baber/WOPTO huggingface dataset:
Patent FR-1113918-A (FR)
IPC: C07C203/04
Filed: 1954-10-29
Granted: 1956-04-05
Abstract: A process for the continuous production of a propyl nitrate comprises keeping an aqueous reaction solution containing per 100 parts thereof between 30 and 45 parts nitric acid, at least 3 parts urea, and between 10 and 31.5 parts ammonium nitrate, all by weight, at a temperature between 105 DEG  and 112 DEG  C. (preferably 107-110 DEG C.) at atmospheric pressure, while maintaining this composition and the bulk by continuously introducing under the surface of the reaction solution nitric acid, the appropriate propyl alcohol, water and urea, at least the continuously added nitric acid and said propyl alcohol being introduced in separate streams, if desired already diluted with at least part of the continuously added water, at rates such that the molar ratio of added nitric acid to said propyl alcohol exceeds unity, and the continuously added urea being introduced in solution in at least one of the liquids streaming into the solution, continuously distilling away and condensing the resulting vapour mixture containing the propyl nitrate formed, continuously bleeding off a portion of the aqueous reaction solution of said composition, and separating the propyl nitrate rich layer of the condensate from the water rich layer.  The aqueous reaction solution may be progressively formed by heating a solution containing per 100 parts between 30 and 45 parts nitric acid and at least 9 parts urea or less than 9 parts but greater than 3 parts urea together with between 5.3 and 2.3 parts ammonium nitrate for each part of urea short of 9 parts.  Preferred nitric acid, urea and ammonium nitrate concentrations in the aqueous reaction solution are 45 per cent, 3 per cent and 22 per cent at 110 DEG  C.; 40 per cent, 3 per cent and 14 per cent at 110 DEG  C.; 40 per cent, 4 per cent and 18 per cent at 108 DEG  C.; 32 per cent, 6 per cent and 13 per cent at 105 DEG C.  The examples describe the preparation of n-propyl and isopropyl nitrate.  Specifications 379,312, 540,050, 696,489 and 743,141 are referred to.
Patent FR-1591849-A (FR)
IPC: B62B3/00
Filed: 1968-11-15
Granted: 1970-05-04
Abstract: 1,201,824. Hand trucks. CLARES (ENG.) Ltd. 15 Nov., 1968 [16 Nov., 1967], No. 52299/67. Heading B7B. [Also in Division B8] The base-frame of a trolley has at each corner a channel-shaped member 52 secured to a vertical face of the base frame to form abutments for the members 38, 39 of a detachable side wall the transverse member 29 of which rests on lugs L to prevent outward movement. The wall is locked in the vertical position by pivoted levers 60 which are moved down to overlie the parts 39. Other forms of detachable connection between the wall and frame are described and the trolley may be provided with a detachable handle.
Patent GB-1225602-A (GB)
IPC: F16K17/32
Filed: 1969-01-10
Abstract: 1,225,602. Valves. CODETEM COMPAGNIE POUR LE DEVELOPPEMENT DE TECHNIQUES MODERNES S.A.R.L. 10 Jan., 1969 [3 Dec., 1968], No. 1574/69. Heading F2V. _ A safety cut-off valve comprises a closure member 21 hinged at 28 and held open by a latch 19, 20 which is supported on a pin 18 joined to a ring 16 disposed in a sealed housing 9, carrying a second pin 13 located in a groove (12), Fig. 2 (not shown), of a spindle 6 connected to a diaphragm 2 actuated by the source of pressure to be controlled, and loaded in one direction by a spring 4, and in the opposite direction by a spring 5, so that, upon an increase or decrease in the pressure to be controlled, the latch is released and the valve closes. To open the valve, the closure member shaft 28 is rotated manually by means of a squared end (27), Fig. 3 (not shown), against the action of a spring 23. The upper part of the housing 9 is closed by a removable flange 8. A manually actuated bleed valve (31), Fig. 4 (not shown), is provided for relieving pressure in the casing. The ring 16 can be supported also by a third pin 24.
Patent GB-1226864-A (GB)
IPC: H01L25/03
Filed: 1968-04-02
Abstract: 1,226,864. Semi-conductor devices. SIEMENS A.G. 2 April, 1968 [3 April, 1967], No. 15835/68. Heading H1K. Two semi-conductor rectifiers are located in seats 11, 21 on respective first and second busbars 1, 2 while the free electrodes of each rectifier are connected by conductors 31 to a common terminal 52 supported by electrically insulating spacers 41, 42 between the bus-bars. Each rectifier may be individually housed as shown, and pressed into an aperture in the corresponding bus-bar, surrounded by the locating walls 11, 21 respectively. Soldering may also be used to attach the rectifiers to the bus-bars. In the embodiment shown three pairs of diode rectifiers are situated between a single pair of bus-bars 1, 2, but each pair of bus-bars may be associated with a single pair of devices, the bars being shaped so as to facilitate assembly of several such pairs of bars together.
Patent GB-1226935-A (GB)
IPC: H01R13/28
Filed: 1969-09-02
Abstract: 1,226,935. Two-part couplings. AMP Inc. 2 Sept., 1969 [23 Sept., 1968], No. 43396/69. Heading H2E. A hermaphroditic contact, 3 or 4, formed from sheet metal, has a channel-shaped middle section 5 with a crimping section 6 secured to conductor wire 7 at one end. At the other end the base of the channel is extended as a flat tab 8 having a chamfered leading end 9, and a width less than that of the channel 5. A square aperture 10 is cut in the channel base and the metal is pushed up to form a wire stop 11. The tab 8 has a channel-shaped indentation made along its length, forming a ridge 12, which has a convex leading end 13 and terminates short of the end 9 of the tab. The sides of the channel 5 are extended as arms 15, which have edges 16 spaced from the tab 8 by a distance less than the tab thickness, the edges 16 being inclined slightly from the channel 5 towards the tab. The arms 15 comprise convergent parts 17 which are bent towards the end of the tab 8, parallel parts 18, spaced apart by a distance-slightly less than the sides 14 of the ridge 12, and extending to a distance short of the ridge 12 and having flared extensions 19, and stiffening ribs 21, which are outwardly projecting indentations of triangular cross-section. The contact is inserted in a housing (1 or 2, Fig. 1, not shown), the arm extensions 19 being held in a recess (24) and a latch head (26) engaging in aperture 10 in the channel. On bringing the housings (1, 2) into mating condition, each tab 8 is engaged between the opposing tab and the arms 15, the ridge 12 being held between the arms, and a flange (23) of each housing engaging a shoulder (33) of the complementary housing.
Patent GB-1229652-A (GB)
IPC: C07D233/22
Filed: 1968-03-20
Abstract: 1,229,652. Ketones derived from imidazoline and tetrahydropyrimidine. AMERICAN HOME PRODUCTS CORP. 20 March, 1968, No. 13421/68. Heading C2C. The invention comprises compounds of formula and their pharmaceutically acceptable addition salts, wherein n is 2 or 3, R<SP>1</SP> is H (only when n is 3), alkyl, Ph, Ph-alkyl, Ph substituted by CF 3  or by 1 or 2 alkyl or alkoxy groups or halogen atoms, or by an amino group, or R<SP>1</SP> is thienyl, pyridyl, furyl, naphthyl or tetrahydro - 2 - naphthyl, R<SP>2</SP> and R<SP>3</SP> are H, halogen, alkoxy or alkyl, or one of them may be amino, and each of the said alkyl and alkoxy groups contains 1-6 C atoms. The imidazolinyl compounds may be prepared by: (a) hydrolysing a 1 - alkyl- or aryl - sulphonyl - 9b - R<SP>1</SP> - 1,2,3,9b - tetrahydro- 1H - imidazo[2,1 - a]isoindol - 5 - one (R<SP>1</SP> # H), or (b) oxidizing a 1 - R<SP>1</SP> - 1,2,3,4,5,6 - hexahydro - 2,5 - benzodiazocine (R<SP>1</SP> # H). The tetrahydropyrimidinyl compounds may be prepared by (a) oxidizing a 1 - R<SP>1</SP> - 2 - (3 - aminopropyl)isoindole, or (b) reacting a 2,3,4,6- tetrahydropyrimido[2,1 - a]isoindol - 6 - one with LiAlH 4  or LiR<SP>1</SP> (except when R<SP>1</SP> is H or aminophenyl). Intermediates.-1 - Phenylsulphonyl - 9bphenyl - 1,2,3,9b - tetrahydro - 1H - imidazo[2,1- a]isoindol - 5 - ones, in which the phenyl groups may be substituted, are prepared by reacting together the appropriate phenylsulphonyl chloride and 2 - (2 - aminoethyl) - 3 - hydroxy - 3- phenylphthalimidine; the latter is prepared by hydrolysis (e.g. with HCl or HBr) of the corresponding 9b - phenyl - 1,2,3,9b - tetrahydro - 1H- imidazo[2,1 a]isoindol - 5 - one. 2,3,4,6 - Tetrahydropyrimido[2,1 - a]isoindol - 6 - one is prepared by reacting phthalic anhydride with 1,3 diaminopropane. Therapeutic compositions contain the above compounds which, when n is 2, are antidepressants and anorexiants, and when n is 3, are antidepressants or diuretics, and may be administered orally or parenterally. Reference has been directed by the Comptroller to Specification 1,191,237.
Patent GB-1230385-A (GB)
IPC: A47B47/02
Filed: 1968-07-05
Abstract: 1,230,385. Shelving. P. ROUS. 5 July, 1968 [7 July, 1967], No. 32338/68. Heading A4B. A shelving structure includes spaced uprights 1 of hollow T-shaped cross-section interconnected by shelf bearers 10 provided at each end with hook-like lugs 11 which selectively engage apertures 6 in spaced walls 5a or 5b forming the leg of the T. Vertical edges 9 of internal walls 8 are spaced apart to receive vertical partitions. The bearer 10 has an L-shaped bottom edge ledge 13, 14 to support a downturned end flange of a shelf having a top surface flush with a top flange 15 on the bearer 10. The bearer 12 has a notch 16 which receives walls 5a, 8 of the upright 1. In a modification (Figs. 5, 6), the apertures (6a) are of inverted L-shape and the bearer (10a) has an horizontal lug (17) which engages the horizontal part of the L.
Patent GB-1230563-A (GB)
IPC: B29C48/67
Filed: 1967-05-04
Abstract: 1,230,563. Extrusion filters. BRITISH CELLOPHANE Ltd. 24 April, 1968 [4 May, 1967], No. 20860/67. Heading B5A. [Also in Divisions B1-B2] Thermoplastic polymer passes from a screw extruder (2) to a die (1), which shapes it into a sheet or thin-walled tube, through a filter 3 in which the filtering passages 19 are defined between smooth or serrated lands and the interior 7 of housing 6, the lands separating alternate inlet grooves 8 and outlet grooves 14 formed on the tapered surface of rotor 4. Alternatively, the filter may comprise a sieve or a single slot between a blade and housing. Most of the polymer flows from grooves 14 past surface 16, which provides a narrow annular gap to smooth the polymer free of any stranding imposed by passages 19, into annular groove 15 and out at 17, but a small fraction carries the retained solids and gel particles directly from grooves 8 through outlet passages 10, 12 to outlet 13, which is controlled by a valve. Periodically, rotor 4 is reciprocated arcuately sufficiently fast to reverse the flows through passages 19 on alternate sides of each groove 8, to displace solids from the passages. The rotor is heated by passing steam through passages 21, 20, 22. Rotor 4 is axially adjustable in housing 6 to vary the width of passages 19. Passages 19 formed by serrations, as shown, are 5/16 inch wide and 3/16 inch deep.
Patent GB-1230801-A (GB)
Inventor: ENDO K
IPC: H04B3/14
Filed: 1968-03-18
Abstract: 1,230,801. Variable equalizers. FUJITSU Ltd. 18 March, 1968 [16 March, 1967; 18 April, 1967], No. 13078/68. Heading H3U. A variable equalizer comprises a plurality of two-part networks connected as shown, Fig. 1, between an input 1 and output 2, the networks having respective transfer coefficients x, z1, z2, y, a.k. a is frequency dependent and k is not frequency dependent but may be varied; also, zl.z2 = 2xy. The network having transfer coefficient y serves as a feedback loop, the current flow being as shown in Fig. 2. The two-part networks may include amplifiers. A cosine equalizer, Fig. 3, based on the circuit of Fig. 1, includes four hybrid transformers H. In a modification. Fig. 7, the network having transfer coefficient α.k is replaced by a number of shunt networks # 1 g 1  &c. where # 1  &c. is frequency dependent and g 1  &c. is not frequency dependent but may be varied. The underlying synthesis is described. The attenuation characteristics are given in Figs. 5, 8 (not shown).
Patent GB-1230908-A (GB)
IPC: C07D241/20
Filed: 1969-08-18
Abstract: 1,230,908. 2,3,5 - Triamino - 6 - chloropyrazines; 5 - amino - 6 - chloro - 1H - imidazo [4,5-b]pyrazin-2-ones. MERCK & CO. Inc. 18 Aug., 1969 [22 Aug., 1968], No. 41165/69. Heading C2C. [Also in Division A5] Novel 2,3,5-triamino-6-chloropyrazines of the general formula wherein R and X 1  are each a hydrogen atom or a C 1-5  alkyl group and X 2  is a hydrogen atom or a C 1-5  alkyl, C 1-5  alkoxy-C 1-5  alkyl, monocyclic aryl, halo-monocyclic aryl, pyridyl or di-C 1-5  alkyl-amino-C 1-5  alkyl group or a C 1-5  alkyl group having an N-attached saturated 5- or 6- membered heterocyclic substituent which is formed by a bivalent 4- or 5-membered chain of methylene groups optionally interrupted by an imino or C 1-5  alkyl imino group or an oxygen atom, are prepared by reduction of a 2-nitro-3,5- diamino-6-chloropyrazine of the general formula and may be converted to 5-amino-6-chloro-1H- imidazo - (4,5-b] - pyrazin - 2 - ones of the general formula by heating in the presence of a di-alkylimino carbonate or di-alkylcarbonate, carbamoyl chloride or bromide, an N-alkylcarbamoyl chloride or bromide, an N,N-di-alkylcarbamoyl chloride or bromide, phosgene, carbonyl dibromide, an alkali metal cyanate, urea, an alkylurea or an alkyl haloformate. 2 - Nitro - 3,5 - diamino - 6 - chloropyrazines of the second general formula above are prepared by concomitant decarboxylation and nitration of a 3,5-diamino-6-chloropyrazinoic acid of the general formula or by decarboxylation of the said pyrazinoic acid, followed by nitration of the resulting 3,5- diamino-6-chloropyrazine of the general formula 3,5 - Diamino - 6 - chloropyrazinoic acids of the fourth general formula above are prepared by reaction of a methyl 3-amino-5,6-dichloropyrazinoate of the general formula with an amine of the general formula and alkaline hydrolysis of the resulting methyl 3,5 - diamino - 6 - chloropyrazinoate of the general formula
Patent GB-1232390-A (GB)
IPC: F16T1/12
Filed: 1967-09-14
Abstract: 1,232,390. Saliva ejectors. F. G. RUDLING (ENGS.) Ltd. 12 Dec., 1968 [14 Sept., 1967], No. 42051/67. Heading A5R. [Also in Division F4] A device for draining away unwanted liquid from a source, e.g. saliva from a dental patient's mouth, comprises a separator chamber A having an inlet O connected to the source and an outlet P connected to a suction pump, a discharge valve K and a diaphragm C connected to the stem H of the valve, the diaphragm being exposed to the pressure in the chamber and arranged to open valve K when said pressure rises due to the pump being stopped. If excess liquid accumulates due to prolonged pump operation, a float valve Q, Q' closes inlet P to effect discharge. Diaphragm C is held between two apertures dished members B, D and is biassed in the valve opening direction by spring E.
Patent GB-1234427-A (GB)
IPC: G01C7/06
Filed: 1968-11-04
Abstract: 1,234,427. Measuring profiles photoelectrically; recording apparatus. ATLAS COPCO AB. Nov. 4, 1968 [Nov. 3, 1967] No.52204/68. Headings G1A and G1J. [Also in Divisions F2 and H4] The cross-sectional profile of a tunnel is measured by a triangulation type range finder rotatable about the tunnel axis and means for recording the measured range at each angular position of the range finder. Light from a source 41, Fig. 1, is chopped and projected towards a point 10 on the tunnel wall whence it is reflected to receiver 6 comprising two photo-cells 44, 45. The differential output of cells 44, 45 drives a servomotor 15, which by means of a crank 16 and linkwork 17, 19, 22, 27, 24 and meshing gearwheels 28, 29, keeps the optical axes 12, 13 intersecting on the tunnel wall as the support table 3 rotates about its axis 1. The linkwork is so dimensioned that a pin 32 moves along a path perpendicular to the baseline 5, 7 proportionally to the measured and a recording pen attached to pin 32 traces out the tunnel profile on a stationary chart. If the sum of the outputs of cells 44, 45 falls below a pre-set level, a relay drops out to stop or slow rotation of table 3 and the servomotor 15 is made to search for the tunnel wall. Sonic or ultrasonic radiation may be used instead of light.
Patent GB-1239645-A (GB)
IPC: C01F5/10
Filed: 1968-09-18
Abstract: 1,239,645. Magnesium oxide. NATIONAL LEAD CO. 18 Sept., 1968 [18 Sept., 1967], No. 44369/68. Heading C1A. A method of obtaining high purity magnesium oxide from a brine containing magnesium, chloride and sulphate ions comprises adjusting the chloride ion content of the brine by adding thereto an alkali metal chloride in an amount sufficient with the chloride ion already present to provide at least a stoichiometric equivalent of chloride ion relative to the magnesium ion concentration, heating the brine in the presence of steam at a temperature in the range from 500 to 750 C. for a time sufficient to produce hydrogen chloride and a calcinate comprising magnesium oxide and water-soluble sulphates, washing the calcinate with water to dissolve the sulphates and separating the magnesium oxide from the dissolved sulphates. Before the washing there may be added to the calcinate (suitably finely ground, and in the form of a slurry) additional alkali metal chloride and the mixture is then heated at 500-750 C. to produce further hydrogen chloride and a calcinate which is then washed to dissolve the sulphates which are recovered. The separated magnesium oxide may be reacted with hydrogen chloride. The brine used may be naturally occurring brine which has been evaporated in several stages to eliminate sodium chloride by precipitation until the principal salt in the brine is magnesium chloride. In an example (1) to a brine deficient in chloride equivalents relative to magnesium is added sodium chloride, to provide an excess of chloride ion. The mixture is roasted at 600- 700 C. while steam is injected. The resulting calcinate is ground, mixed with additional NaCl and reroasted. The second calcinate is agitated with water and the mixture filtered. The magnesium oxide filter cake is then reacted with hydrochloric acid.
Patent GB-1253047-A (GB)
IPC: H05K3/02
Filed: 1970-01-06
Abstract: 1,253,047. Drilling holes. INTERNATIONAL BUSINESS MACHINES CORP. 6 Jan., 1970 [14 Jan., 1969], No. 578/70. Heading B3C. [Also in Division C7] A process for drilling holes in a board having a conductive surface layer (e.g. a printed circuit panel) so that burrs, at the exit end of the holes, are eliminated, comprises immersing the board in an organic polymeric liquid composition, electrophoretically depositing a coating of the polymer in said liquid on the conductive surface, preferably of at least 0À0005 inch thickness, curing the coating to form a solid coating, drilling holes through the board with the solid coating at the exit end of the holes, and removing the solid coating. Before the polymer is coated on the conductive surface the board is cleaned, dipped in an acid bath to remove any oxide from the conductive surface layer, which is preferably a metal foil such as copper, rinsed and dried, and after the coating is deposited is rinsed, baked (for curing), drilled, immersed in a stripping solution to soften the coating such that brushing will remove it, and then rinsed. The rinsing is usually carried out with deionized water. Drilling is carried out on a surface having clearance holes and wherein the support has semi-spherical projections at each clearance hole.
Patent GB-1253098-A (GB)
IPC: B05B13/04
Filed: 1969-03-26
Abstract: 1,253,098. Spraying apparatus. PROGRAMMED & REMOTE SYSTEMS CORP. 26 March, 1969, No. 15730/69. Heading B2L. [Also in Division G3] A dispensing device comprises an arm, mounted for two-axes movement on a frame, which is driven back and forth about one axis and selectively about the other and carries a material dispensing device, oriented during movement by a parallel linkage, controlled to dispense material in response to a predetermined signal. As shown, a spray painter assembly 10 is positioned adjacent a conveyor carrying car bodies that are moved past the spray painter assembly, which is actuated when a light beam to a photocell is interrupted by the presence of a car body. The spray gun 12, which is air operated and controlled through solenoid valves, is mounted on an arm assembly 13 that pivots about an axis 14 to move along on arc 15 so that the spray painting forms a W configuration on the moving car body. The arm assembly 13 comprises an arm 43 pivoted about an axis 44 by a yoke 45. The movement about the axis 44 causes the spray gun to follow the contour of a body on the conveyor and is effected through a swinging arm 66 by movement of a contour bar 52 against a stop 59 on slide-bars 57 under control of an air cylinder 54. The spray gun 13 is main-- tained perpendicular by a compensating linkage 96, 98. The motion of the linkages is derived from a cam 34 driven by a motor through a variable speed reducer and a gear box 24. The paint supply to the spray-gun is controlled automatically by a photo-electric system not shown responsive to markings on a drum driven through a chain and sprocket 154 from a jack-shaft driven by a chain and sprocket drive 156, 157 from the drive to cam 34. The drum bears strips of reflective tape each of which is aligned with a light-source and a photo-cell and in those places where the spray is not to be operated, is blacked out. Several tapes and associated photocells can be mounted for separate selectable programmes. In a modification a slave assembly mounted on the other side of the car conveyor is geared to move in synchronism with the master-programmed controlled spray painter assembly.
Patent GB-1257196-A (GB)
IPC: G06K7/016
Filed: 1968-12-20
Abstract: 1,257,196. Sensing records. ELEKTRONISCHE RECHENMASCHINEN WISSENSCHAFTLICHER INDUSTRIEBETRIEB KARL-MARX-STADT VEB. 20 Dec., 1968, No. 60773/68. Heading G4M. Timing pulses from a generator coupled to a card feeding roller are fed to a logic circuit, Fig. 2, which includes a bi-stable circuit 21 continuously switched between its two states by the timing pulses 13 and the inversion thereof, until a bi-stable circuit 25 is set by arrival of the leading edge of a card at a detector 5, a timing pulse train then being produced, at the original frequency but synchronized with the card position, from OR gate 26 via AND gate 23 or 24 depending on the final state of circuit 21. Gates 35, 27, Fig. 3, set a bi-stable circuit 28 to enable AND gate 29 when the card leading edge reaches detector 5, and this bi-stable should be reset by the arrival of the card leading edge at a detector 9 simultaneously with a count of 80 output 31 from a counter receiving the timing pulse output from the Fig. 2 circuit. If, for example due  to excessive slip, gate 32 is not enabled, the passage of the card trailing edge past a detector 7 causes a malfunction indicative output from gate 30. An output is also obtained from gate 30 if detector 7 is uncovered before pulse 31 occurs.