baber/WOPTO huggingface dataset:
Patent GB-271622-A (GB)
Title: Improvements in means for maintaining constant the speed of electrical motors
IPC: H02P5/48
Filed: 1926-04-28
Abstract: 271,622. Tasker, E. E. April 28, 1926. Centrifugal governors; differential governors; electric governors.-In speedmaintaining systems for a number of electric motors as used in machines for paper-making, printing or pumping, each motor is in driving connection through a variable speed gear with a centrifugal or other governor adapted to maintain the speed of the particular motor by automatic. field regulation or other known means, and a common control shaft or equivalent device is provided for varying simultaneously the ratios of all the speed gears. An individual adjustment is also provided for each variable speed gear. The motors may be electrically fed in common and controlled on the Ward Leonard principle by a generator having a main exciter regulatable at will and an auxiliary exciter exerting a differential compounding effect, the main exciter also supplying the motor fields through a separate regulator. The governor mechanism may take any of the following forms. (1) A simple or differential centrifugal governor acting on an electric switch controlling a shunt regulator, with or without a fluid pressure servomotor between governor and switch, and with or without means for adjustably damping the governor movement by a piston in a cylinder of liquid. (2) A differential governor as shown in Fig. 1<b>, consisting of two rings of electromagnets 23, 23a revolving close to opposite faces of a biassed metal disc 24, the oscillation of which controls the field regulator. (3) A differential governor similar in principle to the above, in which electromagnets mounted on spider frames revolve inside and outside a biassed cylinder.
Patent GB-733515-A (GB)
Title: Improvements in or relating to the separating of liquids and solids
IPC: B01D17/00
Filed: 1953-04-23
Abstract: 733,515. Centrifugal separators. AKTIEBOLAGET SEPARATOR. April 23, 1953 [May 28, 1952], No. 11209/53. Class 23. During the centrifugal separation of mixtures such as a mixture of oil, water, and sludge, the sludge is subjected to mechanical working to free it from adhering liquid. As shown in Fig. 2 the oil mixture is fed to the interior of the separator rotor by a pipe 16 to form layers 22, 23, 24 containing oil, water and sludge respectively. A member 26 carrying paddles 28, 29 and a screw conveyer 20 rotates at a speed different from that of the rotor, the paddles being inclined to one another to work the sludge besides moving it downwardly for discharge by the conveyer through an outlet 19. Water is discharged through outlets 18 and oil is discharged by a skimming device 17. In modifications in which the conveyer extends over the whole length of the rotor, paddles are provided over the cylindrical part, or alternatively the cylindrical part of the conveyer has a less pitch than the conical part. In a further modification (Fig. 1, not shown) the conveyer and outlets 18 are not provided and the paddles do not move the sludge axially, oil and water being separately removed by the skimming device and the rotor being stopped for discharge of sludge. In the construction shown in Fig. 3 the mixture is supplied to the rotor by a pipe 36, oil, water and sludge discharging from outlets 37, 38, 39 respectively. The beaters 28, 29 also direct the sludge towards the outlets 39.
Patent GB-1517833-A (GB)
Title: Circuit arrangement for extinguishing thyristors
IPC: H03K17/732
Filed: 1976-03-19
Abstract: 1517833 Commutating thyristors W ANSORGE 19 March 1976 [12 June 1975] 11273/76 Heading H2F In a circuit for selectively turning off -a plurality of thyristors 15, controlling respective loads 19, a common commutating circuit 10 comprising a source of unidirectional power such as a capacitor 14, charged from a rectifier 13, switched to a pair of commutating lines capable of being switched across each load 19 by means of a respective double-pole pair of thyristors 17, 18. The DC supply for the main thyristor 15 may be deriued from AC via transformer 5 and rectifier 6. The commutating voltage may alternatively be derived from a three-phase supply by the use of three transformers 11 feeding respective single-phase bridge rectifiers 13 (Fig. 2, not shown), the resulting D.C. supply being sufficiently smooth that capacitor 14 may be omitted.
Patent GB-681840-A (GB)
Title: Improvements in gas fires
IPC: F24C3/04
Filed: 1950-05-06
Abstract: 681,840. Gas fires. WRIGHT, R. H. May 7, 1951 [May 6, 1950] No. 11275/50. Class 126 A gas fire comprises a frame supporting a contoured reflector extending downwards from the top edge in a curve to a horizontal front portion, a longitudinal slot parallel to the front edge and a short distance from it through which a row of burners project and an incandescent element arranged above the slot and heated by the burners. The frame comprises two end members A, Fig. 1, of bent wire or rod, with domed tops, curved front, vertical back and concave base connected by several longitudinal wires or bars a<SP>1</SP>... a<SP>4</SP> the reflector B being secured to bars a<SP>1</SP> and a<SP>4</SP>. Burners c supported by a box D project through a slot near the front edge of the reflector, to heat an incandescent element E, preferably of expanded metal bent into. inverted U-shape. A row of apertures is formed in the reflector behind the slot, Fig. 3 (not shown), to admit a stream of air which cools the reflector B, thereby becoming heated. The end members A are stiffened by cross struts a and the horizontal bars a<SP>2</SP>, a<SP>3</SP> form a guard for the fire. A carrying handle H is provided.
Patent GB-777643-A (GB)
Title: Improvements in or relating to coated paper receptacles and method of producing the same
Inventor: NORMAN DANIEL PHINEAS
IPC: B65D65/42
Filed: 1955-04-19
Abstract: A paper receptacle is made liquid-resistant by coating it with an aqueous dispersion of a curable amine-aldehyde resin and a thermoplastic resin having reactive side groups, and causing co-condensation of the amino resin and the thermoplastic resin as by heating.  The co-condensation may be assisted by a catalyst, and a wetting agent, such as the sodium sulfonate of an acid ester of an aliphatic compound, may be included to prevent and disperse air bubbles.  The amino resins are selected from water-dispersible amine-aldehyde resins.  The amine may be urea, melamine or dicyandiamide.  The aldehyde may be formaldehyde, furfuraldehyde or acetaldehyde.  The reactive side groups may be hydroxyl, carboxyl, nitrite or ketone or mixtures of such groups. The thermoplastic resin may include a vinyl resin.  Polystyrene, polyvinyl acetate and polyacrylonitrile are suitable.  The amount of thermoplastic resin should be about 5 to 10 per cent of the amine-aldehyde resin.
Patent GB-368118-A (GB)
Title: A pneumatic pistol for spraying liquids
IPC: B05B7/24
Filed: 1931-04-16
Abstract: 368,118. Spray - producers. RICHTER, A., 73, Bayrische Strasse, Leipsic, Germany. April 16, 1931, No. 11318. Convention date, June 13, 1930. [Class 69 (iii).] A spraying pistol, more particularly for spraying cleansing liquid on motor vehicles &c. and which may be operated by pulsating air pressure, e.g; supplied by a cylinder of an internal-combustion engine from which a sparking-plug has been removed, is provided with an air chamber b in the stock, a screw valve h regulating the air supply to a discharge barrel k, a throttled duct d controlling the admission of liquid from a container c to the barrel k and a screw stopper l for closing the nozzle when out of use. The supply of liquid to the barrel k may be through a calibrated nozzle. The chamber b may be partially filled with filtering material such as shavings i.
Patent GB-998067-A (GB)
Title: Sheet feeding mechanism
IPC: B65H3/06
Filed: 1963-03-22
Abstract: 998,067. Feeding sheets. EASTMAN KODAK CO. March 22, 1963 [March 26, 1962], No. 11366/63. Heading B6B. Sheet-feeding apparatus, described for use in separating sheets sequentially from the top of a pile, comprises at least one feed roller 18 which can be driven to feed a sheet by frictional engagement therewith, and a lost-motion driving connection between the drive means and the feed roller to provide an initial delay between the actuation of the drive means and the driving of the roller. As described, two feed rollers 18 of polyurethane or like material are secured on a shaft 12 in a frame 10 which is pivoted about a shaft 54, and a worm gear integral with a hub segment 24 is rotatably mounted on the shaft 12 and is driven clockwise by a worm on a drive shaft which is coupled through a spring coupling 30 to a drive motor. A pin 22 on the shaft 12 is engaged by the shoulder 36 on the hub 24 to drive the shaft 12 and rollers 18 until the top sheet 34 of a pile 38 engages a stop 40, whereupon the drive motor is stopped. When the sheet 34 is then pulled away by hand, the sheet rotates the rollers 18 counter-clockwise until the pin 22 engages the opposite shoulder 42 of the hub 24. Thus, when the motor is started to feed the next sheet of the pile, the hub segment 24 has to rotate through about 180 degrees before the pin 22 is engaged by the shoulder 36 to drive the shaft 12, and a sharp initial kick is imparted to the top sheet to break away quickly from the pile, thereby reducing the possibility of double feeding. A U-shaped bracket 44 is slotted at 46 to engage over-pins 48 on the frame 10, and has a lower lip 52. When the pile 38 of sheets is pushed along the base 50 of the storage compartment, the pile engages the lip 52 and moves it forwardly beneath the rollers 18 to raise the latter away from the pile and allow easy insertion of the pile beneath the rollers. With the pile in position, as shown in Fig. 4, the rollers rest on the lip 52, and when the motor is started the rollers act frictionally to swing the bracket 44 upwardly so that they can rest on the top sheet of the pile. Specification 998,068 is referred to.
Patent GB-932031-A (GB)
Title: Improvements in and relating to reciprocating pumps
IPC: F04B5/02
Filed: 1960-03-31
Abstract: 932,031. Reciprocating pumps. DEKA S.A. March 31, 1960 [March 31, 1959], No. 11446/60. Drawings to Specification. Class 102(1). The inlet and outlet valves of a reciprocating pump are connected to pistons in cylinders so interconnected that the opening of one valve assists the closing of the other and vice versa.
Patent GB-1164086-A (GB)
Title: An Arrangement in Expanding-Type Winding Heads
IPC: B21C47/30
Filed: 1968-03-08
Abstract: 1,164,086. Securing reels on shafts. SVENSKA METALLVERKEN A.B. 8 March, 1968 [17 March, 1967], No. 11472/68. Heading F2U. A spring-engaged, hydraulically released, collapsible mandrel for supporting a wire-coiling drum 36 comprises a number of stepped tapered bore segments 28, 29 arranged in a ring around a correspondingly tapered core head 21 and expanded into engagement with the drum 36 by a number of Belleville spring washers acting via a push-pull rod 37, release of the drum being effected manually by fluid pressure supplied via a stuffing-box 59 to a cylinder 53, fast with the core 21, thrusting a piston 55, 56 to axially move the rod 37 to relieve the spring pressure and contract and release the ring of segments from the drum. The core 21 is gear driven at 15, 17 via an electric motor 20, the whole unit being carried by a stand 10. The Belleville spring washers may be replaced by a compression spring or in an alternative arrangement (not shown) a tension spring.
Patent GB-274973-A (GB)
Title: Control system for aircraft
IPC: B64C9/00
Filed: 1926-05-01
Abstract: 274,973. Muir, N. S. May 1, 1926. Screw and like propellers.-Blades hinged to their boss so as to move under the action of centrifugal and air forces, have means for automatically varying their pitch as they rise and fall in order to damp their oscillations, and the mean pitch may be manually adjusted. The blades are pivoted about their spars which are pivoted to the boss about horizontal axes, and as the spars tilt the incidence of the blades is varied by pinions G thereon which engage sectors pivoted about the spar axes but maintained in contact with a cam ring F by springs K. By turning the cam ring F by a cable L the sectors are moved to vary the mean pitch of the blades.
Patent GB-623326-A (GB)
Title: Improvements in or relating to glass ampoules
IPC: A61J1/06
Filed: 1947-04-30
Abstract: 623,326. Making ampoules. JOHNSEN & JORGENSEN FLINT GLASS, Ltd., and THRONDSEN, I. B. April 30, 1947, No. 11543. [Class 56] In the manufacture of glass ampoules. twin ampoules connected by a common stem are first made and during this process the pressure externally and internally of the ampoule is substantially equalized to prevent the formation of a partial vacuum in the finished ampoule on cooling. This is accomplished either by making a hole in the connecting stem either by a sharp acetylene or oxy hydrogen flame or an electric spark during the manufacture or having spaced holes in the original tube, or by making a portion of the stem more plastic, i.e. hotter, than other heated parts. In this way a twin ampoule with a flat bottom at each end is produced, which may later be broken into two ampoules, with the hole in the stem facilitating the break. Since there is no vacuum in the first completed half of the ampoule no deformation of the second half occurs as it is bottomed &c. and no splinters are sucked into the ampoules when they are divided. Specification 518,295 is referred to.
Patent GB-687393-A (GB)
Title: Improvements in and relating to planing machines
IPC: B23D1/02
Filed: 1951-05-17
Abstract: 687,393. Planing. WALDRICH, O. May 17, 1951 [May 17, 1950], No. 11584/51. Class 83 (iii). A planing machine having a bed 8 carrying a reciprocating work-table is provided with a baseplate 5, of iron or other suitable material, to which the bed 8 and the column or columns 9 are secured; the columns are preferably also secured to the bed by bolts 10. The base-plate may be extended on one or both sides and provided with a series of tapped holes so that one or both columns can be mounted at a distance from the bed, the gap being preferably filled by spacers; the top cross-member must then be replaced by another member, but the sliding beam can be refitted and provided with a wider stiffening box on its rear side. The columns may also be secured and pre-stressed by tie-bars 13 connected by hammer-heads 15 to anchor plates 14 in or below the concrete foundations.
Patent GB-592373-A (GB)
Title: A new or improved road sign
IPC: G09F7/10
Filed: 1945-05-07
Abstract: 592,373. Display boards. BRYAN, L., and WALKER, W. E. May 7, 1945, No. 11590. [Class 3 (ii)] A road sign comprises a board 10 in the lower front half of which is provided a frame 20, which may be glazed, in which is displayed a street plan or map. On each side and above the frame 20 are a plurality of parallel grids 22 into the grooves of which can be slid panels 23 bearing display matter. Hinged and angle bars 27, or alternatively stapled locking bars, are provided for retaining the panels in place. The backing 10 may be built up of tensioned wood strips, or may be of metal with angle-iron framing.
Patent GB-1414093-A (GB)
Title: Butterfly valve
IPC: F16K1/22
Filed: 1973-03-09
Abstract: 1414093 Valves G A FELTON 4 June 1974 [9 March 1973] 11621/73 Heading F2V A plastics butterfly valve generally as described in Specification 1,259,846 is modified by making the mounting shaft 6 of resin impregnated fibres of glass, aromatic polyamide or carbon, wound singly or in combination. The fibres may be helically arranged at an angle of 40 to 60 degrees to the shaft axis. The reinforcement members 13 are of fibres extending lengthwise of the members and pass through holes in shaft 6 in order to secure blade 2 to the latter. The housing 1 is moulded in one piece or in two semi-cylindrical sections which are then bonded together. The housing material may be resin of epoxy, vinyl ester or polyphenylene oxide.
Patent GB-219739-A (GB)
Title: Improvements in methods and apparatus for pulverising coal or other fuel and feedingit for combustion
IPC: B02C13/26
Filed: 1923-04-30
Abstract: 219,739. White, A. E., (Aero Pulverizer Co.). April 30, 1923. Fuel, feeding.-In pulverizing coal and other fuel and feeding it for combustion, the coal &c. is driven through the crusher and pulverizer by a high-pressure fan of small capacity, and a low-pressure fan of large capacity supplies the additional air that is required for combustion. The fuel is pulverized while confined in a restricted annular passage, the material and air moving through the passage with an accelerat. ing velocity towards the outlet, and being advanced after it leaves the pulverizer by added air which is in excess of the air used in moving the material through the pulverizer. The crushing and pulverizing members are arranged within a stationary drum 4, Figs. 1 and 5, into which the coal is fed through a shoot 5<a> and an opening in the head 6 of the drum. The crushing-chamber 7 is provided on the inside with blades 11 and contains a beater consisting of blades 9 mounted on a carrier 8 keyed to the shaft 1. An annular flange 12 extends inwardly at the outlet side of the chamber 7. The pulverizing-chamber 14 contains a drum 15 mounted on a carrier formed by a hub 17 and flanges 16. The beater-blades 20 of the drum 15 operate in conjunction with blades 22 extending axially along the attrition surface 21 on the inner wall of the drum 4. The blades 20 are preferably arranged spirally, and the drum 15 is preferably slightly conical so that the annular passage between the drum and the surface 21 is more restricted at the outlet than at the inlet. Fan-blades are arranged at the inlet end of the drum 15, and a screen 13 separates the chambers 7, 14. The outer edges of the blades 20 at the inlet end are slightly bevelled and rounded on the advancing side, and this bevelled and rounded surface gradually decreases until at the outlet end it is reversed. The material as it is delivered from the chamber 14 is carried towards the centre of the machine bv the head 26 and through the outlet 27 to a chamber 28 containing a fan 29 which delivers through the outlet 31. The additional air is delivered to the fan through an opening 32 fitted with a shutter 33, Fig. 4, which is made in halves pivoted on a pin 34 and adjustable by means of thumb-screws 36 proiecting into slots 35 in the shutter. About one-eighth of the total air is driven through the pulverizer to produce a pressure about three times that of the low-pressure fan 29 at the outlet.
Patent GB-473985-A (GB)
Title: Improvements in automatic regulating apparatus for direct current dynamos working inparallel
Filed: 1936-04-24
Abstract: 473,985. Electricity supply. BOSCH AKT.-GES., R. April 24, 1936, No. 11663. Convention date, April 27, 1935. Addition to 436,429. [Class 38 (iv)] Running generators in parallel.-The equalizing arrangement described in the parent Specification by which equal or proportional output is obtained from dynamos working in parallel on a common battery, is automatically rendered inoperative when one dynamo is out of action. The system described in the parent Specification is modified by the inclusion of a switch 17 in the lead connecting the two equalizing windings 9, one for each machine. This switch is opened by the flow of current in a winding 19 connected between dynamo terminals of like polarity, so that failure of either dynamo results in flow of current through the winding.
Patent GB-284509-A (GB)
Title: Device for the production of smoke and the like
IPC: A01M1/20
Filed: 1927-05-02
Abstract: 284,509. Rademacher, E. May 2, 1927. Vaporizing by combustion.-A disinfecting or therapeutic device comprises a cylindrical wire gauze container for accommodating a fumigating candle so that it is visible from all sides. In one construction, Fig. 1, the container comprises top and bottom sheet metal rims 3, 2 connected by webs 8 with wire gauze 13 mounted thereon. A slidable cap 10 is provided and functions as an extinguisher and heat intercepter. In other forms, the cap is reversible and co-operates with the top of the container so that it also functions to conduct the smoke away. Several forms of cap are described. In another construction, Fig. 6, a slidable baffle for controlling lateral air currents comprises a double cone 22 of wire mesh. In a further construction, the baffle is funnelshaped and is provided with a reversible cap at its apex.
Patent GB-348610-A (GB)
Title: A device for synchronising alternating current generators
IPC: H02J3/42
Filed: 1929-11-05
Abstract: 348,610. Synchronizing dynamo-electric machines. AKT.-GES. BROWN, BOVERI, ET CIE, Baden, Switzerland. Nov. 5, 1929, No. 11719/31. Convention date, Nov. 9, 1928. Divided on 348,505. [Class 38 (iv).] Regulation, automatic.- A motor, acting as synchronoscope and having its two elements respectively connected to the generator to be synchronized and the A.C. network, operates a centrifugal switch by which the resistance in the field circuit of a motor adjusting the governor of the prime mover is varied, and also a reversing switch controlling the direction of rotation of the said motor. When the difference between generator and network frequencies is a maximum the liquid s operates the plunger t to effect a short-circuiting of the field resistance w.
Patent GB-737710-A (GB)
Title: Improvements in or relating to inflatable objects
Inventor: CLARKE JAMES HENRY
IPC: B64C3/30
Filed: 1953-04-28
Abstract: 737,710. Inflatable dinghies; aircraft wings and airships. ELLIOT EQUIPMENT, Ltd. July 2, 1954 [April 28, 1953], No. 11776/53. Classes 4 and 113 (2). [Also in Group XXXI] In an inflatable object, e.g. an airship or aeroplane wing or part of a dinghy, having at least two interior surface portions 2 which are displaced away from each other as a result of inflating the object, at least one of the two portions has a loop 5 through which a cord 7 or wire or the like freely passes, the cord being attached also to the other of said portions in such a way that when the object is inflated the cord tautens and restrains the relative displacement of said portions to an extent depending upon the effective length chosen for said cord. In the embodiment of Fig. 1, lengths of tape 3 placed between an outer panel 1 and an inner panel 2 are pulled through slots 4 in the latter to form the loops 5. A single length of cord is passed through the loops of each transverse row as shown.
Patent GB-1492043-A (GB)
Title: Liquid fuel injection pumping apparatus
IPC: F02M41/14
Filed: 1974-03-16
Abstract: 1492043 Fuel injection pumps CAV Ltd 11 March 1975 [16 March 1974] 11781/74  Heading F1A In fuel injection apparatus comprising a fuel injection pump and an angularly adjustable metering valve-member 30, in the supply passage from a feedpump, an electro-magnet 44 is de-energizable to allow the valve-member 30 to move axially to an inoperative position in which flow therethrough is prevented irrespective of its angular position. The electromagnet is shown energized whereby an armature 43a maintains a lever 41a in a position in which a port 31a in the member 30 can register with a port 32. The member 30 is angularly adjustable by linkage (not shown) movable by a lever 40 controlled by a centrifugal governor and operator tensioned spring. On de-energization a leaf-spring 45 moves the lever 41a away from the valve-member 30 thereby allowing the feedpump pressure to move the valve member to the inoperative position. The injection pump described is of the radial piston rotary distributer type, Fig. 1 (not shown).