baber/WOPTO huggingface dataset:
Patent GB-1311307-A (GB)
Title: 22,23-secosolanidane derivatives
IPC: C07J75/00
Filed: 1970-06-29
Abstract: 1311307 22,23-Secosolanidanes OSTERREICHISCHE STICKSTOFFWERKE AG 29 June 1970 [7 July 1969 24 April 1970] 31474/70 Heading C2U The invention comprises compounds of formula wherein X-Y represents >CH(α)-CH 2 -, >CH(#)-CH 2 - or >C=CH-; and A represents carbonyl, dialkoxymethylene, α- or #- hydroxymethylene or ethylenedioxymethylene, and wherein there may be present a #<SP>4</SP>-double bond when A is carbonyl and X-Y is saturated. These compounds are prepared by complex aluminium hydride reduction of compounds of formula where A<SP>1</SP> represents dialkoxymethylene, α- or #-hydroxymethylene, α- or #-acryloxymethylene or ethylenedioxymethylene, optionally followed by 3-deketalization. Any 3-acyloxy group is converted to a hydroxyl group during the reduction. Compounds of Formula III are prepared by alkaline hydrogen peroxide oxidation of compounds of Formula II (see Specification 1,227,728) or of the corresponding #<SP>22(N)</SP>-imonium salts (see Specification 1,226,503) (wherein A<SP>1</SP> is carbonyl α- or #-hydroxymethylene or α- or #-acyloxymethylene, and wherein a #<SP>4</SP>-double bond may be present when A<SP>1</SP> is carbonyl and X-Y is saturated), followed, when A<SP>1</SP> is carbonyl, by 3-ketalization.
Patent GB-956559-A (GB)
Title: Improvement in disc brakes
Inventor: BUTLER HENRY JAMES
IPC: F16D65/54
Filed: 1959-09-16
Abstract: 956,559. Disc brakes. DUNLOP RUBBER CO. Ltd. Aug. 31, 1960 [Sept. 16, 1959], No. 31522/59. Heading F2E. In a spot-type disc brake a resilient wear compensating arm 28 is connected at one end to a friction pad 20 and secured at the other end to a part of the brake structure so as to be angularly movable in relation to the part against frictional interference, the arm serving to retract the pad from the disc 10 to release the brake and moving angularly in relation to the part of the brake structure as pad wear takes place to advance the pad progressively towards the disc and thereby compensate for pad wear. In the disc brake illustrated, a pair of friction pads 20 slidable in housings 15 are movable by fluid pressure-operated brake applying mechanisms 19 into braking engagement with opposite sides of a brake disc 10 and each friction pad is carried by a metal backing plate 21 which is connected to a wearcompensating arm 28 mounted at its other end for angular movement against frictional resistance in relation to a non-rotatable part 12 of the brake structure. The crank arms 28 are pivoted to a part of the brake structure formed by a rod 26 screwed at each end and provided with a spacing member 27 so that when nuts 29 are screwed to a predetermined degree of tightness, a predetermined degree of frictional interference is provided between the cranked arms 28 and the rod 26 and tubular spacing member 27. The friction pads are normally retained in the housings 15 by tongues 23 on retaining plates 24 bolted to the housings 15 and removal of these plates 24 facilitates replacement of the friction pads in a radial direction. On applying the pads to the brake disc the resilience of the cranked arms 28 permits the small movement of the pad assemblies towards the disc to take up the running clearance without affecting the relative positions of the arms and on release of the braking pressure the resilient arms 28 return the pad assemblies to their original position to maintain a running clearance between the pads 20 and the disc 10. As wear of the pads occurs, this clearance increases until the cranked arms can no longer deflect sufficiently for full frictional engagement to be effected and the force exerted by the pistons 19 then overcomes the frictional interference between each pair of cranked arms 28 and the rod 26 and imparts a slight relative angular movement to each pair of arms. On release of the braking pressure the resilience of the arms 28 will return the pad assemblies the same predetermined distance to maintain running clearance. To prevent oscillatory movement of the rod 26 and spacing member 27, the rod may be provided with extensions at its end which fit loosely in deformable sleeves mounted on the retaining plates (not shown). Reference has been directed by the Comptroller to Specifications 818,077 and 881,423.
Patent GB-169639-A (GB)
Title: Improvements in railway rail joints
IPC: E01B11/26
Filed: 1920-11-08
Abstract: 169,639. Swanson, H. E. Nov. 8, 1920. Rail joints, scarf and like; rail joints.-Rail ends are spliced along a longitudinal horizontal plane through the webs, one rail 10 having a base extension 15 while the other rail 11 has a head extension 16. The extension 16 has a groove 23 in its web portion to receive a rib 22 on one of a pair of fish-plates.
Patent GB-699820-A (GB)
Title: Process for the production of unsubstituted or in the phenyl group substituted 1-phenyl-2-amino-1:3-propandiols
Filed: 1950-12-29
Abstract: 1 - Phenyl - 2 - amino - 1 : 3 - propandiol and its derivatives are manufactured by reducing to -CH2OH the aldehyde group in a compound of the general formula <FORM:0699820/IV (b)/1> (wherein R1 represents an alkyl, aralkyl or cycloalkyl residue, R2 the residue of a dicarboxylic acid and X hydrogen or a nitro group) and then splitting off the groups R1 and R2.  The reduction may be effected by means of primary or secondary alcohols in the presence of aluminium alcoholates (especially when a nitro group is present) or of zinc dust and hydrochloric acid, or by catalytic hydrogenation, e.g. in the presence of noble metal catalysts such as palladium or platinum. Preferred starting materials are those in which R2 is a phthalic or succinic acid residue and X is a nitro group in the p-position.  In a modification of the process, the latter group is introduced by nitration after the reduction step and after acylation of the -CH2OH group formed thereby, the acyl group introduced in the 3-position being split off at the same time as the residue R2.  In either case the group R1 may be split off at the same time as the residue R2 (and the acyl group, if any, in the 3-position) by acid hydrolysis, or the latter may first be split off in an alkaline medium by means of hydrazine and then the former by means of concentrated hydrobromic acid.  The aminodiols may be separated into optically active isomers, or this may precede the splitting off of R1 when performed as a separate step.  The products are useful as intermediates for antibiotics.  In an example: (a) DL-threo-b -phenyl-b -methoxy-a -phthalimidopropionaldehyde is heated with isopropanol and aluminium isopropoxide to produce DL-threo-1-phenyl-1-methoxy - 2 - phthalimidopropan - 3 - ol, which may be esterified with acetic anhydride and nitrated with concentrated nitric acid to give DL - threo - 1 - p - nitrophenyl - 1 - methoxy - 2 - phthalimido - 3 - acetoxypropane; b  - p - nitrophenyl - b  - methoxy - a  - phthalimidopropionaldehyde may also be reduced by the foregoing method; (b) DL-threo-1-phenyl- or -p-nitrophenyl - 1 - methoxy - 2 - phthalimidopropan - 3-ol is heated with hydrazine in alcohol to remove the phthalic acid residue; (c) DL- or L-threo-1-phenyl- or -p-nitrophenyl-1-methoxy-2-aminopropan-3-ol is heated with hydrobromic acid to produce the corresponding aminodiol, which may be purified by treatment by p-nitrobenzoyl chloride, crystallization of the resulting N - p - nitrobenzoyl derivative and hydrolysis with a mixture of glacial acetic and concentrated hydrochloric acids. Specification 699,819 is referred to.
Patent GB-433698-A (GB)
Title: Improvements in electric valve current control systems for a.c. circuits
IPC: G05F1/34
Filed: 1933-11-15
Abstract: 433,698. Supplying consuming devices. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.- (Assignees of Lord, H. W. ; 1103, Palmer Avenue, Schenectady, New York, U.S.A.) Nov. 15, 1933, No. 31858. Convention date, Nov. 17, 1932. [Class 38 (iv)] An arrangement for controlling the voltage across a load 11 supplied from an A.C. generator 10 comprise a number of inductive windings across which pairs of reversely connected valves are connected means being provided for maintaining a predetermined division of load between the valves. Pairs of valves 15, 16 and 17, 18 are connected across the secondary winding 14 of the transformer 12, control of current being effected by supplying the grids from a phase-shifting circuit 23, 24, 25. A resistance 19 is connected between the mid-point of the pairs of valves and the mid-point of the winding 14 to effect load sharing. A thermal switch 26 is connected in the grid circuit and the resistance 1<a> used as a heater so that if an unbalance of load persists the switch opens and renders the valves non-conducting. Load division may also be effected by giving the transformer 12 a large leakage reactance. In a modification in which this is utilized the primary winding 13 is in two parts mounted on separate limbs which carry cophasal secondaries. The resistance 19 is connected in parallel with the series groups of valves.
Patent GB-1007141-A (GB)
Title: Improvements in or relating to prefabricated box shaped building elements for constructing buildings
IPC: B28B7/22
Filed: 1961-09-05
Abstract: 1,007,141. Dwelling houses. PATENT CONCERN N.V. Sept. 5, 1961 [Sept. 14, 1960], No. 31858/61. Heading E1A. A prefabricated box-shaped building unit comprising walls 110, 111 and floor and ceiling 113, 112 respectively has strengthening ribs 115. The ribs are joined by arcuate ribs 116. The units are joined by tie rods through holes 117 or they may be bolted to the units of the next storey. Specification 1,007,143 is referred to.
Patent GB-959276-A (GB)
Title: Electrodeless discharge lamp apparatus
IPC: H01J65/04
Filed: 1961-09-05
Abstract: 959,276. Discharge lamps. VARIAN ASSOCIATES. Sept. 5, 1961 [Sept. 16, 1960], No. 31905/61. Heading H1D. [Also in Divisions G1 and H3] Apparatus for producing a high frequency discharge comprises an electrodeless discharge tube having a bulb 1 of a material exhibiting a high frequency electrical loss and provided with a reservoir chamber 3 containing a vapourproducing substance and a pair of coils 6 surrounding the bulb and adapted, when supplied with electrical oscillations at a suitable frequency, to generate a high frequency field which initiates a discharge in the tube and to heat the bulb walls, the arrangement being such that the discharge intensity is concentrated within a narrow spectral band. The material of the bulb is preferably a borosilicate glass blown to a thickness of 5-10 mils., and a heat-leak path is preferably provided from the reservoir region such as to maintain the region at a temperature which is lower than the discharge temperature. The filling may be krypton at a pressure of 1-3 mms. of mercury with an alkali metal; in a specific example one milligram of ribidium is contained within a bulb of 1 cm. in diameter. Alternatively, krypton-85 may be used with isotopically enriched rubidium. The coils are energized by a high frequency oscillator comprising a pair of triode amplifier tubes cross-coupled through grid-plate capacitors. Specification 959,275 is referred to.
Patent GB-634099-A (GB)
Title: Automatic means for detecting damage to the edges of kinematograph films
IPC: G03B21/32
Filed: 1946-10-28
Abstract: 634,099. Kinematograph apparatus. BECOTE, A. Oct. 28, 1946, No. 31984. Convention date, Feb. 28, 1945. [Class 97 (i)] An automatic mechanism for detecting damage to the edges of kinematograph films comprises a feeler system which is sensitive to notches or like defects, has portions which contact each edge of the film and controls the stopping of the motor driving the film whenever a defect is detected in either edge of the film. As shown in Fig. 2, the feeler system comprises a partly frusto-conical roller 2 mounted for rotation on an axis 2<SP>1</SP> carried by a rod on a rigid frame, and a feeler roller 3 rotatably mounted on a lever 4 which is pivoted at 5 to the frame and is spring-urged at 6 so that roller 3 always contacts one edge of the film x. A pivoted lever 7 contacts lever 4 at one end and at the other end is adapted to engage either of two contacts 8, 9. When roller 3 meets a notch in the film edge, lever 4 is rotated clockwise by the spring 6 so that lever 7 is also rotated clockwise, contact between lever 7 and the piece 9 is broken and between lever 7 and piece 8 is made. In this way, the circuit of the film-driving motor is broken and an alarm or tell-tale lamp is energized. The same effects occur if a notch in the other edge of the film meets the bearing roller 2, pressure of roller 3 on the other edge causing the film to be moved in a direction normal to its length. After repair of the film the motor circuit is again made by means of a frusto member 13, one end of which contacts the lever 7 and rotates it counterclockwise. In another embodiment, two bearing rollers are arranged symmetrically with respect to a single feeler roller and in contact with the film edge opposite to that contacted by the feeler roller; also, each edge of the film may be contacted by a feeler roller, each feeler roller being associated with one or a pair of bearing rollers which contact the film edge opposite that contacted by the feeler roller. A bearing roller is also described which is connected frictionally with a lever operating a braking shoe for a film take-up reel so that the take-up reel is braked whenever the motor circuit is broken.
Patent GB-299856-A (GB)
Title: Improvements in or relating to keying systems for use in radio or line telegraphy
IPC: H04L25/03
Filed: 1928-11-02
Abstract: 299,856. Marconi's Wireless Telegraph Co., Ltd., (Assignees of Hansell, C. W.). Nov. 2, 1927, [Convention date]. Restoring or. modifying imperfect signals.-A wireless transmitter is modulated at a distance from a transmitter K such as a high speed tape transmitter, and means are provided for preventing distortion whether at high or at low signalling speeds. The key or tape transmitter K sends positive and negative impulses through the line 6 to the wireless retransmitter W, a resistance 12 equal to the characteristic, impedance of the line being provided. High speed signals are transferred to the push-pull pair of valves 18, 20, through the transformer coupling 14, 16, the resistances 34, 36, being effectively short-circuited by the condensers, 30, 32. For low-speed signals, however, the resistance coupling becomes effective. The valves control a differential relay 26 which applies a negative bias to some stage in an amplifier which connects a master oscillator MO with a power amplifier PA, thus modulating the output of the wireless retransmitter.
Patent GB-716776-A (GB)
Title: Improvements in or relating to fluid pressure engines for producing oscillatory motion
IPC: F15B15/12
Filed: 1952-12-18
Abstract: 716,776. Fluid pressure motors. ARNDT, F. Dec. 18, 1952 [Dec. 18, 1951], No. 32128/52. Class 110(2) A fluid pressure motor with an oscillating piston, comprises a cylinder 4 in which is mounted the piston consisting of a shaft 1, vane 2, and circular end plates 3, the cylinder being fitted with a partition 6 extending radially to the shaft 1, and with means for introducing fluid into and exhausting it from the two chambers formed by the partition and the vane. The vane extends from one plate 3 to the other and from the shaft to the cylinder wall, while the plates extend to the cylinder walls. By this construction, especially when the parts are accurately ground, pressure losses normally due to large clearances are reduced to a minimum. In a modification Fig. 3 (not shown) the vane is mounted in radial slots in the end discs and in a longitudinal groove in the shaft; helical springs in this case urge the vane outwardly against the cylinder wall. Leakage is further prevented in this case by providing interengaging circular grooves and ribs in the adjacent circular faces of the plates and cylinder. In another modification Figs. 5 and 6 (not shown) the end plates are carried by a boss which is keyed to the shaft.
Patent GB-604616-A (GB)
Title: Improvements in buoyant kites for trawl nets
IPC: A01K75/04
Filed: 1945-11-28
Abstract: 604,616. Fishing. PHILLIPS, J. W. Nov. 28, 1945, No. 32162. [Class 48] A buoyant kite for the head rope of a trawl net comprises a hemispherical hollow rigid float a, Fig. 2, closed at the mouth by a rigid plate b and is provided on the face remote from the hemisphere with means d for attachment to the head rope. In Fig. 3 a stabilizing fin e and a directive funnel g is provided. In Fig. 8 a smaller hemisphere h provided with a fin k having an attachment hole f is welded to the closing plate. The kites may be castings or may be fabricated from hardened steel sheet by welding.
Patent GB-899080-A (GB)
Title: Improvements relating to apparatus for separating potatoes, carrots, turnips and like root crops as harvested from earth clods, stones and like accompanying matter
Inventor: SHOTBOLT RONALD ARTHUR
IPC: B07B13/00
Filed: 1959-09-22
Abstract: 899,080. Root crop harvesters. SHOTBOLT MACHINERY DEVELOPMENT Ltd. Sept. 13, 1960 [Sept. 22, 1959], No. 32248/59. Class 6(3). [Also in Group II] A harvester, Figs. 1 and 2, includes a separating device S (see Group II) in the form of two or more turntables for separating the crop from stones and earth &c., and has a chassis comprising longitudinal members 19, 20, vertical members 22 and cross members 23 propelled by a partially dismantled tractor T. The latter has its steering wheels removed and the rear wheels 9 of the harvester are stearable from the driver's seat. The crop &c. is lifted by ploughs 1 between discs 2 and carried rearwardly by an elevator 3; it is then discharged through a haulm separator 4 to a transverse conveyer 5 through which some of the earth &c. falls to the ground. The remainder of the aggregate passes to the lower end of an elevator 6 and then fed to the separator 5. Potatoes or other root crop are fed from the separator to a conveyer P, and the stones &c. are discharged to the ground. The lower portion of the elevator 3 is pivotally mounted on the upper portion to move upwardly and downwardly, and is adjusted by the hydraulic lifting gear 29 of the tractor via a pivoted lever 30 which carries a horizontal rod 32 engaging in jaws at the outer ends of the side frames of the elevator. The conveyers and the separating device are driven from the engine of the tractor unit via chain and sprocket drives. Specifications 780,805 and 899,081 are referred to.
Patent GB-1041359-A (GB)
Title: Polymer solutions from polymer latices
IPC: C08J3/09
Filed: 1965-07-28
Abstract: A solution of a homo- and/or co-polymer is prepared from a latex of the polymers by a process in which the latex is wholly or partly frozen and is, before, after or during freezing, brought into contact with an organic solvent for the polymer in an amount at least sufficient to dissolve the polymer, after which the organic phase comprising the polymer in solution is isolated.  It is preferred that the polymer may be liquid or semi-solid and examples treat butadiene-styrene rubber, the solvent being methylcyclohexane and cis-1-4-polybutadiene also with methylcyclohexane.
Patent GB-1402376-A (GB)
Title: Zener diode structure
IPC: H01L29/866
Filed: 1973-07-06
Abstract: 1402376 Semi-conductor devices MOTOROLA Inc 6 July 1973 [23 Aug 1972] 32326/73 Heading H1K One of the regions defining a Zener breakdown junction comprises a first relatively deep, highly doped portion 80 which forms the active junction with adjacent region 84, and a second shallower, more lightly doped portion 85/86 which adjoins the deeper portion 80 and connects it to the upper surface of the device, where contact is made. The other junction-defining region 84 also carries a contact 92 at the upper surface of the device, which is thus planar in form. The active Zener junction between region 84 and deep portion 80 is entirely buried within the semi-conductor body. Separate input and sensing contacts 90, 94 are provided on the two wings 86, 85 of the shallow portion of the firstmentioned region. Isolation between the two rings 86, 85 may be enhanced by causing corners of the region 84 adjacent the wing 85 to overlap same and hence to contact the surrounding material 76. Conventional planar techniques are employed in the device manufacture, which is thus compatible with integrated circuit manufacture. In the embodiment illustrated the device is formed in an island defined in an N- type Si epitaxial layer 76 on a P-type substrate 74 by P<SP>+</SP> isolation diffusions 78. Successive P- type diffusions of As and B, simultaneous with transistor base diffusions elsewhere in the integrated structure, provide the portions 80 and 85/86 of the first Zener region, and an N<SP>+</SP> diffusion, simultaneous with emitter diffusions elsewhere, forms the region 84. Al contacts 90, 92, 94 complete the device. In a modification the provision of an As-doped N<SP>+</SP> buried layer (12), Fig. 1 (not shown), beneath the deep, highly doped P<SP>+</SP>-type portion (22) enables the latter to be diffused at the same time as the isolation walls (20) while remaining isolated from the P-type substrate.
Patent GB-756173-A (GB)
Title: Improvements in winding machines for yarn and the like
Inventor: GEORGE JAMES HAVELOCK
IPC: B65H63/036
Filed: 1953-11-21
Abstract: 756,173. Winding yarn. FRASER & SONS, Ltd., D. Nov. 15, 1954 [Nov. 21, 1953], No. 32358/53. Class 120 (2). A machine of the kind in which the yarn package 1 is driven by frictional contact with a horizontal driving roller 2, is furnished with a pedal 11 connected by a lever 10 and link 9, the latter carrying a pawl 8, to a lever 3 connected to the yoke 5 carrying the yarn package 1. The lever 3 carries a ratchet 7 and the levers and links are biased by a spring 12 connected to an arm 13 carrying a mask 14 for the ratchet 7. Depression of the pedal 11 raises the package 1 clear of its driving roller 2 irrespective of package diameter.
Patent GB-913900-A (GB)
Title: New anthraquinone and perylenetetracarboxylic acid imide dyes and their production
Inventor: BRAUN WILLY
Filed: 1960-09-21
Abstract: The invention comprises dyes of the formula:-  <F\1> where F is the radical of an anthraquinone or perylene tetracarboxylic acide imide dye having at least one water-solubilising group, A is an arylene radical which may be substituted, X is a halogen atom, R1 is hydrogen or alkyl, Y is a -CO- or -SO2-group and n is a number from 1 to 4. The dyes are made by reacting an alpha-halogen-methylaryl carboxylic or sulphonic acid halide with a water-soluble anthraquinone or perylenetetracarboxylic acid imide dye containing 1 to 4 amino or alkylamino groups. Examples are given. The dyes dye and print textile materials of native or regenerated cellulose in conjunction with a treatment with a base and also textile materials of wool, silk, synthetic polyamides and polyurethanes and leather.  Specification 831,371 is referred to.