baber/WOPTO huggingface dataset:
Patent GB-1469711-A (GB)
Title: Electrical discharge machining
IPC: B23H1/02
Filed: 1974-03-15
Abstract: 1469711 Electro-erosion COLT INDUSTRIES OPERATING CORP (ELOX DIVISION) 15 March 1974 [16 March 1973] 11676/74 Addition to 1453305 Heading B3V In an electric discharge machining apparatus, in which clock pulses are counted to determine the length of the " on " and " off " time of machining power pulses, the " on " count does not start until firing of the machining arc is detected. Pulses from a clock 38 pass to a counter 34a-34c which is controlled by independently pre-settable on-time and off-time switches 22, 24 respectively via data selector stages 26a-26c, the high or low state of point 32 of a flip-flop 30 determining which count is selected. The flip-flop also controls an electronic output switch 12 via a drive stage 10 for providing the machining power pulses to the gap. In operation, starting at the end of an ontime count, the flip-flop 30 changes over, transferring control of the counter to the off-time switch 24 and switching output switch 12 out of conduction. At the end of the off-time count a signal from the flip-flop 30 triggers a one shot stage 42 which in turn triggers a flip-flop 48 to prevent clock pulses from passing to the counter 34. Simultaneously the flip-flop 30 triggers the switch 12 into conduction to cause an arc to be struck across the machining gap. Striking of the arc is detected by a current-sensing circuit including transformer 50, which through a NAND gate 60 changes over the flip-flop 48 to allow clock pulses to pass to the counter 34 which only then begins the on-time count.
Patent GB-751276-A (GB)
Title: Improvements in mechanical rectifiers having roller contacts
IPC: H02M1/24
Filed: 1954-04-22
Abstract: 751.276. Interruptors. EMAG ELEKTRIZITATS-GES. April 22, 1954 [April 23, 1953]. No. 11677/54. Class 38(5) A rectifying switch comprises at least three rotatable members per phase each having a contact surface which rolls against the contact surfaces on one or more of the other members, at least one member being angularly displaceable relative to the others to vary the period in each cycle during which the current can flow. In the arrangement of Fig. 1 load 5 is supplied from single phase source 1 with current rectified by a switch comprising a central roller 3 with a continueous conducting surface 6 engaged by the surfaces of rollers 2, 4 which comprise alternating conducting and non-conducting segments. The conducting period may be varied by adjusting the position of roller 4 about its own axis (arrow 9) or that of roller 3. (arrow 8). To rectify a three-phase supply, three pairs of rollers with continuously conducting surfaces may be arranged around the periphery of a roller having alternate conducting and non-conducting segments, one roller of each pair being connected together for simultaneous adjustment about the axis of the central roller (Fig. 2, not shown).
Patent GB-904026-A (GB)
Title: Improvements in or relating to headers or like apparatus
IPC: B21K27/06
Filed: 1958-11-12
Abstract: 904,026. Forging; extruding. TEXTRON INDUSTRIES Inc. Nov. 12, 1958 [Dec. 18, 1957], No. 11821/62. Divided out of 904,025. Class 83 (4). In a heading or like machine having a die bed 11 with a plurality of dies 45, 46 and a transfer mechanism 90, 91 for moving a workpiece between the dies in a plane generally parallel to the die face, means 135 are provided for moving the transfer mechanism rectilinearly towards and away from the die faces to facilitate withdrawal and insertion of the workpieces from and into the dies. The description is the same as Specification 904,025 out of which the present Specification is divided. Specification 904,027 also is referred to.
Patent GB-565020-A (GB)
Title: Improvements in or relating to means for controlling the rate of feed in a lathe or other machine-tool
IPC: B23Q5/26
Filed: 1942-08-21
Abstract: 565,020. Turning; actuating slides. BAIGENT, G. M. Aug. 21, 1942, No. 11829. [Class 83 (iii)] In a lathe or other machine tool wherein the speed at which a slide may be fed is limited by a dashpot, means are provided for pre-setting the rate at which the dashpot will operate and for bringing it into operation only during the cutting stroke. As applied to a turret lathe, the dashpot cylinder 10 is contained in a stationary housing 9 and the flow of oil, glycerine solution &c. caused by thepiston 11 is controlled by a needle valve 13, which is actuated by an oscillating plate 23 pivoted at 24, 24, on the housing 9. The plate 23 is oscillated by a member 20 coacting with a cam 22 on a rod 14, the member being carried by a bracket 21 on a sleeve 15 freely slidable on the rod 14. A lever 16 connects the sleeve 15 to the dashpot piston 11. Adjustable stops 18 are provided on a plate 17 which is indexable with the tool turret, the action being such that the turret may be moved freely to bring a tool to the work, but before engagement of the tool and work the appropriate stop 18 meets the end of the rod 14 to cause the cam 22 to set the valve 13 at the required adjustment for that tool, after which an adjustable collar 19 on the stop 18 engages the sleeve 15, whereupon further movement of the turret has its speed controlled by the dashpot. During the cutting traverse of the tool, the member 20 slides along the plate 23 without affecting the valve 13. Specifications 565,018, 565,019 and 565,021 are referred to.
Patent GB-494762-A (GB)
Title: Means for destroying the energy of mass oscillations of solid bodies, particularly for the purpose of reducing noise in solid conductors of resonance oscillations
IPC: F01N1/14
Filed: 1937-04-26
Abstract: 494,762. Vibrationdampers for turbines, airscrews, silencers, etc.; shafts. DRESAG AKT.-GES. April 26, 1937, No. 11890. Convention date, April 27, 1936. [Class 108 (iii)] [Also in Groups XXIV, XXVI, XXVII, and XXXIII] Means for damping lateral oscillations of bodies comprises a loose damping mass of low elasticity arranged at the point of maximum amplitude of oscillation of the body and displaceable a uniform amount in the direction of oscillation, the displacement being at least twice the amplitude of oscillation of the body and the whole being such that at each change of direction of oscillation the damping mass and oscillating body impinge against each other at the greatest possible velocity when moving in opposite directions. As shown in Figs. 10, 11, a loose mass of lead &c. 7 is mounted in a groove 6a in propeller blades 6 to damp oscillations set up in the direction of the arrows H, J. In Fig. 12, loose rings 11 are mounted in grooves 10b on a rotor hub 10 to damp oscillations set up in the direction of the arrows K, L. In Fig. 13, a loose sleeve 21 of copper alloy &c. is guided between rings 22 on a silencer 13b to damp the lateral oscillations. The silencer is built up of sections 12a ... 12f, Fig. 14, separated by sheets of sound-absorbing material such as asl estos. The inner sides of the sections forming the tube 12 are punched outwardly to form air scoops 24 and the outer sides forming the tube 13 is flared at 13a in the direction of the incoming air and is swaged inwardly at 13b to increase the velocity of the air discharged. The path of the air and exhaust gases are shown by the arrows M and N respectively.
Patent GB-738522-A (GB)
Title: Improvements relating to magnetron pulse generators
Inventor: MILLER CHARLES WALTER
IPC: H03F1/54
Filed: 1953-04-30
Abstract: 738,522. Valve circuits. METROPOLITANVICKERS ELECTRICAL CO., Ltd. April 12, 1954 [April 30, 1953], No. 12024/53. Class 40 (6). A magnetron pulse circuit comprises control apparatus which interrupts or modifies the operation of the magnetron when the rate of occurrence of pulses in undesired modes becomes excessive. In Fig. 1 the output of a magnetron is fed to a filter which selects pulses of the desired frequency. Those pulses are rectified and applied to valve V1 while the grid of valve V2 is fed with pulses directly from the pulse modulator so that when the magnetron operates in the wrong mode and the pulses do not appear at the grid of V1 the valves V1 and V2 become unbalanced and produce pulses at P. These pulses are passed via a valve V3 to valve V4 to cause capacitors C1 and C2 to charge to a voltage dependent upon the rate of occurrence of the pulses. When the rate is excessive the voltage is sufficient to render a valve V5 sufficiently conductive to operate a relay which interrupts temporarily the operation of the magnetron. The function of valves V1 and V2 may be carried out in a single valve (Fig. 2, not shown) and the determination of the rate of occurrence of the pulses from valves V1 and V2 may alternatively be effected by charging a capacitor through a diode circuit (Fig. 3, not shown). In Fig. 4 the protection is afforded by reducing the repetition frequency of the pulses from the modulator and the control voltage for this purpose is obtained from valves V7 and V8. Valve V7 is normally cut off but is rendered conductive when the absence of negative rectified pulses on the grid of a valve V6 permits the pulses from the modulator to charge a capacitor C5 to a sufficiently large positive voltage.
Patent GB-131666-A (GB)
Title: Improvements in and connected with Stop Motions for Wire Twisting Machines and the like.
IPC: D07B7/08
Filed: 1918-07-24
Abstract: 131,666. Atkins, E. A., and Rylands Bros. July 24, 1918. Machines for making.-A machine for twisting or stranding wire of the kind that is stopped automatically by devices which are normally restrained by the wires but move to throw out the driving-mechanism and apply a brake, is so constructed that the wires are restrained by radially movable guide-members carried by a nose-plate mounted on the twisting cage or carriage. As applied to a twisting-cage 5 which resolves on a vertical axis, the wires are passed through holes in the inner ends 2 of a series of radially movable bars 1, which are mounted in a nose-plate 3 secured by stud supports 4 to the cage 5. When a wire breaks &c., the corresponding bar 1 moves outwards by centrifugal force and acts on an arm 6 on a shaft 7, and the arm is rotated to release a detent 9 from a recess in an arm 10, which, when the detent is released, moves under the action of a spring 12 to declutch or throw out the driving-mechanism of the machine. The spring 12 moves the arm 10 by the action of a lever 13. and the arm 10 is adjustably connected to a shaft 11 by a slotted quadrant 15 and a bolt 16. The cage 5 may be brought to rest quickly by applying a brake block to the cage by means of adjustable crank-and-lever mechanism 20, 22, 23, 24 operated from the shaft 11.
Patent GB-1096164-A (GB)
Title: Removing water from coal slurries
IPC: B01D33/00
Filed: 1965-03-22
Abstract: 1,096,164. Filters. HARPENER BERGBAU A.G. March 22, 1965 [March 28, 1964], No. 12064/65. Addition to 1,044,642. Heading B1D. To maintain the water content of treated slack on a rotary drum or disc filter 10 substantially constant the quantity and/or the temperature of an aqueous vapour with which the slack is treated after preliminary drainage is regulated by a device responsive to thermometres 17 arranged within the drum or discs. The temperature within the drum falls when the water content of the slack rises. The regulating device 19 (Fig. 2, not shown) controls valve 20 situated in the infeed 21 to filter hood 14 having adjustable valves 22. The regulator also influences valve 23 in conduit 24 of cooling water to a vapour cooler 25.
Patent GB-1415601-A (GB)
Title: Dihydrobetulinic acid derivatives
IPC: C07C61/125
Filed: 1973-03-14
Abstract: 1415601 Dihydrobetulinic acid derivatives BIOREX LABORATORIES Ltd 26 Feb 1974 [14 March 1973] 12336/73 Heading C2U The invention comprises compounds of formula wherein R is H or an aliphatic radical, and R<SP>1</SP> is an aliphatic radical optionally containing one or more free or esterified carboxy groups, excluding methyl; the salts of those compounds containing CO 2 H groups; and the preparation thereof from dihydrobetulinic acid or a 28- aliphatic ester thereof by 3-esterification optionally followed by salification. Pharmaceutical compositions comprise a carrier and a compound of the invention. Pharmacological activity and routes of administration are not disclosed.
Patent GB-1449364-A (GB)
Title: Pyrrolo 3-4-b- pyridines and method for their preparation
IPC: C07D471/04
Filed: 1974-03-20
Abstract: 1449364 Pyrrolo[3,4-b]pyridines GRUPPO LEPETIT SpA 12 March 1975 [20 March 1974] 12386/74 Heading C2C The invention comprises compounds of formula and their pharmaceutically acceptable acid addition salts, wherein R is H, C 1-4  alkyl or (possibly Cl-substituted) benzyl; R 1  is H 1  C 1-4  alkyl or (possibly Me-substituted) Ph; R 2  and R 4  are each C 1-4  alkyl, Ph or OH; R 3  is Ph or C 1-4  alkyl or alkoxy; and R 5  is C 1-4  alkyl. In examples, these compounds are prepared by cyclizing in presence of a base the intermediates of formula which are themselves made from the corresponding 3-aminopyrroles. The substitutent R is introduced (where desired) by reacting 3- benzalaminopyrroles with an alkylating or benzylating agent, and hydrolysing the thus formed 1-substituted-3-benzalaminopyrroles. Therapeutic compositions having anti-inflammatory and prostaglandin synthetose inhibitory activity, and in some cases C.N.S. depressant and hydric balance activity, comprise compounds of Formula I, and may be administered orally, rectally or parenterally.
Patent GB-982221-A (GB)
Title: Improvements in hose couplings
IPC: F16L37/084
Filed: 1963-03-28
Abstract: 982,221. Hose couplings. H. H. SMITH. March 28, 1963 [April 30, 1962], No. 12395/63. Heading F2G. In a coupling comprising a socket 1 including at least one spring catch 6 projecting from the inside wall thereof, and a spigot 2 having a groove 11 for engagement by the catch or catches, there is provided a sloping passage 13 in the wall of the groove adapted to co-operate with each catch. As shown, the socket has a flange 9 provided with a resilient band 10 of rubber, and a spring ball catch 14 adapted to co-operate with a groove in the spigot so as to indicate when the coupling parts have been rotated to the required position for separation by a straight pull.
Patent GB-1452407-A (GB)
Title: Clutches
IPC: F16D25/0638
Filed: 1974-03-20
Abstract: 1452407 Friction clutches CATERPILLAR TRACTOR CO 20 March 1974 [30 March 1973] 12412/74 Heading F2C  In a hydraulically actuated multiplate friction clutch wherein discs 46, 47 are clamped together by supplying pressure liquid through ducts 17, 32 to a clutch actuating chamber 63, the effect of centrifugal pressure in the actuating chamber 63 is balanced by supplying low pressure liquid through ducts 18, 31 to a balance chamber 68 having a piston 64 connected by a rod 69 to the clutch actuating piston 59. The pistons 59, 64 have equal areas. The rod 69 passes through a reaction wall 54 and a clutch disengaging spring 72 is provided in the balance chamber 68. Low pressure liquid is additionally supplied through ducts 18, 20, 52 to cool the clutch discs.
Patent GB-824033-A (GB)
Title: Soap holder
IPC: A47K5/05
Filed: 1957-04-16
Abstract: 824,033. Soap holders. ROUNSIVELL, W. A. March 11, 1958 [April 16, 1957], No. 12414/57. Class 131 A soap holder comprises a base 1 for attachment to a wall &c. and a tube 8 universally jointed to the base and on which a tablet of soap 9 is threaded, the soap having a pre-formed bore 10, 10a forming a shoulder co-acting with the head 11 of a locking member retained in the tube by means accessible for release through apertures 19 in the tube when the soap has been worn away. The retaining means consists of spring-urged fingers 12 pivoted on the head 11 and engaging a groove 14 in the tube or, according to the Provisional Specification, spring urged fingers or balls on either member engaging a circumferential groove in the other member.
Patent GB-654443-A (GB)
Title: Process for the production of alkylpyridines
Filed: 1948-05-05
Abstract: 3,5-Dialkylpyridines are made by reacting an alpha-alkyl-alpha, beta-unsaturated aliphatic aldehyde with ammonia in the presence of a dehydration catalyst at a temperature from 200-500 DEG  C., preferably 300-400 DEG  C.  Aldehydes specified are methacrolein, alpha, betadimethyl - acrolein, alpha - methyl - beta - ethyl - acrolein, alpha-propyl-acrolein, alpha-isobutyl-acrolein, alpha-amyl-acrolein, ethacrolein and alpha - methyl - crotonaldehyde. Alpha - alkyl-acroleins are preferred and a charge of mixed aldehydes may be used.  Preferably ammonia is used in molar excess ratios of 0.5-20, preferably 5-15, being quoted.  Diluents, e.g. nitrogen, steam and hydrocarbons such as butane and hexane may be present. Atmospheric or superatmospheric pressures may be used throughout, rates ranging from 1-100, preferably 20-50, mols. of reactants per litre of catalyst per hour are quoted.  Catalysts specified are phosphoric acid, boron and aluminium phosphate, phosphoric acid combined with adsorbent material such as clay and charcoal, synthetic and natural adsorptive alumina, e.g. activated alumina and bauxite, fuller's earth, silica gel, and oxides of metals such as Al, Zn, Zr, Th, Si, W, Be and Bi.  Dehydrogenation-dehydration catalysts may be used, e.g. a combination of one of the above metal oxides with Ti, V, Cr, Mn or Cu or their oxides.  The catalyst may be on a conventional support and is preferably preconditioned by heating at 300-400 DEG , preferably 325-375 DEG  C., in ammonia.  Catalysts are regenerated by treatment with a gas containing free molecular oxygen at 300-500 DEG C.  Reaction products are essentially 3,5-dialkylpyridines, saturated aliphatic alcohols and water generally in equimolar quantities.  In an example methacrolein and ammonia are reacted at 352-370 DEG  C. in the presence of boron phosphate to yield 3,5-lutidine, methyl alcohol and water.  It is stated that 3,5-diethyl, -dipropyl, -diisopropyl and -diamyl-pyridines may be prepared in a similar fashion from the requisite aldehyde.  Specification 609,059 is referred to.  In the Specification as open to inspection under Sect. 91, the aldehydes may be reacted with primary amines and/or ammonia. Primary amines specified include methyl-, isopropyl-, amyl-, methylcyclopentyl- and cyclohexylamines.  The hydrocarbon diluents may also be capable of conversions under the reaction conditions.  This subject-matter does not appear in the Specification as accepted.
Patent GB-284303-A (GB)
Title: Improvements in or relating to filter structures, particularly applicable for use in connection with carburettors
IPC: B01D36/00
Filed: 1927-05-09
Abstract: 284,303. Shromberg Motor Devices Co., (Assignees of Chandler, M. E.). Jan. 29, 1927, [Convention date]. Detachable stoppers secured by clamping- devices. - In chambers, e.g. filter chambers, having a glass or other frangible cover, the cover 19 is provided with a flange 21, Figs. 3 and 4, resting on a seat 17 on the body 12 of the chamber, and is secured in position by a clamping ring 24, gaskets 22, 23, preferably of cork, being interposed between the parts. The ring 24 is attached to bosses 26 on the body 12 by screws 27, and abutments 26' may be provided on the bosses 26 to limit the movement of the ring 24. In a modification, the ring 24 is provided with protecting strips passing over the top of the cover 19.
Patent GB-1324066-A (GB)
Title: Photo copying apparatus
IPC: G03G15/28
Filed: 1971-04-30
Abstract: 1324066 Photo-copying apparatus W ZINDLER [trading as LUMOPRINT ZINDLER KG] 30 April 1971 [5 May 1970] 12478/71 Heading G2A A photo-copying apparatus provided with a cover 26 and pairs of transport rollers 27, 29 and 28, 30 for feeding a sheet original past a scanning orifice 2 in synchronism with a charged copy sheet moving past an exposure plate 9, is also provided with a movable transparent mount 25 for e.g. a book original, the mount 25 being moved past the orifice 2 during the copying action. The mount 25 at least the upper transport rollers and cover 26 together form a displaceable carriage, the mount 25 terminating a sufficient distance from the cover 26 to enable sheet originals to be inserted between the rollers 27, 29. During the copying of a book page, the mount 25 is moved to the right (as seen) by means of rollers 41-43 rolling in a lateral slot 45. The cover 26 and idler rollers 27, 28 are also moved to the right, Fig. 2 (not shown), a rail (60) depressing a transparent guide 32 used in sheet original  copying. After the book page has been copied, the carriage is returned to the position shown. In another embodiment, Fig. 6 (not shown) all four rollers (27, 28, 62, 63) associated with the cover (26) are moved therewith, as is plate (64), corresponding to the guide 32.
Patent GB-849082-A (GB)
Title: Reserpine derivatives and process for their manufacture
Filed: 1957-04-17
Abstract: The invention comprises racemic compounds of the general formula: <FORM:0849082/IV(b)/1> and salts thereof (X represents the remainder of a benzene nucleus, which may be substituted, particularly in positions 10-and/or 11-, e.g., by a halogen atom, lower alkyl or alkoxy groups, containing up to 5 carbon atoms, or a methylenedioxygroup, R1 is lower alkyl) together with a process for the preparation of compounds (d, 1, or dl-forms), of the formula: <FORM:0849082/IV(b)/2> and their salts (Z being - COOR in which R is H or lower alkyl, and R11 being H or an acyl group) by treating a compound of the formula: <FORM:0849082/IV(b)/3> with a dehydrating agent, giving compounds of the general formula I, which may be then treated with a hydrolysing or alcoholysing agent to split the lactone ring, and if desired any subsequent esterification or hydrolysis of carboxylic and/or hydroxyl groups, conversion into salts or liberation of the free base can be performed.  Specified dehydrating agents include inorganic or organic acid anhydrides and acid chlorides, e.g., polyphosphoric acid, P2O5, POCl3, SOCl2, and acetic anhydride, preferably in the presence of a "Lewis" acid. Specified acyl groups (R11) are derived from the following acids :-acetic; propionic; 4-methoxy-, 3, 4-dimethoxy-, 3, 4-diethoxy-, 3, 4-methylenedioxy- and 3, 4, 5-trimethoxy-benzoic; O-carbalkoxysyringic; di-and trimethoxy-cinnamic; furan-2-carboxylic; nicotinic and iso-nicotinic; thiophene-2-carboxylic; benzene and p-toluene sulphonic acids; while acid addition salts may be formed with e.g., hydrohalic, sulphuric, phosphoric, nitric, and acetic acids, and alkali and alkaline earth metal salts may be formed with free carboxylic acid compounds.  In examples :-(1) 3-iso-reserpic acid hydrochloride is heated under nitrogen with acetic anhydride containing a trace of acetic acid, giving reserpic acid lactone; (2) similarly dl-3-iso-reserpic acid hydrochloride (from hydrolysis of dl-O-acetyl methyl 3-iso-reserpate with methanolic KOH) gives dl-reserpic acid lactone, and dl-iso-deserpidic acid hydrochloride yields dl-deserpidic acid lactone; (3) dl-reserpic acid lactone is refluxed with sodium methylate in methanol and the resulting dl-methyl reserpate treated with 3, 4, 5-trimethoxybenzoyl chloride in pyridine to give dl-reserpine.  Specification 818,896 is referred to.