baber/WOPTO huggingface dataset:
Patent GB-393850-A (GB)
Title: Improvements in or relating to aerating machines
IPC: B03D1/16
Filed: 1932-11-04
Abstract: 393,850. Concentrating ores. FAIR. WEATHER, H. G. C., 65, Chancery Lane, London.-(Fagergren, W. ; c/o Lundin & May Foundry Co., Salt Lake City, Utah, U.S.A.) Nov. 4, 1932, No. 31171. [Class 82 (ii).] An aerating-machine for use in the flotation concentration of ores comprises a chamber containing an aerating device which consists of a vertical cage rotatable about a substantially vertical axis and formed of staves preferably having a circular, pentagonal, or similar cross section defining spaces between them which converge from the inside to a constricted point and then diverge, and a stationary outside cage or grille at least partially surrounding the rotary cage. An aeration chamber with a false bottom 32, Fig. 2, contains a stationary cylindrical cage formed of staves 30, 31 preferably hollow and of circular cross section secured'at their lower ends to the false bottom 32 and with their upper ends fastened into a rim 34 which supports a conical hood 35. Inside the stationary cage rotates an impeller 20 formed with upper and lower propellershaped spiders 78, 80 provided with rims in which are mounted staves 25 of circular cross section. The feed, e.g. the tailings from a previous machine, passes down the feed inlet 38 into the channel 36 between the false bottom 32 and the true bottom 37, and rises into the chamber through an aperture 54 situated in the false bottom directly below the impeller. The propeller-shaped spider 80 draws the pulp up into the impeller and the propeller-shaped spider 78 draws air down through the hood 35, the pulp and air being mixed in the impeller and forced outward between the staves 25 and then Between the staves 30, 31 of the stationary cage. Froth formed passes over side lips into froth launders and the tailings pass through an aperture 50 either to the next machine or to discharge. Some of the hollow staves 30 of the stationary cage extend upward through the rim 34 and are formed so that some of the pulp passes down the staves into the space 36 and rises again into the impeller, the recirculation being controlled by an adjustable damper 53 having holes 56 registering with the openings at the tops of the staves. In the form shown in Fig. 4 the rotary cage is made to extend above the pulp level in the chamber, a cylindrical hood 35 is provided, and recirculation is effected by openings 88 in the bottom 32 of the chamber. The froth lips 83 and the tailings weir 85 are adjustable by handwheels 84, 86 respectively. In the form shown in Fig. 5, the rotary cage is situated near one end of the aeration chamber and the stationary cage is formed as a grille extending from wall to wall of the chamber on one side only of the rotary cage. Horizontal plates 90 are provided to direct the flow of the pulp in horizontal streams. Recirculation of pulp is effected and controlled by the provision of circular plates 91 which can be rotated by forked rods 93 until holes therein register with holes in the false bottom 32.
Patent GB-948824-A (GB)
Title: Filter
IPC: H03H7/01
Filed: 1960-09-09
Abstract: 948,824. Filters. NIPPON ELECTRIC CO. Ltd. Sept. 9, 1960 [Sept. 16, 1959], No. 31175/60. Drawings to Specification. Heading H3U. A band-pass filter which exhibits equal ripple performance in the pass-band comprises coils or capacitors equal in number to (N-1)/2, where N is the " degree of freedom " of the filter obtained by making the characteristic function of the filter to have one or two imaginary frequency zeros. By degree of freedom is meant the number of poles of the filter (including that at infinity). According to the Specification, this cannot be greater than 2m L +m R  (m L , m R  are respectively the number of coils and resistors) so that if the number of elements is a minimum N=2m L +m R . A similar criterion applies for minimizing the number of capacitors. It is stated that in order to make N=2m L +2, a sufficient condition is that the numerator polynomial of the filter characteristic function is of even order N and the denominator polynomial is an odd function. For N = 2m L +1, the numerator polynomial is of odd degree, i.e. h(p)=(p+α)h<SP>1</SP>(p), where h<SP>1</SP>(p) is a polynomial of degree (N - 1) and α<SP>2</SP> is positive. The Specification gives a worked example of a bandpass filter realised in accordance with these principles.
Patent GB-286022-A (GB)
Title: Improvements in or relating to automatic electrical motor controlling systems
IPC: H02P1/58
Filed: 1926-12-09
Abstract: 286,022. Lithgoe, J., and Tinsley, H. Dec. 9, 1926. Protective systems.-For the protection of a number of electric motors working coal-conveyors or cutters in a mine, a master switch L in a lowtension earthed circuit controls solenoids K<1>, K<2>, &c. operating the motor switches H<1>, H<2>, &c., with electrical interlocks arranged so that the motors must start successively in a given order and, in the event of a fault, the faulty motor is switched out together with the motors that come after it in the order of starting. As a modification, the system may be arranged so that a fault on any one motor occasions the switching out of all. Specification 248,805 is referred to.
Patent GB-896320-A (GB)
Title: Carrier carton
IPC: B65D5/49
Filed: 1960-09-12
Abstract: 896,320. Carrier cartons. UNIPAK CARTONS Ltd. Sept. 12, 1960 [Dee. 22, 1959], No. 31411/60. Class 18. A carton has a wall structure with an interior assembly located within the carton, the assembly comprising a slidable handle member and load bearing means fixed to the wall structure with the handle member constituting a longitudinal partition dividing the interior into a plurality of compartments and embracing the load bearing means. In the first embodiment, Fig. 1, the carton 10 is formed from a blank comprising side walls 13, 14, end walls 16, 17, top side flaps 21, 22 and top end flaps 18, 19 with the flaps forming a top closure 23. The bottom is formed similarly by side and end flaps 31, 32 and 28, 29 respectively. In the erected position side flaps 21, 22 leave a longitudinal slot 24 for the handle 52. The handle comprises panel portions 53, 54 folded at 55 and embraces a load bar 42. The load bar is secured to the end walls by tabs 43, 44 and handle sections 59, 60 are secured together along edge 69 by gluing or stapling. The load is shared by the lower edge 55 engaging the load bar 42 and by the handle shoulders 61, 62 bearing against the undersurface of top closure 23. Prior to gluing of the top and bottom flaps to close the carton the bottom flaps are temporarily held closed during filling of the carton by a tongue 38, Fig. 7, on one flap engaging the edge of the other flap. In a second embodiment, Fig. 8, load bar 70 which has a different tab formation at the ends is provided with securing tabs 71, 72 fixed to the walls and in addition has overlapping reinforcing tabs 73, 74 and spacer tabs 76, 77. The spacer tabs guide the shorter handle body 51a, the vertical movement of which is secured by securing together the handle sections 59a, 60a. In a third embodiment, Fig. 10, the load bar 70b is formed with a tongue 83 extending downwardly through a slot 84 in the handle. In a fourth embodiment, Fig. 14, the load bearing means consists of a pair of bar members 102, 103. These members may be integral with or separate from the carton blank. In a fifth embodiment the carton has a pair of integral bar members 150 shown in Fig. 21. The load is taken by upper tongues 151 and the vertical movement of the handle 162, provided with slots 173, is limited by the lower tongues 152.
Patent GB-1483461-A (GB)
Title: Smoking mixtures
IPC: A24B15/16
Filed: 1974-07-16
Abstract: 1483461 Smoking material IMPERIAL CHEMICAL INDUSTRIES Ltd 26 June 1975 [16 July 1974] 31425/74 Heading, A2C A smoking material comprises a particulate fuel, binder and an inorganic filler, the filler having a surface area of 0.05 to 0.6 square metres per gram when in dry powder form. The filler is preferably calcium and/or magnesium carbonate. The fuel may be tobacco. cellulose, thermally degraded cellulose, or a carbohydrate of the type disclosed in U.K. Specification 1298354. The binder may be a cellulose ether, starch, pectin, mucilage or natural gum.
Patent GB-1401613-A (GB)
Title: Flow-control devices
IPC: A61M16/20
Filed: 1971-07-05
Abstract: 1401613 Valves SIEBE GORMAN & CO Ltd 5 July 1972 [5 July 1971] 31500/71 Heading F2V [Also in Division A5] A valve for controlling the supply of respirable gas to a face mask is operated by a diaphragm 6 responsive to the difference between ambient pressure and the pressure on the downstream side of the valve and is closed against the action of resilient means 28 when the pressure difference exceeds a predetermined amount. Gas is supplied to the valve through a banjo fitting 23 and passages 16, 17, 18 terminating in a seat 19 engaged by a rubber portion 21 on the valve member 20 which is of generally cylindrical shape with three plane side faces to form passageways. A ball 22 secured to the valve member by caulking with a ring punch engages a spring-loaded lever 37 operated by the diaphragm through a screw 39 which may be adjusted to alter the position of the arm at which the valve closes. A second screw 31 limits rightward movement of the diaphragm. Two centrally anchored rubber flaps (43, 44, Fig. 2) arranged in series mounted in a plastic sheath closed by a perforated metal dome (50) allow exhaled gas to flow to atmosphere or to a CO 2  absorber for recirculation to the user. Only one rubber flap may be used. A knob 34 may be unscrewed to engage the head of the screw 31 when the valve is to be held shut.
Patent GB-986640-A (GB)
Title: Cigarette making machine
IPC: A24C5/18
Filed: 1961-09-01
Abstract: 986,640. Cigarette-making machines. AMERICAN MACHINE & FOUNDRY CO. Sept. 1, 1961 [Sept. 15, 1960], No. 31600/61. Heading A2C. Tobacco delivered from a belt 10 to a suction conveyer drum 28 is picked or deflected by a picker roll 32 so that it is redistributed evenly over the drum 28 and excess tobacco is removed by a trimming wheel 34 into a shoot 36. The tobacco remaining on the drum is delivered to an endless conveyer web 40 situated below the level of the roll 32 and wheel 34. The web 40 delivers the tobacco to a paper web 38 for transmission to the rod forming mechanism of the cigarette making machine. The height of the roll 32, which rotates at a faster peripheral speed than  the drum 28, above the conveyer 40 is  variable. Specification 952,077 is referred to.
Patent GB-491412-A (GB)
Title: Improvements in and relating to shaft seals
IPC: F16J15/36
Filed: 1937-11-17
Abstract: 491,412. Stuffing - box substitutes. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 17, 1937, No. 31663. Convention date, Nov. 17, 1936. [Class 122 (v)] A refrigerant compressor of the reciprocating- type has a casing 10 with a base 11 and a boss 13 containing a chamber 14 into which the power shaft 15 protrudes. A collar 20 on the shaft engages a ring 23 of polymerized chloro-2- butadiene-1, 3 mounted in a removable collar 21 carried by an imperforate, resilient metallic bellows 27 which is secured to a sealing-ring 24 closely fitting around the shaft and provided with a sealing-face 25 engaging a polished sealing-surface 37 on a cover plate 30. A spacing- ring 28 is arranged between the boss and the cover plates 29, 30 bolted thereto. A helical spring is arranged between collars 38, 39 on the rings 21, 24 which rotate with the shaft. A portion of the lubricant is thrown into a recess 42, passes by a passage 43 to lubricate the bearing, and through passages 44, 45 to the chamber 14. In a modification, the cover plate is recessed and houses a removable bearing-ring with a polished, relatively hard, sealing-surface and an adjacent, resilient, annular member preferably of polymerized chloro-2-butadiene-1, 3. In this construction, the seating-ring is mounted on a flanged supporting-ring engaged by the spring. The sealing-face 25 is constructed and positioned with respect to the bellows in such manner that its mean diameter is equal to the diameter of the annular centre of pressure of the bellows which is balanced against forces produced by atmospheric pressure and crank-case pressure.
Patent GB-1354056-A (GB)
Title: Temperature control apparatus for heating roller
IPC: G05D23/20
Filed: 1972-07-06
Abstract: 1354056 Crystal oscillators TEIJIN Ltd 6 July 1972 [6 Oct 1971] 31676/72 Heading H3T [Also in Divisions G1 and G3] A transistor oscillator circuit which provides an output signal F0 related to the temperature of a body (see Division G1) comprises a circuit 37 providing a signal F1 dependent on a measuring quartz crystal element X tal 1, a second circuit 38 providing a reference frequency F2 dependent on the elements X tal 2, CV and Li, and a mixer circuit 39 from which the difference frequency F0 = F2-F1 is obtained. The frequency F2 may be varied by adjustment of CV.
Patent GB-282970-A (GB)
Title: Improved construction of polishing or grinding apparatus
IPC: B24B23/02
Filed: 1926-12-14
Abstract: 282,970. Richman, P. R. Dec. 14, 1926. Disc apparatus; wheels and other tools.-Polishing or grinding apparatus for hand manipulation comprises a casing carrying gear wheels driven by a flexible shaft or electric motor and having shafts projecting through the bottom of the casing and grinding blocks or polishing pads fixed on the projecting ends of the shafts and interengaging one with another so that portions of the surface acted on by one block &c. will be acted upon by another block to remove any circular markings. In one construction, Fig. 2, a shallow casing A is provided with handles B and carries gear wheels I, J. K on shafts F, G, H projecting through a cover plate L at the bottom of the casing. Plates Q, R, S are attached to the ends of the shafts and grinding blocks or polishing pads W, X, Y are secured to the plates, the edges of the blocks or pads being of involute, dumb bell &c. shape so as to interengage. The plates Q, R, S are formed with transverse flanges Z, a, b engaging in recesses in the grinding blocks &c., which are secured to the plates by screws or bolts. The blocks &c. are driven by a flexible shaft connected to the centre shaft G and the apparatus is manipulated over the surface by the handles B. In the modification shown in Fig. 3 with two grinding blocks &c. an electric motor j is mounted on the casing A which has a handle k and electric supply lead l, the driving gears I, K meshing with a pinion n on the motor shaft m.
Patent GB-160274-A (GB)
Title: Improvements in or relating to work-supporting jack mechanisms for machines for use in connection with the manufacture of boots or shoes
IPC: A43D23/02
Filed: 1919-12-17
Abstract: 160,274. British United Shoe Machinery Co., Ltd., (United Shoe Machinery Corporation). Dec. 17, 1919. Work-supports.-A work-supporting jack mechanism automatically locates the work in predetermined lengthwise position on the jack and clamps the last thereon as a result of the operator positioning the last on the jack. The jack comprises a spindle 3 having a toe-rest 2 and a heel-post 1 pivoted to a member 14 pivoted at 16 to the spindle 3. The last, when positioned on the heel - post 1, depresses a plunger 100 carrying a dog 94 which flexes a toggle 52, 54, allowing a spring 17 to pull the member 14 about its pivot under the control of a dash-pot 108. When the toe of the shoe reaches a predetermined position, it actuates a lever 48 which, by means of a pushrod 46 and latch 41, releases a pawl 38 which engages a ratchet-wheel 36 on the shaft of a pinion 30 gearing with a rack-bar 28 pivoted to the arm 14, and thus locks the member 14. Meanwhile the engagement of the toe-rest with the toe of the last has turned the last pin 1 about its pivot 13 and by gear segments 24 has also turned a lever 20 about its pivot 22 and moved a pin 18 carrying one end of the spring 17 along its slots 26. The jack is carried by a support mounted for movement in the manner described in Specification 114,842, the jack spindle 3 and a contained shaft 72 being mounted on gimbal rings for allowing tipping in any direction. During operation on a shoe, the jack is rotated through half a revolution anti-clockwise. This rotation straightens the toggles 52, 54, a gear segment 68, pivoted on an axis 58, travelling round a bevel-pinion on the end of the shaft 72, a lever 56 pivoted to the free end of the toggles and also pivoted on the axis 58 being connected to the gear segment lever 62 by a spring 66. On the reverse rotation of the jack, the quadrant 68 is oscillated in the reverse direction and, by the now straightened toggle, moves the member 14 outwardly about its pivot and frees the last. A chain 88 connects the gear segment 68 with an extension of the toggle 62 and causes flexing of the toggle if the gear segment should move too far. The rack-bar 28 has a projection at its outer end which resets the pawl 38.
Patent GB-1397386-A (GB)
Title: High frequency welding and cutting tool
IPC: B66B23/24
Filed: 1973-07-04
Abstract: 1397386 Seaming non-metallic sheet-material RADYNE Ltd 7 June 1974 [4 July 1973] 31824/73 Heading B5K A combined high frequency welding and cutting tool comprises a fixed high frequency welding electrode 1, a movable cutting knife 6 at least partially surrounding the electrode 1, means for driving the knife 6 from a retracted position in which the cutting edge 7 of the knife lies behind the work-engaging surface of the electrode to an extended position in which the cutting edge lies proud of this surface, and means for maintaning the knife 6 in its extended position with its cutting edge against a workpiece when the tool and workpiece are compressed between the platens of a welding press. As shown, the electrode 1 is rigidly mounted on a base-plate 2 by spacers 3 which pass through openings 4 in a plate 5 carrying the peripheral knife 6. In use, after a weld has been completed, a pair of double-acting diaphragm cylinders 11 urge the plate 5 upwards to assist the insertion of a pair of wedges 8a, 8b towards each other by hydraulic or pneumatic cylinders 10a, 10b. The force transmitted by the wedges 8a, 8b drives the knife 7 above the welding surface of the electrode 1. When the wedges have been fully inserted, pressure is applied to the welding press so that cutting is effected. The full insertion of the wedges is indicated when they strike air limit switches S1 S2, respectively. In modifications (not shown), (a) more than two wedges are connected together to form a lattice driven as a whole by one or more pneumatic or hydraulic cylinders and (b) more than two cylinders 11 are provided.
Patent GB-742481-A (GB)
Title: An improved linkage device for coupling a trailing implement to a tractor
IPC: A01B59/042
Filed: 1952-12-16
Abstract: 742,481. Agricultural implements. WARBURTON, J. R. Dec. 14, 1953 [Dec. 16, 1952], No. 31878/52. Class 6 (1). A linkage device for connecting an implement to a tractor comprises two links, the near-side link 24 being provided with a slot 24c in which slides a ball-joint 24b mounted on a cross-bar on the implement, the arrangement being that the ball joint moves forwardly along the slot if the tail of the implement swings to the near side and thereby concentrates the tractor pull on the off-side arm to counteract the swing. As shown applied to a disc plough, the plough is provided with a ploughshare 22 and landside 23 secured on a pillar 20 adjustably mounted on a frame 17 attached to an arm 4 which carries the rear disc 1. Bracket arms 4, 5, 6 which carry the discs 1, 2, 3 are secured to packing blocks 8 fixed to a frame 7. An adjustable depth wheel 10 is mounted on the frame.
Patent GB-154805-A (GB)
Title: Improved means for clamping a vice, tool holder or the like in position
IPC: B23Q1/28
Filed: 1919-12-19
Abstract: 154,805. Burgess, W. B., Burgess, C. E., Eldridge, J. E., and Ashbee, C. N. Dec. 19, 1919. Turning.-Tool-holders are fixed on a circular plate having a bevelled edge by which it is adjustably secured at two or more points on a supporting base by a single clamping-device engaging the circumference of the circular plate. A circular plate 2, to which the tool-holder is fixed by bolts 3, is adjustably fixed on the base 4 having undercut lugs 5 against which the bevelled edge of the plate is pressed by a clamping-block 6 operated by a bolt 7 passing through a hole in a lug 8 on the base 4, and engaging a nut 9 in a recess. The base 4 may be fixed on a slide-rest by means of the lugs 10.
Patent GB-671311-A (GB)
Title: Improvements in and relating to the cooling of electrical apparatus
IPC: H01F27/08
Filed: 1949-12-13
Abstract: 671,311. Transformers and inductances. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 13, 1949 [Dec. 24, 1948], No. 31988/49. Classes 35 and 38 (ii). A cooling device for electrical apparatus such as a transformer or a dynamoelectric machine, comprising a tank or casing, has heat-conducting plates which traverse the walls of the tank or casing and project on the outside thereof where they are cooled by any suitable means. The heat-conducting plates are in two parts 5, 6 so as to facilitate the assembly of the transformer or machine in the tank or casing. The parts 5 are inserted between the coils 2 of the transformer winding and are in calorific contact at 7 with the parts 6, these latter parts passing through the walls of the tank 3 and projecting on the outside thereof where they are cooled by the surrounding atmosphere or by any suitable means of forced cooling. If desired, the parts 5 may embrace the peripheral surface of the coils 2 instead of being inserted therebetween. The tank is preferably made of an insulating material, the parts 6 being cast integral therewith during the moulding of the tank. The filling 4 in the tank may be either liquid, solid, paste or gas, as desired. In another embodiment, the tank is constructed in sections, each section being placed between two parts 6, the assembly then being secured by means of tie-bolts passing along the walls of the tank. In a modification, a transformer for use in atmospheres such as are encountered in coal mines and the like has the tank made of a metallic material which necessitates the separation of the parts 5 from the parts 6 by means of an electrically-insulating but good heat conducting material, e.g. compressed magnesium or a sand and kaolin agglomeration.
Patent GB-964020-A (GB)
Title: Improvements in or relating to conduits
Inventor: KENYON ALBERT RAYMOND
IPC: H01B13/00
Filed: 1961-09-07
Abstract: <PICT:0964020/C1/1> In the production of a glass conduit having an electrode embedded in its inner surface, the electrode 1, 2 is positioned on a former 3 by means of a spacing material 5, 6 of glass, the whole assembly is encased with a glass compatible with the spacing material, the assembly heated to a temperature at which the encasing material and the spacing material fuse and the former 3 is subsequently extracted. Glass fibres 5, 6 are wound on the former between the wire electrodes 1, 2 in the form of a multi-start helix and a tube of glass drawn down, as it softens under heat, on to the assembly. The electrodes are of platinum and the former may be of copper which is extracted by stretching and withdrawing or removed as by nitric acid.
Patent GB-820916-A (GB)
Title: Chime signal
IPC: G10K1/066
Filed: 1957-10-15
Abstract: 820,916. Plate vibrators. NU TONE Inc. Oct. 15, 1957 [Oct. 16, 1956], No. 32186/57. Class 13. A chime signal for use as a door-bell comprises four tone-bars 1, 2, 3, 4 associated with four corresponding resonance chambers 5, 6, 7, 8 formed by dividing two parallel tubes 13, 14; each tube carries a double-acting solenoid - operated striker 9 or 10 which extends through one of the resonance chambers. The circuit may be arranged so that operation of a bell-push at one door causes actuation of one striker, whereas operation of a bell-push at another door causes actuation of the other striker, or of both strikers simultaneously, giving signals characteristic of the different doors. A decorative housing may be detachably secured to the back plate 11.