baber/WOPTO huggingface dataset:
Patent GB-624988-A (GB)
Title: Improvements in or relating to electric insulating mountings
IPC: H01R39/38
Filed: 1947-07-22
Abstract: 624,988. Brush-gear for dynamo-electric machines. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. July 22, 1947, No. 19586. Convention date, July 31, 1946. [Class 35] An insulating mounting, e.g. for a brushholder comprises cylindrical metal supporting and supported members 11 and 13 joined by a moulded insulating connector 15, whose outer surface 15<SP>1</SP> is of cylindrical form, coinciding with the surfaces 11<SP>1</SP>, 13<SP>1</SP> of the metal members, and a creepage surface insulator 16 with one or more bulged portions 16<SP>1</SP> fitting over the connector and secured to it by an insulating adhering layer 20. The metal members have interlocking surfaces 11<SP>11</SP>, 13<SP>11</SP> and the creepage insulator is of porcelain glazed on its outer surface only. The adhering layer 20 is non- shrinking and rubber-like, suitable materials being mentioned.
Patent GB-515817-A (GB)
Title: Improvements in and relating to skates
IPC: B24B3/00
Filed: 1938-07-02
Abstract: 515,817. Grinding, skates. LOW, T. P. C., and STOCK, C. S. 'July 2, 1938, No. 19684. [Class 60] [Also in Group XV] The hollow-ground surface 8 of the blade 1 of an ice skate is shallower at the intermediate portion than at the ends, this being effected by varying the angular position of the grinding wheel 2 relative to the surface 8 as the wheel .(or blade) is traversed along the blade (or wheel). As shown in Fig. 2, the wheel 2 is mounted in a holder 6 pivoted about an axis 7 perpendicular to the plane of the blade 1, so that the axis of the wheel can be swung, during traverse, in the plane of the blade. As shown in Fig. 3, a conical wheel 2, the axis of which lies in the plane of the blade, is used, the blade being moved so that, when grinding the end portions, the surface 8 engages the smaller diameter end of the wheel, while, when grinding the intermediate portion, the surface 8 engages the larger diameter end of the wheel. Alternatively, 'the wheel may be swung in a plane perpendicular to the-plane of the blade., The intermediate portion may be ground to a shallow V-shape. Specification 481,800, [Group XV], is referred to.
Patent GB-168046-A (GB)
Title: A device for grinding machines for precious stones for advancing the dop carrier and withdrawing this when the work piece has been finished
IPC: B24B9/16
Filed: 1921-07-22
Abstract: 168,046. Leperre, E. F. A. C. Aug. 20, 1920, [Convention date]. Gems, treating; feed devices. - Comprises automatic means for feeding a precious stone against a grinding-surface until the required amount is removed, and for then withdrawing the stone. The stone support 1, Fig. 1, is mounted in a cylindrical casing 3 enclosing the exciting-coil 4, Figs. 1 and 3, of an electromagnet, the casing being movable outwards against the action of a spring 16. The core 5 of the magnet has pivoted thereto two levers 6, carrying rollers 7, which bear on a lever 8, and bearing on the levers are rollers 7<1> mounted in the casing. The position of the lever 8 is adjustable by means of a screw 12 connected to a lever 9 pivoted at 11 and connected to the lever 8. On energizing the coil 4, the core 5 is attracted, and by means of the levers 6 moves the casing outwards to move the stone into contact with the grinding-surface. The circuit of the coil 4 is closed by the end 24 of a hinged plate 24, which bridges contacts 23, the bridging of the contacts also closing the circuit of a magnet 22, which holds the plate down against the action of a spring. To the casing is connected a slider 17, which operates the pointer 20 of a dial indicator; the dial carries an electric contact 21 at the zero point. The indicator dial is set so that, when the required amount has been ground off the stone, the pointer contacts with the contact 21 and short-circuits the magnet 22; this allows the plate 24 to spring up and open the circuit of the coil 4, and the spring 16 then withdraws the stone from the grinding-surface. The core 5 is connected by a cord 28 with a hand-lever 26 supported on a spring 27, whereby the operator can control the feed of the stone towards the grinding-tool.
Patent GB-296866-A (GB)
Title: Improvements in the manufacture of electric radiators
IPC: F24H3/00
Filed: 1927-07-26
Abstract: 296,866. Bates, A., (trading as Willis & Bates). July 26, 1927. Electric radiators.- The radiator comprises a vertical tube a radiused out at the bottom to join a large cylindrical base provided with air inlets, a heating element compris ing a hollow cone. b wound with a resistance c and situated at the top of the tube. and a cap d situated above the heating element. Air flows up the tube and is diverted over the resistance by the cap. The cap may be of glass or metal. It may be mounted on a pivot e and provided with internal vanes so as to be rotated by the air stream. It may be smoke camouflaged and protected by a perforated bonnet so as to produce an imitation fire effect. The air stream may also set in motion suspended ribbons. A second heating element f and cap g may be provided.
Patent GB-251495-A (GB)
Title: A new and improved process for the recovery of hydrochloric acid from ferrous chloride solutions
IPC: C01B7/03
Filed: 1925-08-06
Abstract: 251,495. Ensoll, R. Aug. 6. 1925. Hydrochloric acid is recovered from waste pickle-liquor or other solution of ferrous chloride which may contain free hydrochloric acid by gradually passing it into a heated bath of sulphuric acid whereby hydrochloric acid is evolved and a pasty mass of ferrous sulphate is obtained as a residue. In the plant shown in the Figure, ferrous chloride is fed from a tank H into a heated retort B containing sulphuric acid supplied from a tank A. The hydrochloric acid evolved is cooled in a condenser G and is collected in a vessel K. Uncondensed vapours pass to a scrubber M and finally to the stack P. The addition of ferrous chloride is stopped when a - quantity equivalent to the sulphuric acid employed has been introduced but the distillation is continued until a pasty residue is obtained which is then discharged through a door 0.
Patent GB-593406-A (GB)
Title: Improvements in or relating to piezo-electric transducers
IPC: B06B1/06
Filed: 1943-11-26
Abstract: 593,406. Pipe joints. BRUSH DEVELOPMENT CO. Nov. 26, 1943, No. 19820. Convention date, June 4, 1942. [Class 99 (i)] [Also in Groups XXXVI, XXXIX and XL] In making a strong fluid tight joint between a rubber tube 5 and a brass stem 17, the tube 5 is passed on to a serrated nipple 19 and bound with copper wire 21 which is spot soldered in places. The wire is then copper plated at 23 to bond it together and to the stem 17.
Patent GB-688224-A (GB)
Title: Laundry apparatus for folding flat pieces of material
Inventor: JENNER HARRY DAVID
IPC: D06F89/00
Filed: 1950-08-09
Abstract: 688,224. Folding fabrics. JENNER, Ltd., A. & C. Aug. 9, 1950. No. 19831/50. Addition to 649,333. Class 42 (ii). In a folding machine as described in the parent Specification, the work support is caused to reciprocate at a uniform speed over substantially the whole of its stroke by a reversible electric motor, which also returns it to its starting position as soon as the work is completely delivered from the feeding conveyer. Flat sheets from a calender Care delivered by the conveyer B in contact with the belt D and deposited in folds on carriage G which is reciprocable along rails I by chains J, driven at substantially uniform speed by the reversible electric motor L. The work-supporting surface of the carriage G is formed by two conveyers M and N, Fig 3, which, when driven by the electric motor O, cross-fold and deposit the work on a conveyer R, which delivers it to a receiving table. On passing between the conveyer B and belt D, the sheet separates a detector switch formed by the contact rollers E, F, included in an electric circuit which then causes the following sequence of operations :- The motor L is started to move the carriage G from its base position, its movement being periodically reversed by adjustably positioned limit switches at either end of its path, until the work passes from between the rollers E, F, when the carriage is returned to its base position. After an interval, the motor O is caused to operate for a few seconds by a time switch to drive the cross-folding and take-off conveyers. The delivery conveyer R is caused to run continuously by a separate motor Q. Magnetic brakes or means for injecting direct current for the correct period are provided for bringing the motors L and Q to an immediate standstill. Overtravel limit switches are provided for the carriage G, and a timing device may be incorporated to delay the starting of the motor L after the rollers E, F are separated.
Patent GB-891669-A (GB)
Title: Mowing machines
IPC: A01D34/44
Filed: 1957-06-24
Abstract: 891,669. Mowers ; mowing machines. BORROW, E. W. June 23, 1958 [June 24, 1957], No: 19879/57. Classes 6(2) and 6(3). A mowing machine comprises two rotary cutter units, which either co-operate with adjustable ledger blades or cut by impact and are so mounted on the front of a tractor that there is little or no space between the swaths cut by the respective units. As illustrated, the machine comprises two frusto-conical cutting units each having helical blades mounted on a hollow shaft 2 which is rotatable about and slidable relative to a shaft 6. Each shaft 6 is supported in a framework comprising longitudinal members 7, 8, 9 and end plates 10, 11, the latter comprising arms 14 each of which is integral with a disc 15, integral with the respective shaft 6. The discs 15 of the two cutter units are interleaved and pivoted on a pin 16. The plates 10, 11 also carry bearings for the respective shaft 2, the bearings supported by plates 11 being situated within the envelopes of their respective set of cutter blades, with the result that the plates 11 may be closely adjacent, particularly at the lowermost point of their circumference, as shown in Fig. 1. If the units are tilted about the pivot pin 16, the shafts 2 slide relative to the shafts 6 to maintain the proximity of the plates 11. The cutter units are each supported by ground wheels 19, 20, and also by parallel linkages from a beam 21 supported in front of a tractor and connected to the hydraulic lift links of the latter. The units are driven via belts and pulleys 32, 33, 34 from a shaft 31 housed within said beam 21 and driven from the power take-off of the tractor. In the event of there being a gap between the two units, either a knife blade may be incorporated in the machine for diverting the grass into the path of one or other cutter unit, or a small, auxiliary rotary cutter may be provided for cutting the remaining strip of grass.
Patent GB-1289258-A (GB)
Title: Fluid supply system for a vehicle
Inventor: STEVENSON PAUL D
IPC: F16H61/00
Filed: 1971-06-10
Abstract: 1289258 Power steering GENERAL MOTORS CORP 10 June 1971 [1 July 1970] 19880/71 Heading B7H [Also in Division F2] A vehicle hydraulic supply system for a power-steering system 12 which requires a maximum flow rate of, say, 3 gallons per minute (g.p.m.) and an automatic transmission control requiring a greater maximum flow of, say, 8 g.p.m. comprises a vane-type pump 14 which supplies fluid to a first valve 28 having a spool 36 normally biased to the left by spring 41. Spool 36 has a central bore 37 such that when the flow through it exceeds 8 g.p.m. the spool moves to the right exhausting fluid back to an aspirator 21 in order to supercharge the pump and prevent cavitation. Fluid from first valve 28 passes through a second valve 30 up to a rate of 3 g.p.m. whereupon spool 46 moves to the right so that excess fluid flows direct to the transmission control (not shown) via line 54. Fluid issuing from valve 30 via line 50 passes through power-steering system 12 and thence also to the transmission control via line 54. A further valve 10 may be provided to control fluid flow to a torque converter via line 86.
Patent GB-810945-A (GB)
Title: Improvements in and relating to clothes drying machines
Inventor: WARREN JOHN WILLIAM
IPC: D06F58/18
Filed: 1954-07-08
Abstract: 810,945. Drying clothes. ENGLISH ELECTRIC CO. Ltd. July 1, 1955 [July 8, 1954], No. 20012/54. Class 34(2) In a clothes drier of the kind set forth in Specification 732,598 the heating element circuit is controlled by a thermostat 8 which resets itself automatically and a reflector 10 is secured to the wire guard 7 to intercept radiation and prevent damage to the clothes if the heater element 4 overheats due to obstruction of air flow. A further reflector 11 between the element 4 and the sheet metal component 1 of the drier door prevents damage to the finish of the door.
Patent GB-148131-A (GB)
Title: Improvements in and relating to the generation of high frequency oscillations
IPC: H03B7/04
Filed: 1920-07-09
Abstract: 148,131. British Thomson - Houston Co., (Assignees of White, W. C.). June 3, 1918, [Convention date]. Vacuum tubes.-Oscillations are produced by a three-electrode thermionic valve having a resonant grid circuit, by arranging that the grid current varies inversely as the grid voltage over the operating range of negative grid potential. The oscillator may be employed as a heterodyne receiver. Fig. 1 shows the valve so applied, and Fig. 2 shows the grid current, grid voltage characteristic. The grid circuit of the valve comprises an inductance 5 and variable condenser 6 in series, and the grid is given a normal negative potential by a battery 7 connected through choke-coils 8, 9. The negative resistance of the grid-filament path over the range BC is explained by the fact that an increase of negative potential on the grid decreases the plate current and so reduces the ionization of the residual gas, thereby reducing the grid current. A high plate potential, say 375 volts, is required to secure the desired result.
Patent GB-408655-A (GB)
Title: Improvements relating to the cylinders and combustion chambers of two stroke internal combustion engines
IPC: F01L5/04
Filed: 1932-07-15
Abstract: 408,655. Oil engines; cylinders. JAMESON, J. L., Elland, Hemingford Road, Cheam, Surrey. July 15, 1932, No. 20091. [Classes 7 (ii) and 7 (iii).] Air or combustible mixture from an annular chamber c passes through ports d controlled by a reciprocating piston valve a, coaxial with the working piston b, to a combustion chamber connected to the cylinder n by a throat l formed with helical grooves which whirl the charge entering the combustion chamber from the cylinder. The combustion chamber is spherical and its upper half is formed in the piston valve a to reduce the overall height of the engine. A sparking-plug i or an injection nozzle o is mounted in the thickest portion of the cylinder head adjacent the throat, and the former operates in a passage k byepassing the throat, while the latter is disposed tangentially to the combustion chamber.
Patent GB-1468730-A (GB)
Title: Headlamp lens wiper
IPC: B60S1/60
Filed: 1974-05-07
Abstract: 1468730 Cleaning vehicle headlamp lenses CIBIE-PROJECTEURS 7 May 1974 [18 June 1973] 20111/74 Heading A4F A vehicle head-lamp wiper comprises a link B pivotally connected to a wiper arm P, means, e.g. a motor M, for continuously rotating the link B, and a stop A for so guiding the arm P that, on rotation of the link B, the arm P describes a rotary and longitudinal translating movement with respect to the stop A. In the embodiment illustrated in Fig. I the stop A engages in a slot L, in the arm P. In another embodiment a U-section arm P passes through a correspondingly shaped slot L 2  Fig. 3, (not shown) in the end of the stop A, which is acted upon by a spring (T) for urging the wiper element against the head-lamp lens surface.
Patent GB-1462122-A (GB)
Title: Collapsible structure
IPC: B62B7/08
Filed: 1974-05-08
Abstract: 1462122 Collapsible push chairs FTM (WARE) Ltd 8 Aug 1975 [8 May 1974] 20279/74 Heading B7B A collapsible push chair includes two side frames each comprising four members 1, 2, 5 and 7 pivotally connected to define a quadrilateral in the partially-collapsed position illustrated and a triangle with members 1, 2 aligned in the erected position. Fifth and sixth members 10, 11 pivotally connected to their respective side frames, support a seat canvas 25. A two-part cross-bar 13, 14 is pivotally connected between members 2, struts 15, 16 connecting the crossarrangement interconnects the lower ends of frame members 5, Fig. 3 (not shown). Each member 1 carries a rod 21 extending towards the opposite member 1, the rods being joined by a spring to form a handle. A sleeve 22 is slid over the intermediate spring to prevent collapse of the handle in use.
Patent GB-1106694-A (GB)
Title: Improvements in or relating to pulse transmitting circuits
IPC: H03K5/01
Filed: 1965-05-13
Abstract: 1,106,694. Semi-conductor pulse circuits. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 13 May, 1965 [6 Aug., 1964], No. 20306/65. Heading H3T. The duration of overshoot in the output of a pulse transformer is reduced by connecting a Zener diode in series with the load so that the diode is forward biased by the pulse and is driven into its Zener breakdown region by the beginning of the overshoot, becoming non- conductive when the overshoot voltage falls below the Zener breakdown voltage. When the primary of the pulse transformer is driven by a switching transistor, the arrangement is stated to facilitate turning off the transistor.
Patent GB-386340-A (GB)
Title: Improved apparatus and process for printing letterheads
IPC: B41F1/22
Filed: 1931-07-16
Abstract: 386,340. Cutting paper webs. ROSENTHAL, A., 337, Ionia Street, Northwest, Grand Rapids, Michigan, U.S.A. July 16, 1931, No. 20449. [Class 31 (i).] Letterheads are prepared by setting a pair of letterhead dies in opposed relation to print on a paper web, delivering the web thence step by step in lengths equivalent to two letter heads, and severing the web at the two imprints at the same time by one cut between the opposed imprints. The web 4 is printed by the press 1, a second press 2 being provided if several colours are required, passes to the stationary grippers 7, 8, and is fed intermittently by grippers 9, 10 to cutting-shears 11, 12 when a sheet delivery device 13, 14 discharges the sheets to an endless conveyer 15. The web is held stationary while the cutting- shears 11, 12 operate. The shears each comprise a fixed lower blade and a pivoted upper member, both upper members being operated at the same time by cams mounted on a common shaft.
Patent GB-404692-A (GB)
Title: Improvements in electric lamps
IPC: F21S8/06
Filed: 1932-07-20
Abstract: 404,692. Overhead electric lamps. HUGHES, V. A. B., 2, Pall Mall, Manchester.- (Tucker, S. J. ; 150, 88th Avenue, Jamaica, Long Island, New York, U.S.A.) July 20, 1932, No. 20491. [Classes 75 (ii) and 75 (iv).] In an overhead electric lamp the end of the bulb a is surrounded by a reflector f which extends substantially to the line of the filament b and a relatively flat dish or bowl e is disposed around the upper portion of the bulb so as not to appreciably intercept rays from the reflector. The latter is supported by wires i and is spaced from the bowl by tubular distance pieces to provide a narrow gap g, the bowl being made of aluminium with a polished or matt white upper surface and a matt under surface which may be painted or ornamented. Alternatively the bowl may rest directly on the reflector and be made of translucent material such as partly frosted and partly clear glass. The reflector may be spun or stamped to hemispherical shape and silvered on the inside, or a similar ornamental fitting may contain a silvered glass reflector or surround a silvered portion of the bulb. The upper portion of the bulb may be frosted or fitted with a frosted cover. According to the Provisional Specification the dish may be supported from the lamp holder cover by means of chains or by a bayonet or other joint from a member upon the cover, and the reflector may be secured in spaced relationship to the dish as by means of three fins.
Patent GB-1163183-A (GB)
Title: Improvements relating to Load Transport Vehicles
Inventor: BJOERKLUND BERTIL LENNART SIXT
IPC: B60P1/64
Filed: 1967-05-03
Abstract: 1,163,183. Transporting special loads. B. L. S. BJORKLUND. 3 May, 1967 [5 May, 1966], No. 20509/67. Heading B7B. [Also in Division B8] A trailer for transporting a load container 7 comprises a U-shaped frame 2, 3 mounted on wheels 5 and provided at each side with a load support 6 adapted to be pivoted about an axis 8 by an hydraulic ram 11 to engage beneath the container. Raising a coupling device 4 by means of a vehicle such as a lift truck raises the load container from the ground whereby the trailer may be towed by a towing vehicle.
Patent GB-774701-A (GB)
Title: Improvements in or relating to pumps
IPC: F04B9/00
Filed: 1954-07-14
Abstract: 774,701. Lubricating pumps. GULLICK, Ltd., and SEAMAN, T. June 24,1955 [June. 14, 1954], No. 20514/54. Class 102(1) A pump piston 12 is actuated in one direction by a cam 13 and in the other by an auxiliary piston 20 engaging an abutment 22 on the piston 12 and operating in an auxiliary cylinder 21 connected by a duct 22a to at least one other auxiliary cylinder and piston associated with another pump piston driven by a further and out of phase cam. A spring loaded compensating piston 24 is connected to the duct 22a which with the cylinders 21 is filled with liquid.
Patent GB-772047-A (GB)
Title: Improvements in, or relating to, drafting machines
Inventor: THOMAS BERNARD DENNIS
IPC: B43L13/08
Filed: 1953-07-24
Abstract: 772,047. Draughting machines. MAVITTA DRAFTING MACHINES, Ltd. July 21, 1954 [July 24, 1953], No. 20559/53. Class 97(3) A head for a draughting machine has a domed knob rotatable relatively to an index plate carried upon an arm of the machine, the index plate has a ring of equally spaced recesses, a manually-operated trigger mounted within the knob is spring-driven into any of the recesses, and a spring-loaded plunger is installed in the knob to engage the trigger when it is disengaged from the index plate. As shown, an index plate 4 is secured to a housing 5 carried by an arm of a draughting machine. A bolt 3 journalled in the housing is fixed at its upper end to a degree plate 2 which carries a domed knob 1. A pair of arms 7 with straight edges 8 at right-angles is mounted on the lower end of bolt 3. An L-shaped trigger 21 is mounted on a spindle 17 mounted in lugs 15 on both sides of a slot 16 in the degree plate 2, and has a nose 23 urged by action of a spring 22 through slot 16 into one of a series of notches 9 formed in the index plate 4 in a ring with an angular separation of 15 degrees. A finger piece 25 secured to the trigged and projecting through the wall of knob 1 enables the nose 23 to be lifted out of engagement with the index plate. A plunger 27 slidably mounted in the knob 1 and urged outward by a spring 28, may be pushed in until its enlarged end 29 engages the trigger 21, when it is raised to hold it out of engagement with the index plate. A bracket (not shown) secured to the index plate carries a vernier 30 which, in conjunction with the scale on the degree plate 2, enables the straight edges to be set accurately to a desired angle. Specification 763,333 is referred to.