baber/WOPTO huggingface dataset:
Patent GB-632500-A (GB)
Title: Improvements in or relating to ornamental or advertising means
IPC: G09F19/10
Filed: 1947-05-22
Abstract: 632,500. Changing signs. SUMMERSGILL, J. F. May 22, 1947, No. 12527/46. [Class 3(i)] A sign comprises one or more vari. coloured rotatable non-opaque drums 14 each containing an electric lamp 15 and arranged to edge-illuminate three transparent or translucent sheets; two of the sheets form a background 4 and a foreground 3 for an animated device 2 and the other one 17 directs light onto it. The drum or drums are driven by reduction gearing from an electric motor or clock 6 which also through a cam 5 rocks the animated device or model 2. The top edge of the sheet 17 is thickened and the back of a casing 19 may be reflective. Additional illuminated vari-coloured drums backed by reflectors may be provided at the sides to illuminate the background 18, and an electric lamp may be mounted above the display and connected in series with a variable dimming resistance on a drum spindle. The drum colours are chosen to give the effect of sunset, sunrise, moonlight &c. Specification 580,886 is referred to.
Patent GB-326074-A (GB)
Title: Improvements in tooth brushes
IPC: A46B7/04
Filed: 1929-04-23
Abstract: 326,074. Lee, P. April 23, 1929. Curved reversible handles; fixing by grooved members; holders with recessedback retaining-devices for brushes.-A toothbrush has a detachable head, the connecting means consisting of pronged extensions 3, 4 in the handle members, having recesses 3<x>, 4<x>, 4<o> and side guides 5, 6, and lateral extensions to the brush head 7 adapted to be slipped longitudinally into the open end of the guides at each side of the fork; the head is locked in position by the projections 5<x>, 6<x>. The members of the fork are curved longitudinally and the brush head is carried by a resilient backing 8 so that the outer face of the bristles 7<x> is concave, Fig. 3, or convex, Fig. 4, according to the way in which the brush head is inserted.
Patent GB-572444-A (GB)
Title: Improvements in or relating to desks
IPC: A47B17/03
Filed: 1943-08-04
Abstract: 572,444. Desks. STEVENS, A. H. (Art Metal Construction Co.). Aug. 4, 1943, No. 12587. [Class 52 (iii)] A desk has a pedestal 19 fitted with drawers 24 at one side of a knee-hole recess 12, a fixed top portion 13 to support a typewriter &c. 14, and a rack to hold papers of various sizes in a nearly upright position within the open top of the pedestal, which is adapted to be closed by a top portion 16 slidable at right angles to the fixed top portion. The supporting frame 17 of the pedestal end of the table extends forwardly to support an overhanging part of the top frame 27a and also the slidable top portion, and a drawer 70 for pens &c. is fitted to the overhanging part of the top frame. A tray 75, Fig. 11, for letters &c. is removably mounted on an upright pivot 77, Fig. 1 about which it may swivel so as to lie over or clear of the rack. The latter comprises metal partitions 40, 41, Fig. 6 having upwardly inclined bottom flanges 43, some of the partitions being removably held in slots in side walls of the rack. Some of the partitions may have adjustable intermediate ledges. The sliding top, also of metal covered with linoleum &c. 52, is guided at the outer end by fixed rollers 58 and carries rollers 59 running on side tracks. It is further guided by a fixed horizontal roller 65, Fig. 9 engaging the sides of a middle longitudinal channel member 55. A buffer 69, Fdg. 6 to cushion the outward movement &c. a further buffer to limit the inward movement are provided.
Patent GB-739061-A (GB)
Title: Improvements in duplicating or other sheet handling machines
Inventor: BROWN ROLAND
IPC: B41L11/08
Filed: 1952-05-20
Abstract: 739,061. Feeding sheets. BLOCK & ANDERSON, Ltd. Aug. 20, 1953 [May 20, 1952; May 20, 1952], Nos. 12697/52 and 22946/53. Divided out of 739,060. Class 100 (1). Pile tables ; sheet-separators. -In a duplicating or other sheet - handling machine the pile table 1 has two adjustable side guides for the pile, each guide consisting of a side 2 and a base 3 and having at the forward end a hard smooth block 6 and at the rear end a rubber or other friction block 9, both blocks engaging the side edges of the pile. The table 1 is shown as applied to a hectographic copying machine having a printing-drum 25 to which the master sheet is attached, the top sheet of the pile being fed to the drum by a reciprocating friction pad 11. Each front block 6 may comprise a paper - board bonded and faced with a synthetic plastic material, and is secured to a resilient clip 5 detachablysecured to the side 2. Each rear block 9 may comprise sponge rubber attached to a resilient clip 7 detachably secured to the side 2. A back stop 10 for the pile forms part of the clip 7. The pad 11 is carried by a cranked arm 12, the other end 13 of which is journalled in a carriage 14 adapted to slide longitudinally on guides 17, 18 secured to the machine frame 20. A recess in the end 13 of the oscillating arm 12 is engaged by a latch 15 urged by a spring 16. By suitably shaping the co-operating surfaces of the recess and latch, the spring 16 can augment the pressure of the pad 11 against the top sheet. A link 21 is pivoted to the carriage 14 and to a rocker 22 having a roller 23 co-operating, under the action of a spring 26, with a cam 24 rotatable with the drum 25, whereby the carriage is reciprocated to feed a sheet until the leading edge of the sheet is arrested at the line of contact between a pair of feed rollers 28, 29. The rollers 28, 29 are intermittently rotated through a unidirectional coupling by means of a crank arm 34, rotatable with the drum 25, and a link 32 connected with the cam 34 and provided with a slot 33 engaged by a pin 31 on the radius arm of a toothed segment 30. The pin-and-slot arrangement comprise a lost-motion device so that the feed rollers are stationary during the upward motion of the link 32, and can be adjusted so that the instant at which feed movement of the rollers commences can be adjusted. Specification 739,060 is referred to.
Patent GB-1035296-A (GB)
Title: Polyam idepolyamine and manufacture of paper therewith
IPC: D21H17/55
Filed: 1964-03-25
Abstract: A process for the preparation of a water-soluble, storage-stable, cross-linked cationic polymer having substantially no reactive substituents, which process comprises substantially completely reacting a cross-linking agent with a water-soluble cationic, substantially linear polyamide polyamine in an amount sufficient to form a polymer which is cross-linked yet water soluble and which, as a 35% by weight solution in water at 80 DEG  C., has a viscosity of at least 50 centipoises.  The polyamide polyamines are made by reacting dicarboxylic acids, e.g. adipic, succinic, isophthalic, terephthalic and glycollic acid with polyalkylenepolyamines, e.g. diethylene triamine, tetraethylene pentamine, imino bis propylamine and mixtures thereof.  Specified cross-linking agents are glyoxal, 1:2-dichloroethane, divinyl sulphone, diallyl amine, epichlorohydrin, diallyl melamine, diglycidyl ether, methylene bis acrylamide and acrolein.ALSO:A process for the manufacture of paper and paper products from cullulosic fibres comprises adding a water-soluble, storage stable cationic polymer comprising a cross-linked, substantially linear polyamide-polyamine having a viscosity of at least 50 centipoises as a 33% by weight solution. in water at 80 DEG C., to an aqueous paper-making suspension of cellulosic fibres and thereafter sheeting the cellulosic fibres.  In a modification of the process, paper is saturated with an aqueous solution of the polymer and dried.  Examples are given.
Patent GB-1196084-A (GB)
Title: Distillation Apparatus for producing Salt-free Liquid from a Salt Solution
IPC: B01D3/06
Filed: 1968-03-15
Abstract: 1,196,084. Evaporators, multi-stage flash type; desalination of water. COMPAGNIE GENERALE D. ETUDES CEGELERG. 15 March. 1968 [17 March, .1967], No.12745/68. Heading B1B. Sea. water (or other salt solution) is desalinated by introducing the .preheated sea water into the top of a column divided into superposed cells by partitions 4 each having a well 5 provided with orifices 8 through which the sea water enters the cell as a spray and undergoes partial evaporation because the pressure diminishes from cell to cell in the downward direction. The column is provided with double walls with a cavity 3 between them, and the vapour condenses on the inner wall by heatexchange with sea water flowing up the cavity 3. The condensate (desalinated water) collects in troughs 9, and flows down through orifices 14, tubes 15 and orifices 13. Entrained droplets of salt water are removed from ,the vapours by louvres 7. The rate of flow of sea water through orifices 8 is controlled by a float 30 connected to a ball 32 which partially closes the crosssectional outlet area of the well 5. Provision is made for the deigasification, of the sea water before and during flash evaporation. Several columns may be juxtaposed to form a large desalination unit. Partitions 4 may be made of rubberised material.
Patent GB-257573-A (GB)
Title: Improvements in or relating to the air tight closing of preserve jars and other vessels
IPC: B65D51/16
Filed: 1926-05-18
Abstract: 257,573. Schiller, A. Aug. 29, 1925, [Convention date]. Vacuum closures for jars and other vessels comprise an outward flange 3 which extends substantially at right angles to the axis of the jar and is intended to receive a flat packing ring 4, and a lid 2, the pressure face 5 of which is made slightly conical so that the lid engages at first the outer edge of the packing ring only. The surfaces of the lid and flange are non-ground and the lid is adapted to leave a clearance for the insertion of an opening tool, between its projecting edge 6 and a second flange, which projects outwardly from the vertical flange by which the flange 3 is terminated.
Patent GB-729544-A (GB)
Title: Improvements in or relating to loudspeakers and vibration generating motors of the moving coil type
Inventor: NEWLAND EDWARD STANLEY
IPC: H04R9/04
Filed: 1951-05-30
Abstract: 729,544. Electric coils. GOODMANS INDUSTRIES, Ltd. June 24, 1952 [May 30, 1951], No. 12762/51. Class 35. [Also in Group XXXIX] In a moving coil vibration generator such as a loud-speaker, the voice coil former 5a, Fig. 2, is grooved helically at 7 to seat the bottom layer of windings 6 and thus key the complete coil. The working air gap is defined by a pole-plate 3, Fig. 1, and a central polepiece 2a which is mounted on a permanent magnet 2 and located by a non-ferrous cup-shaped member 10. The coil former is suspended on inner and outer centring members 8 mounted on screws 9 in the pole-plate. An axial boss 5c is mounted in a flexible ring 16 and is provided with a transverse hole 17 to receive a rod 18 which can be secured in posts 19 to hold the boss firm whilst the cone or other such member is attached. The use of the hole 13 in the cup-shaped member 10 to house or nest a jig whilst the moving coil is centred, is also described. Holes 14 give access to the screws 9.
Patent GB-984192-A (GB)
Title: Slip ring connector
IPC: H01R39/00
Filed: 1961-04-10
Abstract: 984,192. Collectors. F. WENZEL, [trading as RHEINISCHE KOHLEBURSTENFABRIK F. WENZEL KOMM.-GES.], E. BODE, and F. BODE, [trading as WEGMANN & CO.]. April 10, 1961 [April 11, 1960], No. 12827/61. Heading H2E. In a slip-ring connector having separate connecting systems for load currents and for lowfrequency currents (as used, for example, to provide power and telephonic communication, respectively, for a crane cabin), the two systems are so releasably mechanically interconnected that, when the low-frequency connecting system is removed, the load current connecting system continues to function without any modification. The load current system may comprise two mutually insulated concentrically mounted bushes 3 and 4, insulatingly mounted on a fixed hollow shaft 1 with the latter bush earthed, and comprising flange portions making sliding contact with rotatably mounted mutually insulated brush assemblies 9 and 10 (see Figs. 2, 3, not shown). The low-frequency current system may comprise a plurality of double-sided ring annuli 21 mounted on an insulating cylinder and pin 18, and making contact with double-contact collectors 22, slidably mounted on pillars 24, carried by bearing discs 28 and 23, which, in turn, are rotatably mounted on the insulating cylinder and pin 18. The releasable mechanical connection between the two systems may comprise a bolt 20 connecting the two stationary parts, shaft 1 and pin 18, and a dog 25 formed on the bearing disc 23, for engaging a hole in a driving disc 26 bolted to the rotating brush assemblies 9 and 10.
Patent GB-1499084-A (GB)
Title: Process for producing 1,2-benzothiazole-3-one-1,1-dioxide derivatives
IPC: C07D275/06
Filed: 1976-03-30
Abstract: 1499084 Production of 1,2-benzisothiazole- 3-one-1,1-dioxide IHARA CHEMICAL INDUSTRY CO Ltd 30 March 1976 [11 June 1975 6 Dec 1975] 12829/76 Heading C2C A process for the production of a 1,2-benzisothiazole - 3 - one - 1,1 - dioxide derivative of the formula wherein X is hydrogen, halogen, nitro, (C 1 -C 4 )- alkyl or (C 1 -C 4 )alkoxy; and Y is hydrogen, halogen, (C 1 -C 4 )alkyl or (C 1 -C 4 )alkoxy, comprises reacting phosgene with an O-sulphobenzoic acid of the formula or an alkali metal salt or alkaline earth metal salt thereof, in the presence of dimethylformamide, to produce a mixture of an O-chlorosulphonyl-benzoyl chloride and dichlorotolyl sultone, reacting this mixture with an alcohol of the formula ROH, wherein R is (C 1 -C 4 )alkyl, and reacting the resulting product with ammonia.
Patent GB-548816-A (GB)
Title: Improvements in or relating to the automatic control of electrically driven grinding, mixing and other machines
IPC: B65G23/00
Filed: 1941-10-06
Abstract: 548,816. Automatic control systems for grinding machines &c. BIRCHALL, T. Oct. 6, 1941, No. 12876. Drawings to Specification. [Class 38 (iv)]  Level of fluid material; weight; current.-The load current variation in the circuit of a motor driving a grinding or other machine operating on loose material fed by an auxiliary motor operates an excess current relay to open the circuit of an electromagnetic device whereby the feed is stopped until the current has fallen. The level of material above the grinding &c. means is thus maintained between definite limits. The electromagnetic device may be an automatic starter for the auxiliary motor or an electromagnetically actuated pawl or clutch in conveyer feeding mechanism. The relay may itself open the circuit of the auxiliary motor and may be an electromagnetic switch with adjustable reclosing spring, a gravity operated switch, such as a mercury switch, or an electronic valve, preferably of the gaseous type with a transformer determining the voltage on the control electrode.
Patent GB-603298-A (GB)
Title: Improvements in magazine talking machines
IPC: G11B17/22
Filed: 1945-05-23
Abstract: 603,298. Magazine gramophones selective signalling systems. KOSH, T. H., and WRIGHT, S. J. May 23, 1945, No. 12892. [Classes 40 (i) and 40 (ii)] A magazine gramophone which may be coinfreed, comprises pre-selector mechanism operable by the user to select one or a series of disc or cylinder records from the magazine for transfer to the playing position, and mechanism to automatically select one, or a series of a similar number of records if the pre. selection mechanism is not operated. Means also provided to effect an automatic resetting of the automatic selecting mechanism in order to vary the records selected each time the machine is operated. The machine is started in known manner and the switch 1 is closed by a cam coupled to the driving motor. The preselection means comprises a number of tablets 2-7 corresponding to the records in the magazine and controlling the spring sets 9-11. The withdrawal of the records from the magazine is controlled by solenoids 15, the circuit of each of which is completed over the corresponding spring set in the operated position and the earlier spring sets in the normal position. With the common switch 1 closed and. the motor - driven wiper 17 engaging contact 16, the solenoid 15 corresponding to the earliest operated tablet is energized, after which the passage of wiper 17 over the contacts 19 energizes a solenoid 20 to restore the operative tablet. When the first selected record has been played, wiper 17 engages contact 16 again and the next operated tablet is effective in a similar way. The automatic selection means comprises an inner ring 21 connected to strip 11 of the tablet 7, six segmental contacts 22, each connected to a solenoid 15, and a blade 23 rotated by a ratchet and pawl 24, or by a worm drive, from one contact 22 to the next each time the machine is operated to play a record, so that the solenoids 15 are energized in turn, provided no tablet is depressed. Cancellation of pre-selection is effected by a switch 25 which operates the solenoids 20 in turn. The number of records played in the case of a coin controlled machine is controlled in known manner. Specification 591,448 is referred to.
Patent GB-353935-A (GB)
Title: Improvements in supports for burners for gas or liquid fuels
IPC: F25B33/00
Filed: 1930-04-26
Abstract: 353,935. Refrigerating. ELECTRO. LUX, Ltd., 153, Regent Street, London.- (Assignees of Sellman, F. E. ; 51, East 42nd Street, New York, and Collins, W. D. ; 1519, South 2nd Street, Evansville, Indiana, both in U.S.A.) April 26, 1930, No. 12898. Convention date, April 26, 1929. [Class 29.] Absorption machines. - The burner for heating the generator C is mounted on that part of the flue 13 around which the thermosiphon coil 25 is wound so as to be concentric with, and adjustable relatively to, the flue. As shown, a gas burner B is provided with a clamp 22 adjustable on a rod 15 extending from a member 10 secured by a clamping collar 11 to the flue. The bolt 23 of the clamp 22 bears against a flat face 16 of the rod 15 thereby preventing rotation of the burner on the rod. An annular washer 12 of asbestos or the like is provided in a circumferential recess in the collar 11. The valve of the burner is controlled by a flexible diaphragm 19 to which heat from the flame is conducted by a member 20 so that the valve is closed automatically in the event of the flame being extinguished.
Patent GB-825001-A (GB)
Title: Processes of producing uranium pentachloride
IPC: C01G43/08
Filed: 1945-05-23
Abstract: Uranium pentachloride is produced by agitating uranium tetrachloride in a chlorine-containing atmosphere at 500-600 DEG  C. The tetrachloride, preferably in pulverulent form may be gradually advanced through a reactor concurrent with the chlorine and the vaporous pentachloride separated from the product gases by cooling and scrubbing with carbon tetrachloride or dichlorethane.  The scrubbing liquid is evaporated and recycled.
Patent GB-840679-A (GB)
Title: Improvements relating to helicopters with jet-driven rotor blades
Inventor: STEPAN AUGUST
IPC: B64C27/18
Filed: 1957-04-23
Abstract: 840,679. Generating combustion products under pressure. FAIREY CO., Ltd. April 16, 1958 [April 23, 1957], No. 12959/57. Class 5 (1) [Also in Groups XXVI and XXXIII] In a series of jet-propulsion units mounted side by side in a helicopter rotor blade, the combustion chamber of one unit 13 is provided with a sparking plug 27, and ignition in the remaining unit is effected by flame propagation tubes 28 connecting the primary combustion zones of adjacent combustion chambers. Air under pressure is supplied to the propulsion units through air ducts 23 extending longitudinally along the interior of the rotor blade, each duct supplying a group of six pro. pulsion units.
Patent GB-641519-A (GB)
Title: Improvements in agricultural implements
IPC: A01B35/18
Filed: 1949-06-08
Abstract: 641,519. Agricultural implements. SPURR, A. B. May 12, 1948, No. 12970. [Class 6(i)] In a steerable cultivating and hoeing implement of the kind wherein a number of tool supports 11 are connected by links 16 to a main frame 14 attached to the lifting gear of a tractor, the frame 14 being arranged for movement transverse to the direction of movement of the machine, an auxiliary frame 41 is pivotally mounted on the tractor so as to be free to lift with the frame 14, and a steering link 46 is pivotably connected at one end to a bracket 44 on the frame 41 and at the other end to a steering arm 47 pivoted on the frame 14 so that upon movement of the steering arm the frame 14 is caused to move laterally. As shown, the main frame is supported on a pair of castor wheels 23 and is connected to the tractor by links 29 and 34 having ball-jointed ends, the links 29 passing through slots in the frame 41. The steering arm 47 is extended to form a handle 52 and a seat 51 is provided. The tools comprise hoe blades 18, shares 19 and clearing discs 21, the depth of working of the tools being limited by an adjustable skid 22. When not required. each support may be lifted by hand and held out of action by the engagement of a catch member 61, with a latch member formed on a pivoted locking lever 58.
Patent GB-619228-A (GB)
Title: Improvements in or relating to circuits for generating high-frequency oscillations
IPC: A61N1/40
Filed: 1946-04-30
Abstract: 619,228. Valve generating circuits. PHILIPS LAMPS, Ltd. April 30, 1946, No. 12976. Convention date, Jan. 31, 1942. [Class 40 (vi)] An increase in the efficiency of push-pull connected oscillator using an A.C. anode supply connected to the valves in antiphase is obtained by suppressing the grid current of each valve during the half-cycle when the corresponding anode is negative. Fig. 2 shows an oscillator in which the grid coils 3 and 4 are coupled through the respective inter-electrode capacitance to anode coils 6 and 7. Coils 3 and 4 are preferably arranged to have no mutual coupling. The A.C. supply is fed to the anodes through transformer 9 and also in the same phase through transformer 15 to the grids. Alternatively, valves such as diodes or triodes may be used for the grid leaks and their impedance varied by means of the voltage obtained from transformer 15. In another arrangement, Fig. 4, the bias voltage for suppressing grid current is obtained from resistors 23 and 24 inserted in series with the anode circuits. Specifications 177,269 and 184,216, [both in Class 40 (v)], are referred to.
Patent GB-437450-A (GB)
Title: Improvements in and relating to fuel injection pumps
IPC: F02M59/46
Filed: 1934-04-30
Abstract: 437,450. Fuel - injection pumps. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London, and GRIFFITHS, L., 78, Biggin Hall Crescent, Coventry. April 30, 1934, No. 12989. [Class 102 (i)] In a fuel-injection pump the pressure in the discharge line is relieved by a ball valve 10, controlling communication with a passage 15 leading to the suction space 16. The valve is acted on by a spring 11, the pressure of which can be adjusted by means of a screw 12. The discharge from the cylinder 2 takes place through an axial groove in the valve casing 5 and, in the closed position of the discharge valve 4, this groove communicates with the passage controlled by the valve 10 through a circumferential groove in the valve 4. A screw 17 is provided for the release of air.