baber/WOPTO huggingface dataset:
Patent FR-2034448-A1 (FR)
Title: Benzoxazocine derivs cns active
IPC: C07D211/70
Filed: 1970-03-27
Abstract: Method for the prepn. of 3,4,5,6-tetrahydro-2,6-methano-2H-1,5-benzoxazocine derivs. of the general formula (I) and acid addn. salts and N-oxides of (I) R1 = hydrogen or alkyl (1-6C) R2 = hydrogen, opt. substd. hydrocarbon (1 to 24C) or acyl R3 = hydrogen, opt. substd. aliphatic or arylaliphatic hydrocarbon (1 to 24C) X = hydrogen or hydroxy, or an ester or ether deriv. of hydroxy The cpds. have C.N.S. activity esp. analgetic activity and have activity on the heart- and blood-fat system. A soln. of 0.4 g. of a mixture of 2-(1,4-dimethyl-1,2,5,6-tetrahydro-2-pyridinyl)-resorcinol and 2-(1,4-dimethyl-1,2,3,6-tetrahydro-2-pyridinyl)-resorcinol was boiled for 1 hr. on a water bath with 10 ml. conc. hydrochloric acid. The soln. was cooled and neutralised to pH 7 with 10% NaOH soln. The mixture was extracted with chloroform (2 X 100 ml) and the extract washed with satd. NaCl soln. and after drying, evaporated to dryness. The residual brown gum was chromatographed on a column of silica gel (20 g.) eluting with chloroform, chloroform/methanol and finally with methanol, the methanol eluate on evaporation yielding 0.18 g. 2,5-dimethyl-3,4,5,6-tetrahydro-2,6-methano-2H-1,5-benzoxazocin -7-ol, as a dark brown foam.
Patent FR-2043848-A1 (FR)
Title: Controlled atmosphere gas production for - heat treatment furnace
IPC: C21D1/76
Filed: 1970-05-29
Abstract: Natural gas or similar fuel is mixed with air for complete combustion after which a secondary fuel is mixed with the gases of combustion to become dissociated and provide a supply of protective gas which will prevent surface finish deterioration of the heat-treated product. The preferred burner unit comprises a ceramic grill to promote complete mixing of primary fuel and air, and a catalyst to prevent precipitation of carbon and to compensate the reaction for loss of temperature incurred in dissocation of the secondary fuel. The burner is compact, inexpensive and suitable for mounting directly on a furnace, thereby eliminating separate coolers and purifiers.
Patent FR-2056965-A1 (FR)
Title: Forming si oxide regions on si semiconductor - substrate
IPC: H01L21/32
Filed: 1970-07-31
Abstract: Masking film is produced at some locations on a monocrystalline Si body, and prevents oxidation of the subjacent portions of the body. It can be etched by a substance which has little or no effect on SiO2. The non-covered parts are then oxidized. Pref. the film is of e.g. Si nitride and Al2O3, and is etched with hot phosphoric acid.
Patent FR-2166308-A1 (FR)
Title: Reagent measuring appts - for use by unskilled operatives for repetitive additions
IPC: B01L3/02
Filed: 1972-01-07
Abstract: Measuring device, which may be constructed from standard laboratory appts. has a measuring tube, with a valve in its bottom neck operated by a rod passing out from the top, through an inner tube, the position of which may be adjusted, and which is held in place by a screw cap. The measuring tube is fed through a capillary, (or swan-neck), sidearm, up to the bottom of the inner tube, above which point an air-lock develops. The feed is from a constant level reservoir; via a second valve, coupled to the first valve by a swinging arm, restrained elastically so that, e.g. when a flask is brought up to the nozzle of the measuring tube, a lever is operated to open first valve, and close second valve, thus dispersing an accurately measured quantity.
Patent FR-2188040-A1 (FR)
Title: Rotary drill bit - with readily replaceable cutter bits
IPC: E21B10/42
Filed: 1972-06-09
Abstract: Rotary drill bit for carrying out drilling operations in the ground and capable of being driven so that it rotates round its longitudinal axis, comprising (a) a body, one end of which has a series of radial grooves and a diametrical section opening into the end face and extended up to the rotation axis, (b) a series of L - shaped blades enclosed in the grooves, each with a hole between its ends, (c) a number of transverse holes in the body each intersecting a groove at a point displaced axially with respect to the hole in the corresponding blade in that groove, (d) an elastic element enclosed in each of the transverse holes in the body and in the hole in the blade, which it pushes elastically and simultaneously parallel to the longitudinal axis of the body and transversely thereto, in such a way that it is retained in the groove and held against the body, the blades extending radially beyond the body to collectively delimit calibrating surfaces for the hole drilled by the drill bit and extending axially beyond the corresponding end of the body for which it constitutes the front drilling cutters. More especially the elastic element is a rolled spring steel tubular split pin.
Patent FR-2198995-A1 (FR)
Title: Extraction of sugar from crushed pulverized cane - by diffusion and leaching with liquid flowing down through floating beds compressed by immersion
IPC: C13B10/10
Filed: 1972-09-13
Abstract: A floating mass of crushed pulverized sugar cane, is displaced through a series of tanks, over and under consecutive bafles, and is compressed against tank tops by immersion; being leached by countercurrent flow of liquid, which is pumped to tops of tanks from reservoirs fed under hydrostatic pressure from tank bottoms. A pressure differential is maintained between adjacent tanks, to prevent recycling of solids, by a difference in heights of appropriate header reservoirs. Water is fed to last tank, from which usd cane is displaced via a counter weighted flap valve, pref. under control of density of product syrup, which is pumped out from base of 3rd tank. Neutralizing and purifying agents are added, pref. with syrup expressed from cane, under pH control. Process is economical of power, and adapted to automatic control. The tanks may be mounted one above the other in a vertical column; and may be rectangular, or cylindrical with radial baffles.
Patent FR-2163659-A1 (FR)
Title: Thermosetting acrylic moulding powder - comprising glycidyl methacrylate copolymer and poly-anhydride curing agent
IPC: C08G59/00
Filed: 1972-12-15
Abstract: Thermosetting moulding powder for compression or injection moulding comprising (a) a copolymer of av. mol wt 1500-16000 and softening point >25 degrees C contg 15-40 wt.% glycidyl methacrylate 0-30 wt.% (meth)acrylonitrile and the remainder methyl methacrylate (part of the copolymer being opt. replaced by a diepoxide) and (b) a polyanhydride of formula CO(CHX)nCOOCO(CHX)nCOO n in which X is H, CH3, C2H5 or halogen) e.g. polyadipic or polysebasic anhydride) n is 4-10, such that compsn contains 0.5-1.5 anhydride gp per epoxy gp.
Patent FR-2220416-A1 (FR)
Title: Liquid movement prevention for marine tankers - uses pumps to swirl contents of tanks around within tanks
IPC: B63B25/24
Filed: 1973-03-05
Abstract: When the tanks of a vessel are not completely filled, swaying of the vessel due to wave movement can cause dangerous movement of the contents of the tanks, partic. when they contain liquefied gas at low temps. The contents are therefore caused to rotate by a pump immersed in the liq. or by an external pump with suction and discharge lines terminating inside the tank, the resulting swirling imparting stability to the liquefied gas.
Patent FR-2224269-A1 (FR)
Title: Drying moulding materials in bulk - by recirculating hot air through the material and alternately regenerated drying towers
IPC: B29B13/06
Filed: 1973-04-03
Abstract: Moulding materials in a bulk storage vessel or hopper are purged by a stream of heated a r to produce a damp exhaust which is continuously diluted with fresh, relatively dry, air and partitioned by a three way valve between parallel towers incorporating preheaters and packed with dessicant. Each tower in turn carries the main recycle air stream or a purge stream which balances the air intake and also regenerates the dessicant bed. Pref. switching of the towers from recycle to purge streams is effected automatically in response to signals from a moisture analyser, e.g. in the recycle line. Used for drying damp or hygroscopic moulding materials just prior to feeding one or more moulding machines, extruders, etc. Process is more rapid than static oven drying, less expensive than vacuum drying and more efficient than in situ hopper drying with total air exhaust.
Patent FR-2232742-A1 (FR)
Title: Gas heated water tube hot water boiler - has hood directing combustion gases round sides of water tubes
IPC: F24H1/40
Filed: 1973-06-08
Abstract: The boiler is rectangular with firebrick walls and has an opening (5) in the front for a burner. The sides and back of the rectangular combustion chamber are formed by horizontal (8) and vertical (9) U tubes running between headers (10, 11). A hood (21) having a top, back and two sides surrounds the U tubes. Combustion gases flow on the inside of the U tubes and through the gaps between them. The sides of the hood then force the gases to flow down to the bottom of the boiler on the outer sides of the tubes before rising to the smoke box. The additional downward passage on the outside of the tubes increases heat transfer.
Patent FR-2237723-A1 (FR)
Title: Welding fluxes for high melting-point metals - contain barium- calcium- and aluminium- fluorides, used in welding titanium
IPC: B23K35/36
Filed: 1973-07-19
Abstract: The flux, which is also suitable for welding non-ferrous metals, contains CaF2 and AlF3, and 3-7 wt.% of barium fluoride with 83-92 wt.% CaF2 and 5-10 wt.% AlF3. The pref. ratio of BaF2:AlF3 is 0.6-4:1. The addn. of BaF2 makes the slag easy to remove and permits increased welding speeds. In an example Ti sheet are welded using a flux with compsn. (all wt.%): 88 CaF2, 5 AlF3, 7 BaF2. The flux can be used in welding Mo, Nb, and Cu.
Patent FR-2243719-A1 (FR)
Title: Gas or liquid filter elements - comprising mechanically knitted fibre mat strengthened by resin bonding
IPC: B01D39/14
Filed: 1973-09-18
Abstract: Non-woven matl. is used as a filter material for liquids or gases as a replacement for conventional woven filter materials, or for filter materials incorporating supporting cloths, is cheaper due to the lack of weaving. Pore size distribution is such that freedom from preferential flow passages in the material is obtd. The filter material consists of a fibre mat of natural or synthetic material which is knitted mechanically in a manner previously used for silk in which fibre bundles are partially looped around adjacent bundles and partially cross-linked at random to other bundles. This mat is treated with a bonding agent such as resin applied by a heat treatment process opt. cured at high temp.
Patent FR-2245828-A1 (FR)
Title: Biological cesspit for domestic sewage - has segmental inner tank rotatable inside outer tank for periodical discharge
IPC: C02F3/20
Filed: 1973-10-01
Abstract: A cesspit for domestic sewage is a stationary cylindrical tank with the rotatable inner tank which is divided into four segments. Each segment has a clearance manhole near the bottom which can be aligned by rotation of the inner tank with a clearance manhole in the outer tank. A central tube, passing to the bottom of the inner tank, where perforated branch tubes protrude upward at an angle, is used for the admission of air. This plant works continuously and can be expanded for use by several persons by adding sections to the top.
Patent FR-2258802-A1 (FR)
Title: Automatic cutting machine for carrots - with chain conveyor and rotary and stationary saws
IPC: A23N15/04
Filed: 1974-01-29
Abstract: Cutting machine for carrots, or other vegetables of a similar shape, comprises a frame with a base carrying uprights which support a conveyor belt. This consists of two parallel chains with link attachments which receive and hold the vegetables to be treated. These are introduced into the rotating drum; blades lift the carrots and they fall on the conveyor passing through the drum. Some come to rest on the attachments; they pass under rotary brushes and meet a current of water from the pump. The carrots, now properly aligned, are cut into sections by the saw; ends not previously cut are dealt with a cutting post. Machine works automatically and gives a high yield; it is esp. suitable for the considerable quantities required in the food ind.
Patent FR-2223586-A1 (FR)
Title: Fixing cross reinforcement to panel - using filling and connecting pieces placed in panel incisions
IPC: E04C2/38
Filed: 1974-03-06
Abstract: Cross reinforcement is fixed to the edge of a panel, e.G. a polymethyl methacrylate door or wall panel, by (a) making incisios with reduced inlet openings in te edges of the panel; making holes in the wall of the hollow reinforcement, the holes being situated directly n front of the incisions in the panel; (C) placing a filler piece, esp. a hollow piece of pressed fibres or nylon, in each incision to extend over a part of its depth; and (d) placing a connecting piece e.g. a split pin, between the cross wall of the reinforcement and the filler piece.
Patent FR-2230386-A1 (FR)
Title: Two wheeled toy with self stabilising motion - uses flywheel geared to rear wheel, front wheel axis is offset to rear
IPC: A63H17/21
Filed: 1974-04-23
Abstract: A two wheeled toy in the shape of a motorcycle and which is kept upright in motion by the inertia effect of a flywheel geared to the rear wheel. The chassis (1) is a hollow box section enclosing the flywheel (2). The rear wheel (7) has fixed to it a toothed gear (6) which is in mesh with a reduction gear train itself connected to the flywheel. The front fork (5) has the axis (4) of the front wheel offset to the rear to improve the rolling action of the toy.
Patent FR-2272059-A1 (FR)
Title: Alpha, beta, beta-trifluorostyrene prepn - from chlorinated and fluorinated 2-phenylpropan-2-ol(s) and alkali
IPC: C07C51/58
Filed: 1974-05-24
Abstract: Process for the prepn. of alpha,beta,beta-trifluorostyrene comprises (1) reacting chlorinated and fluorinated 2-phenyl-propan-2-ol(s) of formula CF2Cl-C(OH)(C6H5)-CFnCl3-n (where n = 1, 2 or 3) with an alkali and solvent at up to reflux, (b) isolating the solid residue and (c) condensing the alpha,beta,beta-trifluorostyrene from dry distillation. Esp. for ion exchange resins.
Patent FR-2275078-A1 (FR)
Title: Two-directional optical telecommunication device - comprising, sepd. by fibre optics, diodes which alternately emit and receive light
Inventor: CREMOUX BAUDOUIN DE
IPC: H04B10/43
Filed: 1974-06-14
Abstract: Two directional optical system of telecommunication comprising intermediate and terminal stations connected by fibre optics, has at each station a unique semiconductor device used alternately to emit and receive luminous rays in the same frequency band. The semiconductor device comprises (a) an electroluminescent diode and a photodetecting diode superposed and integrated on the same substrate the electroluminescent junction being crossed by the rays absorbed by the photodetector zone, or (b) a single diode having a lightly doped layer emitting rays under stimulation when it is directly polarised and absorbing rays of the same wavelength when it is inversely polarised, while a fibre optic is directly coupled with the lightly doped layer.
Patent FR-2244687-A1 (FR)
Title: Pneumatic tube transport system branch junction - has pivoting switching tube telescoping into branch tube
IPC: B65G51/24
Filed: 1974-09-25
Abstract: A 'direction switch' at the junction between the main and branch lines of a pneumatic cartridge transport system normally consists of a single pivoting tube. The invention is concerned with improving the sealing of this pivoting tube to the adjacent openings in the branch and main lines. EAch switch consists of a) two tubes, one of which can be slid axially inside the other, and b) a forked lever (remotely operated by gears or chain drive) for pivoting the switch unit. The principle is that the two tubes telescope before the pivoting starts and slide back again only after the pivoting is completed.
Patent FR-2246155-A1 (FR)
Title: HF equip. unit has rear plate with HF connectors - and raised frame supporting screened screw-on units
IPC: H05K7/18
Filed: 1974-09-27
Abstract: The h.f. equipment unit has a framework attached to a rear plate. The framework away from the plate to enable rectangular component units to be screwed onto it by their front plates. Coaxial connectors (19, 20) are distributed over the rear plate and connect with similar connectors at the rear of the separate component units. Each component unit is electrically screened as are the coaxial connectors. A space is left at the bottom of the vertical plate for junction boxes or terminal blocks (12). Other types of connector may be mounted on the rear plate.
Patent FR-2292344-A1 (FR)
Title: Mounting accumulators in plastic housing - by placing plastic spacers in compartments before thermowelding cover
Inventor: JARREAU YVES
IPC: H01M50/169
Filed: 1974-11-19
Abstract: The mounting assembly, for accumulators, has a plastic housing with internal compartments for the accumulators and closed by a cover plate of thermo-fusible plastic. Before thermo-fusing takes place, a piece of plastic is inserted into each compartment. The piece of plastic has at least two orthogonal faces: the first rests on an accumulator and the second rests against one of the compartment walls for thermo-welding with the cover at the same time as the wall.
Patent FR-2316895-A1 (FR)
Title: Clasp for chain bracelet - has H bolt sliding in keyhole channel and pivoting in slot
IPC: A44C5/20
Filed: 1975-07-10
Abstract: The claps for jewellery chains constitutes an adapted chain link. The link has a lateral gap allowing the opposite end link to be inserted or withdrawn. The gap may be opened or closed by a sliding and pivoting bolt mechanism. Chain length can be adjusted by removing standard links. The clasp mechanism comprises of a rectangular block (2) which is built onto the end link (1). It has a blind channel (8, 13) of key-hole cross section. The bolt is formed by one leg (12) of an 'H' shaped hasp of which the other cylindrical leg (9) fits in the circular section (8) of the keyhole slot. a slot (14) in one of walls of the keyhole channel allows the bar (11) of the 'H deg. to pass and the bolt (12) to move on a circular path. The 'H' block is slid against a spring (10) to align the 'H' bar (11) with its escape slot (14).
Patent FR-2320404-A1 (FR)
Title: Jointing strips former for fresh concrete flags - is suspended on crossbeam supported on sliding rods with locking sleeves
IPC: E04F15/14
Filed: 1975-08-06
Abstract: The concrete flagstones are joined before the concrete sets, to eliminate cracking produced by shrinkage of the setting concrete. Joints are introduced either before pouring the concrete, or are impressed into freshly poured concrete. A tubular cross beam (1) is mounted over the mould with a vertical strip (2) suspended from it. A rectangular rod (4) slides in a sleeve (3) at each end, braced (6) obliquely to the crossbeam. A spring (11) coils around each rod below the sleeve, and rests on a shoulder (9). The jointing strip (2) can be lowered into the fresh concrete against the spring bias, and is locked in place.
Patent FR-2321345-A1 (FR)
Title: Polyethylene plug supports for bending metallic tubing - for forming tight bends without creasing
IPC: B21D9/15
Filed: 1975-08-19
Abstract: Supporting thin wall hollow metal profiles during bending is by inserting as a force-fit at the bend zone a plug of firm but pliable material, specifically of low density polyethylene. Method is used for bending tubing to make trolley chasis etc. without kinking or creasing the tubing when forming short radious bends. It is more reliable than packing the tube with sand and simpler than packing the tube with a hydraulic fluid. The plug should be at least as long as the bend zone and marginally greater than the interior dimensions of the profile, e.g. for rectangular profile tubing of bore dimensions 32.6 x 17.6 mm., the plug cross section was approx. 0.1mm. greater in each dimension.
Patent FR-2324475-A1 (FR)
Title: Non snaking type trailer drawgear - has two hydraulically damped telescopic arms with gas pressure and towbar
IPC: B60D1/32
Filed: 1975-09-16
Abstract: The non snaking type trailer drawgear has, between the towing vehicle and the tractor, two extra telescopic arms (1)(2). They are compression resistant and geometrically relative to the tow bar. The telescopic arms can lengthen freely but only shorten under a predetermined force. They have flexible return fittings and can slide on the tow bar. The flexibility is hydraulically obtained with an adjustable valve to alter the limiting compression force required to shorten the arm. Return action is given by gas under pressure by hydraulic action.
Patent FR-2287507-A1 (FR)
Title: Single cell protein culture from polysaccharides - with preliminary hydrolysis using phosphoric acid
IPC: C12N1/22
Filed: 1975-09-23
Abstract: In a process for cultivating single cell proteins on polysaccharides such as starch, cellulose etc. the latter are subjected, prior to the culture proper, to hydrolysis with such acids whose salts are in any case necessary for the culture. Process obviates the use HCl or enzymes for degrading the polysaccharides, which is too expensive or introduces excess Cl- ions into the substrate.
Patent FR-2327111-A1 (FR)
Title: Snow attachment for pneumatic tyres - has box section housing with sliding U-shaped grips and chain tensioner
Inventor: KARAGHEOZIAN ANDRE
IPC: B60C27/10
Filed: 1975-10-09
Abstract: The snow attachment for pneumatic tyres has a central cross made of box section steel (33). Sliding pieces (40) with a straight portion fit inside the box section and the curved ends fit over the tyre. A ridge on the outside surface of the flat section steel provides the grip. Two opposite gripping pieces are sprung inwards (42,43) to aid mounting. The two sets of adjacent grips are connected by a slack chain (54,58) and the two chains are joined diametrically by a turnbuckle tensioner. When the attachment has been loosely fitted the tension is applied to the chains, which pull the grips firmly against the tyre.
Patent FR-2327395-A1 (FR)
Title: Steam generator and gas turbine unit with gas water heater - has main line from water condensate outlet to preheater condensate inlet line
Inventor: PRUTKOVSKY E N
IPC: F01K23/06
Filed: 1975-10-10
Abstract: Unit comprises a gas and water low-pressure heat exchanger (6), a low-pressure recuperative pre-heater (20, 21) of which part (21) is connected by a condensate line (29) in parallel with the heat exchanger, and means to prevent boiling of the condensate in the heat exchanger comprising a main line (31) at one end connected with the pre-heated condensate outlet (29') from the heat exchanger. The other end of this main line is connected with the condensate inlet line (29) into the preheater section (20) upstream of the section (21) which is parallel to the heat exchanger. The main line (31) may contain a pump (26) for returning the pre-heated condensate via the heat exchanger and a control valve (27) downstream of the pump.
Patent FR-2289995-A1 (FR)
Title: Recording system for audio signals - using delta modulator to provide modulated pulse train supplied to recording head
IPC: G11B27/032
Filed: 1975-10-31
Abstract: The recording system, for an analogue audio signal, employs a delta modulator, to provide a delta modulated pulse train, representing the momentary variations in the value of the analogue signal, this pulse train being supplied to a recording head, for recording on a magnetic storage medium. The positive and negative variations in the value of the analogue signal are represented by the appearance or absence of a pulse in the pulse train. The delta modulator has an amplifier stage (10) for amplifying the analogue input, with the amplifier output connected to one input of a comparator (11). The other input of the comparator (11) is supplied from a clock source (14) via a compander (16) and integrator, and the comparator (11) supplies a logic signal for a gating circuit (13) supplying the pulses of the pulse train.