baber/WOPTO huggingface dataset:
Patent GB-1438931-A (GB)
Title: N-substituted 1,4-dihydropyridine compounds
IPC: C07D211/90
Filed: 1975-02-19
Abstract: 1438931 N-substituted 1,4-dihydropyridines SMITHKLINE CORP 19 Feb 1975 [21 Feb 1974] 6981/75 Heading C2C The invention comprises compounds of formula wherein R 1  is C 1 -C 4  alkyl; R 2  is C 1 -C 4  alkyl or alkoxy; R 3  is Ph (possibly substituted by 1-3 C 1 -C 4  alkyl or alkoxy groups, by 1-2 of F, C1 or Br atoms, or by CF 3 , N0 2  or CO 2  alkyl), C 5 -C 6  cycloalkyl or cycloalkenyl, or pyridyl; and R 4  is C 1 -C 4  alkyl or alkoxy, C 5 -C 6  cycloalkyl, Ph or di(C 1 -C 4  alkyl)amino. These compounds are prepared by reacting the N-unsubstituted analogue with R 4 COX where X is halogen. Therapeutic compositions having hypotensive activity comprise compounds of the above formula and may be administered orally or parenterally.
Patent GB-131086-A (GB)
Title: Improvements in or relating to Ordnance Sighting Apparatus.
Inventor: DAWSON ARTHUR TREVOR
Filed: 1917-03-19
Abstract: 131,086. Dawson, Sir A. T., and Buckham, Sir G. T. March 19, 1917. Sights.-Relates to sights of the kind in which adjustment for speed of gun platform is effected by an horizontal crank provided with an adjustable pin operating upon the sight arm, the crank being maintained in a fixed angular position during the training of the gun by mechanism interposed between the crank and a fixed part of the gun platform. According to the invention, the interposed mechanism comprises a rotary shaft and universal transmission joints. In the construction shown, the crank B, which acts upon the sight arm A, is carried by an upright telescopic rod B<1>, B<2>, rotation of which is prevented by a shaft C connected to the bottom of the rod B<2> and to a fixed part of the gun platform C<3> by Hooke's joints C<1>, C<2>. The crank may be made adjustable for drift and wind.
Patent GB-114068-A (GB)
Title: A New or Improved Device for Sweeping Swimming Baths and the like.
Inventor: WHITEHEAD SMITH
IPC: E04H4/16
Filed: 1917-05-16
Abstract: 114,068. Whitehead, S. May 16, 1917. Buildings and the like, cleaning.-Apparatus for sweeping the floors of swimming-baths &c. comprises a wide brush 1 with forwardly curved ends connected to a framework 5 to which is attached a front steering-wheel 8 and a pair of rear wheels. The draw-bar 11 is fitted on a steering pillar 9, the height of which can be adjusted by collars 14, 15 embracing the. sleeve 16 and secured by set-screws 13. The apparatus is drawn round the bath in narrowing convolutions until the sludge is brought to the central discharge outlet. Specifications 1590/70 and 24788/02, [both in Class 107. Roads &c.], are referred to.
Patent GB-798707-A (GB)
Title: Heat exchanger and method of making same
IPC: F22D1/16
Filed: 1956-03-06
Abstract: 798,707. Making heat exchangers. BABCOX & WILCOX CO. March 6,1956 [March 17, 1955], No. 7037/56. Class 83 (2). [Also in Group XIII] Relates to a heat exchanger (see Group XIII) comprising an elongated cylindrical pressure vessel 12 containing a bundle of U-tubes arranged in groups 25, the tubes passing through the vessel wall and being connected to inlet and outlet header chambers 30 for each group arranged along the vessel wall. A method of making such a heat exchanger comprises forming two plates each into one half of the cylindrical vessel, arranging one half of the heat exchange tubes of the tube bundle so that laterally extending end portions 26 of said tubes pass through the wall of one said half of the vessel, similarly arranging the other half of the heat exchange tubes 2 so that laterally extending end portions 26 of these tubes pass through the wall of the other half of the vessel, placing the two halves together to enclose the tube bundle, securing together these halves by two longitudinal seam welds (Fig. 3, not shown) and attaching end portions 14, 16 to the vessel to enclose same.
Patent GB-506448-A (GB)
Title: Improvements in or relating to coke oven door operating mechanism
IPC: C10B25/14
Filed: 1938-03-07
Abstract: 506,448. Coke-oven doors. KOPPERS CO. March 7, 1938, No. 7100. Convention date, March 6, 1937. [Class 55 (i)] A flexible or resilient member, such as a leaf-spring assembly 33 for securing a cokeoven door in position and engaging with hook means in the manner of a latch, is clamped by mechanism which successively grips, flexes and releases the member so that the door may be unlatched, and then latched by resetting the member in latching position. Such a member is described in Specification 506,449, [Group XVIII]. The door 11 is pressed against its seat by spring latches 33 engaging with hooks 28, and bearing against a bracket 30 secured to the door face. The latch assembly 23 is contained in a yoke 34 and casing 35 held together by a bolt 38, and to flex the springs so that the assembly may be removed, a power driven clamping device is provided comprising jaws 67, 68. A stage 59 supports a motor 64, speed reducer 65, thrust bracket 66, the fixed jaw 67 and the jaw 68 in one piece with an internally screwed extension 72 sliding on the stage, and caused to move by rotation of a screw-threaded shaft 73. A clamping assembly mounted on a stage 59 is provided for the upper and lower latching means, and the stages are supported by brackets 60 from the door machine, on which brackets they are supported by crankshafts 61. In operation, bumper 50 is caused to engage with bumper plate 51, motor 54 is started, and, by gearing 56, 58, raises door hook 52, and, by links 62, 63, rotates stages 59 around crank-shafts 61 until the jaws 67, 68 engage the yokes of the spring latches 33. The door hook drive is stopped, and motor 64 started, so that the jaws 67, 68 compress or straighten the spring assembly and release it from the hooks. Motor 64 is then stopped, and motor 54 re-started, thereby further elevating the door hook 52 to engage with the hook plate 78.. This operation effects further rotation of the connected stages 59 about their shafts 61, and lifts the flexed spring latches in the jaws 67, 68. The door may now be withdrawn from the oven mouth by moving the door machine outwardly. To re-fit the oven door, the above steps are repeated in reverse sequence. Limit switches may be provided to control movement automatically of the moving parts, and one source of power may be used for moving both the jaws and the door hook.
Patent GB-1531187-A (GB)
Title: Mowing machine
IPC: A01D57/20
Filed: 1977-02-21
Abstract: In this machine, the front part is equipped with a mowing unit. The cut material cut by the mowing unit (1) and treated by a conditioning drum (2) is accelerated rearwards and conveyed further in a conveying channel. Arranged in the flight path of the cut material is a baffle wall (5) which is formed by a single wide conveyor band (6) closed on itself. As a result of the momentary adhesion to the front strand of the conveyor band, the cut material is deflected and is discharged to the side before it can fall to the ground. The flight path of the cut material varies according to the inclination or pivoting of the baffle wall (5) relative to the ground surface and/or to the variable speed of the band (6). This assists the depositing of the cut material in swathes; moreover, a differing loosening of the cut material is obtained. <IMAGE>
Patent GB-854597-A (GB)
Title: A grid-controlled gaseous discharge device
IPC: H01J17/20
Filed: 1958-03-06
Abstract: 854,597. Thermionic-cathode tubes. TESLA NARODNI PODNIK. March 6, 1958 [March 6, 1957], No. 7237/58. Drawings to Specification. Class 39(1). A tacitron, i.e. a thyratron in which the control grid has openings of a size comparable with the thickness of the Langmuir layers thus enabling the discharge to be cut off with a small negative grid bias even in the case of maximum anode current, has a filling consisting substantially of hydrogen. It is stated that contrary to published theory which indicated that a gas with a high atomic weight should be used in tacitrons, and led to the general use of xenon or mercury vapour, hydrogen is a suitable filling and enables higher powers (up to 1 KW continuous or 15 KW pulsed) to be controlled. Cut-off characteristics and curves plotting tube drop and controlled voltage against gas pressure are given for xenon and hydrogen.
Patent GB-1161761-A (GB)
Title: Improvements in Machine Tools
Inventor: SHAVE DEREK
IPC: B23Q5/26
Filed: 1966-02-18
Abstract: 1,161,761. Lathes. ASSOCIATED ENG. Ltd. 17 Feb., 1967 [18 Feb., 1966], No. 7342/66. Heading B3T. A machine tool such as a lathe having a saddle and a tailstock in which the tailstock can be caused to move together with the saddle comprises an hydraulic motor 2 for driving the tailstock 1, the fluid supply to the motor being controlled by a servo valve 6 actuated by a control piston 9 of an hydraulic biasing cylinder 10 through a pivoted lever 7. The movement of the piston 9 is effected by selectively supplying hydraulic fluid to the inlets at each end of the cylinder which controls the fluid supply to the motor so as to drive the tailstock in either direction. The movement of the tailstock can be terminated by abutment of a stop 11 on the piston rod with a stop 14 on the machine or the tailstock can move with the saddle by cooperation between the stops 12 and 11 on the saddle and tailstock respectively provided the hydraulic pressure is maintained at the appropriate end of the cylinder 10.
Patent GB-197125-A (GB)
Title: Improvements in machines for winding yarn, thread, twine and the like
IPC: B65H54/36
Filed: 1922-03-14
Abstract: 197,125. Baines, E. N., and Schmidt, J. W. March 14, 1922. Winding - machines. - Yarns, threads, &c. are wound into cross - wound cops, cheeses, &c. on a non- revolving spindle a by means of a revolving flyer b, the flyer or the spindle being reciprocated as the cop is wound. The spindle a is secured to a spindle rail a<1>, and the flyer b is fixed to a bar c, which is secured to the end of a hollow spindle d, and is driven from a shaft d' through gears d<2>, d<3>. The flyer spindle d is carried by a rail k<1> and is reciprocated by means of a lever j, which is connected by a link k to the rail k<1>, the lever j being actuated by a face-cam f. The flyer b is provided with a swinging arm m, Fig. 5, which acts as a yarn-guide and which, by the action of a spring n, presses the yarn as it is being wound. The yarn is guided by a grooved fitting m<2> and through a triangular aperture m<3>. In an alternative arrangement the spindle a is reciprocated to build the cop, the flyer being only rotated. The spindle a may be horizontal, vertical, or inclined.
Patent GB-541963-A (GB)
Title: Improvements in or relating to two-stroke fuel-injection internal-combustion engines
IPC: F02M69/00
Filed: 1940-04-24
Abstract: 541,963. Oil engines. ROWLEDGE, A. J. April 24, 1940, No. 7414. [Class 7 (iii)] A fuel-injection engine in which the charge of air or fuel, or both, are given a swirling motion has the combustion chamber of cylindrical form and the injector so arranged that the fuel particles become driven towards the periphery owing to centrifugal action, the spark plugs being arranged at or near such periphery. Fig. 1 shows a two-stroke engine having a sleeve valve controlling exhaust ports 14 and inlet passages 15 which are tangentially arranged to give the air a swirling movement, spark plugs 20, 21 being arranged at the periphery of the cylindrical combustion chamber which is bounded by the flat cylinder bead and the flat top of the piston. Tne wall of the combustion chamber may be conical as shown, and the spark plugs may be arranged at different radial distances from the cylinder axis.
Patent GB-1392924-A (GB)
Title: Optical scanning arrangement and article useful therewith
IPC: G06K7/10
Filed: 1971-03-23
Abstract: 1392924 Optical reader RCA CORPORATION 21 March 1972 [23 March 1971 (2)] 7590/71 and 7591/71 Heading G4M An apparatus for optically reading a label 10 is disclosed. The label 10 may be a sheet for glueing on to an article or may be directly printed on an article 30 for use in supermarkets (e.g. an aerosol can, a bag of vegetables). Binary digits are printed thereon in concentric white and black (or other different coloured) circles of standard width, the thicker circles representing more than one 0 or 1 together. Four circles represent a decimal character e.g. representing weight, size, manufacturers code, brand name &c. and there are preamble and postamble sections 12, 16 respectively. The coding is arranged so that there are no more than 4 adjacent 0's or 4 adjacent 1's. In the scanner, the article is passed over a slot 36 by a conveyer and a light source (e.g. a laser) emits a visible (or near visible) beam which is reflected from a motor driven rotable mirror 52 through the slot 36. The beam is reflected from the article 10 and passes through a filter 60 to a photomultiplier 62 which produces a series of electrical signals 66 which represent the light reflected from the article. Transition detectors 68, 70 detect white/black, black/white transitions (i.e. 1/0, 0/1) and their outputs are connected through flip-flop 72 to a shift register 82, and to OR gate 74. The latter is connected to a clock generator 79 including two monostables 76, 77. The circuit 79 produces a clock pulse to gate each data bit into shift register 82. A counter may be used to ensure that the scan has gone across the centre of the label. The label may be scanned from side to side so that two versions of the data are obtained which can be compared with each other. Alternatively, the data can be scanned twice from the outside to the centre and a comparison made. In this latter case the lower half of the circles may be omitted or different data put there instead.
Patent GB-986705-A (GB)
Title: Improvements in or relating to processes of manufacturing files having crossed notches
IPC: B23D73/00
Filed: 1963-02-26
Abstract: 986,705. Making files. ST. EGYDYER EISENUND STAHT-INDUSTRIE-GESELLSCHAFT. Feb. 26, 1963 [March 1, 1962], No. 7608/63. Heading B3A. A process of making double cut files is characterized in that the overcut grooves are formed by rolling the file body and the upcut grooves are made with a file cutting machine. Greasing before the upcut and the impressing of the manufacturer's marks may be effected in one operation together with the pattern-rolling step. Teeth may be rolled simultaneously on two or more sides of the file.
Patent GB-557977-A (GB)
Title: Improvements relating to power-drawn cultivators and the like
IPC: A01B63/04
Filed: 1942-06-05
Abstract: 557,977. Agricultural implements. TRACTORS (LONDON), Ltd., and CRAWFORD, D. June 5, 1942, No. 7703. [Class 6 (i)] Cultivators or the like 5 carried by a frame 3 pivoted to a tractor are raised by depressing a strut into engagement with the soil. The strut is pivoted to the frame 3 and is in two parts 9, 10 connected by a knee-joint and constrained to the straightened position by a spring 15. It is lowered by a handle 13a secured to a ratchet sector 13 integral with the sleeve to which the strut is attached. A second handle 22 has an extension forming a guide lip 26, against which the strut 9 presses on being lowered, and a bridge 25 which passes under the upper end of the strut sleeve 8. At the same time the spring 23 pulls the handle 22 back retaining the bridge 25 under the sleeve and engaging a locking pawl 21 with the sector 13. As the strut passes the vertical position, it bends at the point 11 ; the spring 15 rapidly raises it and after rebound from a frame stop 28, restores it to the rectilinear condition. From the raised position the frame 3 and associated tools are released by moving the lever 22.
Patent GB-892954-A (GB)
Title: Automatic battery charger
Inventor: WOLFF HEINZ SIEGFRIED
IPC: H02J7/00
Filed: 1959-03-05
Abstract: 892,954. Charging batteries. NATIONAL RESEARCH DEVELOPMENT CORPORATION. May 12, 1960 [March 5, 1959], No. 7749/59. Class 38 (4). Battery charging arrangement comprises means whereby when the battery is sufficiently charged the charging current is substantially reduced or cut off. A battery 18 is charged from a direct current source 11, 12 which is preferably stabilized and obtained from an alternating current source over rectifiers, the battery being charged over a normally conductive transistor T3. A further normally conductive transistor T1 enables a reference voltage to be developed by means of a Zener diode ZD and a variable resistor R4, this reference voltage being applied to the emitter 13 of a third transistor T2 to the base 15 of which is applied a potential, obtained from a potentiometer R2, dependent upon the battery terminal voltage. Whilst the battery 18 is being charged with transistors T1, T3 conductive the base and emitter potentials are such that transistor T2 is non-conductive. As the battery approaches its fully charged state the base potential of transistor T2 rises and transistor T2 begins to conduct and in a cumulative manner eventually becomes fully conductive thereby cutting off both transistors T1, T3 to cut off the charging current and reduce the reference potential produced by the diode ZD and resistor R4. Alternatively, the resistors R5, R7 may be given values whereby the conductivity of the transistor T3 may be reduced to a low level instead of being completely cut off, whereby a small charging current may be maintained. The reduction of the reference voltage when the charging current is cut off ensures that no continuous switching on or off of the charging current occurs due to the difference between the charging voltage and the battery open circuit voltage. Resistors R1, R3 may be of the type having positive or negative resistance characteristics. In a further embodiment a fourth transistor is situated between the transistors T2, T3. In yet another embodiment a fifth transistor is placed in the negative supply lead to provide a stabilized supply.
Patent GB-1106571-A (GB)
Title: Arrangement for coupling trailers to tra ctors having power lift mechanisms
IPC: B60D1/46
Filed: 1966-02-22
Abstract: A tractor power lift mechanism has an A-frame carrying a sling freely hanging therefrom by chains and arranged to lift a tow bar of a trailer into alignment with a coupling member on the tractor.
Patent GB-349175-A (GB)
Title: Improvements in the fuel supply for internal combustion engines
IPC: F02M27/06
Filed: 1930-03-10
Abstract: <PICT:0349175/III/1> Combustible mixture for use in internal-combustion engines is ionized by submitting it to the action of radio-active substances in the induction pipe.  The substance may be in the form of solids, granules, liquids or paints.  In one form it is contained in a holder 8 of gauze held between the flanges 11 of the piping leading from the carburetter 6.
Patent GB-601958-A (GB)
Title: Improvements in the manufacture of composite materials or articles
IPC: C08L61/10
Filed: 1944-04-26
Abstract: 601,958. Compound sheet materials. VENESTA, Ltd., BROWN, A. C., and ANGEL, T. H. April 26, 1944, No. 7792. [Class 140] [Also in Group XV] Composite materials having a metal layer or component part are made by interposing between surfaces to be united, of which at least one is of metal, a hardenable phenol-aldehyde condensation product in solid form and, as a solvent or softener for the condensation product, a lower aliphatic ester of phosphoric acid or an acetic acid ester of glycerine, and pressing with the aid of heat to flux and then harden the condensation product. The condensation product may be in the form of a solid film made by impregnating a thin fibrous material such as tissue paper with a condensation product of phenol or cresol with formaldehyde. The solvent or softener, which may be incorporated with the resin in the solid film or applied to the surface of the solid film or to one or both surfaces to be united, may be trimethyl. triethyl, or tributyl phosphate, mono or diacetin, and may contain a corrosion inhibitor, e.g., potassium, sodium or strontium chromate. Metals may be bonded to wood, resinimpregnated wood, veneer, or plywood. cork, rubber, metals, or fully hardened synthetic resinous sheets, e.g., phenol or urea-formaldehvde. When uniting metal to metal, two solid adhesive films may be used, and a layer of rubber or of fibrous material such as tissue paper, woven or knitted fabric may be interposed between the two films to improve adhesion. When uniting metal to a non-metallic material, a fibrous layer may be interposed between the adhesive film and the non-metallic surface. In examples, (1) a sheet of aluminium is united to a sheet of birch plywood, the aluminium sheet being degrease,d, lightly scratched, and coated with triethyl phosphate before assembly with a sheet of tissue paper impregnated with phenol-aldehyde resin, and the plywood, and hot-pressing, (2) a sheet of galvanised iron is etched with sulphuric acid solution containing butyl alcohol, washed, dried, coated with triethyl phosphate and united to birch plywood as in Example (1), (3) sheet aluminium is united to an inch thick slab of compressed cork as in Example (1). Other metal sheets specified include iron, steel, stainless steel, monel metal, nickel, tin, tin plate, lead, copper sheet may be oxidised, united by ash, or soft woods such as gaboon or obechi may be used. Oxide films may be transferred from oxidised metal sheets on to plywood or hardened synthetic resin, e.g., a copper sheet may be oxidised, united by the oxidised surface to plywood, and the copper sheet subsequently stripped off leaving the oxide coating. Specification 565,004, [Group II], is referred to.
Patent GB-381845-A (GB)
Title: Improvements in and relating to electric insulators
IPC: H01B17/20
Filed: 1932-03-16
Abstract: 381,845. Insulators. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Rowland, D. H. ; c/o Locke Insulator Corporation, P.O. Box A, Baltimore, U.S.A.) March 16, 1932, No. 7844. Convention date, March 17, 1931. [Class 36.] In order to avoid corona effects in a transmission line insulator,. a contractile or flexible split band of dielectric material carrying a metallic element is fitted in the tie-wire receiving groove. In the embodiment, a nested insulator is formed with a tie-receiving groove 15 in which is mounted a moulded mica band 16 having a metallic coating 17. In a modified construction, a copper foil sheet is interposed between inner and outer dielectric layers in the tie-receiving groove.
Patent GB-309286-A (GB)
Title: Improvements in or relating to radio apparatus
IPC: H04R3/04
Filed: 1928-03-14
Abstract: 309,286. Igranic Electric Co., Ltd., and Hodgson, A. D'A. March 14, 1928. Thermionic amplifiers -With the object of providing a variable stepup or step-down of voltage, the choke-capacity output coupling of the last valve v of a radio receiver is modified by providing variable tappings 4, 3, 2 on the choke k to which the hightension supply h, the valve anode, and the condenser c (in series with the loud-speaker s) are respectively connected.
Patent GB-651755-A (GB)
Title: Improvements relating to cathode ray tube scanning circuits
Inventor: PEMBERTON MAX ERIC
IPC: H03K4/28
Filed: 1948-03-17
Abstract: 651,755. Impedance networks. ELECTRIC & MUSICAL INDUSTRIES, Ltd. March 17, 1948, No. 7938. [Class 40 (viii)] In a cathode-ray scanning circuit including an inductive element damping means are provided across this inductance to damp oscillations set up by shock excitation during return strokes. In the apparatus shown the inductance is the primary of transformer 6 and the damping means are resistances 17, 18 and 19, which shunt sections 14, 15 and 16, into which the primary is divided. An additional damping resistance 21 may be shunted across the others. A condenser 22 may be shunted across one section of the inductance to alter its resonant value. Further shunting condensers may be provided. If the resonant frequencies of several of the sections are equal, their separate damping resistances can be omitted and their damping is effected by common resistance 21.