baber/WOPTO huggingface dataset:
Patent GB-866982-A (GB)
Title: Production of polyacrylonitrile filaments
IPC: D01F6/18
Filed: 1957-08-19
Abstract: Filaments are produced by spinning a solution of an inorganic acid salt of an acrylonitrile polymer that also contains a vinyl pyridine combined in the polymer molecule into an aqueous coagulating bath and contacting the gelled filaments with an aqueous solution of ammonia or of an amine having a boiling point not greater than 150 DEG C., the ammonia or amine solution having a pH of 8-11, to render the filaments substantialy free of bound anions, the salt of the polymer being either the thiocyanate or, when the coagulating bath contains a water-soluble thiocyanate, an inorganic salt which is convertible into the thiocyanate when the polymer is brought into contact with the coagulating bath.  The acrylonitrile copolymer may contain at least 80% by weight of acrylonitrile and at least 2% by weight of a vinyl pyridine and preferably comprises 80-96% by weight of acrylonitrile, 2-10% by weight of a vinyl pyridine and 2-10% by weight of another mono-ethylenically unsaturated compound, e.g. a vinyl ester, an acrylic ester, an acrylamide, an acrylic acid, methacrylonitrile, an unsaturated alcohol, e.g. allyl alcohol, or a vinyl-substituted aromatic hydrocarbon, e.g. styrene or isopropenyl toluene.  The copolymer is preferably dissolved in a concentrated aqueous solution of sodium thiocyanate, although concentrated aqueous solutions of zinc chloride, calcium chloride, lithium bromide, cadmium bromide, cadmium iodide, zinc thiocyanate, aluminium perchlorate, calcium perchlorate, calcium nitrate, zinc nitrate, guanidinethiocyanate and (lower alkyl)-substituted guanidine thiocyanates are also suitable, and is then extruded into an aqueous solution containing 3-20% by weight of an alkali-metal thiocyanate and, if desired, at least 4% by weight of a watermiscible alcohol, which is preferably maintained at a temperature not exceeding 10 DEG C.  The gelled filaments may then be washed with water and given a cold solvent stretch and are then treated with an aqueous solution of ammonia or of an amine having a boiling point not greater than 150 DEG C., e.g. mono-, di- or tri-methyl or -ethylamine or mono- or di-propyl amine.  The filaments may then be washed with water, hot stretched while in contact with moisture at 70 DEG -110 DEG C. to an extent such that the total stretch is from three to fifteen times the length of the unstretched material, rinsed with water, dried or conditioned, crimped, cut into staple fibres and dyed with premetallized acid dyes.  Specifications 714,530, 732,135, 738,759, 826,967, 835,552, 849,465 and 866,983 are referred to.
Patent GB-799252-A (GB)
Title: Improvements in or relating to photographic shutters
IPC: G03B9/26
Filed: 1956-08-27
Abstract: 799,252. Photographic shutters. MONOTYPE CORPORATION, Ltd., and WILLIAMS, J. H. Aug. 27, 1956, No. 26109/56. Class 98(1) A shutter comprises an apertured shutter member movable to and fro relative to a casing having an aperture which lies in the path of the aperture in the shutter member, a cover blade frictionally engageable with the shutter member and movable therewith between fixed stops so that when the shutter member and cover blade have completed a movement in one direction the blade engages one stop and covers the shutter member aperture and when the shutter member and cover blade move in the other direction the shutter member aperture remains covered by the blade until the aperture has passed the casing aperture and the blade engages the other stop. As shown, the housing A is arranged for mounting in a photo-composing machine with its aperture a<SP>2</SP> aligned with the optical axis of the machine. A pivoted shutter member B<SP>4</SP> having an aperture b is moved from the position shown across the aperture a<SP>2</SP> to effect an exposure when a ring B<SP>1</SP>, geared thereto, is rotated by a reciprocating rack C. A cover blade D, pivoted co-axially with the member B<SP>4</SP>, is frictionally engaged with the ring B<SP>1</SP> by a spring-urged pawl D<SP>1</SP> so as to move with the member B<SP>4</SP> from a position defined by a stop A<SP>3</SP>, in which it obscures the aperture a<SP>2</SP>, to a position defined by a stop A<SP>4</SP>. At the end of the exposure movement of the member B<SP>4</SP>, the aperture b is covered by the blade D so that those members are returned in capping relation to end the exposure. The size of the aperture b may be reduced by altering the position of a pivoted plate E', which is releasably clamped to the member B<SP>4</SP> by a screw-andslot connection e, E' and has a notch e<SP>1</SP> of a diameter equal to the width of the aperture b. The rack C is continuously operated in timed relation to the master plate movements in the machine, and in order to ensure that no image is projected when a space is required, there is provided a masking plate F pivoted co-axially with the member B<SP>4</SP> and operable through a link F<SP>3</SP> and connected plunger G either by an air cylinder H<SP>1</SP>, to which the air supply is controlled by a signal on the record strip controlling the machine or, manually, by a thumb lever G<SP>3</SP>.
Patent GB-200742-A (GB)
Title: Improvements in or relating to frictional braking gear
IPC: F16D65/14
Filed: 1922-09-28
Abstract: 200,742. Shave, G. J., Watson, O. W. J., and London General Omnibus Co., Ltd. Sept. 28, 1922. Blocks acting on drums. - Relates to braking gear of the kind comprising two associated pairs of interengaging friction members, one member of each pair of which is provided with a friction strip or wearing surface and consists in providing that member of each pair which is not provided with the wearing surface and which does not therefore become changed in diameter, of larger diameter than the corresponding member of the other pair whereby when the one member provided with the wearing surface has become worn to be of no further use with its co-operating member transfer can be effected and its wearing surface be made to co-operate with the member of the other pair. When a detachable friction strip is employed, the arrangement, may be such that the one brake may use a thicker strip than the other, so that the thicker strip when worn so as to be no longer of use with the one brake may be transferred to the other. Fig. 1 show two internally expanding shoe brakes comprising drums 11, 12 secured to a vehicle wheel 10. The friction surface of the drum 11 is of less diameter than that of the drum 12. The shoes 13, 14 are of the same size and shape so as to be interchangeable. Thicker friction strips 15 can thus be attached to the shoes 13 than to the shoes 14, and when these strips have been worn, the strips with or without the shoes 13 can be transferred for engagement with the drum 12. A pair of pivoted shoes operated by a cam is shown as applied to each drum; one pair may be operated by hand and the other by a pedal. The friction strips 15, 16 may be secured to the drums 11, 12 instead of to the shoes.
Patent GB-379530-A (GB)
Title: Apparatus for removing metal from the seams of welded joints for the purpose of testing the same
IPC: B23K5/22
Filed: 1931-09-21
Abstract: 379,530. Testing welded joints. SCHMUCKLER, H., 54, Wollankstrasse, Berlin. Sept. 21, 1931, No. 26331. Convention date, Sept. 20, 1930. [Classes 83 (iii) and 83 (iv).] Milling machines ; uniting by fusion.-In an apparatus for removing material from the seam of a welded joint 3 between members 1, 2 for testing purposes, a rotary milling cutter 4 is guided in a plane perpendicular to the welded joint by stops which bear on the members bounding the weld seam. Thus in Fig. 7 the tool is driven by a flexible shaft 9 and is fed forward axially, while being located by the stops 5, against the resistance of a spring 7. The handles 8 may be replaced by a breast shield. In some cases, to remove a larger part of the joint, the tool may be mounted in a slide Fig. 10, so that it may be traversed laterally, by means of a screw 10. The stops 5b shown in Fig. 10 may be used for removing metal from a seam such as that shown in Fig. 5. In a modification a combined end and side milling cutter 4a, Fig. 4, may be brought up to the seam by axial movement while being guided by a bridge-piece engaging the vertical part. The inclined sides of the milling cutter are preferably parallel to the boundary surfaces of the welded bodies. For cutting an external seam the stops 5c are arranged as shown in Fig. 9. The lateral movement of the tool may be derived from the mechanism which operates the axial feed. In some cases the stops 5 may constitute or be provided with electromagnetic chucks or suction holding devices.
Patent GB-1335910-A (GB)
Title: Tilting drive for converters
IPC: C21C5/50
Filed: 1971-04-19
Abstract: 1335910 Tilting metallurgical converters VEREINIGTE OSTERREICHISCHE EISEN - UND STAHLWERKE AG 19 April 1971 [10 June 1970] 26344/71 Heading F4B In a tilting drive for a metallurgical converter movements due to static or thermal stresses are accommodated by a construction comprising a gear-wheel 2 engaged by pinions 3 in a swinging pinion carrier 4 suspended from the trunnion 1 and resiliently supported from a foundation by mechanism including a rod 7 connecting the carrier 4 and a crank-shaft 10 mounted in bearing blocks 11 and 12 and a splined torsional rod 17 fixedly engaging a bearing block 18 and having its end 16 engaging a splined recess 13 in the crank-shaft, the distances e and I being variable. The effective lever length e of the crank-shaft may be varied by withdrawing the rod 15 from the recess 13 rotating the crank-shaft by the appropriate amount and re-inserting the rod. The effective torsional rod length I may be varied by displacing the bearing block 18 on its guide bed 19 to which it is attached by screwed bolts whose heads enter recesses (21, Fig. 5) in said bed. The distance b between the connecting rod 7 and a plate 22 should lie within the range e-2e. Should the tension rod 15 break the rod 7 will strike the plate 22 preventing further rotation of the crank-shaft. In a modification (Figs. 6 and 7) the rod 7 is connected at right angles to a substantially rectangular yoke (26) from the sides of which extend torsional rods (33, 34) the connection being through a bearing ring (24) adjustably mounted around a bolt (25) extending vertically between the top and bottom of the yoke.
Patent GB-232278-A (GB)
Title: Improvements in or relating to gas or oil power plant
IPC: F02C5/06
Filed: 1923-10-23
Abstract: 232,278. Bailey, R. W., and Metropolitan-Vickers Electrical Co., Ltd. Oct. 23, 1923. Valves.-In a power plant comprising one or more internal-combustion cylinders 5 with opposed pistons 16, 17, the exhaust from the cylinders being supplied to a prime mover, inlet ports may be controlled by auxiliary pistons 18 for varying the clearance. In modifications, mushroom or other valves for admission and exhaust work in chambers connected to the cylinders by ports controlled by the auxiliary piston, suitably ported. The lift or travel of the exhaust valves may be arranged to place them clear of the exhaust gases leaving the cylinder.
Patent GB-1485471-A (GB)
Title: Television signal time base corrector
IPC: G06F5/06
Filed: 1974-07-23
Abstract: 1485471 Television; timing correction CONSOLIDATED VIDEO SYSTEMS Inc 23 July 1974 [23 July 1973] 26483/74 Headings H4F and H4R Time base errors in a video signal, e.g. derived from a magnetic tape, are corrected by converting the video signal to digital form at a sampling rate which varies in a manner proportional to the time base errors, storing the digitized information, and reading the information out of the store at a fixed rate. The variable sampling rate is preferably determined in response to horizontal sync. pulses, equalizing pulses and colour bursts separated from the video signal. The storage is effected in a plurality of memories each capable of storing a plurality of horizontal lines of video information, a unique sequence control (claimed in Specification 1,485,472, see Division G4) selecting the memories for writing and reading so that double clocking of a single memory which marginally occurs at the extreme boundaries of the correction range is quickly relieved, the maximum correction range being 1À5 lines, i.e. 95À34 microseconds. The fixed rate clocking signal may be derived from either an internal sync. generator or a studio sync. generator.
Patent GB-864974-A (GB)
Title: Improvements in or relating to radio receivers
IPC: H03J7/28
Filed: 1959-08-04
Abstract: 864,974. Radio receiver circuits; radio receiving systems. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Aug. 4, 1959 [Aug. 6, 1958], No. 26549/59. Class 40(5) [Also in Group XXXVI] A radio receiver comprises a double frequency changing reception channel including two mixers 2, 4 each with its own local oscillator 6, 13, that of the first being variable in frequency and a stabilising channel having two successive mixers 7, 10 with a tunable filter 9 between them and a second filter 12 following the second mixer. The first mixer of the stabilisation channel is connected to receive one input from the oscillator 6 and the other from a source of selectable stabilised frequencies 8, and the second mixer 10 receives one input from the filter 9 and a second input from a variable frequency oscillator 11. A switch 14 is provided for supplying either the output from the local oscillator 13 or the output from the filter 12 as a second input to the mixer 4. With the switch 14 connecting the local oscillator 13 to the mixer 4, the receiver may be tuned in the normal manner, and if the oscillator 11 is now tuned to make the output from the filter 12 equal in frequency to that from the oscillator 13, then the switch may be switched to its other position without effecting the operation of the receiver. The two frequencies are made equal by comparing them on a CRT indicator 15. With the switch 14 in this second position operation of the receiver is unaffected by variation in frequency of the first local oscillator 6. The frequency control of the local oscillator 6 is ganged to that of the oscillator 8 which is in the form of a crystal controlled harmonic generator, and also to a decade counter 16, so that the counter shows the three figures of the received frequency equal to or higher than tens of kc/s, the lower order figures being hidden by a shutter. A figure for the tens and lower orders of kc/s are controlled by the oscillator 11, and movement of the switch 14 to connect filter 12 exposes these figures and masks the previously exposed tens figure. Two indicator devices, for example lamps, are associated with the counter one being operated when the oscillator 11 is adjusted to within one part of its tuning range and the other when in the other part of the tuning range, the devices being arranged so that they indicate which of two numbers which the counter may show simultaneously is the correct one.
Patent GB-682357-A (GB)
Title: Improvements in and relating to dynamo-electric machines
IPC: H02K3/12
Filed: 1950-10-31
Abstract: 682,357. Conductors for dynamo-electric machines. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 31, 1950 [Nov. 5, 1949], No. 26550/50. Class 35. A rotor has slot winding consisting of two different conducting materials of different widths, e.g. copper and aluminium aecommodated in the same stepped slots, but the end windings are all of the same width. Fig. 2 shows a winding slot 13 having an innermost portion 13a in which conductors 14 of copper are placed and in the wider outer portion 13b aluminium bars 15 are placed. This arrangement of providing lighter conductor at the outside will reduce the centrifugal force of the whole winding. Fig. 3 shows how the end turns are formed. Aluminium end turns 15a, 17 are used for both aluminium and copper bars 15, 14 respectively. The end turns 15a are integral extensions of the bars 15 while the other end turns 17 are joined to the bars 14.
Patent GB-417893-A (GB)
Title: Improvements in or relating to folding chairs, tables or the like
IPC: A47C4/32
Filed: 1933-09-27
Abstract: 417,893. Pivots. BAUMANN, K., 388, Zurcherstrasse, St. Gallen, Switzerland. Sept. 27, 1933, No. 26632. [Class 65 (ii).] A folding chair or table or like article has frame members, foldable together, certain members being of channel or angle section so that the adjacent members may be accommodated therein. To enable this to be done the pivot device connecting the parts 20, 21 consists of a pin 35 carried by channel member 21 and a bush 37, fixed in member 20, slidable on the pin, detachment being prevented by a wing-nut 40 on a screw 36 passing through the pin 35. The wing-nut serves to press the members 20, 21 together to hold them at any angle.
Patent GB-356938-A (GB)
Title: Improvements in water heating apparatus for domestic supply
IPC: F24C13/00
Filed: 1930-09-06
Abstract: 356,938. Domestic boilers. DARBY, H. G., 39, Broad Street, Birmingham. Sept. 6, 1930, No. 26649. [Class 64 (i).] A water-heating tank 1 is adapted to be mounted at the back of a gas fire, and is provided with a flue or flues 8 extending upwardly through it from the gas outlet of the fire. In the form shown the tank comprises a rearwardly and upwardly-inclined top portion 11 through which the sinuous flue 8 extends, and a lower part having a corrugated portion 5 at the front adapted to fit against the correspondingly corrugated refractory back 6 of the stove. The tank is provided with double walls packed with insulating material, and with flanges or lugs by which it may be attached to the back of the stove. A modification is described in which the tank is of simple rectangular form and the flue 8 passes vertically through the upper part to an outlet at the top.
Patent GB-757032-A (GB)
Title: A new or improved device intended primarily for the display of gramophone records
Inventor: JONES BERNARD FREDERICK
IPC: A47B81/06
Filed: 1953-09-29
Abstract: 757,032. Racks. HILL & SONS, Ltd., T. H. July 8, 1954 [Sept. 29, 1953], No. 26690/53. Class 52(5). A rack or stand for displaying gramophone records, circular plaques &c. comprises display units in which the records &c. stand on edge, the units being arranged in rows or tiers and having upper and lower pivots received in apertures in horizontal flanges of angle-section, sheet metal, mounting members. As shown, gramophone records 17 are inserted between wires 146, 149 secured in the outer ends of channelled limbs 141, 142 of a display unit, the limbs being spot-welded at 143 and the limb 141 being spot-welded at 151 to a pin 15 pivotally mounted in apertures 104, 107 in flanges 102, 106 of mounting members 10 secured to a wall 11. The lower end of the pin 15 is supported by a channel 131 welded to the lower mounting member the pin being displaced upwardly for removal. In a modification the pivotal axis is inclined and the mounting members form part of a stand or framework.
Patent GB-357748-A (GB)
Title: Improvements in or relating to pneumatic despatch tube systems
IPC: B65G51/20
Filed: 1930-09-08
Abstract: 357,748. Pneumatic dispatch apparatus. STURTEVANT ENGINEERING CO., Ltd., 147, Queen Victoria Street, and BACKHOUSE, E., 36, Finchley Way, Finchley, both in London. Sept. 8, 1930, No. 26744. [Class 116.] In pneumatic dispatch apparatus, a carrier h, Figs. 2 and 5, approaching a central station, is brought gradually to rest on a grid e8, in a " dead " ection A below an extraction opening A1, the airs current being maintained by means of a byepass B. A valve C, having four passages communicating respectively with the pressure and suction sides of a blower D, the line and the atmosphere, is operated to place the line under suction, a one-way valve e6 is thus closed and a valve e1 is operated against a spring e2 to open the byepass. In dispatching a carrier, the line is placed under pressure and the valve e1 being allowed to close, the valve e6 opens. In another form, Fig. 6, the valves e1, e6 are replaced by a double pressure-operated valve k1, k2, the closure members thereof being connected so that when one is open the other is closed. A neutral position is provided for the valve C in order to permit removal form, or insertion in, the closable aperture A1, of a carrier.
Patent GB-224702-A (GB)
Title: A new or improved system of electric motor control and improvements in or connected with automatic controllers
IPC: B66C13/24
Filed: 1923-10-26
Abstract: 224,702. Electric Control, Ltd., and Ellefsen, O. Oct. 26, 1923. Systems for continuous-current motors only; master control systems.-A relay responsive to back electromotive force renders acceleration possible beyond a predetermined speed, and in slowing down remakes connections for enabling lower speeds to be reached. The invention is described in relation to a master controller N and a number of electromagnetic contactors A.. . F for a motor M having series resistances and diverter resistances. In acceleration, the last step of the series resistance is short circuited by the contactor D when the master controler is turned to position 5, on condition that a relay G having its coil connected across the motor terminals has previously moved from the upper positions to the lower positions. In deceleration, the diverter resistance contactor A is closed when the master controller comes to position 2, provided that the relay G has returned to the upper position shown.
Patent GB-1348614-A (GB)
Title: Electrostatic precipitators
IPC: B03C3/88
Filed: 1972-06-08
Abstract: 1348614 Electrostatic precipitators ENVIROTECH CORP 8 June 1972 [8 June 1971] 26788/72 Heading B2J An electrostatic precipitator comprises a flow chamber 12 housing emitting electrodes 16 and collecting electrodes 18; hoppers 24 positioned below openings 23 in the chamber to collect the precipitated dust; an earthed electrode grid 28 adjacent the openings 23; and corona discharge points 26 located above and cooperating with the grid 28. In operation, a corona discharge and an electric wind are produced in a downward direction between the points 26 and the grid 28; thus, dust particles which fall below the electrodes 18 will be conveyed both by gravity and by the electric wind into the hoppers 24, whilst dust already in the hoppers will be prevented from becoming reentrained in the gas flow through the chamber 12. The corona discharge points may be constituted by wires (32) attached to weights (30) hanging on the emitting electrodes 16 (Figs. 2 and 3, not shown).
Patent GB-1114529-A (GB)
Title: Improvements in or relating to shotgun cartridges
IPC: F42B7/06
Filed: 1966-06-15
Abstract: 1,114,529. Shotgun cartridges. REMING- TON ARMS CO. Inc. 15 June, 1966 [15 June, 1965], No. 26796/66. Heading F3A. A shot cartridge has a case of moulded plastics material comprising a rear portion 12 which houses the charge 36 with an intermediate wad 38 and head end 30 having a primer 34, and an integral cup-shaped forward portion 20 containing the shot 44. The forward portion 20 is of smaller diameter and joined to the rear portion at a discontinuity region presenting a sloped shoulder 16. The cartridge may be used in a stepped gun bore conforming to these diameters. On firing, the forward portion breaks off and, being weakened by longitudinal slits 24, opens and falls away from the shot.
Patent GB-1514992-A (GB)
Title: Pistol apparatus for driving tacks nails and the like into material
IPC: B25C1/00
Filed: 1975-06-25
Abstract: 1514992 Nailing guns INTERTACK ANSTALT-VADUZ (LIECHTENSTEIN) 25 June 1975 [22 July 1974 28 May 1975] 26899/75 Heading B4C Hand held apparatus for driving tacks comprises a magazine 24 adapted to receive a plurality of similar casings 21 connected together so that the tack stems are parallel, means 51 to detach a easing and tack and advance it into an elongate barrel 38 to a position where the casing stops and the tack carries on. The pistol is pneumatically operated and has a piston operation.