baber/WOPTO huggingface dataset:
Patent GB-350537-A (GB)
Title: Improvements in or relating to tape recording apparatus for electrical signalling systems
IPC: G08B25/14
Filed: 1930-03-12
Abstract: 350,537. Telegraph receivers. STANDARD TELEPHONES & CABLES, Ltd. and WEBB, L. H., Columbia House, Aldwych, London. March 12, 1930, No. 8032. [Class 40 (iii).] A tape recorder comprises electromechanical means to feed the tape a short distance in response to each signal impulse and a longer distance between trains of impulses. The armature of the punch magnet P is fixed to a shaft PMS, to the other end of which is fixed a bell-crank lever with one limb formed as a hammer H, which strikes a punch PU through a punch spacing lever PUS when the latter is inserted by a punch spacer magnet PS. When the punch magnet operates a pawl PA engages a tooth in a star feed wheel SFN, so that, when the armature retracts, the star wheel rotates to feed the tape T. An auxiliary punch is struck by each movement of the hammer H to pierce feed holes in the tape. A fast operating relay L relapses when a signalling break occurs in the continuous current normally in the line, and closes circuits for a relay PC and the punch spacer magnet PS. The relay PC closes, through interrupter springs I1 and contacts 2 of a relay CO in parallel, a circuit for the punch magnet P, which perforates the tape and simultaneously opens and closes contacts I1, I2 respectively to operate the relay CO, which locks over its contact 1 to ground at the contact of the relay L. Contacts 2 of the relay CO open the circuit of the punch magnet P, and contacts 3 open the circuit of the punch spacer magnet PS to withdraw the spacer lever PUS. If the relay L is re-operated at the end of the signal, the relays CO, PC relapse, but if the relay L remains back owing to a spacing signal, the relays CO, PC remain energized and the punch magnet vibrates through its interrupter springs I1 to step the tape. According to a modification the signals consist of current impulses, Fig. 4 (not shown).
Patent GB-330605-A (GB)
Title: Improvements in or relating to plug taps or cocks
IPC: F16K5/16
Filed: 1929-03-13
Abstract: 330,605. Moos, G. March 13, 1929. Wedging or jamming.-A plug cock adapted to be eased from its seat through the medium of co-operative wedge members has one wedge surface formed on the lower end e of the operating spindle f and the other on a spindle d unitary with the plug a. To limit the relative movement sleeves h, i, having interengaging notches and projections are secured to the two spindles. Modifications are described in which a reduced extension on the spindle f is formed with a single or double inclined surface adapted to engage corresponding surfaces formed on the bottom of a recess formed in the spindle d.
Patent GB-368992-A (GB)
Title: Improvements in electric welding machines
IPC: B23K11/00
Filed: 1931-03-17
Abstract: 368,992. Electric welding. SCHLATTER, H. A., 121, Seestrasse, Zollikon, near Zurich, Switzerland. March 17, 1931, No. 8198. [Class 83 (iv).] In a machine for electrically butt welding wires &c. of the kind in which the wires are secured in two vices which are relatively moved by an adjustable spring and operate the contactbreaker, a vice with a transversely slidable jaw is connected to a crosshead having a pair of parallel plungers sliding in cylinders in a casing to which a similar vice is secured, one of the plungers co-operating with the spring and the other with the contactbreaker. The movable and fixed vices 25,-27 -are respectively carried by a crosshead 10 and by a casing 4 provided with cylinders 5, 6, guiding insulated plungers 8, 9 secured to the crosshead. Each vice consists of a fixed jaw and a movable jaw mounted on a bolt 28 turned up from the end of a rectangular slide 29. Each movable jaw is closed by a spring 33 and is opened by an eccentric 31 on the end of a hand-operated shaft 34. The fixed jaws are provided with V-grooves 49 of different sizes and the adjacent ends of the pairs of jaws may be inclined in opposite directions so as to leave a V-shaped gap therebetween, the widest portion of the gap corresponding to the position of the deepest groove. The gripping faces of the jaws may be similarly bevelled. The plunger 9 is formed with a reduced extension 14 on which is mounted a spring 16 enclosed in an externally screwed axially movable non-rotatable sleeve 15 engaging a rotatable nut 18. The vices are separated by rotation of the nut, the wires 48 inserted and clamped in the vices with their ends abutting and the nut is then rotated back to initial position so compressing the spring. One end of the primary of a transformer is connected through a rheostat to the contactspring 40 and the other end to the contactspring 37. The primary circuit is closed directly or through a relay by the pushbutton 46. The spring 16 maintains contact between the wire ends, the crosshead moving up as the metal fuses. When the stud 13 on the plunger 8 engages the contact-spring 12 the circuit is broken. In a modification the vices may be separated by a screw 51 in the crosshead engaging an insulated thrust member 53 in the fixed member. This at the same time compresses the spring 16, the nut 18 being then employed for regulating the compression of the spring. The screw 51 is put out of action after clamping the wires. The centre portion of the nut is milled and the edges may be graduated so as to indicate the degree of compression of the spring and the extent of separation of the vices.
Patent GB-847104-A (GB)
Title: Improvements in or relating to smoke detection equipment
Inventor: PUCILL PETER MELBURN
IPC: G01N21/29
Filed: 1957-03-13
Abstract: 847,104. Smoke detectors. KIDDE CO. Ltd., W. March 4, 1958 [March 13, 1957], No. 8257/57. Class 97(3) A smoke detector for incorporation in an aircraft instrument panel has a casing with, at the front, a window for observing smoke in an air sample drawn through the casing and illuminated by an electric bulb located in the casing and held in a bulb holder which extends through and is engaged with the front end of the casing by means of a bayonet connection to permit removal of the bulb and bulb holder from the outside. In the form shown, the lamp 3 is contained in a lower compartment defined by a horizontal partition 2. A vertical longitudinal partition 5 forms two upper compartments visible through an inclined visor 9 and each provided with an air sample inlet 11, the samples passing through slits in the partition 2 to a common outlet, not shown. Light from the bulb passes through these slits. A shield 10 screens the visor 9 from light reflected from the inside of the casing. Each air inlet 11 has a light pivoted cover 15 which is lifted by the air flow to the position shown dotted, in the light beam, to act as a visible flow indicator. The bulb holder is secured to the front wall by a bayonet fixing and may be removed through the front wall by a fast-turn of the knob 6. Current is fed to the bulb through contacts 7 fed from a connector 16.
Patent GB-1029474-A (GB)
Title: Improvements in chromizing metal articles
IPC: C23C18/54
Filed: 1963-03-01
Abstract: An article having a melting point of at least 700 DEG C. and containing at least 50 mol per cent of at least one of the metals copper, silver, gold, molybdenum, tungsten, rhenium, iron, cobalt, nickel or the six platinum group metals is chromized by electrolysis as cathode at a cathode current density not exceeding 1 amp./sq.dm. with a chromium anode of a fused salt bath consisting of one or more alkali metal fluorides and 0.5 to 50 mol per cent total of one or more alkali metal chromous fluorides at a temperature of at least 700 DEG C. but below the melting point of the article and in an oxygen-free atmosphere e.g. vacuum or an inert gas.  Typically the bath is prepared under vacuum by completing a circuit between a metal cathode and a chromium in a melt consisting of 1600 gms of a ternary entectic formed on a mol per cent ratio basis of 45:45:10 of KF:LiF:NaF, to which is added 150 gms of potassium chromic fluoride. The self-exciting electrolytic reduction of the chromic fluoride to the chromous state is assisted by applying a small voltage to provide a potential across the bath of the order of 0.03 to 0.05 volt, the bath being held at a temperature in the range of 670 to 700 DEG C. and a current of around 0.5 A being passed for 1/2 hour.  The bath containing the chromous fluoride is then electrolyzed under an argon atmosphere with a steel strip article cathode and a chromium anode at 900 DEG C. with a small but increasing applied voltage after a short self-exciting treatment period to maintain current of 50 mA, providing a cathode current density of about 0.5 A/sq.dm, to give a total treatment period of about 5 hours, resulting in a chromized layer of 0.8 mil on both sides of the article.  Similar treatments with differing resulting thicknesses of chromized layer are described for nickel, platinum, and molybdenum strip, and reference is made to treating iron electroplated with nickel.
Patent GB-178679-A (GB)
Title: Improvements relating to blading for steam turbines
IPC: F01D9/02
Filed: 1921-03-17
Abstract: 178,679. Baumann, K., and Metropolitan - Vickers Electrical Co., Ltd.. March 17, 1921. Blades; nozzles.-Fins 11, 12, formed onstraight portions 10 of blades 8, Fig. 6, fit into saw-cuts in rings or segments 1, 2, Fig. 2. and are welded in position along the surfaces 13, 14; the curved ends of the blades being welded to the rings along their edges 15, 16. The rings 2, 1 have bolt-holes 3, 4 for attaching them to a diaphragm or to an inwardly-projecting rim on the turbine cylinder respectively. Some of the blades may be thickened at their inlet edges 18, Fig. 5, by one of the methods described in Specification 122,323, and the fins may then be continued straight across the blades. The edges of the sawcuts may be bevelled to receive the welding-metal, thus leaving a smooth surface after welding.
Patent GB-184524-A (GB)
Title: Improvements in electro-magnetic relays
IPC: H01H50/28
Filed: 1921-03-18
Abstract: 184,524. Barber, W. E. March 18, 1921. Relays.-The armature 12, Fig. IV, is mounted at the centre of a metal strip 5, which is held under tension between adjustable jaws 6, Fig. II. The pole-pieces of the magnets 14 act upon the broad lower end of the armature so as to swing the tip 13 between adjustable contact-points 19, 20 carried by arms 21, the torsion of the twisted strip acting to restore the armature to its normal position when the magnets are de-energized. Instead of a single strip 5, two or more tensioned wires or strips may be used. The magnets 14 may be adjusted relatively to the armature by means of a screw 17. Instead of using a pair of like poles, as shown in plan, Fig. II, unlike poles may be mounted to act on opposite sides of the armature. An initial bias or twist may be imparted to the strip 5 bv means of the jaws 6, so as normally to press the tip 13 against one or other of the contacts 19, 20; the action of the magnets 14 then neutralizes or reverses the applied twist.
Patent GB-541203-A (GB)
Title: Apparatus for testing valve springs of internal combustion engines and the like
IPC: G01N3/00
Filed: 1940-05-11
Abstract: 541,203. Testing springs. WEAVER, W. A., and WILLS, H. P. May 11, 1940, No. 8509. [Class 106 (ii)] A yieldable member is adapted to be placed in situ against the valve and pressure is applied to such member to move the valve against its spring the yield of said member or the pressure applied thereto being indicated. A bracket consisting of two side plates a secured at their upper ends by a rivet b is fitted to the lugs e of the valve rocker by a pin c. Inclined wings f on the plates a engage the lugs to hold the plates parallel to the valve stem axis. On the rivet b is pivoted an L-shaped lever g with a bifurcated end having cam-shaped extremities h. The other end is also bifurcated and notched at i to engage over pins j on a collar k rotatably supported on a screw m which passes through a collar n pivoted in the plates a. Also pivoted to the bracket below the collar n is a lever o the pointer arm p of which cooperates with a scale q on one plate a while the other arm is provided with a screw r adapted to engage the valve cap s. The lever o is fitted with a spring o<SP>1</SP>. In combination with this apparatus is a cylinder t containing a piston t<SP>1</SP> the stem of which projects through the cylinder and carries a sleeve t<SP>2</SP> to fit over the valve stem. On the upper end of the cylinder is a pressure gauge v and it is fitted with a return spring w. In use, the device t, t<SP>2</SP> is placed over the valve stem and the part h of lever g brought down thereon. While holding it with one hand the screw m is then turned until the trunnion can be engaged with the hook i and turned further until pressure can be brought on to this end of the lever g. Further turning of the screw g slightly moves the valve and a reading is obtained of the spring pressure available to hold the valve to its seating. The screw r is now turned to zeroize pointer p. Further turning of the screw depresses the valve and readings are taken of the compression of the spring indicated by pointer p and of gauge v. In a modification a quick impulse is given to the lever by cam means and the pressure sensitive device and the compression measuring device are located at a distance and work recording pointers.
Patent GB-351038-A (GB)
Title: Improvements in or relating to petrol gas generators
IPC: C10J1/12
Filed: 1930-03-17
Abstract: 351,038. Gas or vapour burners. OLCESE, A. V., 3, Via Altino, Milan, Italy. March 17, 1930, No. 8540. [Class 75 (i).] Burners or singeing devices in textile machines are supplied with petrol gas from generators comprising a carburetter E with spray nozzle G, a heated pipe coil B, and a group of blowers A, A<1>, which draw air through the carburetter, and, mixed with petrol, through the coil the mixture being homogenized in the blowers. A byepass I from the delivery pipe L supplies a burner F heating the coil.
Patent GB-725356-A (GB)
Title: Improvements in direct voltage stabilisation circuits
Inventor: POCOCK SYDNEY NORMAN
IPC: G05F1/52
Filed: 1953-03-27
Abstract: 725,356. Automatic voltage control systems. EDISON SWAN ELECTRIC CO., Ltd. March 27, 1953, No. 8547/53. Class 38 (4). The series connected valve of a series valvetype of D.C. voltage stabilizer is a tetrode and an auxiliary voltage source stabilized with respect to the cathode is applied to the screen grid so as to utilize the tetrode amplification of the valve. This auxiliary source Es, stabilized by a glow discharge device V3, in addition to supplying the screen grid of the series valve V1, also feeds via a resistor R, a corona discharge device V2 which provides the reference voltage for the control grid of valve V1. Thus the supply to tube V2 is made independent of fluctuations of the main input voltage Ei. Such fluctuations are compensated by connecting resistances R4, R5, between the negative pole of the auxiliary supply Es and the feed resistor R of the corona discharge device V2. Resistors R4, R5 are so proportioned that when the mains voltage Ei is at its nominal value, the potentials of points X and Y are approximately the same. If the mains voltage Ei drops, it is assumed that the auxiliary supply Es also drops, so that point X becomes positive with respect to point Y. A fraction of the voltage appearing at X is tapped off potentiometer R6, R7 and added to the signal on the control grid of valve V1.
Patent GB-421148-A (GB)
Title: Improvements in or relating to warning means for indicating deflation of pneumatic tyres
IPC: B60C23/00
Filed: 1934-03-19
Abstract: 421,148. Pneumatic tyres. SOC. ITALIANA PIRELLI, 21, Via Fabio Filzi, Milan, Italy. March 19, 1934, No. 8578. Convention date, March 18, 1933. [Classes 144 (i) and 144 (ii)] Wheels with multiple pneumatic tyres are provided with means for indicating deflation in any one of the tyres comprising a pressure-responsive device for each tyre operatively connected to a signaldevice. The air-chambers of the tyres on each wheel may be normally in communication, the pressure-responsive devices being adapted to close such communication on sudden drop of pressure in any one of the tyres. In the form shown in Fig. 1, the valve-stems 8, 9 of twin tyres 1, 2 are connected by valve-opening unions 6, 7 and pipes 10, 14-11, 15 to cylinders in a hub-extension 18. Spring-loaded pistons 19 in these cylinders are fitted with movable contacts 23, 24 adapted to co-operate with a fixed contact 25 in an electrical circuit which includes visible and audible signals 29, 30 and a masterswitch 28. The tyres are inflated through valves 12, 13 on the pipes 10, 11. In the modification shown in Fig. 2, the pressurechambers 40, 41 communicating with the tyres are fitted with flexible diaphragms 33 bearing against the heads 35 of spring-loaded plungers 34. The outer ends of the plungers 34 bear against pivoted contacts 47, 48 which, on fall of pressure in the tyre (or tyres), are moved by springs 50 to engage a central contact 49 to close the signalling-circuit. Fig. 5 shows a modification of the arrangement shown in Fig. 2, the pressures in the tyres being normally balanced by means of a branch-pipe 79 connecting the pressure-chambers 40, 41. In order to isolate a deflated tyre, the plungerheads 35 are fitted with valves 77, fall of pressure in any tyre resulting in the corresponding valve being forced on to its seat 78 to shut off the corresponding pressure-chamber from the pipe 79.
Patent GB-1045113-A (GB)
Title: Method of producing fire resisting wooden boards or panels
IPC: B27D1/04
Filed: 1965-03-01
Abstract: A method of producing fire-resisting wooden boards or panels consisting of shavings glued together comprises impregnating each shaving, after drying, with diammonium phosphate and gluing together under heat and pressure with an adhesive containing synthetic resin, kaolin and diammonium phosphate.  The shavings may be dried to a moisture content of 4% and placed in a vacuum tank.  An aqueous solution of diammonium phosphate, which may also contain polyethylene glycol and copper sulphate, is let into the tank to impregnate the shavings which are then dried again to a moisture content of between 6 and 10%.  Treatment temperature may be 70 DEG  to 150 DEG  C. and pressure may be 4 to 300 kg./cm.2. The synthetic resin in the adhesive may be urea formaldehyde with melamine powder, phenolformaldehyde with melamine powder, melamine formaldehyde, or epoxy resin.
Patent GB-750313-A (GB)
Title: Improvements in and relating to drying plant
IPC: E01C19/05
Filed: 1953-03-30
Abstract: 750,313. Drying apparatus. LEECH, L. A., and MILLARS' MACHINERY CO., Ltd. March 30, 1954 [March 30, 1953], No. 8676/53. Class 34(2). Drying apparatus for road making materials having a drum rotatable about a horizontal or slightly inclined axis, a feed chamber at the inlet end of the drum a discharge chamber 2 at the discharge end and a fan 20 for inducing a flow of drying gases through the drum has an expansion chamber 1 mounted above chamber 2 and connected to the interior of the drum to remove dust particles from the drying gases. the removed dust being returned to the processed material via a flap valve 5. Dust still airborne in the uptake 12 is extracted by a cyclone separator 19. In modifications two or more cyclone separators are coupled together. With drying apparatus working at high temperatures the expansion chamber may be applied to the feed end of the apparatus. The drum contains spiral baffle plates to assist in the initial retention of dust. Specifications 353,458 and 421,403, [Group XII], are referred to.
Patent GB-232763-A (GB)
Title: Batted or felted materials and methods of making the same
IPC: D04H1/645
Filed: 1924-04-07
Abstract: 232,763. Dicker, S. G. S., (Rubber Latex Research Corporation). April 7, 1924. Fabrics composed of fibrous materials agglutinated by adhesives.-A bat of smooth, non-felting fibres such as cotton, flax, jute, woody fibres, or asbestos is impregnated during or after manufacture with rubber latex under conditions precluding coagulation, and the product is dried and may be subsequently vulcanized with or without pressure. The latex, which may be diluted with water and may contain filling or vulcanizing agents, is preferably used in such quantity that the final product contains 1-5 per cent of latex solids. The latex preparation described in Specification 236,624 is particularly suitable for use. Thorough impregnation of the individual fibres of the bat may be effected by alternate reduction and increase of pressure during the treatment. The product may be either open-textured and resilient or compact and dense according to the pressure under which it is vulcanized.
Patent GB-803675-A (GB)
Title: Discharging compressed fluid containers
Inventor: RAYMAN RICHARD
IPC: A61M15/00
Filed: 1956-03-21
Abstract: 803,675. Discharging gas containers. SPARKLETS, Ltd. March 20, 1957 [March 21, 1956], No. 8823/56. Class 8(2). [Also in Group VI] Simultaneous or sequential piercing of the closure discs of two or more gas capsules R<SP>1</SP>, R<SP>2</SP>, Fig. 3 (not shown) held in cradles formed by front and rear portions 17, 18, Fig. 1, and a base plate 16 of a housing 10 having a butt 14 and a nozzle 11 connected to a receiver, e.g., an inflatable bag is effected by hollow needles 41, 42, Fig. 2, when the capsules are urged towards them by movement of a sliding thrust member 46 of the rear part 18 of the housing effected by pivotal movement of a lever 50 and yoke 52 about a pin 54. The capsule bases are located in recesses 46, 47 of the thrust member 46 and the necks fit into sleeves 30, 31 slidably mounted in bores 19, 20. For sequential puncturing of the capsules the needle points are positioned at varying distances from the neck-holding portions of the sleeves 30, 31.
Patent GB-300863-A (GB)
Title: Improvements in or relating to castors and their manufacture
IPC: B60B33/00
Filed: 1928-03-24
Abstract: 300,863. Headley, F. H. March 24, 1928. Castors. - A castor for furniture &c. comprises a normally upright tubular housing a closed at the top to form a coned, concave or other seating for a castor spindle b which is enlarged at the bottom b<1> to form a lateral bearing and which is formed with a groove b<3> in the upper part to accomodate a friction ring c bearing on the interior of the housing for retentive purposes. The ring c is formed with a rounded inner part to co-operate with the groove b<3> and a flat outer face. The castor is particularly adapted for use with a chair &c. leg comprising an outwardly splayed tube f. The Provisional Specification refers to a construction of housing in which the upper part, constituting a thrust bearing, is separate from the body part.
Patent GB-723032-A (GB)
Title: Improvements in and relating to electric limit switches
IPC: H01H29/14
Filed: 1952-04-08
Abstract: 723,032. Retractive switches. LONDEX, Ltd., and STERN, W. L. March 27, 1953 [April 8, 1952], No. 8951/52. Class 38 (5). A limit switch has a slidable actuating member 11 controlled by, e.g. a machine tool, and having a cam surface 16 engageable with an operating member 5 which is pivoted at 8 and carries two mercury switches 1, 2 which are thus operated by movement of member 11 which has a surface 17 to keep the switches operated even if it overshoots. The switches are supported by plates 3, 4 adjustably secured to the member 5 at 6 and 7. Push-button or other switches having an actuating member operable by the member 5 may replace the mercury switches.