baber/WOPTO huggingface dataset:
Patent GB-675069-A (GB)
Title: Improvements in or relating to electron-discharge tube circuit arrangements
IPC: H04Q1/18
Filed: 1950-06-09
Abstract: 675,069. Valve relay circuits. PHILIPS ELECTRICAL INDUSTRIES, Ltd. June 9, 1950 [June 14, 1949], No. 14445/50. Class 40 (vi). The coupling between the two valves of a trigger pair comprises a parallel network of two oppositely directed and differently biased rectifiers. One rectifier is conductive when a control voltage exceeds a first limit, while the other is conductive when the control voltage is less than a second limit of lower value than the first. In this manner the feed-back path is operative as long as the control voltage is outside the limits so that the circuit takes up stable states with one or other valve fully cut-off. Between the limits the rectifiers are both non-conducting so that feed-back does not take place and both valves conduct. The circuit may be employed for producing pulses of constant amplitude from an alternating voltage. With the control voltage applied at terminal 1 at a large negative value, valve B1, Fig. 3, is cut off, the anode potential rising towards the supply causing rectifier g3 to conduct and raising the grid potential of valve B3 so that relay TR operates. The high anode potential of valve B1 results in rectifier g2 conducting, thus holding the grid potential of valve B2 positive and maintaining the valve in its conducting state. As the grid voltage of valve B1 is raised passed cut-off the anode potential falls, causing the grid potential of valve B2 to rise and, due to the coupling resistor R1, valve B1 is driven further into conduction. This regenerative process is arrested when the anode potential of valve B1 falls sufficiently for rectifier g2 to cease conducting. Since both valves are conducting, their anode potentials are relatively low and valve B3 is cut off so that relay TR is released. The anode potential falls slowly with further increase in grid potential of valve B1, Fig. 2b (not shown), until rectifier gl conducts when the feed-back loop is again operative and valve B2 is driven beyond cut-off, the rise in anode potential of valve B1 causing relay TR to operate again. In a modification, Fig. 4 (not shown), the cathode coupling resistor is dispersed with and the grid of valve B1 is coupled to the anode of valve B2 over potential divider while the anode of valve B2 is back coupled to the screen grid of valve B1. A battery may be used for coupling, Fig. 1 (not shown). In a further modification, Fig. 5 (not shown), a bridge of rectifiers is used between the anodes of valves B1, B2, the relay TR being arranged in the opposite diagonal. Specification 662,215 is referred to.
Patent GB-1359452-A (GB)
Title: 1- 3-hydroxyphenyl - 2-amino-propanes
IPC: C07C215/52
Filed: 1973-03-26
Abstract: 1359452 Aminopropane derivatives BOEHRINGER MANNHEIM GmbH 26 March 1973 [30 March 1972] 14462/73 Heading C2C m - Hydroxyphenyl - 2 - (ethyl and isopropyl)- aminopropane and their salts are prepared by standard methods, e.g. by demethylation of the methyl ethers. The preparation of the ether starting materials is described. The above compounds are sympathomimetics, and may be administered in the form of pharmaceutical preparations containing them in association with a carrier.
Patent GB-456978-A (GB)
Title: Improvements in electrically operated sliding weight scales
IPC: G01G1/38
Filed: 1935-05-17
Abstract: 456,978. Weighing-apparatus. DEUTSCHE VERSUCHSANSTALT FUR LUFTFAHRT E. V., Adlershof, and KRAMER, M., 3, Thelenstrasse, Adlershof, Berlin. May 17, 1935, No. 14515. [Class 143] Sliding-weight apparatus.-In an electricallyoperated sliding-weight scale, an electric motor is coupled to an eddy current brake and the electrical connections are arranged so that, in the vicinity of the equilibrium position the rotation speed of the fully energized motor is reduced solely by the eddy current brake whilst in the case of considerable disparities in equilibrium the motor works at high speed unrestricted by the eddy current brake. The weighing beam, mounted on a fulcrum L carries at one end a flexible fine-adjustment contact Wf and a coarse-adjustment contact Wg. The motor M, coupled to the eddy current brake B is also carried by the beam and drives the poise weight G by means of a screwed spindle S. In operation, the application of the load P closes both contacts Wf, Wg so that the eddy current brake is short-circuited and the poise weight is propelled at high speed. In the vicinity of the equilibrium position the beam opens the coarse-adjustment contact Wg and the eddy current brake is energized to reduce the motor speed to a creeping travel of the poise and after a few revolutions the motor is stopped by the opening of the fine-adjustment contact Wf. A resistance Rm is permanently incorporated to protect the motor against excess currents, and a resistance Rb is inserted in the brake circuit.
Patent GB-611953-A (GB)
Title: Improvements in or relating to the manufacture of electrical induction apparatus
IPC: H01F27/25
Filed: 1946-05-14
Abstract: 611,953. Winding transformer cores. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. May 14, 1946, No. 14529. Convention date, May 19, 1945. [Classes 83 (ii) and 83 (iv)] [Also in Group XXXV] A magnetic core for a transformer &c. is made by winding simultaneously on a former 13 a strip 2 of magnetic material and a narrow strip or thread 11 of cotton or other fibrous material, magnesium &c. of a thermally dispersible nature positioned inwardly from the edges of the strip. After winding, the core is annealed at a temperature above 500‹ C. in a hydrogen atmosphere to remove strain and to decompose the spacing material. The hydrogen may be circulated to sweep out gaseous impurities. The spaces between the layers are then impregnated with a bonding material which is then baked.
Patent GB-296464-A (GB)
Title: Improvements in and connected with electric induction furnaces
IPC: H05B6/06
Filed: 1927-05-30
Abstract: 296,464. Northrup, E. T. May 30, 1927. Controlling consuming devices.-An induction heating plant comprising a number of heaters or furnaces k<1> - - k<4>, connected in parallel, is provided with individual power-factor correction means for each inductance coil and means for connecting the power supply to a set of turns different from those connected to the powerfactor correction means. Each coil is provided with tappings q co-operating with contacts p to which the power is supplied, and a condenser r connected across the ends of the coil. The contacts p are connected to change-over switches u by means of which the furnaces may be connected with the main bus-bars m or bus-bars s connected to the main supply through a transformer t. Adjustable condensers n are connected across the main bus-bar for ergulating the power factor. The provision of the tappings q enables part of each furnace coil to be put in series with its condenser r. Surging of current from one furnace to another is thus reduced. The centre of each coil may be earthed and its condenser r subdivided into two parts arranged between each end of the coil and the earth connection.
Patent GB-586281-A (GB)
Title: Improvements in or relating to presses for vulcanizing pneumatic tyres and inner tubes for such tyres
IPC: B29D30/06
Filed: 1943-09-07
Abstract: 586,281. Presses for vulcanizing tyres and inner tubes. McNEIL MACHINE & ENGINEERING CO. Sept. 7, 1943, No. 14648. Convention date, Feb. 25. [Class 87 (ii)] [Also in Group XXIV] In order to adjust the upper platen 15 on the press head 17, for different-sized mould sections 12, an interiorly- and exteriorly-threaded sleeve 21 is disposed between the threaded walls 24 of an opening 25 in the platen and a threaded bolt 18 formed integrally with the press head. The interior threads on the sleeve are right-hand threads and mesh with the bolt, and the exterior threads are left-hand and mesh with the wall 24. When the sleeve is turned in one direction the platen travels down the sleeve, and the sleeve itself travels down the bolt, so that the total distance of separation between the platen and the bolt is twice the distance of travel of the sleeve. The sleeve is turned by a reversible manually-operated ratchet gear comprising a long pinion 28 which meshes with gear teeth 27 on the sleeve. The pinion is rotated by a handle 32 and turns on a stub shaft. On the handle 32 is a housing 36 for a pawl 40 pressed by spring 43 against the pinion 28. The working stroke of the ratchet is clockwise, Fig. 4. To change the working stroke to counter-clockwise, a handle 42 secured to the pawl stem 41 and extending through a slot 39 in the housing is pulled out, turned through 180 degrees and allowed to sink back under the action of spring 43. The pinion may be locked against movement by means of a bolt 35 and washer 34. Rotation of the platen 15 is prevented by means of a rod 49 which slides through a sleeve in an arm 46 which is secured by bolts 47 to the press head and co-operates with a cam to guide the platen 15 in its opening and closing movements.
Patent GB-573810-A (GB)
Title: Fastening clip for bandages, dressings, slings and similar objects
IPC: A61F15/00
Filed: 1942-10-20
Abstract: 573,810. Bandage &c. fastenings. HELLER, E. Oct. 20, 1942, No. 14666. [A Specification was laid open to inspection under Sect. 91 of the Acts, Nov. 16, 1943] [Class 44] A device for securing bandages and textile materials generally comprises a pair of bars 1 each having at one edge small sharp hooks 2 which engage in the bandage &c. material and at the other edge barbed spikes 3 to receive coiled springs 5 securing the bars together, the springs being placed under tension when in use.
Patent GB-130197-A (GB)
Title: Improvements in Liquid Meters or Indexes.
Inventor: FREW DAVID LANDALE
IPC: G01F1/52
Filed: 1918-09-10
Abstract: 130,197. Frew, D. L. Sept. 10, 1918. Indicators actuated by floats.-In a weir meter, a rod C, directly or indirectly operated from a float passes through a tubular member D provided with a scroll guide D' engaged by a pin C<2> on the rod. A scale-carrying member E is slidably mounted on the rod C, and the guide D<1> is so shaped that equal divisions on the scale represent equal variations in flow. In a modification, the float rod G', Fig. 3, is held against rotation and is provided with a pin G<2> engaging a guide H' on a member H which carries a scale H'.
Patent GB-795246-A (GB)
Title: Improvements in fasteners for use with bolts and similar screwthreaded shanks
Inventor: LYNALL ALAN HERBERT
IPC: F16B37/04
Filed: 1955-05-20
Abstract: 795,246. Anchor-nuts. LINREAD, Ltd. May 2, 1956 [May 20, 1955], No. 14695/55. Class 89(1) A sheet-metal-nut has a U- or J-section body comprising arms 1, 10, Fig. 3, for embracing the edge of a panel 7, each arm having a portion 5, 9, Fig. 2, engaging in a hole 6 in the panel to locate the nut relatively to the hole. Arm 1 has a pressedpart 2 for engaging the thread of a screw, &c., ond the locating-portions engage diametrically oppose sides of the sole. Specifications 514,630 and 533,203 are referred to.
Patent GB-487455-A (GB)
Title: Improvements in or relating to motor driven food mixers
IPC: A23G9/28
Filed: 1937-05-27
Abstract: 487,455. Motor-driven mixing and juice-extracting machines. WESTINGHOUSE ELECTRIC & MANUFACTURING CO. May 27, 1937, No. 14722. Convention date, May 27, 1936. [Class 86] [Also in Groups VI and XXXV] A domestic mixer, which may be used as a juice extractor, comprises a base having an upwardly extending standard a,t one side which pivotally supports a power unit including a motor and beater shafts all arranged so that the motor and beater shafts are on opposite sides of a plane passing through the standard and the centre of the base, the motor shaft being at right-angles to this plane ; the juice extractor comprises a detachable tool and bowl which are attached, after the removal of the mixing-tools, and the unit has been turned on its pivot ; the motor shaft is fitted with a pair of opposite worms engaging intermeshing worm wheels to avoid end thrust. The base 1, Fig. 3, is fitted with a depression 10 in which a small bowl can be placed, and with a removable turntable 8 carried by a bearing 9 and furnished with a depression 13 for a larger bowl 12. The standard 2 has an off-set arm 18 in which a member 21 is removably pivoted ; the member carries the motor unit which can occupy the position shown for mixing, or moved to the position shown in Fig. 1 for using the juice extractor. As shown in Fig. 6, the motor shaft 52 is fitted with opposite worms 54, 55 driving interengaging worm wheels 56, 57 whereby end thrust on the shaft is avoided. The shaft 58 of the worm wheel 56 is used for driving the juice-extracting tool 78, the bowl 71 being detachably carried in a socket 61 on the power unit ; other machines may be substituted for the juice extractor. The worms 54, 55 also drive worm wheels 80, Fig. 7, through which beater shafts 84 are driven. The beater shafts are detachable and held in position by spring- influenced locking members 87. The beaters comprise strips 90 which are concave outwardly in cross-section and are secured to flat caps 91 which on the mixing bowl and effect its rotation.
Patent GB-721840-A (GB)
Title: Improvements in or relating to circuit arrangements for distributing electric pulses
Inventor: BROADHURST SIDNEY WALTER
IPC: H04M19/02
Filed: 1949-02-14
Abstract: 721,840. Pulse circuits. POSTMASTER GENERAL. Feb. 14, 1949, No. 14755/52. Divided out of 721,822. Class 40 (6). Pulses derived from a source of continously generated pulses are distributed in the form of two or more separate pulse trains each comprising a predetermined number of pulses up to a maximum number determined by the number of pulses derived from the source. The output of the multivibrator V80, V81 is applied to pulse-shaping circuit V82, V83 which then produces rectangular negative-going pulses of 50Á second duration. These are fed to the circuit comprising the trigger pair V86, V87 and D.C. amplifier V84, V85 which is designed so that V85 does not repeat the first pulse applied to V84 but passes all subsequent pulses. The first negativegoing pulse is applied to the control grid of V84 but potentiometer P3 normally maintains the suppressor grid of V85 negative, and although the input pulse, after differentiation by C1, R8, triggers V86 the time constant of C9, R9 is such that V85 remains cut off for the duration of the pulse. 'During the interval between the first and second pulses, however, the suppressor grid of V85 goes positive and V85 passes the subsequent pulses. The boxes L2 to L19 represent similar circuits so that each successive pulse passes one circuit further down the chain and from the output terminals TD15 to TD1 of amplifiers LA6 to LA20 trains of from 15 to 1 pulses, respectively, are obtained. After a pulse has been repeated over TD1 the trigger circuits, e.g. V86, V87 are restored by a negative-going pulse derived from the flip-flop circuit V91, V92 which is driven on the suppressor grid of V91 by a pulse taken from the screen grid of V94.
Patent GB-162944-A (GB)
Title: Improvements in protectors for the soles of boots and shoes
IPC: A43C13/02
Filed: 1920-06-01
Abstract: 162,944. Fussell, H. J., and Fussell, E. G. June 1, 1920. Protectors, construction of. -A protector for the soles of boots and shoes is made in separate parts which are pivoted together at the centre of the sole to allow of adjustment to suit varying sizes and shapes of soles. Fig. 1 shows a sole-protector made in two parts a a<1>, b b<1>, having central discs a2, b2, adapted to overlap each other and provided with holes h to receive a nail or screw. One of the parts may, as shown in Fig. 1, be formed integral with a split toe-piece c, or this toe-piece may be formed separately. The parts are so shaped that the assembled protector has two longitudinal openings d, d, and two transverse openings d<1>. d<1>. A modification is described in which the whole of the front portion is made in one piece to which two rear portions are pivoted by means of overlapping discs.
Patent GB-328131-A (GB)
Title: Guide for the current supply cable of electric irons
IPC: H02G11/00
Filed: 1929-05-13
Abstract: 328,131. Quendt, B. May 13, 1929. Apparatus for automatically taking up slack of conductors.-In order to guide the current supply cable of an electric iron, the cable is placed in an elastic guide tube consisting of a spiral spring fixed at its ends to the iron and to a crank-lever mounted to swing on a table clamp which follows the iron and relieves the cable of the pull. In the embodiment, the current supply cable b is protected against kinking at the iron a by a short spiral spring c to which is fixed, by a pressed metal plate screw socket e, a long spiral spring d. The other end of the spring d is fixed to an arm f<1> of a U-shaped strap rotatably mounted on the upper limb of a table. clamp g. A lower arm f<2> of the strap f is formed with a guide bush h for the cable b. A spring i, attached to the clamp g, is adapted to be bent to serve as a grip i<1> for the cable b, thus relieving the plug k, mounted at the cable end, from the pull of the iron. Reference has been directed by the Comptroller to Specification 335,113.
Patent GB-1113308-A (GB)
Title: Work-hardening of bars by twisting
Inventor: HINGSTON ANDREW DONOVAN HUNTLY
IPC: C21D7/10
Filed: 1966-04-04
Abstract: 1,113,308. Twisting reinforcement rod. ROM RIVER CO. Ltd. 4 April, 1967 [4 April, 1966], No. 14875/66. Headings B3E and B3V. A method of work-hardening a bar by twist. ing comprises rigidly securing one end of the bar to an elastic transducer element having its axis aligned with that of the bar, the twisting stress applied to the transducer element by the bar during the twisting process being measured by a strain gauge or gauges attached to the transducer element, and the application of twisting torque to the bar being stopped when the said stress exceeds a pre-set level. A bar 10 to be twisted is supported at intervals along its length by brackets 11, one end is held by a rotatable chuck 12 driven through a reduction gear 13 and clutch 14 by a motor 15 and the other end by a bar chuck 16 mounted on one arm of a bracket 17 in turn mounted on one end of a tubular transducer element 18, the other end of which is secured to a fixed rigid mounting plate 19. Strain gauges on the element 18 are connected to a Wheatstone bridge network whose output is fed to a trip level detector 21 to control, through a relay 22, the clutch 14 to terminate twisting when the measured strain in the transducer element reaches a pre-set value. The apparatus may include a time switch or revolution counter arranged to end the twisting operation when a particular degree of twist is exceeded, regardless of the stress as measured by the transducer.
Patent GB-825677-A (GB)
Title: Arc cutting of metals
Inventor: OSBORN BERNARD ROTHWELL
IPC: B23K10/00
Filed: 1957-05-10
Abstract: 825,677. Cutting by fusion. MARSTON EXCELSIOR Ltd. May 2, 1958 [May 10, 1957], No. 14897/57. Class 83 (4). In the electric arc cutting of metals 10, the arc 7 is deflected magnetically to one side of the cut for preventing the formation of tears 12 on the opposite side 11. The invention is used in the constricted arc cutting of aluminium using a tungsten electrode 2 and an argon-hydrogen mixture as the shielding gas. The arc is deflected by an electromagnet 4 supplied with direct current through a polarity reversing switch 9 and variable resistance 8. The position of the magnet is adjustable along its core 5.
Patent GB-1386658-A (GB)
Title: Boxes and their manufacture from single blanks
IPC: B65D5/66
Filed: 1972-03-29
Abstract: 1386658 Shoulder box from a single blank; packaging cigars TILBURGSE STEEN EN OFFSETDRUKKERIJ NV 29 March 1972 14913/72 Headings B8P and B8C A shoulder box formed from a single blank and including separate or hinged box and lid parts is made by gluing an edge strip 7 of a lid panel 5 to the outside surface of an edge strip 3 of a bottom panel 1 to form a tube (Fig. 2b), closing the ends of the tube (Figs. 2c, 2d) by inwardly folding edge strips 2, then tabs 8 followed by edge strips 6, the latter being glued to the tabs 8, and finally cutting longitudinally through at least to edge strips 6, 7 and tabs 8. If a separate lid is required the edge strip 4 is also cut longitudinally. The blank may be cut so as to provide tabs 11. In another embodiment (Figure 5) the cuts in the edge strips 6 are oblique so that, in the box part, the rear wall formed by the edge strip 4 is higher than the outermost front wall formed from part of the edge strip 7. Cigars may be packed in the box (Fig. 6) through an end of the tube prior to closing the ends of the tube.
Patent GB-742676-A (GB)
Title: Improvements in or relating to dry cell battery testers
IPC: G01R31/36
Filed: 1953-05-28
Abstract: 742,676. Primary cell testing. ELLIS, G. B. May 28, 1953, No. 14935/53. Drawings to Specification. Class 37. The available capacity of a primary cell is measured by periodically short-circuiting the cell through a damped ammeter, giving a deflection proportional to the average current. This current is proportional to the depolarizing rate and thus to the available capacity. The short-circuiting periods are just long enough to paralyse the cell and the intervening periods short enough to prevent complete recovery from polarization of the cell. The shortcircuiting device may be a conducting segment, mounted on a uniformly rotating wheel which connects the two poles of the battery through the meter once per revolution. The meter has a linear scale reading from 0-100 per cent, the upper limit being calibrated by a new cell and being different for cells of different capacity.
Patent GB-1012313-A (GB)
Title: Improvements in or relating to thieno-benzothiapyran derivatives
Inventor: RENZ JANY
IPC: C07D495/04
Filed: 1962-04-17
Abstract: The invention comprises compounds of general formula <FORM:1012313/C2/1> in which each of R1, R2 and R3 is hydrogen or methyl; each of R4 and R5 is alkyl (1-4 C) or R4 and R5 are together an alkylene radical of 4-5 C which may have interposed a nitrogen atom substituted with an alkyl radical of 1-4 C or an oxygen atom, with the proviso that when R5 is alkyl R4 together with R1, R2 or R3 may form a straight chain alkylene radical of 2-4 C; and R6 is hydrogen chlorine, alkoxy (1-4 C) or alkylmercapto (1-4 C):  their cis-trans isomers:  their acid addition salts:  and their preparation by dehydration of corresponding 4 - hydroxy - 4 - substituted - thienobenzthiapyrans by use of an organic acid anhydride, a phosphorus halide or oxyhalide or by merely heating below the decomposition temperature of the product; the starting materials may be first prepared by the process of Specification 1,012,314. Pharmaceutical compositions comprise compounds (I) and acid addition salts of the invention with inert carriers.  Neuroplegic and antihistaminic activity is mentioned.
Patent GB-168649-A (GB)
Title: Improvements in or connected with indicating or adjusting devices for wireless direction finding coils and other purposes
IPC: H03J1/06
Filed: 1920-06-02
Abstract: 168,649. Woodell, S. F. June 2, 1920. Condensers.-In apparatus in which an operating head or handle is required to be turned through a limited number of complete rotations, the handle makes a complete revolution with respect to a washer which is capable of one revolution with respect to a further washer or the supporting member. In an example, Fig. 1, the head 9 carries a pin 14 working in a circular groove in the washer 10 as far as the stop-pin 12. A pin 13 on the fixed member 8 works in a similar groove in the under side of the washer 10. Two complete rotations of the head are thus possible. In a modification, the washer carries a projection working in a recess on the head. Fig. 6 shows a construction specially adapted as a step bearing for direction finding coils.