baber/WOPTO huggingface dataset:
Patent GB-298081-A (GB)
Title: Improvements in and relating to systems for governing prime movers
IPC: F01D17/24
Filed: 1928-10-01
Abstract: 298,081. British Thomson-Houston Co., Ltd., (Assignees of Nerad, A. J.). Oct. 1, 1927, [Convention date]. Electric governors; transmitting-mechanism; fluid-relays. - In governing means for a fluidpressure motor, the current produced by a pilot generator driven thereby varies with the speed, and through an electromagnetic relay and other electric and fluid-pressure transmission mechanism controls the motor supply. The movement of the control element varies the change in the current produced by the pilot generator, and also the current in a supplementary coil also controlling the magnetic relay so as to prevent hunting. A turbine 5 is controlled by valve mechanism operated by an hydraulic servomotor 7. An upward movement of the pilot valve 9 closes the admission and a downward movement opens it. The field winding 13 of the pilot generator 11 is connected to mains of constant voltage 14. A series-control circuit 17 from the generator 11 operates a relay 18, and contains a controlling- rheostat 19, a variable resistance 20 operated by the piston-rod of the hydraulic relay, and a third shunt rheostat 20<a>. The relay 21 operates a lever 22 provided with contacts 24, 25 controlling currents through contactors 29, 30. The pilotvalve rod 9 is connected to a lever 33 which is engaged by a lever 34. These levers are moved against the resistance of a spring 39 by electromagnets 31, 32, controlled by the contactors 29, 30. The movement of lever 33 operated by the electromagnet 31 is stopped when the pilot valve has been moved through the neutral position shown to the down position. Lever 34 is stopped as shown with the valve in the central position. The magnets 31, 32 are energized from the common supply mains 14, being earthed on the one side and connected on the other through the contactors 29, 30, and leads 37, 16, with the mains. The contactor coils are de-energized by short-circuiting them through leads 42, 43 by means of the contacts on lever 22. The two contacts provide three positions for the control valve. Magnets 31, 32 are de-energized for the exhaust or up position; magnet 32 is energized for the middle position; magnets 31, 32 are energized for the admission or down position. The follow-up rheostat 20 prevents over-travel of the admission valve. For each position of the valve there is a different resistance and a definite speed. The relay 18 is provided with a supplementary winding 47 acting in a decreasing manner by change of current produced by shortcircuiting resistances 48, 49, 50. These resistances are controlled by contacts 46, 46<a> operated by the levers 33, 34. The resistances 48, 49 are thrown out respectively by closing one contact 46<a>, and then both contacts. An increase or decrease of speed causes a decrease or increase in the current flow in winding 47 compensating for the change in the current flow in the wilding 18.
Patent GB-336072-A (GB)
Title: Improvements in or relating to pistons
IPC: F16J9/22
Filed: 1929-09-17
Abstract: 336,072. Day, C. Sept. 17, 1929. Piston packing.-Piston-ring grooves are provided with renewable wearing surfaces consisting of thin rings 4 of hardened or tempered steel or other wear-resisting metal which rings embrace and grip the bottom of the grooves. The rings may consist of bent strips of steel or pieces of cut or stamped sheet steel. The rings may be in halves. A stop plate 11 is arranged between the ends of the packing-ring 9, Fig. 3, and extends into the splits of the rings 10. The plate 11 is provided with a flange 12 which engages recesses in the rings 9, 10, and is thereby retained in radial position. The flange may engage only one of the thin rings. The rings 4, 10 may be provided at one side only of the grooves.
Patent GB-1399717-A (GB)
Title: Apparatus for supervising the breathing of a subject
IPC: A61B5/08
Filed: 1972-06-15
Abstract: 1399717 Apparatus for monitoring and stimulating breathing SIEMENS AG 15 June 1972 [16 June 1971] 28174/72 Headings ASK and A5R Apparatus for supervising the breathing of a patient by means of electrodes 2, 3, comprises a supply-current generator 4 for supplying current to the electrode 3, a high frequency amplifier 5, a detection device 6-8 connected to the amplifier 5 and providing an output signal in dependence upon the patient's breathing, and a stimulating current generator 11 for supplying a pulse to the electrode 3. The detection device comprises a rectifier 6, a demodulation low-pass device 7, and a lowfrequency amplifier 8. A switch 13 is arranged to short-circuit the amplifier 5 in step with synchronising pulses of a pulse generator 12. The output from the detection device is connected to a measuring device 9 and an indicator 10, and to a monitoring device 16 arranged to supply a stimulation control signal if a respiratory interruption occurs. The control signal from the monitoring device and the pulses from the generator 12 pass to the inputs of an AND gate 15 which provides an output pulse to a counter 14 when the two input pulses co-incide. The output from the counter 14 is a triggering pulse to operate the stimulating current generator 11. A transistor switch 20 and a monostable flip-flop 21 prevent the monitoring device from responding to interference signals. A Schmitt trigger 22 generates a signal to the monitoring device if, for instance, an electrode becomes loosened. A further counter 19 can limit the number of pulses supplied by the generator 11 in any given sequence. A manually actualble arrangement may replace the monitoring device. The frequency of the synchronising pulses may be 50 Hz, each pulse having a duration of 10 m.sec. Adjusting devices 17, 18 associated with the monitoring device and the counter 14 respectively are used to adjust respectively the period of time which elapses between respiratory interruption and the emission of a signal to the AND gate, and the "interval for expectancy of success" i.e. the period after which a further stimulation pulse is emitted if respiration is not restored. A lamp 23 and an acoustic device 25 are used as alarms.
Patent GB-773852-A (GB)
Title: Improvements in electromagnetic relays
IPC: H01H50/04
Filed: 1955-10-04
Abstract: 773,852. Electromagnetic relays. WESTINGHOUSE AIR BRAKE CO. Oct. 4, 1955 [Oct. 4, 1954], No. 28224/55. Class 38(5)  A relay comprises a non-magnetic metal integral L- shaped frame 1, the horizontal arm 36 rarrying L-shaped pole pieces 3, 4 spaced apart at 66 and having the tops 37 of their. vertical limbs bridged by a core 5 surrounded by the operating coil 2. The vertical frame arm 35 carries, by means of a support block 8,  an armature 6, and by means of an insulating block 16, contact springs 43, 44. The block 16 is secured by bolts 71 within an opening 33, the rearwardly-extending connecting lugs 43, 54, 67 permitting plug-in engagement of the relay with a base 23 to which it is automatically locked by a spring-loaded latch 24 releasable from a catch 25, by depression of a button on a rod 29. The armature 6 is hinged on the block 8 by a central vertical spring 7 and two horizontal side springs 7, the springs ends being fixed to the block by screws 8a, 8b and to the armature by screws 6a, 6b. To permit adjustment of the air-gap between the armature and pole pieces 3, 4 the block 8 is fixed by screws 9 passing through enlarged holes 76 in the arm 35. The armature is magnetically latched in its released position by engaging a pole piece 10 secured to the pole piece 4 by a permanent magnet 11, and it is only attracted when the winding 2 is energized with a certain polarity. The moving contact springs 44 comprise pairs of leaf springs connected to the lugs 54 and having bowed portions carrying contacts 55 co-operating with contacts 14 on the fixed springs 43. Grooves 13 in the springs 44 are spring- retained against pairs of horizontal pins 52, 70 on a pair of insulating U-section members 49 movable by the armature to operate the contacts. The members 49 are supported by the upturned ends 68 of a U- shaped wire 48 located in a groove 19 in a block 47 attached to the armature, springs 20 acting between the upper ends of the members 49 and the underside of the block. A transparent cover 17 encloses the contacts, a resilient gasket 58 providing a weathertight seal.
Patent GB-426497-A (GB)
Title: Improvements in or relating to containers for metal clad vapour electric arc converters
IPC: H01J13/26
Filed: 1933-10-13
Abstract: 426,497. Arc converters. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and GALLIZIA, E., c/o General Electric Co., Witton, Birmingham. Oct. 13, 1933, No. 28369. [Class 39 (i)] Relative movement between the top plate and the side of the container is obtained by the provision of webs which extend in the direction of the axis of the top plate or by the provision of grooves in the plate near the edge thereof. The top plate 1 is provided with openings 2 for the anodes, a condensing chamber 3 and V-shaped steel members 7 formed as a pressing with the plate or welded thereto. The plate is clamped to a flange 4 through an extension 6 of the web 7 and a packing groove in the flange. The members 7 may alternatively extend within the container and the plate may be supported by an annular flange or arms on the inner side of the side wall. In another form, the members 7 are replaced by grooves which are narrowly spaced apart, have a depth equal to two thirds the thickness of the plate and are machined in the plate on both sides thereof. The plate may be provided with strengthening ribs and may consist of a disc, an internal condensing chamber being provided. The anode seals may consist of metal rings of frusto-conical shape united by fused vitreous material. The tank is water cooled, but the plate is not provided with cooling means. The Provisional Specification describes also the provision of grooves in the tank at the top thereof.
Patent GB-942791-A (GB)
Title: Improvements in textile spinning and twisting machines
IPC: D01H13/14
Filed: 1958-09-04
Abstract: 942,791. Spinning. ELECTRONICS (BRADFORD) Ltd., N. A. D. WALKER, and G. C. L. CAMPBELL. Dec. 3, 1959 [Sept. 4, 1958], No. 28381/58. Headings DID and D1F. In the detection and electrical indication of the presence or absence of an end of yarn on a spinning or twisting machine (and, if required, the operation of a stop-motion in response thereto) a feeler device, sensitive either to continuous pressure caused by its contact with successive yarn ends or to continuous vibration caused by intermittent contact with it of the ballooning yarn, is continuously traversed between the ends of the machine and close to the paths of the yarns. The feeler may extend lengthwise of the machine over a distance slightly greater than that between adjacent spindles. As shown, yarn t is delivered by rollers 1,2, through guide 3 to be wound by a ring 4 on to a spindle 5. A trolley or carriage 10 is moved, as by means of a cord or wire driven by a reversible motor (not shown) so that detector mechanism such as a transducer 7 with a spring-biased feeler 8 which normally rests lightly on successive yarns, traverses the machine. Movement of feeler 8 from normal position actuates a switch, or relay controlling a mechanical clutch, to stop the machine and give an alarm signal. In another embodiment the vibrations are normally transmitted to the diaphragm of a microphone (carried on trolley 10) the output of which is applied to an electro-magnetic relay: when a yarn breaks, the output fails and the relay is released to operate a warning and/ or selective indicating device and arrest the motion of the trolley or close a clamp to break the sliver entering the rollers 1,2. The detector may be suppressed during doffing and for a short period thereafter to prevent false indications. If a fault occurs in the detector circuits or the trolley wire breaks, a time delay (which is adjusted to a slightly longer period than the time taken for the trolley traverse) and a switch operated by the trolley ensure that the detector device is switched off and that such action is signalled.
Patent GB-1332626-A (GB)
Title: Belt sander
IPC: B24B21/06
Filed: 1972-06-20
Abstract: 1332626 Grinding PAUL ERNST MASCHINENFABRIK 20 June 1972 [22 July 1971] 28801/72 Heading B3D A belt sander for polishing or grinding a workpiece 14; Fig. 1a comprises an endless polishing or grinding belt 1 entrained about pulleys 2, 3, means 15 for moving a workpiece under the belt for working contact over the entire width of the workpiece, and magnetic means 10, 12, Fig. 2, for moving the belt against the workpiece. The belt 1 runs over a guiding pulley 4 and a band 12 of non-magnetic material entrained about the pulleys 2, 3, the band carrying a plurality of magnets of one polarity. A plurality of carriers 9 each having a magnet 10 of the same polarity, are mounted on the rods 11 of pneumatic piston-and-cylinder devices 7 secured to a bar 6. The workpiece 14 is conveyed by a belt 15 beneath the grinding belt 1 in a direction transverse to the direction of the belt 1. Each device- 7 is associated with a respective switch 20 which is actuated by the leading edge of the workpiece, and after a suitable time delay, actuates its device to lower its carrier 9 and press the grinding belt against the workpiece. The magnets, being of the same polarity, repel each other so that the carriers 9 are normally removed from contact with the band 12. In a similar embodiment, the workpiece is moved in the same direction as the grinding belt the carriers being arranged across the width of the belt. In another embodiment, the grinding belt 21, Fig. 5, runs over a steel band 24 and a plurality of solenoids 28 are disposed beneath the upper run of a belt conveyer 26. Each solenoid is actuated by a respeetive switch 30 operated by the workpiece 20 so as to urge the steel band, and hence the grinding belt, against the workpiece. In a similar embodiment, permanent magnets are mounted beneath the upper run of the conveyer belt on the rods of piston-and-cylinder devices actuatedby switches operated by the workpiece to raise the magnets so as to attract the steel band and draw it and the grinding belt against the workpiece.
Patent GB-880931-A (GB)
Title: Polymers of low pressure olefines and process for stabilizing them
IPC: C08K5/13
Filed: 1958-09-08
Abstract: Low pressure polymers produced from olefins containing tertiary carbon atoms are stabilized by incorporation therein of a condensation product of nonyl-phenol with a carbonyl-containing organic compound.  Specified polymers are polypropylene, polybutene, and propylene-ethylene copolymers.  The condensation product may be prepared by the trimerization of propylene and using the trimer to produce an industrial product consisting mainly of paranonyl phenol, which is then condensed with the carbonyl-containing compound by the use of a mineral acid, e.g. 35% hydrochloric, or 10 to 70% sulphuric acid, or by saturating the organic phase with hydrochloric acid gas. Specified carbonyl-containing compounds are formaldehyde, acetaldehyde, benzaldehyde, acetone (preferred), methyl ethyl ketone and cyclohexanone.  The stabilizer may be added to a small amount of the polymer as a concentrated solution of about 60%, in acetone or methylene chloride, and this, after evaporation of the solvent, blended with the polymer.  The stabilizer may be added during the preparation of the polymer or during its working up.  Known anti-agers and processing auxiliaries may also be present, examples being 2:6-di-t-butyl-p-cresol and nonyl-beta-naphthol-bis-(41-hydroxy-2-methyl-5-t-butyl -phenyl) - sulphide, N-alkyl or N:N1-dialkyl derivatives of p-phenylene diamines bis-(2:4:6-trihydroxy phenyl)-sulphide, bis-(hydroxy-nonyl-naphthyl)-sulphide, bis-(hydroxymethyl-sec-propyl-phenyl)-sulphide and dithio-phenol-2-carbocylic acid.  Specifications 779,823, 799,392, 801,031, 819,867 and 828,791 are referred to. p
Patent GB-442789-A (GB)
Title: Improvements in automatic gripping devices for suspending sheets of material
IPC: C14B1/26
Filed: 1934-10-09
Abstract: 442,789. Clips and clamps. WHITE, J., 110, Portland Road, Hucknall, and HATTON, J., 75, Main Street, Newthorpe, both in Nottinghamshire. Oct. 9, 1934, No. 28837. [Class 44] A gripping device, particularly for supporting sheets of material, hides, &c. during treatment or drying, comprises a pair of crossed members A, B pivoted together at C, one end of member A being pivoted to a support D at E, and one end of member B being slidably connected to support D by stud F and slot B<2> to allow rising and falling movements which respectively open and close the free ends of members A, B. These ends co-operate to effect grip on the material and may be provided with jaw members A<1>, B<1> of suitable width and of serrated or curved form, or provided with rubber pads. Members A, B may be stamped out of sheet metal.
Patent GB-288620-A (GB)
IPC: C06F1/20
Abstract: 288,620. Rakowitzky, S., and Rakowitzky, H., (trading as Rakowitzky, Geb., S. & H.). April 15, 1927, [Convention date]. Machines using continuous wire. - In the manufacture of match packets having cover portions held together by a bent staple, the match bands are passed to wire stapling apparatus which includes a carriage 284 moving between guide bars on a table 281 and having plates 285, 286 for bending the wire drawn off a spool and fed through a tube 358 to a stop 360. A sliding rod 296 carrying a die 297 is accommodated in the carriage 284. Levers 310, 315 are pivoted to a stand 304 on the table 281, and are caused to swing by means of rollers 308, 309 carried on a stand 307 moving with the carriage 284 against the action of a helical spring 313 and a flat spring 317 respectively. The free end of the lever 315 engages a lug 319 of a sliding tongue 320. At the forward motion of the carriage 284 its knife 361 severs the wire 322 and the plates 285, 286 and die 297 move forward, bending the wire round the tongue 320 which then rises allowing the formed staple to be driven into the packet band. A pressure foot 311 and the lever 310 press on the staple and band at this stage to prevent bending. The bending plates followed by the die are then returned to their initial position, and on the lever 310 rising the band is free to advance beneath a plate 356 and a die 352 for producing a slight fold in the band and wire firmly to fix the staple limbs. The other end of the staple is bent upwards by a lever 363. The band is now fed forward by combs to cutting and folding mechanism comprising two wings of a table on to which a section of the band is delivered, severed from the band by a descending knife and caused to fold about its middle by the closure of the wings, whilst a hooked bending lever is brought over their upper ends to bend the projecting portion of the staple downwards so as to hold the portions of the cover together.
Patent GB-1019035-A (GB)
Title: Improvements relating to the treatment of suspensions of finely-divided solids in liquids
Inventor: EVESON GEOFFREY FRANK
IPC: C09K23/00
Filed: 1963-07-22
Abstract: A suspension of a finely-divided solid in a liquid is flocculated by addition of an electrolyte and a polyelectrolyte, the liquid containing the flocs is subjected to a settling step, the settled flocs are separated from the liquid in a manner to compact the flocs together, and the compacted flocs are centrifuged.  Apparatus for carrying out the process may comprise a vessel with stirrer for receiving suspension and (aqueous) reagents, a conical settling tank for receiving conditioned suspension, a densifier to receive settled solids, and a basket centrifuge to receive solids from the densifier. The densifier may be omitted; the settling tank may be omitted; two stirrer vessels may be used in series, electrolyte being added to the first and polyelectrolyte to the second; where a single stirrer vessel is used, the electrolyte may be added thereto, and the polyelectrolyte added during passage of the suspension from there to the settling tank.  The electrolyte may be:  calcium chloride, aluminium or magnesium sulphate, sodium hydroxide, or ammonium molybdate.  The polyelectrolyte may be a polymer of acrylic acid, acrylamine or acrylamide.  A cationic polyelectrolyte may be added to the suspension before or after an anionic polyelectrolyte. Suspensions of either bentonite or shale may be treated. ALSO:A suspension of a finely-divided solid in a liquid is flocculated by addition of an electrolyte and a polyelectrolyte, the liquid containing the flocs is subjected to a settling step, the settled flocs are separated from the liquid in a manner to compact the flocs together, and the compacted flocs are centrifuged.  Apparatus for carrying out the process may comprise a conditioning vessel 1, Fig. 1 (not shown), to receive the suspension, and the reagents (in the form of aqueous solutions), and having a stirrer 2, a conical settling tank 3 to receive the conditioned suspension, a spiral rake densifier 5 to receive the settled solids, and a horizontal basket centrifuge 6 to receive the solids from the densifier.  The densifier may be omitted, as in Fig. 3 (not shown).  Two stirred conditioning vessels may be used in series, electrolyte being added to first and polyelectrolyte to the second; alternatively, the electrolyte may be added to the stirred suspension in a single conditioning vessel and thereafter the polyelectrolyte may be added to the suspension during its passage from there to the settling tank, as in Fig. 3 (not shown).  As a further alternative the conical settling tank may be omitted and the settling carried out in the pool formed at the lower (entrance) end of the densifier. Bentonite suspension (in foundrysand reclamation), and shale suspension, or the tailings fraction resulting from the froth flotation of raw fine coal, may be treated.
Patent GB-1155967-A (GB)
Title: Improvements in or relating to Vehicle Suspension Systems.
Inventor: WEISS KARL RUDOLF
IPC: B60G1/00
Filed: 1965-07-08
Abstract: 1,155,967. Vehicle wheels; vehicle suspensions. DEFENCE, SECRETARY OF. 28 Sept., 1966 [8 July, 19651, No. 29014/65. Heading B7C. In order to reduce shocks during running, a hollow vehicle wheel 1 houses an expansible chamber in communication with a pneumatic tyre 7 and having a movable diaphragm 9 connected to a damper which damps diaphragm movement and to resilient means which resist expansion of the chamber. As shown in Fig. 1, the damper 14 is a fluid damper and the resilient means comprise a helical spring 15. In a modification (Fig. 2, not shown), the damper is secured to the outboard plate 3 and the expansible chamber is located on the opposite side of the diaphragm. In a further embodiment, at least two wheels are interconnected by thin fluid in their dampers and each wheel acts as an air spring for the other(s). In other examples, the resilient means comprise a rubber or plastics ring (Fig. 3, not shown) replacing rolling lobe 8, and an air spring (Fig. 6, not shown).