarly constructed, the ports 54b 58b thereof being closed by the blade 28b, and the outlet 46b<SP>1</SP> being connected to the same diaphragm operator 48.
Patent GB-1267706-A (GB)
Title: Servomotor control system
IPC: H02H7/085
Filed: 1969-06-02
Abstract: 1,267,706. Servocontrol systems. WESTINGHOUSE ELECTRIC CORP. June 2, 1969 [June 27, 1968], No.27796/69. Heading G1N. In a servomotor control system, the temperature of the windings 12, 16 of the servomotor 10 is sensed and the response, e.g. the gain and/or bandwidth, of the servo loop is reduced as the temperature of the windings increases, e.g. due to overloading, so as to prevent further heating of the windings. As shown a signal representing the actual motor rotor position is compared at 24 with a signal representing the desired rotor position and the error signal is applied to the servomotor to move the rotor to the desired position. The error signal is applied via an operational amplifier 32 having an input resistance 40 in close proximity to the windings, the resistance 40 increasing with temperature thereby to reduce the gain of the operational amplifier. Alternatively, Fig.2 (not shown), the operational amplifier may be replaced by an R-C filter, the resistance 40 forming part of the filter, thereby reducing the bandwith of the loop. Combinations of the two described systems or any desired curve shaper (e.g. by adding the integral function to the error signal) may be used between the resistance and the servomotor. The resistance 40 may be replaced by a thermistor.
Patent GB-734742-A (GB)
Title: Improvements in or relating to automatic speed control systems for direct current electric motors
Inventor: ROBERTSON ALEXANDER LIDDELL
IPC: H02P7/26
Filed: 1953-10-09
Abstract: 734,742. Automatic speed control systems. OZALID CO., Ltd. Oct. 9, 1953, No. 27892/53. Class 38 (4). [Also in Group XXXVII] The invention relates to an electric motor speed control system of the kind in which the armature is supplied from an A.C. source through a grid-controlled rectifier; the control potential being A.C. superimposed on a variable D.C. and obtained from a rectifier and a control valve responsive to the difference between a reference voltage and the motor B.E.M.F. According to the invention the rectifier and control valve are connected in series across an A.C. source whereby they both conduct on the same half-cycles to charge two condensers connected in separate phase-shift circuits across the valve and rectifier respectively and one of the condensers provides the control potential for the grid-controlled-rectifier. As shown, the motor armature 10 is supplied through a grid-controlled rectifier 12 and the motor field 19 from a conventional biphase rectifier 20, which also provides the speed reference voltage across potentiometer 55. The error signal comprising the difference between the motor B.E.M.F. from potentiometer 59 and the reference voltage from potentiometer 55 is applied to the control valve 44, which is combined in the same envelope as the rectifier diode 45, and is A.C. energized from a transformer winding 60 in the opposite phase-sense to the grid-controlled-rectifier 12 so that the valve 44 only conducts when the rectifier 12 is non- conducting, whereby the error signal is independent of the armature current. Identical phase-shifting circuits 41, 42 and 49, 50 are connected across the control valve (i.e. in series across the A.C. supply from winding 60) and the capacitative reactances are small compared with the resistance so that the A.C. voltage across the condensers is approximately in quadrature with the supply. Further the condensers 41, 50 are charged through the control valve 44 and the diode 45 respectively, the relative D.C. potentials depending on the error signal. The resultant potential across the condenser 41 is applied to the control grid of the rectifier 12. Starting arrangements with a delay to allow the rectifier to warm up are described (see Group XXXVII)
Patent GB-676963-A (GB)
Title: Improvements in and relating to thermopile construction
IPC: G01J5/12
Filed: 1948-10-27
Abstract: 676,963. Thermo-electric batteries. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 27, 1948 [Oct. 29, 1947], No. 27912/48. Class 53. A thermopile comprises a helix wound on an insulating support, one part of each turn consisting of different metal from the rest of the turn. The thermopile is made by winding a masking strip helically round a cylindrical or other support and leaving a space between adjacent turns and then depositing two different metals in the helical space. Fig. 2 shows a method of making a pile in which a wire or thread of quartz or silk or other masking strip 1 is wound helically round a glass rod 2 with a space between adjacent turns so that a continuous helix of the surface of the rod 2 remains exposed. A mask 4 is temporarily arranged to cover one half of the rod and a metal, for example bismuth, is evaporated in a vacuum and deposited as a film on the exposed half of the rod. The mask 4 is then moved to cover the coated half of the rod and the other half is then coated in a similar manner with antimony. The metals on the two halves overlap at their ends to form two series of junctions which may be blacked. Masks 1 and 4 are then removed and the ends of the support 2 fitted with metal caps to form terminals and supports for mounting the pile. In order to increase the sensitivity of the pile the support 2 may be formed with a longitudinal groove 9 beneath one set of junctions, as shown in Fig. 6, an insulating sheet being first wound round the support and covering the groove. A reflecting surface of silver may be applied to the surface of the groove. Cold liquid may be circulated through a passage 12 formed in the support near the opposite set of junctions. In a modification the hot and cold junctions are situated in two parallel lines over the groove 9. Fig. 8 shows a further modification in which a tubular support 15 carries two arms 16 which are connected at their free ends by a quartz thread. A sheet of insulating material is wound round the thread and support 15 and carries the thermo-electric metals, the hot and cold junctions being situated at 6a and 6b respectively. In another modification, the carrier is in the form of a thin glass plate. A number of such plates may be placed side-by-side so that the hot junctions cover a large area. The other ends of the conductors which normally form the cold junctions may be left unconnected to produce an electrical image of a thermal image focused on the hot junctions. Any of the forms of thermopile described may be mounted in an evacuated container having a heat-transparent window opposite the hot junctions.
Patent GB-681516-A (GB)
Title: A method and device for centrifugal separation of crude latex with or without a stabiliser
IPC: C08C1/10
Filed: 1950-11-15
Abstract: 681,516. Centrifugal separators. AKTIEBOLAGET SEPARATOR. Nov. 15, 1950 [Nov. 15, 1949], No. 27935/50. Class 23 [Also in Group V] Apparatus of the type shown, for separating crude latex, with or without the addition of a stabilizing agent, into a cream comprizing a concentrate of rubber particles, and a skin comprizing proteins, yellow pigments and a small proportion of rubber, is characterized by regulating the latex flow to obtain a ratio less than 64<SP>2</SP>: 316<SP>3</SP> for the square of the diameter d of the free cream level to the cube of the outside diameter D of the discs 14. The free cream level diameter is preferably only a little greater than that of the passage 6. The skim flows up channels 17 to outlet nozzles 18, and the cream from a chamber 19 to outlets 20 by way of an annulus 22 the size of which may be varied under pressure. Crude latex flows from a tank 2 into the passage leading to channels 9 and holes 10 in a part 7. Between a hood 12 and a set of discs 15, channels 17 are formed. The diameter of the passage 6 is kept small to reduce the centrifugal effect on the latex and consequent separation before it reaches the channels 9. By speeding up the latex through the passage 6, the formation of lumps is prevented. A nozzle 3 may lead the latex tangentially so that it flows in the direction of rotation of the wall 5 of the passage 6. The Specification states that the width of the passage 6 may have a diameter in millimetres which, multiplied by the number of revolutions per minute, gives a figure which is less than 40 times 6800.
Patent GB-395329-A (GB)
Title: Hectograph machines
IPC: B41L9/04
Filed: 1931-10-08
Abstract: In hectograph-copying apparatus comprising a gelatine band 42 passing over a bed 25, moisture is applied to the rear side of the band prior to winding it on to a spindle 41, by a roller 60 made of rust-proof material covered with rubber.  The roller 60 dips in a <PICT:0395329/III/1> water pan 57 mounted in a cradle 58, which is supported by pivoted arms 59 and is movable by means of an eccentric 62 and rod 61; the eccentric is moved by hand into the two dead centre positions, whereby inadvertent movement of the cradle is avoided.  The water in the pan 57 is maintained at a constant level by means of a sponge cup 70 comprising a perforated false bottom 71 and overflow holes 73.  A supply pipe 68 on the cup 70 passes through the upright 26 and is secured thereto by nuts 69 adapted to allow the pipe to swivel when it is necessary to adjust the cup to allow the machine to be worked in a tilted condition.  In these circumstances, the pan may be levelled up by replacing the rear arms 59 by longer arms, or they may have spaced holes to allow the adjustment.  A flexible tube 67 connects <PICT:0395329/III/2> the pipe 68 to the pan.