baber/WOPTO huggingface dataset:
Patent GB-643474-A (GB)
Title: Improvements in or relating to damping devices for aircraft rotors
IPC: B64C27/51
Filed: 1947-07-08
Abstract: 643,474. Helicopter rotors. FIRESTONE TIRE & RUBBER CO. June 8, 1947, No. 17987. Convention date, Aug. 16, 1946. [Class 4] [Also in Group XXXII] In an aircraft rotor hub, Fig. 1, each rotor blade 5 is connected to a central axis structure 8 through a sleeve structure 6, fork 7 and the forked end 10 of an arm 9 carried by the structure 8. Each fork 10 carries a vertical pivot 11, which engages the fork 7 through a horizontal pivot to permit flapping motions of the blades. Arms 12, 12a are rigidly secured to each pivot 11 and a hydraulic damper 15 (see Group XXXII) is connected between the end of an arm 12 of one blade and the arm 12a of an adjacent blade to damp vibrations set up by inequalities in the angular spacing of the blades during starting and stopping of the rotor or during flight. The pitch of the blades 5 is controlled by a swash-plate 14 which is connected through arms 6a, 14a and a pushrod 13, to each blade sleeve 6. In another arrangement, Fig. 4, in which a hydraulic damper 45 (see Group XXXII) is pivotally connected between each blade 55 and a hub member 46, each blade 55 is connected through a vertical drag pivot 54 on a terminal fitting 52 of a fork 49, which latter is attached to the hub member 46 by flapping pivots 50, 51. The fitting 52 is attached to the fork 49, for rotational movement about an axis coincident with the axis of the blade 55 to permit changes in blade pitch, under the control of a hydraulic cylinder 56.
Patent GB-203111-A (GB)
Title: Improvements relating to the treatment of smoke and fumes
IPC: B01D45/08
Filed: 1922-06-30
Abstract: 203,111. Tooth, L. F. June 30, 1922. Dust collectors.-Solid matters are separated from smoke and fumes in apparatus comprising an abruptly bent. flue having two limbs inclined downwardly from the bend, the smoke passing up one flue and down the other into a box or chamber containing a baffle against which it is directed. Fig. 1 shows an arrangement in which the flue a of a single furnace or the main flue of a set of furnaces leads the gas through tubular limbs b<2>, b<3> set at an acute angle, into a box c in which solid matter is deposited and from which it is removed through the sloping valved bottom, the purified gases passing through an outlet e to a main flue f or to the chimney. The box is furnished with a baffle d parallel to the sides and to the flue b<2>. Fig. 2 shows a modification, in which lateral space is saved by inclining the two limbs b<2>, b<3> on the same side of the vertical, the limb b<2> being set on the chimney shaft g, which may be cut down. In a further modification, the limb b<2> is formed with a hood which is set over the usual stack and valve of a gas-producer and is contracted at its middle, forming a kind of Venturi tube. Several sets of tubes and boxes may be disposed in series, the upcast limb of each set leading from one box to the next. Cooling- tubes parallel to the baffle may assist the deposition of dust. Fig. 7 shows an arrangement in which two chimney shafts o<1>, o<2> leading from furnace flues a<1>, a<2> are cut off by partitions p<1>. p<2>, sharply bent flues b connecting the lower part of each flue through a baffle box to the upper part of the other.
Patent GB-1002479-A (GB)
Title: Improvements in or relating to a continuously variable ratio transmission
Inventor: PERRY FORBES GEORGE DE BRIE
IPC: F16H15/38
Filed: 1963-05-07
Abstract: 1,002,479. Variable-speed friction gears. NATIONAL RESEARCH DEVELOPMENT CORPORATION. May 1, 1964 [May 7, 1963], No. 18089/63. Heading F2D. In a variable - speed friction gear having driving and driven toric discs engaged by processional rollers 1 ... 3 journalled -on carriers 4 . . . 6 which are moved axially to initiate ratio shift, the rollers are connected to a common radially floating torque reaction spider 22 which moves bodily without relation to equalize the load on the individual rollers and is rotated to initiate ratio shift. In Fig. 1 the rollers 1 ... 3 rotate on spigots 16 of the carriers 4 ...6 which for ratio shift pivot at 24, 25 in a fixed spider 14 about axes along which the carriers 4 ... 6 move bodily to initiate precessional tilting of the rollers. The axis about which the rollers tilt may be perpendicular to the axis of the driving and driven discs in which case the carriers are moved back to the control position when the ratio shift is completed or the axis may be oblique to the perpendicular in which case on axial movement of the carriers, the rollers process to a new equilibrium position. The carriers 4 ... 6 are connected by a ball joint 20 to the floating spider 22 which is rotated to effect axial movement of the carriers. Unequal loads on the rollers cause a bodily movement of the spider 22 which moves the carriers 4 . . . 6 axially to alter the ratios of the individual rollers to restore uniform loading. The spider 22 may be rotated manually or by servo-means responsive to input or output speed. In Fig. 5 the rollers are journalled on a sleeve 53 which pivots for ratio shift on a pin 41 carried by a projection 39 of a carrier 40 which is axially slidable in the fixed spider 14 to initiate processional tilting of the rollers. Oil supplied to cylinders 46 damps movement of the carrier 40. An arm 48 of the floating spider 22 engages a recess 49 in a bearing cylinder 34 carried by the carrier 40 to transmit movements of the spider 22 to the carrier 40. Lubricating oil supplied through ducts 51, 52 is sprayed over the rollers. In Fig. 2 (not shown) the arrangement is similar to Fig. 5 but the bearing cylinder is carried by the floating spider and engaged by a projection on the carrier. The carrier may be connected by links to the fixed spider. Specification 979,062 is referred to.
Patent GB-752031-A (GB)
Title: Improvements in or relating to supply circuit arrangements for electric loads
IPC: G05F3/22
Filed: 1954-06-21
Abstract: 752,031. Automatic regulation. PHILIPS ELECTRICAL INDUSTRIES, Ltd. June 21, 1954 [June 19, 1953], No. 18138/54. Class 38 (4). In Fig. 4 a load 2 is supplied, in series with the emitter-collector path of a junction transistor 4, from a D.C. source 12, 13 which in this arrangement is a three-phase rectifier. A constant base current is supplied from a D.C. source 5 so that the load current is maintained constant despite variations of the voltage of D.C. source 12, 13 or variations of load impedance. In a modification, suitable if the voltage variations of D.C. source 12, 13 are small, D.C. source 5 is dispensed with and a smoothed output from the three-phase rectifier applied between emitter and base of the transistor. Connection of a neon tube or a capacitor in parallel with the load is referred to. The load may be a valve amplifier, transistor amplifier, cathode-ray tube or electron microscope. An arrangement is described in which the supply to each of three different types of load is from a common D.C. source through a separate transistor to avoid coupling effects between the loads. Several arrangements for supplying push-pull valve and transistor amplifiers are described in some of which the emitter-collector volt drop serves as bias.
Patent GB-388980-A (GB)
Title: Improvements in or relating to seat rands for boots and shoes
IPC: A43B9/04
Filed: 1932-06-28
Abstract: 388,980. Boots &c. ROBERTS, S. A., Bellfoundry Lane, Kettering. June 28, 1932, No. 18213. [Classes 17 (i) and 17 (ii).] A method of making seat rands for boots and shoes from a single straight strip 1a of leather skived on one face, comprises wetting or steaming the strip, bending it into arcuate form so that the thin edge 3 is on the inside, inserting the bent strip 1a into a mould 7, as shown in Fig. 5, and subjecting it to heat and pressure between plates 9, 10, the plate 10 being shaped so as to impart a hollow or concave seat formation to the strip, so that the strip 1a is further bent and consolidated in the form of a seat rand 15, Fig. 7. As shown in Fig. 5, the plate 10 has two convex faces so as to enable seat rands to be produced two at a time in the same mould. In a modification, a skived strip 1b, Fig. 10, has a portion removed from its thicker edge to provide a ridge or like formation 18. This strip 1b is then treated and bent as described above, and is then placed between two plates 9a, 11a, in a mould 7, as shown in Fig. 12, the plate 9a having a marginal groove 20 formed in one of its faces, so that the strip 1b is further bent and the material provided by the ridge formation is caused to protrude from the other face of the strip 1b into the groove 20 whereby a seat rand 22, Fig. 15, is formed having a hollow or concave seat formation and a marginal bead 21, which serves to simulate a continuation of a storm welt when used with a boot or shoe having such a welt.
Patent GB-339998-A (GB)
Title: A new or improved method of operating combustion turbine plants
IPC: F01K23/08
Filed: 1929-06-13
Abstract: 339,998. Holzwarth, H. June 13, 1929. Working-fluid supply.- A heat exchange apparatus 18, in which the two fluids do not mix, is used to cool the hot gases generated in the explosion chamber 10 before the gases pass to a turbine or other motor 21, a cooler gas (which may be steam) entering the apparatus at 19 being heated up before passing to a turbine or motor 23. The pressure of the second gas on entry is approximately the same as the pressure of the combustion gases when they enter the heat exchanger. -. The two gases may feed the same turbine. The heat exchange apparatus may replace a superheater for steam passing to a turbine.
Patent GB-1365607-A (GB)
Title: Frequency synthesizer
IPC: H03L7/23
Filed: 1972-04-20
Abstract: 1365607 Frequency synthesizers PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 20 April 1972 [23 April 1971] 18312/72 Heading H3A A frequency synthesizer comprises a first control loop 2 including a mixer 10, a detector 11 and a controlled oscillator 1, the latter being locked to a frequency equal to a harmonic of the output F 1  of a first reference generator 3 minus (or plus) a frequency shift determined by the detector 11, a second control loop 7 for stabilizing the outputs F 1 , F 2  of the first reference and a second reference generator 3, 6 respectively at an adjustable frequency difference determined by a variable divider 12 so that the output F 2  of 6 has a harmonic corresponding to the output F 0  of the controlled oscillator 1, and a third control loop 9 for disturbing the synchronization of oscillator 1 when the above correspondence is not achieved. The detector 11 may be a phase discriminator or a frequency discriminator (11, Fig. 2, not shown) operating at the desired shift frequency. The loop 7 also includes a pulse mixer 5 for obtaining the frequency difference of outputs F 1 , F 2  and a phase discriminator 15 for comparing the above frequency difference with the divided output of generator 3. When the required output F 0  does not correspond to a harmonic of F 2 , a pulse mixer 8 applies an alternating voltage via a capacitor 16 and a low pass filter 14 to unlock oscillator 1. In the embodiment of Fig. 2 (not shown), the detector 11 is formed by a tuned circuit follosed by a diode detector. It has also been indicated that a frequency discriminator of the type used in the embodiment of Fig. 2 (not shown) may be connected in series with the phase discriminator 11 and the output of one of the discriminators may be optionally used to control the oscillator 1. Further, the fixed divider 13 may be programmed to provide one of two fixed shift frequencies.
Patent GB-596071-A (GB)
Title: Improvements relating to furnace and like door operation
IPC: C21D9/00
Filed: 1945-07-17
Abstract: 596,071. Furnace doors ELLIS, C. C., and WILD-BARFIELD ELECTRIC FURNACES, Ltd. July 17, 1945, No. 18315. [Classes 51 (i) and 51 (ii)] [Also in Group XXV] The sliding door 2 of a furnace or the like is counterbalanced by the weight of the furnace which is carried on a base 3 by a pivot bearing 4 at the back whilst the front is supported by sprockets 5 each resting on a chain 6. The chains are each anchored at one end 7, the other end being led over an adjustable sprocket 8 for attachment to a link 16 connected to the short arm 15 of a bell crank 9. The long arm 10 is connected to a pusher link 25 under the door 2. The door 'is operated by a handwheel 13 and screwed shaft 12 which, by means of a link 11, is coupled to another arm of the bell crank. In modifications, the sprocket and chain mechanism is replaced by a toggle or like linkage, and the pivot 4 is adjustable or the effective lengths of levers are regulable, to compensate for the weight or distribution of the furnace charge. The furnace may be slightly tilted up so that the door may lie closely against the entrance.
Patent GB-420691-A (GB)
Title: Improved thread-guide for winding and like frames
IPC: B65H57/00
Filed: 1933-06-28
Abstract: 420,691. Clearer thread-guides for winding-machines. BILLINGTON, T., 7, Hoyle Street, Facit, near Rochdale. June 28, 1933, No. 18344. [Class 120 (ii)] A clearer thread-guide for winding - machines comprises a T-shaped member 5, the cross-piece of which has an horizontal edge and a member 6 adjustable on the member 5 and having an open - ended - slot 7, the upper horizontal edge of which with the edge of the member 5, forms a slot for the thread which is guided thereto by the curved edge 8 of the member 6. The member 6 has flanges 9 which embrace the ends of the member 5 and is adjusted thereon by a screw 11 which engages the member 5 and has its head disposed in a slot 10 in the member 6; the members are clamped together by a screw 13 which passes through a hole in the member 6, the hole being larger than the screw to limit the adjustments of the member 6 on the member 5. The member 5 has a screw-threaded shank 4 by which it is mounted on the machine. According to the Provisional Specification the adjustable member may be duplicated to provide a pair of slots or may be arranged to give a right-hand or left-hand slot; also the device need not be adjustable.
Patent GB-564984-A (GB)
Title: Improvements in and relating to coffee
Filed: 1943-11-08
Abstract: Green coffee is chilled to at least 32 DEG  F., it is then optionally moistened, as by steam, and finally treated with ultra-violet rays for a few minutes.
Patent GB-686267-A (GB)
Title: Improvements relating to presses and to moulds used therein
IPC: B29C43/00
Filed: 1950-07-25
Abstract: 686,267. Moulds for presses. PULP INDUSTRIES, Ltd., and DAVY, D. C. July 24, 1951 [July 25, 1950], No. 18503/50. Class 87 (ii). Opposed pairs of side walls 1 of a mould are mounted so that in their opening and closing movements they are moved by cranks in an arcuate path in opposite directions and are maintained parallel to each other. The walls are mounted by means of lugs 2 on two pairs of upper and lower crank rods 3 extending between pairs of cranks 4. The cranks are rotated in unison by means of rack-and-pinion gears 7, 8. The racks are set in motion after a lower platen (not shown) has fallen a sufficient distance to detach itself from the moulded article. The cranks then move downwardly from the horizontal (closed) position and pull the article away from the top plate (not shown). The article is released and the cranks move into the horizontal (open) position shown. The two pairs of side walls may move simultaneously by or in sequence.
Patent GB-1349916-A (GB)
Title: Organotin miticidal and insecticidal compounds
IPC: C07F9/02
Filed: 1972-04-21
Abstract: 1349916 Tricyclohexyltin compounds STAUFFER CHEMICAL CO 21 April 1972 [10 Dec 1971] 18529/72 Heading C2J Compounds of general formula where R 1  and R 2  are C 1 -C 6  alkoxy or alkyl, or cyclo-alkoxy, are prepared by reacting a tricyclohexyltin halide with an appropriate alkali metal dithiophosphorus compound in a neutral solvent such as acetone. In exemplified compounds, both R 1  and R 2  are ethoxy, n-propoxy, iso-propoxy, iso-butoxy or cyclohexyloxy, or R 1  is ethyl and R 2  is ethoxy or iso-propoxy. The compounds have pesticidal properties and compositions containing them may be used in the form of emulsions, suspensions, solutions (in e.g. sesame oil), dusts and aerosol sprays (with CCl 2 F 2  as propellant).
Patent GB-260038-A (GB)
Title: Apparatus for determining and measuring small changes of frequency of electric oscillation circuits
IPC: G01S11/02
Filed: 1925-07-21
Abstract: 260,038. L÷wy, H. July 21, 1925. Thermionic generators.-An apparatus for determining and measuring small changes of frequency of electric oscillation circuits consists of a valve transmitter comprising a self-oscillating primary circuit in which the capacity, inductance, resistance, and filament current are so selected that small changes in frequency cause large changes in current intensities, and an aerial circuit coupled thereto and containing a measuring device for the aerial current. In the arrangement for location of mineral strata by aerial exploration shown, three variable condensers 9, 10, 11 of different capacities are connected in parallel for fine adjustment, a variable inductance 12 being arranged in series. The current in the aerial is measured by means of an ammeter 4, a second ammeter 14 enabling the saturation current of the valve 1 to be measured when a switch 13 is moved to its upper position. The back coupling 2, antenna coil 3, block condenser 5, choke coil 6, anode battery 7, and filament battery 8 are connected as shown. In place of a single open oscillation circuit, coupled open or closed circuits may be employed.
Patent GB-453971-A (GB)
Title: Improvement in recovery of hydrocyanic acid from coke oven or other hydrogen sulphide-containing gases
IPC: C10K1/10
Filed: 1935-06-28
Abstract: <PICT:0453971/III/1> In the recovery of hydrocyanic acid from hydrogen sulphide containing gases such as coke oven gas, in which the gases are washed with water, at temperatures preferably below 15 DEG  C. in a scrubber 1, the solution thus formed is treated for the removal of the sulphur gases in an aerator 7 before being treated for the recovery of its hydrocyanic acid.  The hydrogen sulphide-free liquid heated to a temperature of 55 to 70 DEG  C. in a heater 18 is sprayed down a scrubber 23 in countercurrent to an inert gas, and the gas mixture obtained is freed of hydrocyanic acid in an absorbing tower 28, down which caustic soda or other absorbent is sprayed.  The inert gas preferably comprises the purified gas of the plant such as coal gas or coke oven gas and leakage is replaced by gas from a supply pipe 33, a tower 35 for removing carbon dioxide being interposed in the system.  The caustic soda may be replaced by other absorbents such as a zincate solution. The sulphur gases may be removed in the tower 7 by aeration, by precipitation therein with copper sulphate, lead carbonate, &c., or by chemical reaction with chlorine, sulphur dioxide, bromine, chloride of lime, potassium permanganate or other oxidants.  The towers may be filled with non-reacting contact material.  U.S.A. Specification 1,213,429 is referred to.
Patent GB-264545-A (GB)
Title: An improved automatic rotary gathering and collating machine
IPC: B65H39/041
Filed: 1925-07-22
Abstract: 264,545. Young, G. W. July 22, 1925. Signature gatherers; sheet-separators and supports.-A rotary gathering and collating machine of the kind in which the piles of sheets to be gathered are supported on a rotary carrier, and oscillating suction separators are provided for transferring the sheets from the rotary carrier to a conveyer, is constructed with sheet-separators e which are moved in a circular path to transfer the sheets to the conveyer d, and supporting fingers j are provided to assist in holding the sheets during transfer to the conveyers. Preferably two sets of sheet-separators e and conveyers d are provided on opposite sides of a rotary carrier a fitted with a number of rows of pivoted cradles b suspended from pivots a<2>. Each row of cradles b contains a number of piles of sheets corresponding to a complete signature, and at each operation of the lifters a sheet from each pile is placed on each conveyer d. The carrier a is driven by worm gearing c<3>, c<4> from a shaft c, which drives the conveyers d by sprocket gearing, and also drives cam-shafts g<2> by bevel gearing. Cams g<1> on the the shafts g<2> operate to raise and lower hollow shafts f to which the suction separators e are connected, and cams g<3> operate lever-and-link mechanism h - - h<5> to oscillate the separators e from their positions over the sheet piles to their positions over the conveyers d. At the ends of the conveyers are sheet-packing racks i for receiving the collated signatures. The fingers j are operated by cam-mechanism so as to move under the backs or folded edges of the sheets as they are lifted by the lifters e, the fingers being withdrawn as the sheets are deposited on the conveyers. The fingers may be controlled by dash-pot connected to the shaft f.
Patent GB-352212-A (GB)
Title: Improvements in or relating to the production of variegated textile yarns
IPC: D01H5/36
Filed: 1930-06-19
Abstract: 352,212. Roller-driving gear for producing variegated yarns. SYKES & SONS, Ltd., J. and SYKES, E., Canal Works, Aspley, Huddersfield. June 19, 1930, No. 18698. [Class 120 (ii).] Variegated yarns are produced by increasing the speed of one or more delivery rollers above the normal rate which gives an evenly twisted yarn, the rate of increase and duration thereof being governed by cams. The bottom rollers a, b of two pairs of delivery rollers a, a', b, b<1> are driven at a fixed rate through pawl and ratchet mechanism (not shown) which permits an additional angular velocity to be imposed on the normal rate of rotation. The bottom rollers carry further ratchets h, i engageable by pawls h<1>, i<1>, the discs on which the pawls are mounted being connected to gears h3, i3 which can be rotated by toothed segments j, k. The segments are connected by adjustable links to pivoted bars m, n which carry runners m<1>, n<1> bearing on cams m<2>, n<2> attached to a disc y which is rotated by a gear train pl .. p<4>. Weights m<3>, n<3> ensure that the arms follow the cam profile. When a sector swings to the left its associated pawl slips over the ratchet teeth, and the roller continues to rotate at normal speed. When a sector swings to the right, an additional rate of rotation is imparted to the roller, and the pawl which transmits the normal drive slips over its ratchet wheel. The cam contour governs the angular acceleration of the rollers, and according to the rate and duration of such acceleration, the yarn or yarns being delivered more quickly will partly or wholly " bury the remaining yarn or yarns. Knopping blades r, r<1> are provided, and are actuated by the cam s<2> driven by gears s<4>, s<5>, s,<6> p<4>. When a knop is to be formed, the rate of delivery of the yarn concerned is accelerated and the knopping blades raised ; at the desired time, the blades are lowered and the rate of delivery reduced to normal, whereby the blades act to consolidate the turns of yarn which have been wrapped about the other, thus producing a knop.