baber/WOPTO huggingface dataset:
Patent GB-702455-A (GB)
Title: Improvements in or relating to propulsion units of the gas turbine type
IPC: F02C6/20
Filed: 1950-06-28
Abstract: 702,455. Jet propulsion, gas turbine plant. DE HAVILLAND ENGINE CO., Ltd., HALFORD, F. B., MOULT, E. S., and ARSCOTT, W. H. Aug. 8, 1951 [June 28, 1950], No. 16150/50. Class 110(3) The air intake to the eye of the turbine-driven centrifugal compressor C is provided with whirl producing vanes H, and the air passes from the compressor through an annular diffuser M to an annular combustion chamber or ring of combustion chambers N. which exhaust through a nozzle ring N' or its equivalent to the turbine E which exhausts in turn to the propulsion nozzle N<SP>3</SP>.The vanes H may be mounted on a rotor H<SP>1</SP> driven from the turbine shaft through gearing K at half the speed of the turbine shaft. In a modification the rotor is driven directly by a second turbine in series with the first one. The diffuser is fitted with straightening vanes and the compressor may have an outlet designed to give the air a rearward velocity component. The inner wall of the bend L.may have appropriate inflow or outflow ducts for boundary layer control. The axis of the combustion chambers may have, a. tangential component. Specifications 695,948 and 697,285 are referred to.
Patent GB-684111-A (GB)
Title: Improvements in or relating to anthelmintic drugs
IPC: C07D315/00
Filed: 1950-06-28
Abstract: The invention comprises lactones of the formula <FORM:0684111/IV (b)/1> where Ph is a substituted phenyl group containing either two or more alkyl groups or at least one alkyl group of two or more carbon atoms.  These are made from the corresponding g -phenyl-g -ketobutyric acids by (1) reduction to hydroxy-acids and dehydration or (2) dehydration of the enolic forms to give substituted crotonolactones which are then hydrogenated.  Salts or esters of the acids may be used, these being hydrolysed before ring closure. Reduction may be by nascent hydrogen (sodium amalgam or zinc), catalytic hydrogenation (nickel or palladium) or the Meerwein-Ponndorf reaction (isopropanol).  In the examples, the following g -substituted g -ketobutyric acids are converted into hydroxy-acids and ring-closed: 4-ethylphenyl, 3 : 4-dimethylphenyl, 4 - propylphenyl, 4 - isopropylphenyl, cymyl (mixture of 2 isomers), 4-butylphenyl, 4-isobutylphenyl, 4-isoamylphenyl, 4-n-hexylphenyl and pseudocumyl. g -4-Isopropylphenyl-g -ketobutyric ethyl ester is also reduced to the hydroxyester which is then hydrolysed to the free acid before ring-closure.  In a further example, g -4-isopropylphenyl-g -ketobutyric acid is heated with acetic anhydride to yield g -4-isopropylphenyl-crotonolactone, which is then hydrogenated.  g  - Pseudocumyl - g  - ketobutyric acid is obtained from pseudocumene, succinic anhydride and aluminium chloride.
Patent GB-908103-A (GB)
Title: Improvements in or relating to the production of semi-conductor elements
IPC: C22C5/02
Filed: 1959-05-12
Abstract: 908,103. Semi-conductor devices. SIEMENSSCHUCKERTWERKE A.G. May 12, 1959 [June 14, 1958], No. 16246/59. Class 37. A doped region in a semi-conductor such as silicon is produced by alloying to the semiconductor a foil comprising the impurity, gold and from .01% to 1% of bismuth. The impurity may consist of antimony to provide an N-type region, or boron to provide a P-type region. The foil may be produced by first mixing gold and boron powders and tempering for several days under pressure at 900‹ C., then placing the product with bismuth between gold foils, fusing, and rolling out. Specifications 827,762, 840,241 and 907,303 are referred to.
Patent GB-254723-A (GB)
Title: Improvements in metallic boxes and closing means therefor
IPC: B65D45/32
Filed: 1926-06-30
Abstract: 254,723. Longchamp, L. C. June 30, 1925, [Convention date]. Capsules and like closures; lever lids. - The cover and mouth-opening of a metal box or can are formed as shown, the wall f of the cover terminating in a slightly coned part f to afford an easy fit. The closure is shown provided with a re-enforcing band i, shown detached and opened out in Fig. 5, and having a shouldered locking tongue i<1> adapted to engage a slot m, the tongue being broken at the narrowed part to release the band.
Patent GB-1234687-A (GB)
Title: Automatic shape control system for bar mill
IPC: B21B37/50
Filed: 1969-03-28
Abstract: 1,234,687. Rolling rod. MORGAN CONSTRUCTION CO. 28 March, 1969 [12 April, 1968], No. 16443/69. Heading B3M. [Also in Division G3] A bar or rod finishing mill comprises two adjacent stands A, B having rolls whose axes are oriented at a substantial angle (90 degrees) and whose gaps are controlled by respective systems responsive at least to sensors 1, 3 of the dimension reduced by the preceding rolls, and whose relative speed is controlled in response to a detector 18 of the size of a loop formed between the stands. The complete gap setting system comprises for each stand a retroactive loop in which the dimensional error after the rolls is determined and integrated over the transport time between rolls and detector, a concurrent loop in which the difference between the desired exit dimension and the calculated instantaneous size of the gap is integrated, and an anticipatory loop in which the difference between the desired entry dimension and the actual entry dimension, measured by further detectors 13 and 2, is determined and integrated. The error signals of each loop are combined and control a rolls position closed loop servo system, which allows for the load on the rolls and the mill spring constant. The detectors have infrared sensors. To ensure that the roll gap, which is circular in cross-section, is neither under nor over filled the dimensional error signal in the feedback loop is modified if necessary by the inverted error signal relating to the opposite dimension, i.e. for stand A the normal error signal from detector 1 is modified by the inversion of that from 2. Thus an error in the rolled dimension is accepted if necessary to keep the gap properly filled. Both dimensional error signals are applied through potentiometers which are adjusted by a servomotor according to the speed of the rolls, measured by tachogenerators. Signals from detectors 1 and 2 are used also for " mass flow " control, in which the speed of the stands in the roughing mill preceding stand A is adjusted if necessary to keep the stock entering A within limits which can be corrected by the gap control system. During such adjustment the gap control system is inhibited. A combination of " both high " or " both low " is detected by a logic circuit 125, Fig. 4, and causes a digital clock 129 to produce pulses of appropriate polarity. A selected proportion of these are counted by a reversible counter 131, the count in which controls a servomotor for speed controlling potentiometer 134. Ganged to this is a potentiometer 135 which adjusts the proportion counted; this produces an exponential relationship in which the speed is changed at a rate proportional to the desired speed. Potentiometer 134 varies the field of D.C. roughing mill motors and a further ganged potentiometer (147, Fig. 5, not shown) adjusts rectifiers supplying their armatures. If any roughing mill motor speed reaches its maximum further acceleration is prevented and the speed of the finishing mill is reduced instead.
Patent GB-884875-A (GB)
Title: Portable profiling tool
Inventor: POTTER NATHANIEL D
IPC: B27C5/10
Filed: 1960-05-10
Abstract: 884,875. Woodworking. BLACK & DECKER MANUFACTURING CO. May 10, 1960, No. 16478/60. Class 145. A portable tool for moulding, grooving or veneer trimming is provided with a pair of adjustable guides 7, 8 for bearing at right angles to each other on the workpiece 26 and at least one of the guides is formed to permit observation of the tool and the immediate area of the workpiece. In Fig. 1, the upper guide 8 is of L-shape, one leg having a slot 37 in which is positioned an eccentric cam 30 with a handle 31 for adjusting the guide vertically, the adjustment being locked by tightening the cam mounting screw 32, and the other leg being of semi-cylindrical form and having observation cut-outs 36. The lower guide 7 comprises a roller bearing 11 on a shaft 12 carried by a slotted block 13 which is adjustable on a mounting stud 18 on the motor fan cover 2 by means of a collar screw 14 engaging a tapped hole 20 in the cover, the adjustment being locked by a screw passing through a slot 23 in the block 13 into a threaded hole 24 in the stud 18. In Fig. 6, the upper guide is similarly adjusted but is provided with a shaft 42 carrying a bearing 41. The lower guide comprises a flat plate 44 on a collar 45 slidable on the stud 18 and locked in position by a screw 47 passing through a slot 46 into a threaded hole in the stud.
Patent GB-580465-A (GB)
Title: A screwed socket device to be embedded into concrete and other moulded bodies
IPC: F16B37/04
Filed: 1944-08-30
Abstract: 580,465. Screw sockets. MADGER, A. W. Aug. 30, 1944, No. 16483. [Class 89 (i)] A device for securing a nut in concrete &c. comprises a strip of metal bent to U-shape the side limbs 1 being holed adjacent the base 2 to receive and retain a nut by its corners 7. The ends of the limbs may be bent outwards at 3 or may be bent round reinforcing rods in the concrete. The limbs may be perforated, twisted or otherwise formed to increase the hold in the concrete.
Patent GB-240771-A (GB)
Title: Improvements in padlocks
IPC: E05B67/10
Filed: 1925-06-26
Abstract: 240,771. Ringelhan, G. June 26, 1925. Padlocks; lock mechanism.-The tumblers 13, 14 of a padlock are pivoted in a shell 9 which carries the lock bolt 10, and is displaced in the casing against the action of a spring 6 by a key 20. Projections 24 on the key press against projections 17, 19 on the tumblers 13 to withdraw them from engagement with fixed pieces 8 and the end of the key withdraws an additional tumbler 14 and slides back the shell so that the bolt 10 disengages the shackle 3. A spring 5 holds the bolt withdrawn till depressed by the shackle on closing, and the key cannot be withdrawn till the bolt is shot. The tumblers, preferably four in number, are chosen from a set of ten whose projections 17, 19 are situated at different distances from the pivoted end 16, and which are numbered 0-9, the numbers of the tumblers employed being also impressed on the key to identify the latter.
Patent GB-142152-A (GB)
Title: Improvements in artists' air brushes
IPC: B05B7/12
Filed: 1919-07-04
Abstract: 142,152. Jones, T. D., and Kelly, M. July 4, 1919. Air-pressure sprayers.-Relates to air brushes of the kind in which the air supply is controlled by a finger-piece A, movement of which also actuates a needle valve M through a lever. A bush J is provided forming a guide for the air-valve spindle G and serving to position the end of the trigger, which carries a link L abutting against the collar K<2> on the spindle of the needle valve.
Patent GB-601170-A (GB)
Title: Improvements in internal combustion turbine plant for propulsion
IPC: F02C3/067
Filed: 1945-06-28
Abstract: 601,170. Propelling ships and aircraft. SMITH, D. M., and METROPOLITANVICKERS ELECTRICAL CO., Ltd. June 28, 1945, No. 16553. [Classes 4 and 114] [Also in Group XXVI] In a gas turbine plant comprising an axial flow compressor 1, an annular combustion chamber or group of annularly arranged combustion chambers 2, a turbine 4 driving the compressor 1 and a two-stage turbine 8, 9 in axial alignment and in which each stage of the turbine 8, 9 is direct coupled to an element of a contra-rotational pusher airscrew 10, 11, the exhaust ducts 15 finally leaving the power turbine are flared with respect to the plant axis so that either the hot gases will mix with the external air and flow therewith through the airscrew or said ducts have a large radial component so that the gases flow outside the peripheries of the airscrews. There may be provided more than two ducts 15, which may be annularly distributed around the axis. The ducts 15 are preferably of streamline form.
Patent GB-186131-A (GB)
Title: Improvements in cylinder-stops for revolving fire-arms
IPC: F41C3/14
Filed: 1921-06-17
Abstract: 186,131. Murray, F. T., and Fearn, J. W. June 17, 1921. Breech actions revolving-chamber.-A double cylinder-stop system for revolvers comprises a back stop b on the trigger-blade and a front stop c<2> on a spring-pressed lever c'. The. lever c<1> carries a sliding spring pawl c<3> adapted to be engaged by a projection a<1> on the trigger-blade in such a manner that when the trigger is pulled the lever c<1> is first depressed and then released. At the firing instant, the cylinder is held by both stops. The front stop lever is pivoted in a recess machined in the underside of the frame.
Patent GB-385863-A (GB)
Title: Improvements in or relating to short wave receivers
IPC: H03D11/02
Filed: 1932-06-13
Abstract: 385,863. Valve amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London.-(Assignees of Grimes, D. ; 1639, Richmond Road, Dongan Hills, Staten Island. New York, U.S.A.) June 13, 1932, No. 16706. Convention date, June 12, 1931. [Class 40 (v).] A wireless receiving valve 17 has a reaction path 32, 11, 16 between the output 33 and input circuits 16, 18, and means 25, 26 associated with an additional grid electrode to control the reaction. The reaction coil 11 also serves to couple a high-frequency amplifier 1 to the detector 17. The potentiometer 26 controls the voltage on the screening-grid and hence the reaction. High-tension is obtained from an alternating-current source S through a rectifying-valve 35 with buffer capacities 50 of such magnitude, for example 0À01 microfarads, as to suppress high harmonics of the order of the frequency to which the input circuit 16, 18 of the detector is tuned, namely 3000 kilocycles.
Patent GB-297497-A (GB)
Title: Improvements in or relating to mutes for stringed musical instruments
IPC: G10D3/04
Filed: 1927-06-23
Abstract: 297,497. Keuwez, A. June 23, 1927. Stringed instruments, mutes for.- A mute for a violin, &c. comprises a flat metal block 2 which has line or point contact at its edge 2<h> against the bridge. The block is formed with two 'wings 2<b> slotted at 2<g>, which are clamped by a screw 2f against the supporting-rod 2<a> when the block has been set at the required angle on its pivot 2d. The rod 2<a> is adjustable at 13 on a rod 11 connected by a spring 10 to a link 7, 6 which is moved horizontally when a button 3 is depressed by the chin to apply the mute, a spring 8 returning the parts to normal position. The mute may be retained applied, by engaging a notch 4a with the edge 15a of the slot 15<b>. The mute may be arranged on the upper side of the rail-piece. The button 3 may be rigidly mounted on the rod 6. In applying the mute to a violincello, a Bowden wire, operating by pressure or traction, is used.
Patent GB-428736-A (GB)
Title: Improvements relating to curtain rails
IPC: A47H1/06
Filed: 1934-06-07
Abstract: 428,736. Curtain rails. JOHNSTON, A., Henderson House, Bridge of Allan, Stirling- shire. June 7, 1934, Nos. 16897 and 31338. [Class 52 (v)] [See also Group XXX] Telescopic curtain rails of the type having base flanges tracked by rollers comprise a pair of parallel rails 1, 4 disposed side by side, with the base flanges 2, 5 spaced apart so as to avoid interference between the rollers tracking the respective flanges and allow the curtains to overlap. One rail 1 is provided with a lateral tongue 3 engaging a bifurcated part 6, 6<1> of the other rail 4, the limb 6<1> having a downturned flange 8. The rails may be slid endwise relatively to each other. The tongue 3 may be extended to the other side of the rail 1 and the part 6<1> correspondingly shaped.
Patent GB-439884-A (GB)
Title: Manufacture of textile fabrics coated or impregnated with polymerisation products
IPC: D06M15/244
Filed: 1934-06-07
Abstract: Fabrics are coated or impregnated with a homogeneous aqueous suspension of a polyvinyl chloride or a water-insoluble mixed polymerization product of vinyl chloride and a derivative of acrylic acid, the water is evaporated and the particles of the polymer are caused to coalesce by heating under pressure, e.g. 100 kilos per sq. cm. at a temperature above the softening point of the polymer, e.g. 80--150 DEG  C.  An example describes the use of an artificial latex made by polymerizing a mixture of vinyl chloride and acrylic acid methyl ester to which zinc white, a proportion of the solid powdered polymer and, if desired, a softening agent are added and working into the form of a homogeneous dispersion in a plate mill or colloid mill. The product may be used for making shoe stiffeners or collars.
Patent GB-972199-A (GB)
Title: Improvements in or relating to transmission devices
IPC: F16H57/025
Filed: 1962-05-02
Abstract: 972,199. Toothed gearing. ETABLISSEMENTS VENOT & CIE. May 2, 1962 [May 10, 1961], No. 16922/62. Heading F2Q. Reduction gearing in a casing 5 is pivotally mounted on a driven shaft 11 of a hoist drum 12, and torque reaction is provided by a casing rib 21 embedded in a fixed block 22 of elastic material. The casing 5 contains coaxial input and output gears 6, 10 and layshaft gears 7, 9. The gearing is driven from a motor 1 through an elastic coupling 3. The pivotal movements of the casing 5 may be utilized to indicate the direction and magnitude of the torque reaction.
Patent GB-1117032-A (GB)
Title: A new polyoxyethylene glycol based product
IPC: C08J3/28
Filed: 1966-04-19
Abstract: A polyoxyethylene glycol based polymer is prepared by ionization irradiation of an aqueous solution of said polyglycol using an irradiation dose output higher than a predetermined critical output at which critical point the viscosity of said aqueous solution remains substantially constant in the course of the irradiation.  g -Rays originating from a radiocobalt 60 source may be used as the ionization radiation.  Concomitantly with the irradiation an impoverishment of the solution in respect of oxygen may be effected, for example by degasifying said solution.  The product is essentially a three-dimensional cross-linked polymer in the form of a jelly retaining the water of solution, swelling in water and remaining insoluble in water. Water may be eliminated from the jelly by the addition of potassium fluoride or calcium chloride giving powders, or by sublimation giving a porous polymer which swells rapidly when again placed in water.  The jelly may be used as a carrier for fertilizers and may also form a basis for pharmaceutical and cosmetic preparations.ALSO:A plant growth medium comprises g -irradiated water-swellable polyoxyethylene glycol and sand or earth.
Patent GB-1063034-A (GB)
Title: Improvements in or relating to electrical resistors
Inventor: MARTY ROBERT SAMUEL
IPC: H01C7/00
Filed: 1964-04-24
Abstract: An electrical resistor comprises a substrate of barium titanate to which is applied an underlayer of a boro-silicate of general formula Na2O, BaO, B2O3, Al2O3, SiO2 mixed with an equal part by weight of "Pyrex" (Trade Mark).  A suitable carrier consists of 5% by weight of ethyl cellulose and 95% pine oil.  The mixture may be 25% by weight of carrier and 75% inorganic material.  All traces of the carrier are evaporated or burned out during subsequent operations. The frit fuses at between 1800 DEG  and 1900 DEG  F.  A resistive film and electrodes are applied to the underlayer and an overlayer of vitreous glaze applied to the resistive film and adjacent portions of the electrodes so as to come into contact with the underlayer. The overlayer material is preferably a lead boro-aluminium silicate and fires at a temperature of about 1100 DEG  F.
Patent GB-428650-A (GB)
Title: Improvement in dictating machines
Filed: 1934-06-09
Abstract: 428,650. Phonographic dictating- machines. DICTAPHONE CORPORATION, 375, Howard Avenue, Bridgeport, Connecticut, U.S.A.-(Assignees of Beard, T. H., and Renholdt, J. E. ; Bridgeport, Connecticut, U.S.A.) June 9, 1934, No. 17153. Convention date, June 24, 1933. [Class 40 (ii)] The sound-box 30 of a dictating-machine is provided with a recording stylus 31 and reproducing stylus 31<1> and is adapted to be positioned in neutral or for recording or reproducing. The tone-arm 29 carrying the sound box is pivotally mounted in a slide 25 which is coupled at 33 to a ring lever 32 mounted on the carriage rod 22 and actuated by a lever 20 through a link 76, Fig. 3, bell-crank 78 and curved link 81 constituting a reducing motion train. A cam 37, Fig. 5, on the ring lever engages a member on the feed nut 38 so that when the sound-box is in neutral position the feed nut is withdrawn from the screw 39 thus allowing the carriage to be moved by hand. Specification 421,036 is referred to as showing clutch mechanism and the cover used in the machine. A pointer 73 adjacent the lever 20 indicates the neutral position of the sound box.
Patent GB-564029-A (GB)
Title: Improvements in or relating to revolution and like counters
IPC: G06M1/00
Filed: 1942-12-02
Abstract: 564,029. Stop watches. VICKERS. ARMSTRONGS, Ltd., and WILKINS, H. C. Dec. 2, 1942, No. 17161. [Class 139] [Also in Group XIX] A revolution counter is associated with means for indicating the periods of time over which the revolutions are counted, the counter being connected and disconnected by an electricallyenergized device, the switch controlling this device being arranged to control also the starting and stopping of the time-indicating means. Movement of a hand lever 21, Fig. 3, into the " start " position slides a cam bar 23 to start a stop watch 27 and also closes contacts in the circuit of the winding 10, Fig, 1, of an electromagnetic clutch 15. An armature 8 is thus slid along a square part of a shaft 4 to couple the shaft to a hub 3 connected by worm gearing 2 to the shaft 1 under test. The shaft 4 drives a pointer 5 and drums 18 indicating number of revolutions. Movement of the hand lever 21 to the " stop " position slides the cam bar 23 to stop the watch 27, breaks the circuit of the winding 10 and closes the circuit of an opposing winding 11. This causes the armature 8 to slide to the left to declutch the shaft 4 from the driven hub 3 and, by reason of the contact between the armature 8 and a fixed part 12 to hold the shaft 4 against rotation. The revolutions indicator 5, 18 may be zeroized manually when the circuits of both windings 10, 11 have been broken by a switch 17. The stop watch is mounted in a spring support 28 adjusted by a screw 29 and is reset by a manually-operated lever 26.
Patent GB-138268-A (GB)
Title: Improvements in or relating to closure members or devices, applicable for use in connection with poultry nests and the like
IPC: A01K31/16
Filed: 1919-07-09
Abstract: 138,268. Bland, O. T. July 9, 1919. Poultry houses; nests. - Relates to closure devices for trap-nests or the like of the type in which a sliding door is held open by a pivoted catch released by a hanging frame moved by the hen and consists in pivoting the catch and the hanging frame on separate axes. The catch e engages automatically with the lower edge of the door d or with a projection or a slot d', when the door is raised by means of a knob or handle i. The catch e is secured at f to a transverse spindle which is bent over at each end outside its bearing to prevent longitudinal movement. A crank g passes through a slot e' in the catch, being pivoted at g<1> and carrying depending arms g<2> which are displaced by the fowl entering the nest, causing the withdrawal of the catch. The pivots of the catch and crank may be mounted on a detachable plate h.