baber/WOPTO huggingface dataset:
Patent FR-2174128-A1 (FR)
Title: Continuous cellulose bleaching - using reading as control parameter
IPC: D21C9/10
Filed: 1973-02-28
Abstract: A control method uses instrumentation for a continuation bleaching process applied to cellulose and comprising extraction of residual lignin, optionally using chlorination and alkali phases, initial bleaching, optionally using hypochlorite phases, and final bleaching; a firt variable associated with the process and at least one other variable are regulated. At least that reading which relates to the first variable is fed into an on-line, real time data processing plant, which generates continuously new simulated reference values and/or new real reference values, using one or more separate mathematical model functions associated with some phase of the bleaching process.
Patent FR-2220605-A1 (FR)
Title: Stuffer box yarn crimper - has heater and feed rolls driven via magnetic clutches for rapid shutdown
IPC: D02G1/12
Filed: 1973-03-06
Abstract: A stuffer box crimper has several units each including a stuffing chamber defined by a peripheral channel in a rotating heated roll and a steel belt surround and moving with the heated roll. Yarn is fed into the stuffing chamber by a pair of feed rolls whereby it is compressed into a plug and the heated roll and feed rolls are driven from separate shafts via electromagnetic clutches to allow the transmission of drive to the heated roll and feed rolls to be interrupted in the event of yarn breakage. Pref. the heated roll and feed rolls can be braked mechanically or electromagnetically as can the yarn take-up device. Pref. the crimped yarn passes to the yarn take-up device around a pair of smooth rolls which are driven from the drive shaft of the feed rolls and which act to equalize yarn tension. In the event of shutdown the smooth rolls continue rotating and the yarn slips on them. A single unit can be shut down when yarn breakage occurs without affecting operation of the other units.
Patent FR-2229834-A1 (FR)
Title: Fixture-pin for upright of a guard-rail - has top jaw fixed to attachment arm along which slides bottom jaw
IPC: E04G21/32
Filed: 1973-05-18
Abstract: The top jaw is integral with the upright of the guard-rail. The attachment arm is a rectangular cross-sectioned tube split lengthwise, with the rims of the slit bent inwards at right angles. The top end of the arm is closed by a plate through which is inserted a screw with operating-wheel. The top jaw can pivot on itself around an axis perpendicular to the attachment-arm. The bottom jaw consists of a flat metal piece angled at two points equidistant from its centre so that it forms an elongated isosceles triangle with the apex between the two rims of the slit attachment arm. The apex is soldered onto a square tube which slides inside the attachment arm, by means of a device which can block or promote its movement.
Patent FR-2252258-A1 (FR)
Title: Pyrimidal package folded from single blank - open side is closed by interlocking flaps on wall panels
IPC: B65D5/00
Filed: 1973-11-26
Abstract: The blank is in one piece of semi-rigid material. Fold lines are provided to mark the three sides (2, 3, 4) and three flaps (5, 6, 7). A tab (15) is attached to the side (14) of one face (4) and is used to assemble the three sides to give a pyramidal shape, leaving one side open and bounded by the flaps. The first flap (5) closed in has a dovetail cutout (16) in its outer edge (17); the second flap (6) partially covers the first and has a tab (21) locating in the dovetail cutout. The third flap (7) forms the final closure and also has a tab (18) which fits into the dovetail.
Patent FR-2253001-A1 (FR)
Title: Fertilisers contg. potassium molybdate - application to acidic soils to stimulate development of azotobacteria
IPC: C05D9/02
Filed: 1973-12-04
Abstract: K2MoO4 is added (I) at the rate of 0.250kg-5.500 kg/ha. as adjuvant to conventional fertilisers for application to soils having a pH of 5-8.6. (I) stimulates the development of azoto bacteria (Beijerinckia, Derxia and Azotobacter) which fix atmospheric nitrogen. It also stimulates Rhizobium Meliloti, which supplies amino acids and fixes atmospheric nitrogen directly. Mo is usually added as ammonium molybdate, which is not effective in acid soils as the Mo is converted to a sparingly sol. form. Addn. of (I) does not suffer from this drawback.
Patent FR-2256368-A1 (FR)
Title: Pressurised reservoir with sliding wall - has springs moving wall to squeeze flexible walled chamber
IPC: F17B1/12
Filed: 1973-12-28
Abstract: The accumulator has a housing accommodating a chamber of elastic material with inlet and outlet for the fluid under pressure. One of two opposite walls in the housing slides in the latter under spring action towards the other, thus squeezing the chamber between them. The housing can be rectangular, with a series of leaf springs pivoting on stir-ups above one sidewall, while the other ends engage in rings on the opposite sidewall. These springs bear against a plate on the chamber wall, which they cause to slide in the housing. The design allows the fluid to be delivered at virtually constant pressure until chamber is completely empty.
Patent FR-2257461-A1 (FR)
Title: Stabiliser for lorry elevator platform - has roller and cam system limiting relative rotation of double arm lever
IPC: B60P1/44
Filed: 1974-01-11
Abstract: The platform (1) is mounted on a lorry by parallelogram structures, each of which has a part (2) hinged at one end on the lower platform and the other end hinged (4) on a support (5) on the vehicle. A similar part (6) is hinged (7) below and above (8) similarly. The first part (2) is rigid whereas the second part (6) is in two parts, hinged on a pin (10) which allows the length to vary. The pin (8) is an extension of a driven shaft (16) with a cheek (18) joined to the rod (20) of a hydraulic jack (22). The shaft (16) carries a cam on which runs a roller on an extension of part (6), the cam limiting the relative movement between the two parts of part (6).
Patent FR-2259513-A1 (FR)
Title: Device for holding electrical appliance cable coiled - has hooks holding cable and holes for plug pins
IPC: H01R13/60
Filed: 1974-01-25
Abstract: The body of the appliance has pairs of holes into which can be engaged the pins of the male plug (5) of the supply cable (1). The plug reception holes (4) pass through to the interior of the appliance to form ventilation holes for the appliance. These ventilation holes are formed so as to permit the introduction and maintenance of the plug pins of the cable feed. When the appliance is not being used the cable can be wound around the hooks (2) at the corners of the centre of the body and the plug pins fitted into a pair of holes so the cable is conveniently stored. The appliance may be an electric filter type coffee maker.
Patent FR-2263895-A1 (FR)
Title: Modifying surface characteristics of extruded thermoplastic profiles - by spraying particles or fibres on to the profile leaving the die
IPC: B05D5/00
Filed: 1974-03-11
Abstract: The surface props. of extruded thermoplastic profiles are modified by spraying the hot surfaces leaving the die with finely-divided powdered or fibrous matls. The particles become anchored in the hot surface before it chills. Process is used to modify the friction, adhesive or texture characteristics of the surface, by applying colourants or protective coatings, inside and/or outside hollow profiles, and requires less modifying agent to be used than cpds. involving dispersion of the additive throughout the bulk profile. Process is readily applied to existing processing equipment.
Patent FR-2224283-A1 (FR)
Title: Extruder worm of elastomers and thermoplastics - with threads bridged by baffle strips breaking continuity of channel
IPC: B29C48/62
Filed: 1974-04-03
Abstract: An extruder worm for processing elastomers or thermoplastics characterised by these being along part of the length of the worm between two threads defining the track of the worm, a more or less parallel ridge running in roughly the same direction and having at max. the same height as threads and, looking on the direction of the feed, at the start of the parallel ridge, a cross rail blocking the channel between the parallel ridge and the one thread, as well as at the end of the parallel ridge a further cross rail, blocking the channel between the parallel ridge and the second worm thread.
Patent FR-2272917-A1 (FR)
Title: Air cushion conveyor table for sheets - has surface ball valves leaking air held in table by sheets to open valves
IPC: B65G51/03
Filed: 1974-05-27
Abstract: The frame forms a flat tank (1), the upper surface (8) being pierced with holes (9) at regular intervals. On this surface is placed a bed (3) having holes (4) coinciding with those in the frame. Each hole (4) has a lower inverted funnel section joining the straight section (5) communicating with the surface. A ball (7) is loose in the conical section (6) and, when the blower (2) is running, air pressure keeps the ball in the top of the cone, allowing a small escape of air. When the load covers the holes, the back pressure generated pushes the ball off its seat and the air cushion is formed.
Patent FR-2276721-A1 (FR)
Title: Braking for electrical machines - spring operated brake pad angled to enhance braking effect on machine
IPC: H02K7/102
Filed: 1974-06-25
Abstract: Braking system for small to medium sized electrical motors or machines driven from such motors, intended primarily to protect the user from injury due to attempting adjustment before the machine has come to rest. Such machines are envisaged as including rotavators, etc. The braking element consists basically of a friction pad held, when the motor power supply is removed, by a helical spring against a similar surface on some rotating disc surface of the machine. Switching on the machine automatically energises a solenoid which acts against the spring and disengages the braking surfaces. The solenoid operated pad is angled with respect to the rotating surface such as to enhance the braking effect.
Patent FR-2236272-A1 (FR)
Title: Power semiconductor metal heat sink - uses intermediate metal block for semiconductor and heat sink connection
IPC: H01L23/40
Filed: 1974-06-28
Abstract: The power semiconductor is mounted on a heat sink in the form of touchable metal component outer part by connecting the power semiconductor directly to a metal block, which in turn is connected to the outer metal component part over a contact surface, greater than that with the semiconductor, using an insulating intermediate layer. The block may be in the form of a thick plate and an insulating coil may be used as the intermediate layer. The foil may be adhesive on one or both sides. The power semiconductor and/or the block may be pressed against the outer component part by an elastic spring. Between the insulating foil and the outer part may be incorporated a metal interlayer for interference suppression.
Patent FR-2278162-A1 (FR)
Title: Miniaturised radiation detection appts - for instantaneous warning of personal exposure incorporating speaker as well as galvanometer
Inventor: SCHWAB CLAUDE
IPC: H01L31/00
Filed: 1974-07-11
Abstract: A miniaturised appts. for detecting personal exposure to radiation incorporates as the sensitive element a quadratic monocrystal of mercuric iodide with two conducting armatures. The armatures are formed by a metal, germanium or palladium deposited by evaporation under vacuum on two plane faces of the crystal, the thickness of the crystal between the armatures being .1 to 50 mm, pref. .5 to 10 mm. The crystal is encapsulated in an insulating substance which is enclosed in an aluminium box. One gold or stainless steel conducting wire connects one of the armatures to the case; another, connected to the other armature, passes through the case, insulated from it. The appts. incorporates a direct-alternating-direct converter to polarise the armatures, applying a direct voltage (50-100 volts) between them, as well as a low voltage source, a signal device and amplifying and oscillatory circuits to feed the signal device in response to electrical perturbations produced by radiation incident on the monocrystal. The signal device is a speaker and a galvanometer is included as well. The appts. is less bulky than a Geiger-Muller counter and gives an instant alarm, not provided by a photographic film.
Patent FR-2244188-A1 (FR)
Title: Variable sprocket cylinder for dual gauge cine apparatus - has a spindle fitted into an axially sliding sleeve bearing
IPC: G03B31/02
Filed: 1974-09-19
Abstract: The sprocket is fitted at one end of a spindle. This rotates inside a sleeve bearing which passes through a fixed bearing. A flange on the sleeve has a projection which is in contact with a cam shaped bearing endface. It is held in this position by a circumferential spiral spring. Rotation of the sleeve within the bearing by means of the selector causes an axial movement of the sleeve together with the contained sprocket spindle so that one of the two different sprocket tooth rings is positioned opposite to the perforation of the film. The design is intended to ensure smooth film transport particularly of sound synchronised film.
Patent FR-2295669-A1 (FR)
Title: Electroacoustic instrument transposing device - has photoresistive switching elements to extend change over and control progression between notes
IPC: H04S3/00
Filed: 1974-12-18
Abstract: A transposing device for an electro-acoustic musical instrument is used to extend the change-over time between two notes and to attenuate progressively the first note while producing an ascending progression of the new note. It comprises switching elements associated with a servo control. A switching element has an incandescent bulb (10), a convex lens and photo-resistive cells in a metal case (15). Four switching elements are used in the device to establish circuits between four inputs and four outputs of a quadraphonic chain connected to four loud-speakers. The four switching elements can be actuated simultaneously or progressively to obtain the transposition.
Patent FR-2257680-A1 (FR)
IPC: C11D3/16
Filed: 1975-01-10
Abstract: The granular builder-containing detergent which can show high- or low-foam properties in the wash and produces little or no stable foam in the rinsing water contains an essentially water-insoluble wax with a melting point in the range from 35 to 125 DEG C and with a saponification number of less than 100. Production takes place by mixing the wax with the organic detergent components in the molten state, resulting in an intimate mixture.
Patent FR-2300384-A1 (FR)
Title: Sound absorbing panel effective in two frequency domains - combines action of Helm holtz resonator with that of laminar honeycomb absorber
Inventor: WIRT LESLIE SPENCER
IPC: G10K11/172
Filed: 1975-02-07
Abstract: The panel contains a honeycomb of cells formed by partitions (2, 3) a black plate (1) of metal, plastic or ceramic etc. and a front plate (11) of perforated metal, porous paper or porous ceramic. Into each cell extends a horn (5) which may be of exponential hyperbolic or conical, form and which need not be a surface of revolution. The horn is in acoustic communication with the rest of the cell, either through a gap between the end of the horn and the rear of the cell of through an opening in the side of the horn. For some (lower) frequencies the horms and cells together function as Helmholtz resonators damped by the face sheet (11) and at other (higher) frequencies the honeycomb of cells functions as a laminar absorber.
Patent FR-2281455-A1 (FR)
Title: Decomposition of wood - for production of cellulosic fibre suspensions e.g.for papermaking
Inventor: PRADT LOUIS ATWATER
IPC: D21C3/00
Filed: 1975-08-05
Abstract: Decomposition of wood or other cellulosic raw material with an oxidising agent by carrying out the pulp production reaction in a row of reactors used in series, the material being at least partly cooled between the reactors, in order to carry away heat produced by the reaction. Avoids the problems arising in known methods, of lover and under cooking' due to variable residence time, and of either too high or too low a reaction temperature.
Patent FR-2326608-A1 (FR)
Title: Tubular component assembly system - has taper plug which fits into split end and is driven in drilled hole
IPC: F16B17/00
Filed: 1975-09-30
Abstract: The system secures two tubular components together, the one being of larger section than the other. A hole (4) is drilled in the face of the larger-section component (2) of the same diameter as the smaller-section (1). The end of the latter is then split (3) so as to allow it to expand, and a plug (5), tapered for most of its length, is fitted in the split end. The larger end of the plug has a diameter which is equal to the diameter of the hole (4), and plug and component are fitted in. It is then home until it comes into contact with the wall of the larger-section component opposite the hole.
Patent FR-2328597-A1 (FR)
Title: Braking system for oleopneumatically suspended vehicle - has double circuit for front and rear with pressure time delay for stability
IPC: B60T13/14
Filed: 1975-10-23
Abstract: The double circuit brake installation is for a vehicle with oleopneumatic suspension. There is a fluid dispenser controlling the liquid pressure of the hydraulic suspension which feeds on circuit for the rear wheels and a second circuit for the front wheels. There is a pressure-limiting valve (20) with a plunger which moves under pressure in two chambers (23,22) joined to the second brake circuit (2) and suspension circuit and first circuit, controlled by a limiting valve (12). There is a limiter (R) to retard pressure build up in the second circuit chamber. This consists of a timer with a gas cushion. The delay in applying pressure gives good vehicle stability during braking.
Patent FR-2328147-A1 (FR)
Title: Control valve for double acting jacks - has sliding balls actuated by pressure operated membranes and seating on ring seals
IPC: F16K31/42
Filed: 1975-10-17
Abstract: The valve consists of two balls which can be displaced between two extreme positions by pistons actuated by flexible membranes. In either extreme position, each ball is pressed on to a ring seal. Each ball and associated seals form three chambers, one between the seals and the others external to the seals. One chamber of each valve is connected to the pressure source and the other to the discharge duct. A solenoid operated servo valve controls pressure on one membrane and, by virtue of interconnections between the valves, admission of working fluid to drive the jack on one direction. Interruption of the supply to the membrane and discharge of the fluid through the servo valve, drives the jack the other way.
Patent FR-2294394-A1 (FR)
IPC: F28F9/00
Filed: 1975-12-09
Abstract: Feedwater preheater for heating feedwater in the form of steam turbine condensate by means of condensing extraction steam from a turbine, includes a casing, a fixed tube plate and a movable tube plate disposed opposite one another in the casing, feedwater inlet and outlet chambers located adjacent the fixed tube plate, a feedwater reversing chamber disposed in the casing and partly defined by the movable tube plate, a first group of feedwater conducting tubes connected at one end thereof through the fixed tube plate to the feedwater inlet chamber and at the other end through the movable tube plate to the reversing chamber, a second group of tubes connected at one end thereof through the movable tube plate to the reversing chamber and at the other end thereof through the fixed tube plate to the feedwater outlet chamber, a steam vessel disposed in the casing and surrounding the second group of tubes, the first group of tubes, on the one hand, and the second group of tubes, on the other hand, being mutually spaced apart a distance so great that stresses produced by varying thermal expansion of the tubes which, in turn, produce a tipping movement and deformation of the movable tube plate do not exceed a permissible value.
Patent FR-2334735-A1 (FR)
Title: Compsn. for cleaning glass and metal - contg. ethanol, turpentine, chalk, alkali soln. and water
IPC: C11D7/26
Filed: 1975-12-10
Abstract: Cleaning compsn. for glass, mirrors, silver, chrome and copper comprises (per 1.):- ethanol 400 cl.f turpentine 100 cl.; chalk 150 cg.; aq. alkali (NH4OH or other alkali) 50 cl.; H2O 300 cl.
Patent FR-2337886-A1 (FR)
Title: Tachometric converter control circuit - employs integrator to provide tachometric converter current from alternator remanent voltage
IPC: G01P3/48
Filed: 1976-01-06
Abstract: In an electrical generating set with a thermal motor a frequency to voltage or current tachometric convertor is used for control purposes. A convertor circuit enables a tachometric convertor to utilise the remanent voltage from an alternator. The voltage (U1) from an alternator is applied to a step down transformer (1) to reduce dissipation in a resister (2) in series with an integrator (3, 4). Back to back diodes (10) limit the amplifier input. The integrator output (7) provides an alternating voltage output (U2) whose frequency is between certain limits and which is applied via a zener diode (11) to a transistor (12). The transistor controls conduction of current in the lines (L1, L2) to a tachometric converter.
Patent FR-2304651-A1 (FR)
Title: Fibre-reactive dyes - contg two diamino monofluoro s-triazinyl gps in the reactive gp (BE200976)
IPC: C09B62/04
Filed: 1976-03-18
Abstract: Fibre-reactive dyes of formula: (in which A1 is a sulpho-gp. contg. chromophore of anthraquinone, azo, phthalocyanine or nitro-aryl series; A2 is H or an organic gp.; R1 R2 R3 and R4 are H or alkyl; B is alkylene or arylene), are used for dyeing and printing of silk, leather, wool, polyamides and polyurethanes, pref. cellulosic fibres, esp. cotton. Esp. suitable for exhaust dyeing from dilute, alkaline bath opt. contg. salts. Dyes have higher reactivity, allowing use of lower temps. or shorter fixing times than with comparable known dyes, good affinity and bond stability between dye and fibre, with good removal by washing from unfixed areas. Give storng colours with good light- and wet-fastness.
Patent FR-2352190-A1 (FR)
Title: Pulsating exhaust gas fluctuation smoothing device - comprises pipe with helix internal form with special dimensional ratios
IPC: F15D1/02
Filed: 1976-05-18
Abstract: The device for smoothing pulsating exhaust gas exit pressures fluctuations is a helical length of pipe in the exhaust line, N turns long where N=L/(2 pi (R-r) L=distance between successive gas pulse fronts at entry to the smoothing length R, r=pipe helix external, internal radii respectively. R/r should be between 2 and 5, and the dimension perpendicular to the radii should be between 0.5 and 2 x (R-r) to avoid undue surface friction losses, but pipe cross-section need not be circular. Where pressure pulses from several separate sources require smoothing the distances between sources and smoothing length entry should pref. be equal; up to 20% extra helix turns may be added to compensate for variations.
Patent FR-2352869-A1 (FR)
Title: Plastic stopping compsn. for stopping holes etc. in mines - comprises clay block sheathed in plastic envelope
IPC: E21F17/103
Filed: 1976-05-26
Abstract: Stopping compsn. of plastic consistency for stopping holes, lining pit roofs, for closing off mine workings, etc. and for stopping openings around blasting explosions in mines, consists of a malleable material placed in an impermeable envelope under vacuum. The malleable material is esp. a plastic clay and the envelope is a heat shrinkable plastic. The clay is prepd. in the form of a single block, esp. a round cylinder, and the cylinders are arranged in layers in the hole to be stopped. Larger holes can be filled with larger volume masses e.g. in the form of a cushion or a mattress. It is unnecessary to transport concrete blocks into mines to close off old workings and cement them together. Clay bodies adhere to the sides of the openings preventing escape of gas, or recoil of explosive in blasting. They stick to loose rock when used for stopping or lining, preventing dangerous rock or stone falls. The clay blocks are easy to prepare and handle.