baber/WOPTO huggingface dataset:
Patent GB-1397569-A (GB)
Title: Copying machine
IPC: G03G15/30
Filed: 1972-06-23
Abstract: 1397569 Delivering sheets RANK XEROX Ltd 23 June 1972 29640/72 Heading B8R A copying machine comprises means for delivering an original document from the exposure station 11 to a document tray 12 on to a rear exit slot 13 and means for delivering processed copy paper to a copy paper tray 19 or to a rear exit slot 20, the document path leading to exit 13 and the copy paper path leading to tray 19 intersecting one another there being means preventing the document and copy sheet from being routed along the intersecting paths. The paths taken by the document and copy paper are controlled by baffles 44 and 196 respectively. The preventing means may be a document exit selection switch which actuates the baffle 44 and a copy exit selection switch which actuates the baffle 196, the copy exit selection switch being operable to direct the copy to the tray 19 only if the document exit selection switch has been operated to select the document path leading to tray 12.
Patent GB-659066-A (GB)
Title: Improvements in or relating to electro-mechanical transducers
IPC: H04R3/00
Filed: 1947-11-06
Abstract: 659,066. Sound reproducing circuits. BOSWELL, I. I., and PLANER, F. E. Nov. 6, 1947, No. 29643. Drawings to Specification. [Class 40 (iv)] In a transducer arrangement in which two or more electro-acoustic transducers are employed concurrently and negative feed-back is provided around at least two of them, each transducer incorporating negative feed-back has a separate feed-back path. If the transducers each deal with a different frequency range the feed-back path of each is prevented from affecting other transducers.
Patent GB-1332252-A (GB)
Title: Boiling-water reactor plant
IPC: G21C15/243
Filed: 1971-06-24
Abstract: 1332252 Cooling reactors SULZER BROS Ltd 24 June 1971 [1 July 1970] 29662/71 Heading G6C In a boiling-water reactor, water circulating pumps are mounted on spigots which are secured to the pressure vessel. The shafts of the circulating pumps extend through the spigots to the water turbines which drive the pumps and which are external to the vessel. Each turbine casing has two feed water supply corrections, one for the supply of water driving the turbine and the other for the direct supply of feed water to the reactor. The reactor 2, below the water level 5, is cooled by the circulation of water from the pumps, 4, driven by the water turbines, 7, supported on the spigots, 6. The pump, 4, is driven by the turbine, 11, and water discharged from the rotor 14 of the turbine, mixes with the feed water supply in the annular chamber, 23, before flowing to the pump, 4, through the apertures, 20, of the diffuser blades, 18, and the bores 21. In further embodiments the reactor feed water is fed to the pump through the hollow turbine shaft and through cooling ducts in the pump blades.
Patent GB-647916-A (GB)
Title: Improvements in and relating to tooth brushes
IPC: A46B7/06
Filed: 1947-11-08
Abstract: 647,916. Tooth brush stocks. BRESSLER, L. R. Nov. 8, 1947, No. 29801. [Class 19] A tooth brush comprises, as an integral unit, a handle portion having a bristle-holding portion at the outer end thereof made from yieldable material and including a plurality of bristle-holding sections spaced apart longitudinally and connected together by one or more collars of reduced cross section and extending between adjacent bristle sections and between the innermost section and the handle, whereby said handle and sections are relatively yieldable, and a resilient and flexible member within the handle portion adjacent the bristle-holding sections and extending through said collars and bristle sections so as to be concealed thereby. In the Figs., the flexible member comprises a spring- like member 12 extending from the handle 2 through the sections 6 and connecting collars 8. The portions of the member 12 may be connected at their inner and outer ends as shown. The member 12 may be made from resilient or yieldable wire and is preformed so as to be mouldable in the tooth brush, the latter being moulded from plastic material which is somewhat yieldable or flexible when set. The member 12 is preferably curved longitudinally so that the brush sections are normally held as in Fig. 2. A single collar may be used between each pair of adjacent brush sections.
Patent GB-930664-A (GB)
Title: Improvements in or relating to apparatus for sensing a quantity of magnetic recording tape
Inventor: HALL PHILIP MERRICK
IPC: H04L13/06
Filed: 1958-09-18
Abstract: 930,664. Determining level of magnetic tape in a container. ELECTRIC & MUSICAL INDUSTRIES Ltd. Sept. 4, 1959 [Sept. 18, 1958], No. 29842/58. Class 37. [Also in Groups XXXV and XXXVIII] In a magnetic tape deck, the quantity of tape in a container is maintained constant by a system actuated by the changing capacitance between the front and back walls of the container, the front wall being electrically connected to the deck so as to minimise spurious capacitive effects such as " hand-capacitance." Fig. 1 shows a magnetic data storage deck in which specified magnetic tape 1 is drawn by capstan rollers 9, 10 from a spool 2, past a transducing head 11 to a spool 3. Containers 8, 13 provided as tape loop reservoirs, have their back walls 19 of insulating material, separating an electrode 20 from the rest of the earthed metal container 17, thus providing a capacitor, the value of which is dependent on the quantity of tape present. The electrodes 20, 17 of each container are connected in bridge circuits controlled by a transistor oscillator, the unbalance voltages being fed via phase-sensitive rectifiers and transistor amplifiers to relays 24, 25 which control the motors 4, 5 driving spools 2, 3. The direction of rotation is controlled by a circuit 16. Suction-type transport capstans 9, 12 are rotated by motors in opposite directions, hence the direction of tape transport depends on which of the capstans 9, 12 has suction applied to it. Capstans 7, 14 have suction applied continuously and are continuously rotated in directions so as to tend to feed tape into the respective containers 8, 13. When transporting from left to right, capstan 12 has suction applied, motor 5 being energized when the quantity of tape in container 13 is excessive, over-riding the effect of capstan 14. Motor 4 is energized when the quantity of tape in container 8 is insufficient, so as to allow capstan 7 to refill container 8. According to the Provisional Specification, the quantity of tape in an insulated container may be determined by the change in value of an inductor wound around the container. Bridge circuits.-Fig. 4 shows a bridge in which the capacitance 26 of a container is compared with that of a capacitor 27. The bridge is fed from a transistor oscillator 29, the unbalance voltage being amplified at 31 before being fed to a phase-sensitive rectifier 32 followed by an amplifier 34 feeding a relay R shown at 24 or 25 in Fig. 1. Specification 848,305 is referred to.
Patent GB-231553-A (GB)
Title: A portable musical instrument providing piano tone
IPC: G10C1/00
Filed: 1924-05-13
Abstract: 231,553. Massey, E. Maxted-. May 13, 1924. Double pianofortes; soundboards; vamping- apparatus; keys and keyboards; a c t i o n s; dampers; pedal actions; pedals; cases; framing; strings, arrangement of.-A portable pianoforte having two double soundboards is played from a keyboard at the top of the instrument and also has a series of chord strikers for playing an accompaniment. The soundboards comprise pairs of boards 10 and are placed on each side of a central frame member 2 over the top of which the strings are passed. The boards 10 are secured only at their lower ends so that each soundboard may vibrate in the manner of a tuning-fork. The soundboards are connected by a soundpost 15. The keys 17 are arranged in two rows are arrested after being struck, by contact with the bars 21. They act directly on the butts of the down-hanging hammers 20, which are returned by springs 23. A door in the casing gives access to the pivoted chord strikers 27, each of which carries a knob 33 by which it may be drawn back against the action of a spring 34 which spring on release of the striker impels the latter with sufficient momentum to strike the strings. Damper plates 35, 36 pivoted at 37 may be pressed against the strings by means of a U-shaped pedal 41 and links 39, 40 the pedal being controlled by springs 44. Harmoniously corresponding keys 17 and knobs 33 may be similarly coloured; or the bar 45 may be provided with indications of harmonious combination.
Patent GB-624103-A (GB)
Title: Method and apparatus for magnetic separation of very fine pulverulent products
IPC: B03C1/12
Filed: 1946-10-07
Abstract: 624,103. Magnetic separators. COMPAGNIE DE PRODUITS CHIMIQUES ET ELECTROMETALLURGIQUES ALAIS, FROGES, & CAMARGUE. Oct. 7, 1946, No. 29867. Convention date, Oct. 12, 1945. [Class 72] A method and apparatus for the magnetic separation of fine pulverulent products in the dry state in which the products fall freely as a thin vertical sheet past a plurality of superposed zones of magnetic attraction arranged close to said sheet, is characterized by dispersing the pulverulent product to obtain a volumetric concentration of less than about 1/100 before it reaches the magnetic zones. In the apparatus shown the pulverulent material falls from a hopper 1 via a vibrating sieve 2 whose mesh is chosen to give the necessary volumpetric dispersion, as an annular sheet into the flue formed by the non-magnetic fixed outer wall 3 and inner rotary drum 6. Inside the drum 6 is a fixed vertical electro - magnet having several superposed polepieces 4 and windings 5, the polepieces being interrupted over one sector for the whole height of the apparatus, at which interruption they are replaced by a magnetic screen 11. Here, too, the wall 3 is extended into a hood 9 enclosing a rotary brush 8 rubbing against the drum 6. Magnetic material is attracted during its free fall to the drum 6 and removed therefrom by the brush 8 and into a hopper 12, whilst the non-magnetic particles fall into the hopper 7.
Patent GB-432865-A (GB)
Title: Sound or light signalling system for vehicles or rolling stock
IPC: B60Q1/52
Filed: 1933-10-28
Abstract: 432,865. Road signals for controlling traffic ; detecting approach of overtaking vehicles. VIEL, E., 11, Boulevard de Chezy, Rennes, Ille - & - Vilaine, France. Oct. 28, 1933, Nos. 30001, 30002, and 30003. Void [Abridged as open to inspection under Sect. 91 of the Acts, April 30, 1934]. Drawings to Specification. [Class 118 (ii)] The sound of a vehicle hooter or alternatively the light from a head-light is used : (1) to warn drivers of the approach of an overtaking vehicle or (ii) to control road traffic signals. The road traffic signals may comprise light beams projected across a road and, if the signals are operated by the whistle of a train approaching a crossing, may be supplemented by barriers lowered across the roadway. If the apparatus is mounted on a vehicle, the detecting device is mounted in a rubber suspension which is carried by an oil-filled dash-pot and the responding device comprises a relay which closes circuits for visible and audible signals adjacent the driver and for a visible reply signal to the overtaking vehicle. The time and duration of the receipt of the signal may be recorded. When traffic signals are operated, they are maintained for sufficient time to allow vehicles to cross and the detecting devices are made more efficient on the main than on the cross-road.
Patent GB-763130-A (GB)
Title: Improvements in or relating to cinematograph projection and sound reproduction installations
Inventor: GOTZE ERICH
IPC: H04B15/00
Filed: 1954-10-19
Abstract: 763,130. Sound and picture apparatus. ZEISS IKON AKT.-GES. Oct. 19, 1954, No. 30066/54. Class 40 (2). [Also in Group XX] To eliminate sound interference in a loudspeaker installation 9 caused by operation of an ignition apparatus 2 which supplies voltage impulses of high peak value to a H.P. gas discharge lamp 1 in a cinematograph projection and sound reproduction installation, a switch 3 which controls the ignition apparatus 2 switches off the loud-speaker installation during the period of ignition. As shown, the switch 3, of the multi-contact push-button type, has a contact 4 closure of which energizes the ignition apparatus 2, and simultaneously with such closure another contact 5 closes to short-circuit the output side of an amplifier installation 6 across a protective resistance 7 while another contact 8 opens to switch off the loud-speaker installation 9 from the amplifier installation 6. Interference sounds in the loud-speaker installation caused by operation of the contact 8 may be reduced by coupling to the contact 8 one or more rotary resistances (not shown) which reduce the current in the installation practically to zero before its switching off.
Patent GB-298991-A (GB)
Title: Improvements in and relating to traps for flyscreen doors and like closures
IPC: A01M1/10
Filed: 1928-10-18
Abstract: 298,991. Fahey, C. E. Oct. 18, 1927, [Convention date]. Void [Published under under Sect. 91 of the Acts]. Insect traps.-Screen doors, windows, or like closing members are fitted with insect trapping devices comprising box-like members 6 having solid backs 7 and bottoms 8 and provided with woven wire or metal gauze tops 11 and fronts 12. Orifices are arranged along the front of each trapping member and such orifices are fitted with woven wire conical funnels 23 having their wide ends woven into the meshes of the front of the trap. A sliding door 14 is provided at the top of each trap. The trapping devices are secured at the ends of the stiles or transoms by the insertion of pins 15 on the ends of the devices into slots 17 formed in plates 16 that may be fastened to the doors or windows. Hasp fastenings 21 prevent the removal of the traps. The transom bar or sill of the door or window frame may be cut away to reveal the front of the trap. In a modification the trap has the openings in its base which is supported above an inclined passage way entered through plain openings in the screen. In another modification the trapping chamber is formed between the two parts of a split or double leaf transom. In a further form the chamber is formed by a wire gauze cylinder that is provided at its ends with square supporting members by which it can be held in the desired position.
Patent GB-1434247-A (GB)
Title: Ribbon spool
IPC: B41J33/00
Filed: 1973-06-26
Abstract: 1434247 Typewriter ribbon spools KORES HOLDING ZUG AG 26 June 1973 [31 July 1972] 30301/73 Heading B8M An ink ribbon spool comprises two identical spool halves 1a, 1b each comprising a hub portion 2a, 2b and a flange portion 3a, 3b, each hub portion being made of plastics material and each flange of sheet metal embedded into the hub portion by moulding. The flange portion includes radially extending dove-tail portions 23 for embedding in the hub portion. The two halves are secured together by mating pins 4a and recesses 5b provided on each half, each half having at least one pin and at least one recess. Each half is also provided with a slot 6a, 6b extending parallel to the spool axis and along a chord of the hub, recesses, e.g. 106 being provided substantially tangential to the slot 6. A sheet metal strip 7 having arrow heads 8 is inserted in the slot 6 with the heads 8 protruding over the hub surface for attachment of the ink ribbon. The metal strip 7 is also provided with rolled portions, e.g. 14, 15 which locate in the recesses such as 106. The hub is also provided internally with projecting lugs 22 which centre the spool on a driving shaft, keyways 21 also being provided in end walls 20 of the hub portions for engaging with driving pins.
Patent GB-391380-A (GB)
Title: An improved hydraulic variable speed gear
IPC: F16D31/04
Filed: 1932-10-29
Abstract: 391,380. Hydraulic transmission of power. LEY, E., Muttenz, near Basle, Switzerland. Oct. 29, 1932, No. 30375. Convention date, Oct. 30, 1931. [Class 69 (ii).] A hydraulic variable-speed gear comprises a rotary drum c on the driving shaft a, and a plurality of toothed wheel pumps, the pinions e of all pumps meshing with a common pinion m on the driven shaft. The pump inlet ports g<1> are always open, the outlet ports h<1> being controlled by an axially-slidable sleeve i. Specifications 2842/09, 143,422, 217,852, 256,135, and 305,000, [all in Class 69 (ii), Hydraulic presses &c.], are referred to.
Patent GB-1019947-A (GB)
Title: Sensing switch
IPC: H01H36/00
Filed: 1962-08-08
Abstract: 1,019,947. Retractive switches; magnetic switches. HYDRAXTOR CO. Aug. 8, 1962 [Aug. 17, 1961], No. 30426/62. Heading H2B. A switch-actuating member comprises a movable permanent magnet 38 connected via a retainer member 39 with a sensing arm 36 such that when some moving article strikes the arm the magnet is rotated from an initial position to a second position to actuate a switch, a magnetic biasing force being provided by a fixed permanent magnet 46 to restore magnet 38 to its initial position. The switch is actuated by movement of magnet 38 into a position in which it causes contact blades 28, 30 to close, or in which it allows the blades to separate, or alternatively a pin 74 on the retainer 39 of the magnet actuates contact blades 28a, 30a directly when the magnet is rotated (Fig. 8, not shown). The initial position of magnet 38 and therefore arm 36 is adjustable by a stop screw 54 (Fig. 1, not shown) and a stop 57 keeps magnet 46 at a slight angle to magnet 38 to ensure a slight biasing force thereon in its initial position. Blades 28, 30 are of ferrous or other magnetic material with silver, tungsten or gold contact points. Reference has been directed by the Comptroller to Specification 892,823.
Patent GB-677277-A (GB)
Title: Improvements in or relating to friction clutches
IPC: F16D13/54
Filed: 1949-11-28
Abstract: 677,277. Friction clutches. T.M.M (RESEARCH), Ltd., and STANFORD, S. A. Oct. 13, 1950 [Nov. 28, 1949], No. 30450/49. Class 80 (ii). In a friction clutch of the type in which a number of friction discs 12, 12 and 15, 15 on the driving and driven parts are adapted to be engaged by being pressed into non-slipping relationship by means of toggle levers and comprising a thrust ring 18, an axially displaceable presser ring 17, toggle levers 19 of which each is received at one end in a socket 175 in the presser ring 17 and at the other end bears on a radial track 181 presented by the thrust ring, and an axially movable cam sleeve 20 surrounding the rings 17 and 18 and co-acting with the toggle levers 19 so that axial movement of the sleeve constrains the free end of the toggle levers to move over the tracks, the latter are formed with a non-concave (i.e. straight or convex) profile whereby the speed of movement of the presser ring 17 in relation to the speed of movement of the cam sleeve 20 remains constant or decreases during the operation of engaging the clutch. In the arrangement shown in which the presser ring 17 is slidably mounted on a sleeve 13 keyed to a shaft 10, a spring loaded pin 173 on the ring 17 enters one of a series of holes 172 in an adjusting ring 171 splined to the sleeve 13. A corrugated spring ring 174 is provided between the outer disc 12 and the ring 171. Each toggle lever 19 carries rollers 191 and 192 and in the disengaged position of the clutch, as shown, the rollers 191 engage flat inclined tracks 181 on the thrust ring 18 and cam surface 201 on the sleeve 20. The presser ring 17 is moved by the sleeve 20 to engage the clutch, against springs 21. Pegs 22 may be placed around the clutch axis intermediate the toggle levers and may be mounted in the presser ring to engage sockets in the thrust ring 18. Axial adjustment of the ring 18 relative to the friction disc assembly is effected by disengaging the clutch, withdrawing the ring 171 from the pin 173 and rotating the ring 17 and ring 18 on the sleeve 13. In a modification the tracks 181 are formed with a convex curved profile. Specification 450,933 is referred to.
Patent GB-641614-A (GB)
Title: Improvements in or relating to the automatic control of the magnetic flux in electric generators, particularly bicycle generators
IPC: H02K21/00
Filed: 1947-11-17
Abstract: 641,614. Machines with permanent magnets. LINDBLAD, K. B. Nov. 17, 1947, No. 30459. Convention date, Nov. 10, 1947. [A Specification was laid open to inspection under Sect. 91 of the Acts, May 19, 1948.] [Class 35] In a variable speed generator, particularly a cycle dynamo, the armature has individual polepieces which are magnetically shunted at higher speeds by centrifugal control, the shunt or shunts moving radially as shown, the rotors armature has a core 7 and four projecting polepieces 14 within polepieces 3, 4, 5 and 6 of the magnet. 1. The shunt comprises weights 22 carried by springs 19 in a support 17 and a magnetic disc 16 fixed to the shaft which does not extend to the vicinity of the armature polepieces. In a modification the turns of a coil spring themselves serve as the shunt. The shunts may co-operate with the polepieces of a stationary armature which surrounds a rotary magnet.
Patent GB-343016-A (GB)
Title: Manufacture of azo-dyestuffs and the application thereof
IPC: C09B29/15
Filed: 1929-10-08
Abstract: The dyestuffs made by coupling an ester of 1-naphthol-4-carboxylic acid with a diazo compound or metal compounds of these dyestuffs are used for colouring cellulose varnishes.  In an example the dyestuff from the ethyl-ester and diazotized aniline is dissolved in finished nitrocellulose varnish; the product yields transparent orange coatings fast to light.  By incorporating suitable additions, the varnish may be converted into a mat varnish or covering varnish.ALSO:Azo dyes are made by coupling a 1-naphthol-4-carboxylic acid ester with a diazo compound.  They may be used as acid, mordant, lake and cotton dyestuffs or for cellulose derivatives, e.g. acetate silk or nitrocellulose varnishes and yield metal compounds by treatment with agents yielding metal, e.g. copper and chromium compounds.  In examples (1) the methyl or ethyl ester is coupled with diazotized aniline, monoacetyl-p-phenylene diamine, m-aminobenzylalcohol, sulphanilic acid and 2-naphthylamine-1-sulphonic acid (red barium lake), (2) the dyestuff 4-chloro-2-aminophenol-6 - sulphonic acid --> 1 : 4 - naphtholcarboxylic methylester is treated with agents yielding copper or chromium, (3) the dyestuff 1-amino-2-naphthol-4 - sulphonic acid --> the methylester yields reddish-blue shades on wool when after-chromed, (4) the dyestuff aniline --> the ethylester is dissolved in finished nitrocellulose varnish; the product yields transparent orange coatings; the metal compounds as in (2) may also be used, (5) acetate silk is dyed red orange with the dyestuff aniline --> the methylester.  Specifications 263,579 and 271,898, [both in Class 2 (iii), Dyes &c.], are referred to.
Patent GB-426885-A (GB)
Title: Improvements in or relating to heat transmitting tubes
IPC: F28F13/12
Filed: 1933-11-03
Abstract: 426,885. Making heat-exchange tubes. CLAYTON DEWANDRE CO., Ltd., and BLOMELEY, H., Titanic Works, Lincoln. Nov. 3, 1933, No. 30601. [Classes 83 (ii) and 83 (iv)] [See also Group XIII] Soldering.-A wire winding b is wound round a rod a and inserted into a tube f, the winding being then caused to adhere to the inner surface of the tube, and the rod a being subsequently withdrawn. The winding may be secured by replacing the rod a by a stick of solder, the tube being then heated and rotated so that the molten solder is distributed round the inside of the tube and on cooling the winding is fixed in position. Alternatively the inside of the tube may be previously coated with solder or wires of solder may be wound between the coils of the winding. Heating the tube will then fix the winding in position. Specification 417,668 is referred to.