baber/WOPTO huggingface dataset:
Patent GB-595308-A (GB)
Title: Ultra-high frequency rotating field generator
IPC: H01J25/52
Filed: 1944-09-23
Abstract: 595,308. Magnetrons and circuits therefor; aerials ; electric resonators. SAS, R. K. Sept. 23, 1944, No. 18191. [Classes 39 (i) and 40 (v) [Also in Group XXXV] An ultra-high frequency polyphase oscillation generator comprises a polyphase aerial system f<1>, f<2>, f<3>, Fig. 1, having one radiator for each phase generated, a polyphase resonant system, e<1>, e<2>, e<3>, connected or coupled to the aerial system f<1>, f<2>, f<3>, and a single magnetron valve having a number of anode segments a<1>, a<2>, a<3>, equal to or a multiple of the number of phases generated which is connected to excite the polyphase resonant system e<1>, e<2>, e<3>, the magnetron comprising in addition to the usual radial accelerating electric field and axial magnetic field means, such as discs d<1>, d<2> positioned at the ends of the anode segments a<1>, a<2>, a<3>, for setting up a small axial electric field in the discharge space. Preferably three or a multiple of three anode segments a<1>, a<2>, a<3> are used to excite a three-phase resonant system comprising, for example, three tuned circuits or resonant lines star-connected or delta-connected. The three-phase aerial system f<1>, f <1>, f<3>, consisting of three horizontal arms one quarter wavelength long arranged at angles of 120 degrees to each other, may be carried directly on extensions of the rods e', e<2>, e<3> forming the three-phase resonant system, in which case the latter system is tuned to the frequency of the generated oscillations by a movable shortcircuiting bridge b, as shown. Alternatively a tuned transformer coupling may be used, as shown in Fig. 3, the condensers h<1>, h<2>, h<3>, replacing the bridge b. The axial magnetic field in the discharge space of the magnetron may be produced by a solenoid s, Fig. 1, surrounding the valve, which may be enclosed in an iron shield ; the movable bridge b is in this case guided by studs in slots in a tube which forms a sheath for the three-phase resonant system, e<1>, e<2>, e<3>, Fig. 2, (not shown). Alternatively a three-limbed permanent or electro-magnet m, Fig. 4, may be used ; if a permanent magnet it may be formed of an alloy of aluminium, nickel, and cobalt. Each of the anode segments a<1>, a<2>, a<3>, comprises a nickel strip bent on itself to form a flange having a tubular ridge in which a terminal rod is inserted, the latter being held in place by slight indentations. The anode segments a', a<2>, a<3>, may in some cases be connected at the bottom by a ring r, Fig. 3 ; in the arrangement of Fig. 1, however, this feature is not used, the D.C. anode voltage being applied directly to the anode segments a', a<2>, a<3>, in some other manner or to the bridge b. Signals to be transmitted, e.g. of speech or visual frequency may be applied as modulating voltages either to the anode segments a<1>, a<2>, a<3>, or between the end discs d<1>, d<2> (preferably the latter) or to both sets of electrodes. The Provisional Specification states in addition that the anode segments a<1>, a<2>, a<3> may be shaped so as to form cavity resonators.
Patent GB-582876-A (GB)
Title: A method of construction of ceiling or wall surfaces
IPC: E04B2/74
Filed: 1944-09-25
Abstract: 582,876. Plastering. CARPENTER, G. Sept. 25, 1944, No. 18235. [Class 20 (iv)] In a wall or ceiling formed of boards or slabs the plaster joint is reinforced by tension members of reticulated metal. As shown in Fig. 1 the members 3, 4 project from the boards 1, 2 and overlap at the joint. Alternatively the board 2 may wholly encase the member 4 and be rebated to receive the member 3 plaster being applied at the joint only. In another form, Fig. 7, a clip 9 fits over both boards, one form of clip being shown in Fig. 6. U.S.A. Specification 1,942,392 is referred to
Patent GB-102964-A (GB)
Title: Improvements in Lawn Mowers.
Inventor: WORTHINGTON CHARLES CAMPBELL
IPC: A01D75/30
Filed: 1916-12-20
Abstract: 102,964. Worthington, C. C. Dec. 20, 1915, [Convention date]. Lawn-mowers.-A gang lawn-mower with units of the type having ground wheels driving rotary cutters has clutches provided between the cutters and their driving-wheels. In the form shown in Fig. 2, the mower units are arranged about a main frame 1 so as to cut a swath which is substantially the width of their individual swaths, the frame 1, which is provided with a seat for the operator, being supported by bearing-posts 2 upon substantially central points of the mower units. Each unit can tilt vertically about its connexion with its post 2. A fifth-wheel joint 4 is arranged in the connexion between the post 2 of the leading mower and the frame 1. Each unit comprises a pair of ground wheels 5 which drive a rotary cutter shaft 10 through a train of gearing housed in the side plates 7. The shaft 10 has rigidly secured to its centre a disk 16 provided with apertures adapted to receive one or more rods 18 mounted on a collar 19 and arranged to move through dust-proof openings in two housing- parts 15<a>, 15b, each mounted on a separate sleeve 12 on the shaft 10 and bolted together to form a chamber for the disk 16. The sleeves 12 carry the rotary cutters, and when, by pushing in the rod 18, the disk 16 is rigidly connected with the housing, the cutters are rotated as the ground wheels rotate. The clutch may be hand-operated, or it may be pushed in by a spring 20 and released when the cutters are lifted from the ground. In the latter case, the rods 18 are extended and secured to a sliding collar 24 provided with a groove engaged by the forked end of a lever 25, which is attached to the cutter-lifting chain 29 by a bridle 27. The tension of the spring 20 may be so arranged that the clutch will be operated after the cutters have been lifted a predetermined distance. In a modification, ratchet clutches are provided at each end of the cutter. To permit the clutches of the several units to be operated simultaneously by a lever 35, the link 37 which moves the operating-shaft 31 for the rear units is provided with an horizontal joint to allow for the movement of the fifth-wheel joint 4. Specification 102,963 is referred to.
Patent GB-300220-A (GB)
Title: Improvements in or relating to reels
IPC: B65H75/30
Filed: 1927-07-09
Abstract: 300,220. British United Shoe Machinery Co., Ltd., (United Shoe Machinery Corporation). July 9, 1927. Riveting; machines using continuous wire.- A wire-carrying reel for removable attachment to a machine for inserting fastenings, for example the lasting machine described in Specification 283,978, comprises a hub rotatably mounted on a shaft of the machine and formed with pockets in which lugs on a spool are held by springs. As shown, the hub 12, Fig. 2, is rotatable on a shaft 14 with a degree of friction adjustable by a washer 21, spring 18, and nut 20. The hub is formed with oppositely-disposed lugs 32, 34 formed with surfaces 48, 40, 38, 36 defining pockets 30 across which leaf springs 46 extend. The spool 10, Fig. 3, is formed of a pair of L- shaped sheet metal stampings 50 which have flanges 52 connected as by spot-welding 54 and carrying lugs 42 designed to co-operate with the pockets of the hub. In use, the spool is placed with its lugs 42 engaging the centre part of the springs 46, and is pressed rearwardly and given a partial rotation, until the lugs enter the pockets 30, where they are retained by the springs 46. The spool may be given a non-rusting coating by cadmium dipping or plating.
Patent GB-723413-A (GB)
Title: Improvements in combustion chambers for gas turbines, jet propulsion plants and the like
IPC: F23R3/10
Filed: 1950-07-21
Abstract: 723,413. Generating combustion products under pressure. LYSHOLM, A. July 21, 1950, [July 22, 1949; July 22, 1949.] No. 18310/50. Class 51 (1). A combustion chamber for gas turbines or jet propulsion units has an end wall and means in the end wall for supplying fuel towards the outlet end of the combustion chamber. An opening is provided in the end wall for supplying primary air to the chamber, the opening having a rounded edge, and a deflector is located inside the end wall near the opening, having its outer edge spaced from the edge of the opening, primary air entering the chamber following the end wall and thereby causing a toroidal flow. In the cylindrical type combustion chamber in Fig. 1 a conical deflector plate 12 having radial fins 13 is mounted inside the flame tube 4 in front of the central opening 6 which has a rounded edge 23 in the conical end wall 5 so as to form an annular slot 15 through which primary air enters in a radial direction. Some air enters the flame tube in an axial direction through the apertures 16 in the end wall 5 so as to cool the wall 4 of the flame tube. The fuel from the injector 11 enters the sheltered zone downstream of the baffle 12 and combustion air swirls into this zone as indicated by the arrows 18. A similar arrangement may be provided in an. annular type combustion chamber. In the annular type combustion chamber in Fig. 5, air deflector plates 122, as shown in Fig. 7, are provided in the end wall 107 of the flame tube to cause the combustion air to flow radially inwardly and outwardly over the end wall. The deflector plates are fitted in openings 121, which have rounded edges 136 and which are disposed in the end wall between the nozzles 119 into which the fuel nozzles 116 inject. Some air for atomizing the fuel enters the nozzles 119 through openings 118 and cooling air enters the combustion chamber through the slots 120. Secondary air is supplied through the openings 127, 128 and dilution air through rectangular openings with guide vanes 133.
Patent GB-981795-A (GB)
Title: Improvements in the refining of aluminium alloys
IPC: C22B21/06
Filed: 1961-05-19
Abstract: Aluminium alloys other than aluminium-magnesium alloys are degassed by treatment with a composition consisting of, in percentage by weight: .Lithium chloride.2-10 .Sodium fluoride.5-40 .Fluorite.5-20 .Cryolite.2-20 .Sodium chloride.5-40 .Potassium chloride.5-30 Treatment is effected by stirring into the molten alloy 0.2-1% of its weight of the refining agent, and then removing the slag produced. It may be carried out at temperatures below 680  DEG C.  A particular alloy exemplified contains in percentage by weight: .Cu.1.8- 1.2 .Si.10.5-12 .Mg.0.3 .Zn.1 .Fe.1.3 .Mn.0.5 .Ni.0.5 .Sn.0.35 .Al.balance
Patent GB-253375-A (GB)
Title: Improvements in or relating to "engaged" indicators
IPC: A47C1/13
Filed: 1925-07-20
Abstract: 253,375. Hodgson, H., and Archer, J. July 20, 1925. " Engaged " and like indicators.-A plate 1 is secured to a chair back 2 and a plate 3 slides vertically to display an " engaged " notice, pins 5 on one plate engaging slots 4 on the other. A horizontal extension 8 may be provided at the top of the centre slot in one plate the centre pin 5, itself passing through a horizontal slot in the other plate, so that the " engaged " plate may be secured in its upper position by sliding the pin horizontally and locking it by turning a. nut 6. Spring fingers 9 may be provided between the slates to prevent rattling and may assist in holding the " engaged " plate raised. An extension 10 is provided to facilitate raising the plate 3.
Patent GB-1086209-A (GB)
Title: Improvements in or relating to devices for securing together two elements' for example, stringers for belt conveyor frames
IPC: B65G39/10
Filed: 1966-04-28
Abstract: 1,086,209. Conveyer frames. GUTEHOFFNUNGSHUTTE STERKRADE A.G. April 28, 1966 [May 3, 1965], No. 18603/66. Heading B8A. [Also in Division E2] Stringer sections 1, 1<SP>1</SP> of a belt conveyer frame are releasably connected by bolts 12, 12<SP>1</SP> mounted in flanges 9, 9<SP>1</SP>. A flange is secured to each end of a stringer section and has an aperture enlarged at one end 10<SP>1</SP> to receive the bolt head of the adjacent flange. By rotating the sections 1, I<SP>1</SP> about their common longitudinal axis relatively to each other, the bolts move into a constricted part of the aperture portions 10<SP>1</SP> so that each head interlocks with the adjacent flange 9<SP>1</SP> when the stringer sections are aligned. The upper portion of the apertures (10) receive chains (13) for suspending the conveyer, Figs. 1, 2 (not shown). Pockets (7) on the inside of each stringer section receive brackets (2) for belt-supporting pulleys (3). The frame may be supported by posts (14), Figs. 3, 4, 7, 9 (not shown), each post having two flanges (16) and two bolts, so that a post can be incorporated between two stringer sections. The upper portion of the aperture 19 may be dispensed with, Fig. 10 (not shown), or a separate aperture (17), Fig. 11 (not shown), for the chain (13) may be provided. In Fig. 12 (not shown), the flange has an open-ended aperture (19) to enable the bolt head to be inserted transversely to the longitudinal axis of the stringer section.
Patent GB-624841-A (GB)
Title: Improvements relating to rotary pipe connections
IPC: F16J15/34
Filed: 1947-07-14
Abstract: 624,841. Stuffing box substitutes. CASTINGS, Ltd., and BULLOWS, W. D. July 14, 1947, No. 18627. [Class 122(v)] [Also in Group XXVIII] A rotary pipe connection comprises an overlapping and contacting assembly of flexible annular plates 8 and 9 having its parts respectively adapted for attachment to the parts to be connected and also adapted to allow relative radial movement for accommodating expansion by heat and lack of alignment between their axes. The plates 8 which are larger than the plates 9, have washers 10 inserted between the outer peripheries, whereas plates 9 have washers 11 between the inner peripheries. Plates 8 are bolted to a rotary furnace 2 and the plates 9 to a ring 5 welded on a stationary pipe 6. A number of retaining fingers 19, secured to the plates 8 engage grooves 18 in a reinforcing ring 15 bolted to plates 9 and the ring 15.
Patent GB-396212-A (GB)
Title: Improvements in and relating to apparatus for folding wrappers around tablets
IPC: B65B11/44
Filed: 1932-07-01
Abstract: 396,212. Wrapping-machines. FORGROVE MACHINERY CO., Ltd. and GROVER, F., Oakhurst Avenue, Dewsbury Road, Leeds. July 1, 1932, No. 18631. [Class 94 (i).] Relates to wrapping-machines of the kind in which the wrapper is first folded into a trough-like formation about a tablet, then into a tubular formation, the open ends of which are twisted to complete the wrapping. Paper w is fed from a reel and is drawn into position by jaws c, c<1> on a slide c<2> operated by links c<3>, c<4>, the connecting pin c<11> of which can be adjustably engaged in one of a number of holes c<10> in the slide, so that the travel may be varied if necessary. A wrapper length d is severed by knives a while the web is held by grippers b. The tablets i to be wrapped are accommodated in openings f<l> in an intermittently rotating disc f, Figs. 2 and 6, a thin annulus f<2> supporting them until they are raised by a plunger h having bifurcations h<1>, h<2> embracing the annulus. The plunger first raises the tablet between lower guides e as shown in Fig. 2, and then carries it, with the severed wrapper d through upper guides e<1> into proximity with a pair of jaws k, k<1>. During this movement, extensions h<3>, h<4> on the plunger h support the edges d<3>, d<4>, Figs. 6 and 8, of the wrapper and ensure that it is properly folded into the trough formation shown. A plunger bears on the upper surface of the wrapper to maintain contact during the ascent. The grippers k, k<1>, which form part of a series mounted on a hub k<3>, now approach and grip the wrapper against the sides i<1>, i<2> of the tablet. A finger l is moved to the left, Fig. 2, to fold up the depending edge d<2> of the wrapper, and an intermittent clockwise rotation of the hub causes the other depending edge d<1> to be folded up by a stationary folder m. The wrapper is now in tubular formation and the ends are presented to twisting mechanism such as is described in Specification 215,902, [Class 94 (i), Packing &c.], by means of which the wrapping is completed as shown in Fig. 11. After two more intermittent rotations the jaws are opened and the wrapped tablet is ejected by an arm o. The guides e, e<1> are adjustably mounted so that the machine may deal with tablets of different sizes.
Patent GB-481355-A (GB)
Title: Improvements in the manufacture and production of sulphur
IPC: C01B17/04
Filed: 1936-07-06
Abstract: <PICT:0481355/III/1> The combustion of hydrogen sulphide or gases containing it in a free flame with limited amounts of oxygen while maintaining within the flame or in its neighbourhood a temperature sufficiently high to avoid extinction of the flame is carried out under a boiler, corrosion of the metal parts by the sulphur being prevented by maintaining the temperature below 350 DEG  C., or by coating the metal parts with zinc.  The steam is generated at a temperature above 119 DEG  C., e.g. at 2-4 atmospheres pressure, so that the sulphur is condensed in a mobile form.  Extinction of the flame is avoided by arranging heated bodies in its neighbourhood or by carrying out the combustion in an insulated chamber which is preheated, and a temperature of 200-700 DEG  C. is maintained, depending on the purity of the hydrogen sulphide burnt.  If desired, the combustion may be carried out in two stages.  The gases leaving the boiler are cooled, preferably to 120-200 DEG  C. and, if desired after separation of the sulphur, are catalytically treated to convert any hydrogen sulphide remaining, e.g. by the Claus process, which may be carried out in two stages.  Sulphur dioxide, sulphur trioxide or sulphuric acid may be added to the gases undergoing combustion.  In the arrangement shown, the hot gases produced in the combustion chamber 1 are cooled by a boiler 2 having boiler tubes 6.  The steam produced is passed through a superheater 7, and the feed-water is passed through preheaters 8 and 9 where the temperature is raised above 120 DEG  C.
Patent GB-821086-A (GB)
Title: Improvements in or relating to multi-decked cage winding plants
IPC: B66B1/14
Filed: 1957-06-13
Abstract: 821,086. Decking apparatus for multi-deck pit cages. SIEMENS & HALSKE A.G. June 13, 1957 [June 13, 1956], No. 18738/57. Class 78 (4). The decking gear for a multi-deck pit-cage is controlled by two switches MS1, MS2 at different heights in the shaft so that one switch MS1 is operated whichever deck is at banking level while the other switch MS2 is operated only when a deck other than the top deck is at banking level, and its contacts s2 are bridged by contacts a which are closed when the brake of the winding engine is on: this prevents the engineman from releasing the decking gear and then running the cage away before the last deck has been banked. In the construction illustrated the switches control a relay R the contacts r of which are in series with manually-operated contacts controlling an electric or pneumatic ram which releases the catch holding the tubs, which can thus be released, when the top cage is at a banking level, only if the winding brake has first been applied. The switches MS1, MS2 comprise polarized magnetic switches operated by magnets M1, M2 mounted on the cage and of such polarity that the magnet M1 closes the switches MS and MS2 as it passes upwardly and opens them as it passes downwardly, while the magnet M2, which prevents release of the decking gear after overwinding, releases the switch MS1 as it passes it upwardly and closes it as it passes downwardly.
Patent GB-672265-A (GB)
Title: Improvements in friction clutches
IPC: F16D13/70
Filed: 1949-07-16
Abstract: 672,265. Friction clutches. ANDERTON, H. July 10, 1950 [July 16, 1949], No. 18790/49. Class 80 (ii). A disc-clutch is engaged by toggle-links l, pivoted at m to a bush d adjustably screwed on the clutch-boss c and carrying rollers n, which press axially on a presser-plate h when thrust radially inwards by further rollers r carried by an axially slidable control-sleeve p. After retraction, the sleeve p can be turned so that chamfers in its end between the rollers r permit the links' l to be pivoted outwards to allow the presser-plate h to be axially retracted sufficiently to allow the clutch disc k, which is segmental, to be removed. Centrifugal force on the rollers n assists engaging pressure and also prevents inadvertent engagement when disengaged.
Patent GB-146880-A (GB)
Title: Improvements in telephone substation circuits
IPC: H04M1/02
Filed: 1920-07-06
Abstract: 146,880. Western Electric Co., (Assignees of Campbell, G. A.). Sept. 9, 1916, [Convention date]. Telephone systems.-A substation circuit comprising a transmitter T, receiver R, transformer 3, 4 and auxiliary resistance X, arranged as shown, is so designed that (1) the impedance of the transmitter T is equal to the impedance of the rest of the circuit, including the line L, as seen from the transmitter, whereby the telephonic energy delivered by the transmitter is a maximum, (2) the impedance of the line L is equal to the impedance of the substation network, as seen from the line, whereby the proportion of energy delivered by the line to the substation is a maximum, (3) the transmitter T and receiver R are conjugate, i.e. the transmitter is without effect on the neighbouring receiver, (4) the line L is conjugate with the auxiliary resistance X, so that when the substation is receiving energy from the line no energy is wasted in the resistance. Calculations are given for proportioning the transformer ratio and the several resistances of the substation network and of the line so as to secure these results, and it is shown how it is possible, at a small sacrifice of efficiency, to discriminate against noises originating in the line. The transformer coils are of high impedance but low resistance, and are closely coupled.
Patent GB-398978-A (GB)
Title: Improvements in or relating to bathing tents and the like
IPC: E04H15/00
Filed: 1932-07-04
Abstract: 398,978. Tents. ABRAHAM, A., Comus, New Romney, and CHEEK, R. A. M., Tamarisk, East Rype, Lydd, both in Kent. July 4, 1932, No. 18843. [Class 20 (i).] A sunbathing tent which can be inclined to its base so as to receive the requisite amount of sunlight, is formed of four corner posts 1 connected by pivoted upper and lower transverse rods 4, and auxiliary transverse rods 6 connected by levers 8 pivoted to the lower and auxiliary transverse rods. Stay cords 2 are used at the corners, and a curtain rail 12 is supplied to carry a curtain 13 to close the entrance, the same curtain being used when necessary to serve as an adjustable roof. The tent is inclined by moving the lever 8 about the base transverse rail.
Patent GB-702951-A (GB)
Title: Improved variable speed centrifugal governor for internal combustion engines
Inventor: JENNINGS JARVIS SLADE
IPC: F02D1/00
Filed: 1951-08-13
Abstract: 702,951. Centrifugal governors. HOOF PRODUCTS CO. Aug. 13, 1951, No. 18974/51. Class 57 A centrifugal governor comprises a pair of fly-weights 27 pivoted on a member 25 revolving with a drive shaft 21 and having arms 37 in engagement with a sleeve 33 slidable on the shaft, the sleeve being connected through a thrust bearing 40 with a yoke 45 which forms one abutment for at least one pair of inclined tension springs 78; the springs of each pair being disposed on opposite sides of the shaft and the other ends of each pair of springs being connected to a semi-circular lever 76, each lever 76 being, pivotally mounted at its centre on a lever 72 secured to a shaft 61. The latter carries on the outside of the governor casing 15 a further lever co-operating with a speed adjusting screw. The yoke 45 has an elongated central slot 46 through which projects, into engagement with the thrust : bearing 40, a pair of levers 49 secured to a shaft 47 which carries a lever 53 connected to the speed control device of the machine to be controlled, e.g; the throttle valve of an internal combustion engine, and also a second lever connected to an auxiliary tension spring. When the governor is used with an internal combustion engine the strength of the auxiliary spring is just sufficient to over-balance the forces on the throttle valve due to the air velocity in the engine manifold. In another embodiment only one pair of springs is used and disposed one spring on each side of the shaft.