baber/WOPTO huggingface dataset:
Patent GB-824144-A (GB)
Title: An improved process for the carboxylation of phenols
Inventor: BARKLEY LLOYD BLAIR
IPC: C07C51/15
Filed: 1957-08-23
Abstract: The invention comprises a process for the production of an hydroxy aromatic carboxylic acid by the reaction between an alkali metal salt of a phenol and carbon dioxide, under anhydrous conditions, in which a mixture of a phenol, an alkali metal salt of a phenol and an aliphatic, substantially water-insoluble, alcohol having at least 5 carbon atoms in the molecule is heated at, at least 120 DEG  C. in the presence of carbon dioxide.  The amount of free phenol in the solution should exceed 0.01 mol. per mol. of alkali metal salt and may be 0.1 to 5 mols. per mol. of p  alkali metal salt.  Suitable alcohols are alkanols containing 5-20 carbon atoms in the molecule in a straight or branched chain, e.g. isomeric amyl alcohols and mixtures thereof, iso-octanol, nonanol-2, isodecanol, lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, and eicosyl alcohol.  The free phenol may be recovered in the aliphatic alcohol at the end of the reaction by adjusting the pH to about 5 and separating the organic layer.  The alkali metal phenate may be prepared by any suitable process, e.g. reaction of an alkali metal hydroxide with a phenol in solution in the alcohol to be used.  The phenol may be used in excess of the amount required to react with the alkali metal hydroxide or the excess phenol may be added after the metal phenate has been formed.  Water formed during the process may be removed before or after the addition of excess phenol.  A suitable solvent medium for use in the process of the invention is one containing 10-90% by volume of phenol and from 90-10% of the aliphatic alcohol both determined by the volume of that substance present in the liquid phase.  The preferred solution is one containing substantially one mol. of alkali metal phenate for each two mols of a phenol and such quantity of aliphatic alcohol as is substantially equal in volume to the volume of phenol.  The carboxylation may be carried out at temperatures between 120-200 DEG C. or higher, preferably at pressures greater than one atmosphere. Suitable monoor polyhydric phenols for use as starting materials are phenol, alkyl phenols, halogen-substituted phenols, aryl phenols, aralkyl substituted phenols, amino phenols, naphthols, long chain substituted phenols and nitrophenols.  Examples are given of the preparation of salicyclic acid, 6-methyl salicyclic acid, 2-methyl - 5 - isopropyl salicylic acid, 3 - methyl-6-isopropyl salicylic acid, and 3,5-dichlorosalicylic acid.
Patent GB-1315411-A (GB)
Title: Semiconductor devices
IPC: H01L29/08
Filed: 1970-06-02
Abstract: 1315411 Semi-conductor devices MITSUBISHI DENKI KK 2 June 1970 [2 June 1969] 26677/70 Heading H1K Parts 32 of one of the regions defining the cathode emitter junction 24 of a thyristor 10 are heavily doped so as to provide tunnel junctions 34 which effectively shunt portions of the junction 24. In a bidirectional device such a structure is provided at both ends thereof. In the Si device described P-type regions 14, 16 are formed by gaseous diffusion of Ga into an N-type body 12, and highly B-doped P + type regions 32 are diffused into the region 16. A uniformly P-doped epitaxial layer 18 is then deposited over the regions 32 and a central portion thereof is removed to expose the region 16 and to permit the application of a control electrode 30 thereto. Alternatively the layer 18 may be formed so as to have a dopant concentration decreasing from the surface towards the junction 24, the region 16 emerging centrally flush with the surface as shown. In a modification the junctions 34 are not tunnel junctions but both sides thereof are doped to a sufficient level (at least 5 Î 10<SP>8</SP> atoms/cm.<SP>3</SP>) to produce recombination centres in the depletion regions associated therewith so that at leakage current levels recombination current is significant while at higher current levels diffusion current predominates.
Patent GB-684723-A (GB)
Title: Improvements relating to the mounting of automatic fire arms
IPC: F41A9/54
Filed: 1950-11-02
Abstract: 684,723. Ordnance. VERWALTUNGSGES DER WERKZEUGMASCHINENFABRIK OERLIKON. Nov. 2, 1950 [Dec. 1, 1949], No. 26808/50. Classes 92(i) and 92(ii) Relates to guns of the kind in which no special training or elevating gear is provided. According to the invention a shoulder ring 13 for the gunner and also a sight are carried by links 8, 9, 10 forming sides of a parallelogram which can be locked in relation to the gun when adjusted to suit the gunner. The aiming arm 8 of the linkage pivots about a pin which is coaxial with the trunnions 6 and the arrangement is such that the axis 11 of the sight is always parallel to the axis of the barrels 4. In the construction shown the linkage 8, 9, 10 can be moved with respect to the gun cradle 3 by gearing 16 on the arm 8 engaging a toothed arm 23 on the cradle; a handwheel 17 drives the gearing and is fitted with a spring-controlled pin for locking the parts in the adjusted position. The cradle is arranged in a carrier 44 which can be tilted to compensate for the rolling movements of the ship on which the gun is mounted. The tilting is effected by means within a casing 49, such means being geared to an arc 52 on the carrier and being driven by a handwheel 50; the operator of the handwheel has a seat 53 and footrest 54. The weight of the cradle is counterbalanced by an equalizer 59 and that of the linkage 8, 9, 10 by means which include spiral springs which act upon a cam 61. A chain 60 passes from the cam to a casing 24 which is connected to the arm 8. In a modification, Figs. 1 to 5 (not shown), there is no tiltable carrier 44.
Patent GB-1502275-A (GB)
Title: Naphthoquinone derivatives
IPC: C07D295/116
Filed: 1975-05-01
Abstract: 1502275 Naphthoquinone derivatives IMPERIAL CHEMICAL INDUSTRIES Ltd 1 May 1975 [18 June 1974] 26924/74 Heading C2C Novel morpholinonaphthoquinone sulphonates of formula where R 1 , R 2  and R 3  are sulphonate groups or H, at least one being sulphonate, and when R 2  is sulphonate, both R 1  and R 3  are H; and wherein the morpholine ring (a) may carry C 1-4  and/or aryl substituents, are prepared by oxidizing a mixture of a 2-naphthol sulphonate and a morpholine with O 2  in the presence of a copper catalyst, e.g. cupric nitrate, chloride, sulphate, formate, acetate or stearate. The compounds of the above formula may be hydrolysed in aqueous acidic or alkaline solution, optionally in the presence of an alcohol to give 2 - hydroxy - 1,4 - naphthoquinone sulphonate of formula
Patent GB-1492091-A (GB)
Title: Magnetic tape recording and/or playback apparatus
IPC: G11B15/093
Filed: 1975-06-25
Abstract: 1492091 Automatic stop devices STARR SA 25 June 1975 [30 July 1974] 26926/75 Heading G5R A magnetic tape recording and/or playback apparatus has a tape drive to drive the tape 2 from a supply reel to a take-up reel, an autostop device responsive to reference marks 3 near the tape ends to stop the tape drive, and control means operating to allow and inhibit operation of the auto-stop device in dependence on the angular speeds of the tape reels. The apparatus may be a video tape machine using twin-reel magnetic tape cassettes. A detector 1 for sensing the reference marks 3 may be photoelectric, magnetic or respond to electrically conductive marks 3, and a reel speed detector may be magnetic (9), (10), Fig. 1 (not shown), electrical, mechanical, or photo-electric 20, 21, 22, giving one output pulse per revolution of the take-up 6 or supply reel. A first form, Fig. 1, passes the pulses from a take-up reel 6 speed sensor via an amplifier (11) to a retriggerable monostable (12) having a time constant R 1 , C 1  between the minimum T min , and maximum, T max , values of the inter-pulse period T of the speed detector, the output of circuit (12) going to a retriggerable monostable (13) having a time constant R 2 , C 2  greater than T max , whereby during forward tape drive for record/replay the output of circuit (13) is zero until T exceeds R 1 C 1 , circuit (13) then giving a constant output to open gate (14) to pass the stop detector output. By arranging gate (14) to be opened when circuit (13) output is zero, a supply reel, rather than a take-up reel, speed detector may be used. Another embodiment, Fig. 9 (not shown), has a stop-signal gate (45) opened wherever a level detector (44) senses that the output of a rotational speed detector (40) output pulse integrator (43) is less than (for a take-up reel speed detector) or greater than (for a supply reel speed detector) a preset value. In an alternative form (not shown), the stop signal gate is opened by a circuit comparing the outputs of supply and take-up reel speed detectors, the comparison being made by a pulse counter associated with the take-up reel speed detector and reset to zero by the supply reel speed detector output-or by passing the speed detector outputs to frequencyto -voltage converters the outputs of which are compared. A fourth form, Fig. 4, has an amplifier 23 shaping circuits 24, retriggerable monostable 25, exclusive-OR gate 26, integrator 27 and level detector 28. The period T m  of monostable 25 is set to be equal to the pulse width of take-up reel 6 speed detector 20, 21, 22 at the start of forward transport at normal speed, so that during normal forward tape transport the output of detector 28 is initially zero, then becomes a series of pulses and then a continuous non-zero output to open gate 14. Detector 28 also continuously opens gate 14 during fast forward and rewind.
Patent GB-1178867-A (GB)
Title: Lift Truck Mast Assembly
IPC: B66F9/08
Filed: 1967-06-12
Abstract: 1,178,867. Masted lift trucks. EATON YALE & TOWNE Inc. 12 June, 1967 [25 Nov., 1966], No. 26977/67. Heading B8H. A lift truck telescopic mast comprises a pair of fixed lower uprights 10, pairs of vertically movable uprights 13, 14, 15 and a lift ram 42 adjacent each upright 10 and having the upper end of its cylinder mounted at the upper end of the upright 10 so that the ram is suspended therefrom. The rams 42 are mounted on a U- shaped flange 12 connecting the upper ends of the fixed uprights 10 and the ram piston-rods 44 engage a bracing member 50 connecting the upper ends of the secondary uprights 13 to elevate the latter upon extension of the rams 42. The tertiary uprights 14 are elevated at twice the speed of the secondary uprights 13 by use of a pair of chains 55 which each have their ends anchored to the flange 12 and the bottom of the uprights 14, the therebetween pass over a sprocket 56 on the secondary uprights 13. The fourth pair of uprights 15, which carry a load carriage 21, are similarly elevated at twice the speed of the uprights 14. The load carriage 21 is elevated relative to the uprights 15, by a ram 24 and chains 32 which are anchored to the carriage 21 and to the bottom of the uprights 15, and are engaged intermediate their points by a pair of sprockets on the piston-rod of the ram 24. The carriage ram 24 and the lift rams 42 are both single acting and are operated by the same fluid system, the ram 24 operating at a lower pressure than the rams 42 so that the carriage 21 is elevated on the uprights 15 before the uprights are elevated relative to each other.
Patent GB-802167-A (GB)
Title: Rotary pendulum devices adapted to function as electromagnetic interrupters
Filed: 1955-09-21
Abstract: 802,167. Electromagnetic interrupters. KELLER, J, G. S. [trading as FILIGRANBAU STEFAN KELLER K.G.]. Sept. 21, 1955 [Sept. 22, 1954; Aug. 22, 1955], No. 27023/55. Class 38 (5). A device intended for the flashing of vehicle direction indicators and ensuring that the flashing times remain constant despite variations in the supply voltage comprises, Fig. 1, a flywheel 1 biased by a spring 6 to a position in which a peg 8 is arrested by a stop 9 and having on its axle 2 an armature 3 attracted by the leg 4 of a generally V-shaped electromagnet core 19. The magnet coil 5 is supplied through spring contacts 13, 14 held closed by the nose 12 of a forked lever 10 pivoted at 11. With the device in the position shown, energization of the coil 5 from a source 16 causes movement of the flywheel so that a stud 21 thereon engages lever arm 23 to tilt lever 10 upright and open contacts 13, 14. Thus coil 5 is de-energized and the flywheel returned by spring 6, the lever 10 remaining upright by the pressure of spring 13 against its end 24 until the stud 21 engages lever arm 22, this engagement taking place when the device has nearly reached the Fig. I position, whereupon the cycle recommences. In order that the amplitude of the flywheel oscillation may remain constant irrespective of voltage variations of the source 16, the other leg 26 of the core 19 is disposed behind the flywheel and makes a small angle with the leg 4. An oblique magnetic field thus traverses the flywheel between the legs 4, 26 and an 'eddy current braking impulse is applied to the flywheel each time a driving impulse is applied by the leg 4, the resultant impulse being constant despite voltage variations. A cam 27 on the axle 2 operates a spring contact 28 to control a flashing light 31. In modifications (Figs. 2-4, not shown), the lever 10 is not forked and is operated in its two directions by a pair of spaced studs on the flywheel. In another construction, Figs. 5, 6, contacts 46, 47 controlling the excitation of the coil 5 are operated by a permanent magnet 41 embodied in the flywheel 1. The movable contact 46 is carried by a lever 42 pivoted at 43 and having a wedgeshaped armature end 44. A spring 48 biases the lever 42 to hold the contact 46 open, and the contact can be closed only when the magnet 41 is opposite the wider armature part 50; however, once closed the contact 46 remains in that position until the magnet leaves the narrower part 49 in travelling in the reverse direction. Thus, the contacts are opened and closed at different angular positions of the flywheel. In modifications of Figs. 5, 6 (Figs. 8-14, 16, 17, not shown), the armature 3 is omitted and' the permanent magnet 4 and electromagnet 5 are arranged to produce the driving pulses by magnetic repulsion between their respective fields, the magnet 5 also providing the eddy current braking impulses and magnet 4 also operating the contacts 46, 47. The oscillation frequency may be adjusted by a knob for varying the tension of the spring 6.
Patent GB-363357-A (GB)
Title: Improvements in or relating to heat exchanging apparatus
IPC: F28D19/04
Filed: 1930-09-10
Abstract: 363,357. Regenerators. AKTIEBOLAGET LJUNGSTRÍMS ANGTURBIN, 10, Võstra Trõdgardsgatan, Stockholm. Sept. 10, 1930, No. 27061. Convention date, May 21. [Class 51 (i).] A heat transferring mass 6 through the same channels of which the heating and heated fluids, e.g. waste gases from a furnace and air to be heated, pass alternately comprises corrugated plates 16 having the corrugations running at an angle to the direction of flow 33 of the gases disposed on each ide of plates 17 having wider corrugations 20 unning in the direction of gas flow. The corrugations 20 are Z-shaped as shown or triangular and are deeper than those of the plates 16. Fig. 1 shows the plates packed in a frame 2 rotated by a motor 14 so that they pass alternately through channels 8, 9 for the waste gases and air respectively. Steam pipes 12, 13 are provided for cleaning the plates. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a form in which flat plates are disposed on each side of the plates 17. This subject-matter does not appear in the Specification as accepted.
Patent GB-1321152-A (GB)
Title: Devices for use with safety devices in oil wells
IPC: E21B23/10
Filed: 1971-04-19
Abstract: 1321152 Wells &c ENTREPRISE DE RECHERCHES ET D'ACTIVITES PETROLIERES (ELF) 19 April 1971 [17 April 1970] 27110/71 Heading E1F A tool carrier which can be pumped up and down a well has an elastomeric sleeve 2 around the carrier body 1, and a segmented metal ring 3 around the sleeve. The sleeve is expanded when the carrier is pumped, by pressure transmitted through openings 6, to expand the ring 3 against the bore wall. Longitudinally extending segments 4 also slide over the bore wall and are each mounted with one end abutting the ring 3 and the other end in a groove in a portion 13 of the body. Alternate segments 4 are shaped to fit the stepped profile 3a of the ring, and these segments also bridge the gaps between ring segments.
Patent GB-727334-A (GB)
Title: Improvements in and relating to the production of seamless tubes
Inventor: ZIMPEL ADOLF
IPC: B21C1/26
Filed: 1952-10-29
Abstract: 727,334. Making seamless tubes. STAHLUND ROHRENWERK REISHOLZ AKT.- GES. Oct. 29, 1952, No. 27195/52. Classes 83 (2) and 83 (4). In a method of producing long seamless tubes a hollow blank with a closed end is first produced by a combined piercing, drawing and extrusion press and then drawn out into a tube over a mandrel in a thrust bed. The combined press comprises a mandrel 12, Fig. 3, actuated by a cylinder 22 to first pierce a blank in a receiver 10 without destroying the end of the blank. A ram 11 actuated by a cylinder 14 then extrudes the blank through a die 13a surrounding the mandrel 12 which continues its forward motion to assist in drawing the blank through the die 13a. Rams 18 actuated by cylinders 19 returns the mandrel 12 and ram 11 to release the completed blank 2 which is then placed on a mandrel 31 and pushed through a thrust-bed 3. The thrust-bed may comprise a series of drawing rings 30 or a series of reducing rolls 32 (not shown). Additional driven rolls 34, 36 may be provided at the end of the bed 3 to draw through the finished tube.
Patent GB-969035-A (GB)
Title: Improvements in or relating to displacement displaying systems
IPC: H03M1/00
Filed: 1961-07-28
Abstract: 969,035. Electric selective signalling. LABORATOIRES DE PHYSIQUE APPLIQUEE. July 28,1961 [July 29,19601,No.27431/61. Heading G4H. An analogue-to-digital conversion system comprises means for obtaining a decimal representation of the position of a member and uses a plurality of switches having, respectively, 10, 10<SP>2</SP>, 10<SP>3</SP>,... 10<SP>n</SP> contacts, the wiper arms of all the switches being driven at the same speed by the member. In the Figure, shaft 1 moves wipers 5, 6, and 7, 8 and 9 at the same speed over banks of contacts Gu, Gd and Gc. Gc comprises ten contacts, GD one hundred contacts and Gu one thousand. Sets Vc, Vd, Vu of ten lamps each are associated with each bank of contacts and indicate the position of the shaft. Banks Gu and Gd are arranged so that each set of ten contacts joined to the lamps Vu and Vd isthe mirror image of the adjacent sets-this simplifies the printed wiring lay-out- and two wipers contact each bank. Only one wiper of each pair is in circuit at any one time, changeover from one to the other being controlled by relays as the wiper of the bank representing the next higher order of figures changes from one contact to the next. Arrangements are described, Figs. 4 and 5 (not shown), wherein the system energizes the appropriate electromagnets of a  printer which prints the decimal number indicated by the lamps.
Patent GB-1106594-A (GB)
Title: New substituted oxazolidones and oxazolidinethiones and process for their manufacture
IPC: A61K31/42
Filed: 1966-06-20
Abstract: 1,106,594. Compositions for treating angina. CIBA Ltd. 20 June, 1966 [9 July, 1965; 17 Nov., 1965; 6 April, 1966], No. 27463/66. Heading A5B. [Also in Division C2] Pharmaceutical compositions, useful in the treatment of angina pectoris and a disturbed heart rhythm, in forms for enteral or parenteral administration contain as the active ingredient compounds of the general formula wherein Z represents an oxygen or sulphur atom and R represent an alkenyl group which contains at least 2 and no more than 4 carbon atoms, preferably the vinyl, propenyl or butenyl radicals. The compositions may also contain other active ingredients, such as vasodilartory compounds, e.g. nitroglycerin, pentaerythritol tetranitrate, triethanolamine trinitrate, nitromannitol, theobromine, theophylline, 7 - (# - hydroxyethyl) - theophylline, 7 - (#,γ dihydroxypropyl) - theophylline, 2 - ethyl - 3 -. (3',5' - diiodo - 4' - hydroxybenzoyl) - benzofuran, 2,6 - bis(diethanolamino)- 4,8 - dipiperidino - pyrimido (5,4 - d) pyrimidine and N - 3' - phenyl - propyl - (2') - 1,1 - diphenyl - propyl - (3) - amine or adenosine.
Patent GB-870855-A (GB)
Title: Compound ram jet turbo-rocket engines
Inventor: BELCHER BRYN LESLIE
IPC: F02K7/16
Filed: 1957-08-30
Abstract: 870,855. Ratchet clutches. NAPIER & SON Ltd., D. Aug. 28, 1958 [Aug. 30, 1957], No. 27465/57. Class 80 (2). [Also in Group XXVI] A free-wheeling clutch 28, provided in the shaft connecting the compressor of a jet propulsion enging (see Group XXVI) with its turbine, comprises an internally-threaded sleeve 133 engaging with a quick pitch thread on the turbine shaft 29. A series of resilient members 140 on the sleeve bear against the face of the flange 141 of a sleeve 142 keyed or splined on the compressor shaft 27 and urged towards the turbine by a spring 143. When the speed of the turbine shaft exceeds that of the compressor the frictional drag due to the members 140 rotates the sleeve 133 on the shaft 29 to advance it towards the compressor, until dogs 134 on the sleeve engage with corresponding dogs 135 on the compressor shaft to establish a driving connection. Specifications 835,293, 835,294, 837,497, 870,853 and 870,854 are referred to.
Patent GB-1055520-A (GB)
Title: Pushbutton-controlled overload circuit breaker
IPC: H01H73/56
Filed: 1965-06-29
Abstract: 1,055,520. Automatic circuit - breakers. ELLENBERGER & POENSGEN G.m.b.H. June 29, 1965 [June 30, 1964], No. 27574/65. Heading H2B. A trip - free overload - responsive circuitbreaker has two conducting members 3, 4 disposed in the same plane for interconnection by a rectilinearly-moving bridging contact 45, one of the conducting members forming a loop 10 in which the core of an electromagnetic release is mounted. A bi-metallic strip 19 is connected in parallel with the loop and a twoarmed lever 36 has one arm 37 biased by spring 38 and its other arm 50 engaging in an aperture 49 in a slide 46 carrying the bridging contact. This lever has a pivot 54 which is slidable in slots 55, but may be latched by a detent 34 on a pawl 27. This pawl is latched by the armature (not shown) of the electromagnet and is released when the armature is attracted to the core of the electromagnet or moved by the bi-metallic strip. When this occurs the pivot 54 is released and the lever 36 is moved up until the arm 37 abuts a stop 56, the lever then pivoting about this stop to open the contacts with the arm 50 striking the upper end 52 of the aperture 49 to assist a spring 46<SP>1</SP> in opening the contacts. The pivoting of the lever 36 brings a recess 42 in a lug 41 of the lever 36 into the path of movement of a projection on a rod 57 extending from a push-button 7, so that when the push-button is depressed the lever 36 is moved downwardly. This causes the pivot 54 to engage a projection 35 on the pawl 27 so moving the pawl to a position in which it is relatched by the armature. When pressure is removed from the push-button, the pivot 54 is relatched by the detent 34 and the spring 38 turns the lever 36 to reclose the contacts. The circuit breaker may be manually tripped by moving two buttons, 8, 9 towards one another, the movement of the button 9 removing a latch from the button 8 so that the button 8 may move the armature to effect tripping.