baber/WOPTO huggingface dataset:
Patent GB-822697-A (GB)
Title: Improvements in or relating to umbrella top assemblies
IPC: A45B25/10
Filed: 1958-04-09
Abstract: 822,697. Umbrellas. WUSTER, H. April 9, 1958, No. 11300/58. Class 134 In an umbrella comprising a Crown and a cover cap detachably secured by means of a locking spring to a tubular stick the locking spring is accommodated in the stick and comprises two locking noses protruding from the end portion of the stick, one of which retains the crown in position and the other the cover cap. The end portion of the stick is grooved or of polygonal cross-section and extends through corresponding bores formed in the crown and over cap so that these members are not rotatable on the stick. As shown, the stick 1 is formed with a narrow end portion 1a of hexagonal cross-section. The crown 2, supported by a washer 5 is held securely between the shoulder of the stick and the nose 9 of the locking spring 8. The cover cap 3 is formed with a sleevelike portion 3a provided with an aperture in which the nose 10 of the locking spring engages. The crown 2 and cap 3 may consist entirely of plastc in which case the washer 5 may be dispensed with. The lower end of the spring is attached to the Stick at 7 or, as indicated in broken lines, at 7a. To enable the cap and crown to be reelased the cap is provided with one or more apertures 11 through which the locking nose 10 is accessible with the aid of appropriate tools.
Patent GB-370658-A (GB)
Title: Apparatus for electrically measuring the concentration of liquids
IPC: G01N27/06
Filed: 1931-04-17
Abstract: In apparatus for measuring the concentration of liquids or the presence of impurities in liquids, the electrical conductivity of the liquid in a cell is measured by measuring the current flowing therethrough and warning means, operated by the passage of excessively high and low currents, indicate excessively high or low values, respectively, of concentration or impurity.  A glass cell 1 having platinum or carbon electrodes 2, 3 contains the liquid under test, the electrodes being connected in series with an ammeter A, relays 4, 5 and a potentiometer P, the ammeter A being shunted by a resistance R which may be adjusted automatically or manually to compensate for variations in the temperature of the liquid under test.  The ammeter A is calibrated to read directly in <PICT:0370658/III/1> terms of the concentration or percentage impurity of the liquid and the supply, which may be D.C. or A.C. is connected to the high voltage terminals P1, P3 of the potentiometer P.  The relays 4, 5 operate when the current falls or rises above predetermined limits p  and thus close circuits for either the low or high warning lamps L. H.  Alternatively a single moving coil or moving iron relay may close either of two circuits containing relays which operate and energize the warning indicating means. Specification 226,047, [Class 135, Valves &c.], is referred to.
Patent GB-1463833-A (GB)
Title: Recorded announcements facilities in automatic telephone exchanges
IPC: H04M3/487
Filed: 1975-01-24
Abstract: 1463833 Automatic exchange systems PLESSEY CO Ltd 24 Jan 1975 [14 March 1974] 11406/74 Heading H4K Announcement machines are coupled to connection units terminated on a switching network in such a manner that any announcement machine may be connected to any of the connection units, the path between an announcement machine and a connection unit only being switched through on the occurrence of a tone produced by the announcement machine prior to the commencement of announcement. Continuous loop magnetic tape announcement machines RA-RN are coupled to connection units 1CU-4CU via a reed relay crosspoint network involving relays 1A-4A, 1B- 4B &c. In operation the central processor DP of the exchange causes a calling subscriber who requires an announcement to be connected to any one of the connection units 1CU-4CU which are connected as incoming junction units to a network (JAN) of the exchange described in Specification 1,393,156, (Fig. 2, not shown). The processor then sends the identity of the announcement machine and of the connection unit to a distributer DIST which marks an appropriate one of the gates G1A-G4B &c. over a lead L1A-L4N and simultaneously energizes the appropriate announcement machine over a wire LRA-LRN. The machine starts playing an announcement from an arbitrary position and when a 5kHz tone of 5 ms. duration is played back signalling the beginning of the announcement, a pulse is produced at the output of a respective pulse-rectifier circuit PRA-PRN to enable the marked one of the gates G1A-G4B &c., thereby operating the relay to couple the announcement to the connection unit. The announcements may comprise such information as "Weather Forecasts" "Motoring" "Recipe" "Stock-market Reports" and exchange service announcements appertaining to changed directory numbers or trunk-route congestion. Each announcement may be repeated several times on a single tape loop, each individual announcement being preceded by the 5 kHz tone.
Patent GB-376836-A (GB)
Title: Improvements relating to hard metallic alloys for implements and tools
IPC: C22C29/14
Filed: 1931-04-17
Abstract: A hard alloy for tools and implements contains boron as the main constituent and in addition one or more metals or alloys the melting point of which is above 1000 DEG  C. and particularly those that easily form compounds with boron e.g. titanium, zirconium, tungsten, vanadium, chromium, manganese, cobalt, and iron, or alloys of these metals.  The tools etc. may be obtained by casting, or by pressing and sintering, in some cases hot pressing being resorted to, preferably in a neutral atmosphere e.g. in argon or hydrogen, or in a vacuum.  In an example, a powder comprising boron and 15 per cent of zirconium is heated in vacuo at 1350 DEG  C. to expel gases, and afterwards pressed and sintered in vacuo, first at 1800 DEG  C. and later at 2100 DEG  C.ALSO:A hard alloy for tools and implements contains boron as the main constituent and in addition one or more metals or alloys the melting point of which is above 1000 DEG  C. and particularly those that easily form compounds with boron e.g. titanium, zirconium, tungsten, vanadium, chromium, manganese, cobalt, and iron, or alloys of these metals.  The tools &c. may be obtained by casting, or by pressing and sintering, in some cases hot pressing being resorted to, preferably in a neutral atmosphere e.g. in argon or hydrogen, or in a vacuum.  In an example, a powder comprising boron and 15 per cent of zirconium is heated in vacuo at 1350 DEG  C. to expel gases, and afterwards pressed, and sintered in vacuo, first at 1800 DEG  C. and later at 2100 DEG  C.
Patent GB-727807-A (GB)
Title: Improvements in the production of porous electrodes for accumulators
IPC: H01M4/80
Filed: 1952-05-07
Abstract: A process for the production of porous electrodes for accumulators from light nickel powder obtained by thermal decomposition of nickel carbonyl of which the coarser particles are agglomerated to a sponge, consists in breaking up the said particles by a mechanical treatment into smaller spongy particles and then subjecting the powder to sintering and/or pressure treatment.  If nickel powder of a bulk density of 0.5 kg/1 obtained by thermal decomposition of nickel carbonyl is heated at 800 DEG  C., a porous plate is obtained whose pore widths vary between 10 and 300m .  If the same powder, by the process of the invention, is passed through a 400 meshes/sq. cm. sieve by means of a flexible scraper and sintered as above, the porous plate has a pore volume of 89 per cent. and the pores vary between 10 and 25m .  By impregnating the plate with nickel hydroxide, a positive accumulator electrode is formed.  The mechanical treatment may consist of wind sifting or magnetic separation.  The powder may be produced by a method as described in Specification 284,087, [Class 82 (i)].  Specifications 311,141, [Class 82 (i)], 497,844, [Group XXXVI], and 678,138, [Group XXII], also are referred to.
Patent GB-1096233-A (GB)
Title: Improved apparatus for centering and driving a railway vehicle axle set
IPC: B23B5/28
Filed: 1965-03-18
Abstract: 1,096,233. Wheel set lathes. P. LADOVES and H. LACOSTE-TUZAN. March 18, 1965 [March 23, 1964], No.11533/65. Headings B3B and B3T. In a machine for re-shaping railway vehicle wheels, which is template controlled, the wheel set is positioned and supported in the machine and is rotatably driven during the machining operation by a pair of driving rollers 104 in engagement with each wheel tread. To facilitate a constant and regular drive in spite of possible wheel tread surface irregularities, resilient means in the form of an hydropneumatic accumulator 202 is provided in the driving roller hydraulic supporting system which permits a flexibility of movement of the roller supports 105 to compensate for surface irregularities and at the same time transmit a positive drive to the wheel set. The wheel set may be mounted for rotation between centres or where the axle has external or internal axle box, means having an abutment J and C respectively are mounted on the machine frame to facilitate correct alignment and centring of the wheel set. In the latter cases transversely actuated rams V urge rollers G into engagement with the well flanges to effect transverse alignment and rigidity during machining.
Patent GB-643822-A (GB)
Title: Improvements in or relating to television systems employing negative photographic images
IPC: H04N5/202
Filed: 1948-04-28
Abstract: 643,822. Television. DU PONT DE NEMOURS & CO., E. I. April 28, 1948, No. 11681. Convention date, April 29, 1947. Drawings to Specification. [Class 40 (iii)] [Also in Group XX] In an intermediate film television trarismission system in which a negative picture image is projected on to a picture signal generating tube in which it is scanned to generate television signals the photographic emulsion layer on the film has a characteristic curve of density (ordinate) v. log-exposure (abscissµ) that has a low slope at low and medium exposure levels and a steep slope at high exposure levels. The film is prepared by coating a cellulose nitrate film base bearing an anti-halation layer on one surface and a thin gelatin nitrocellulose anchoring layer on the other surface with two layers of panchromatic gelatino-silver iodobromide to form a first layer having medium or low speed and relatively high contrast and a coating weight of about 0.075 gms. of silver halide per sq. decimeter of film surface and a second layer having relatively high speed and low contrast and a coating weight of about 0.065 gms. of silver halide per sq. decimeter of film surface. The quality of the image which is reproduced at the receiver when a film of this type is employed for transmission (the polarity of the signals being reversed at the transmitter) is said to be comparable with that which is reproduced when positive images are employed at the transmitter.
Patent GB-436551-A (GB)
Title: A method of and means for obtaining complete combustion in furnaces, boilers and the like
IPC: F23L7/00
Filed: 1934-04-18
Abstract: 436,551. Nozzles. BACHLER, G., and ROTATIONSFEUERUNGSPATENTGES., 14, Herrengasse, Vienna. April 18, 1934, No. 11685. [Class 69 (iii)] [See also Group XII] Gases in the combustion chamber of a furnace are mixed by injecting steam, air or other gaseous medium into the chamber through one or more nozzles provided wth a liner and a helically grooved member adapted to impart to the issuing steam &c. the form of a hollow conical or cylindrical rotating stream. Fig. 2 shows a bifurcated nozzle, each orifice being provided with a liner 2 and helically grooved member 3, 4 adapted to impart rotary movement to the streams of fluid in opposite directions. The bore of the liner may be cylindrical throughout or it may be part cylindrical and part tapered as shown. The grooved member may be of the form shown in Figs. 6 and 7 having a helical groove of steep pitch and mandrels 9, 10.
Patent GB-255968-A (GB)
Title: Improvements in and relating to advertising or announcing apparatus
IPC: G09F11/26
Filed: 1925-05-06
Abstract: 255,968. Festing, B. H. May 6, 1925. Feeding webs.-In an advertising apparatus of the kind in which a band or ribbon is operated to expose successively the advertisements carried thereby at a suitable exhibiting aperture, the band is in the form of a coil with the ends secured together, and is unwound from the inside of the coil and simultaneously rewound on the outside. The band may be twisted through an angle of 180‹ between the inner and outer turns of the coil and bear advertisements on both sides, the whole of the advertisements being exposed in two complete unwinding and winding operations. The coil 18 is mounted on rollers 17 supported on a framework 16 in a casing ,and the band passes from one of the rollers round a guide roller 23 and a feed-roller 24, the straight run 20 of the band being disposed behind a winding in the casing. A roller 40, car- Tied by a pivoted arm 41, is pressed by a spring 42 to hold the band in contact' with the feedroller 24 which is driven by a worm-wheel 38, worm-shaft 33 and belt 36 from a motor 28. Boxlike guides 25, which may have removable glass or other linings, and an inclined guide roller 43 are provided.
Patent GB-275331-A (GB)
Title: Improvements in kinematograph color films and methods of manufacture
IPC: G03C7/22
Filed: 1926-05-05
Abstract: 275,331. Thornton, J. E. May 5, 1926. Colour kinematography. - Relates to films of the kind described in Specifications 272,986, and 273,056 which are built up by cementing together back-to-back two component films, each carrying a colour record image in coloured colloid relief produced in a ready coloured sensitive layer, and each having picture margins carrying printed colloid of full thickness. The invention consists mainly in cementing the two component films together after printing but before developing, so that the films will receive identical treatment in the developing &c. baths. The component images may be printed on two single-width strips, or side-by-side upon a double-width strip subsequently slit before cementing, as in Specifications 213,647, and 213,934, [Class 98 (ii), Photographic processes &c.,], from single-width or doublewidth negatives or printing clichÚs. Cementing is effected either as in Specifications 272,986 and 273,056, or by applying a solvent such as acetone or methyl alcohol to the back of each film before pressing together. The films are of standard width, so that no trimming is necessary after cementing. Specifications 12229/12 ; 28875/12, [Class 98 (ii), Photographic processes &c.], 232,302, and 233,991 also are referred to.
Patent GB-252697-A (GB)
IPC: H01H83/00
Filed: 1926-05-06
Abstract: 252,697. British Thomson-Houston Co., Ltd., (Assignees of McDonald, G. R.). May 28, 1925, [Convention date]. Automatic circuit-breakers for direct current which open at a lower value of current when the current is rising rapidly (as in the case of a fault) than when the current is rising slowly (as on ordinary overload), as described in Specification 225,963, are retained set by a latch 14, Fig. 1, engaging the underset electromagnetically-operated closing toggle 13, 12, the latch 14 in turn being locked by a second latch 16 which is tripped on overload. The tripping is effected by an extension 21, Fig. 2, of the tripping armature 20 which is under the action of two opposing fluxes both generated by the current in the terminal stud (i) the main flux through the core 22, 23 tending to attract the armature to the pole-pieces 25 and (ii) a shunt flux through the back plate 28, the bolt 24 and the adjustable pole-piece 26 tending to attract the armature to the pole-pieces 26. The bolt 24 is surrounded by a conducting sheath 33. With slowly-rising excess current, the shunt flux path becomes saturated and the main flux finally draws the armature over from its normal position, shown, to trip the switch. With rapidly-rising excess current, the sheath 33 chokes off the opposing flux in the shunt flux path and the circuit-breaker is tripped at a lower value of current.
Patent GB-740999-A (GB)
Title: Light vehicle provided with movable controls for variation of the steering position
IPC: B60K5/00
Filed: 1953-04-30
Abstract: 740,999. Steering motor vehicles. ZOCCHI, G. April 30, 1953 [May 3, 1952], No. 11997/53. Class 136 (1). In a light vehicle, provided with a non-transversally mounted seat for the driver and passengers sitting side by side, the controls are arranged on a swivelling bar 8 which is movable into and adapted to be fixed in a number of positions transversally with respect to the axis of the vehicle, in order to vary the position of the steering mechanism along the seat for the purpose of balancing the load of the passengers or other load with respect to the vehicle when the load is varied. The vehicle may have three or four wheels and the engine may be mounted at the rear or at the front. The steering column of the front steering frame 4 is pivotally mounted in a sleeve 3 and carries a lug 6 to which a crank 7 is fixed. The swivelling bar 8 is hinged around the axis of the sleeve 3 and carries a handle-bar 16 on which levers 17, 18 and grips 19, 20 are provided for the control of the clutch, accelerator and brake. A rod 21 is pivoted to the handle-bar 16 and at 23 to the crank 7. The bar 8 has a mounting 10 for a spring-stressed and normally shiftable tooth 11 which is designed to co-operate with a plurality of notches cut in a sector 12 integral with a support structure 13 connected to a frame 9 which defines the dashboard. Two rods 26, 27 are carried by a part 2 of the vehicle chassis and form joints 26a and 27a for telescopic rods 28, 29 respectively. The rods 28, 29 are connected together at 27a and are linked by engaging means 8a to the bar 8. The rod 28 has a fork 28a which imparts a sliding movement to a control pedal 30 slidable along and turnable with an axle 31 of square cross-section. The axle 31 is mounted in a tubular member 32 which has a longitudinal slot through which the pedal 30 projects. The member 32 is carried by bearings 33 fixed to the frame 9.
Patent GB-254052-A (GB)
Title: Improvements in cylinder-heads for overhead valve internal combustion engines
IPC: F02F1/24
Filed: 1925-05-08
Abstract: 254,052. Lord, A. O. May 8, 1925. Cylinders, valve claests and covers for, passages of, and arrangement of igniters in.-A cylinder head for an overhead valve engine comprises a one piece casting having two outwardly extending casings g carrying cam-shafts s at their extremities. Bearing blocks o are mounted in notches in webs in the casings g and covers g<1> are secured to bearing caps b'. The cam shafts may be driven by chain gearing as described in Specification 248,961, [Class 7 (vi), Internal-combustion engines, Valves &c. for]. The valves i, e are arranged at 45‹ to the cylinder axis, and the sparking plug p are placed in recesses in the trough t between the casing g and may be arranged out of the plane of the valves i, e. The inlet and exhaust passages k l are arc-shaped. The invention is (particularly applicable to small multi-cylinder engines.
Patent GB-418455-A (GB)
Title: Improvements in or relating to the manufacture of azo dyestuffs
IPC: C09B43/145
Filed: 1933-04-25
Abstract: Polyazo dyes having the general formula <FORM:0418455/IV/1> in which R = an aromatic residue (the same or different) which may be substituted, e.g. by halogen, alkyl, alkoxy and sulpho groups, but contains no free hydroxy or amino groups and in which R1 and/or R4 may carry additional azo groups are made by condensing a terephthaloyl halide (1 mol.) with the corresponding amino polyazo compound (2 mols.) in presence of a suitable condensing agent.  They dye cotton, wool, silk and regenerated cellulose in orange to brown shades fast to washing and light.  In examples: (1) the dyestuff 2-naphthylamine-6 : 8-disulphonic acid --> o -methylaniline sulpho acid (hydrolyzed) --> m-toluidine (2 p  mols.) is condensed with terephthaloyl chloride; (2) the dyestuff sulphanilic acid --> 1 : 6- or 1 : 7-Cleve's acid --> m-toluidine (2 mols.) is condensed as in (1); (3) the aminodisazo compound in (1) (1 mol.) and the aminodisazo compound in (2) (1 mol.) are condensed with terephthaloyl chloride (1 mol); the proportion of the aminodisazo dyes may be varied.  The trisazo dye aminoazobenzene disulphonic acid --> m-toluidine --> m-toluidine is also specified as a starting material as well as chloro-terephthaloyl chloride.  Specification 326,791, [Class 2 (iii)], is referred to.
Patent GB-1075321-A (GB)
Title: Improvements in and relating to ignition devices for use with gas or oil burners
IPC: F23Q1/06
Filed: 1965-03-23
Abstract: 1,075,321. Ignition systems. LABORATOIRE D'ELECTRONIQUE ET D'AUTOMATIQUE DAUPHINOIS (L.E.A.D.), and APPAREILLAGE THERMOFLEX, ETABLISSEMENTS J.M. DARD. March 23, 1965 [March 24, 1964], No. 12257/65. Heading F1B. An ignition device for igniting gas or oil burners comprises an arc gap member 11 placed in the vicinity of a burner to be ignited and fed on the one hand by an alternating low voltage source 12 and on the other hand by a high voltage pulse generator which is itself fed by the alternating voltage source and means dispersed between the member and the source for isolating the source from the high frequency current components of the arcs produced across the element. The isolating means may comprise at least one high frequency choke coil 16 in series between one electrode of the arc gap member and one terminal of the low voltage source and a filter capacitor 15 may be connected in series with the choke. The isolating means may comprise a second high frequency choke coil and a second filter capacitor between the other electrode of the arc gap member and the other terminal of the low voltage source. A switch may be provided for disconnecting the alternating voltage source from the pulse generator after current has flowed through the member for a predetermined period of time. Reference is made to delayed action by electric, electro-hydraulic or electro-pneumatic relay. In Fig.4 (not shown) ionization causes the resistor of the blade 36 to continue to be traversed, even when no arc is present across the gap 11, by a small current capable of generating sufficient heat to cause the blade 36 to close the switch 35 and open the switch in series with the primary winding 17. It is stated that the capacitors 15 may be replaced by resistances whose self-inductances block the high frequency components.
Patent GB-177083-A (GB)
Title: Improvements in and relating to ball trimming lathes
IPC: B29C37/02
Filed: 1921-04-28
Abstract: 177,083. White, A. C., (Goodrich Co., B. F.). April 28, 1921. Lathe centres.-In a machine for trimming the overflow fin from moulded articles such as golf balls &c., a special centre is employed consisting of a spindle 33 Having a centre point 34 and journaled by a ball bearing 33a in the tailstock spindle.