baber/WOPTO huggingface dataset:
Patent GB-802201-A (GB)
Title: Improvements in side delivery rakes and/or swath turners
Inventor: BAMFORD JOHN GEORGE
IPC: A01D78/00
Filed: 1954-09-18
Abstract: The subject-matter of this Specification is identical with that of Specification 802,203, but the claims differ.  Specifications 770,015, 767,331, 753,602 and 748,240 also are referred to in the Provisional Specifications.
Patent GB-1181704-A (GB)
Title: Improvements in Electrostatic Suspension Arrangements of Gyroscope Rotors
IPC: G01C19/38
Filed: 1967-06-12
Abstract: 1,181,704. Gyroscopic mounting. THOMSONCSF. June 12, 1967 [July 8, 1966], No.27107/67. Heading G1C. A device for the electrostatic suspension of a gyroscope rotor 4, the rotor being in the form of a hollow metal sphere, comprises a plurality of electrodes 23, 23', 24, 24 disposed in groups on a plurality of axes of suspension, the electrodes enclosing said rotor at a spaced distance therefrom, and self-oscillating systems respectively associated with said groups for generating an electrostatic field between each of said electrodes and said rotor, each of said systems including means for varying said fields generated between the electrodes of said associated group and said rotor as a function of the distances between said electrodes and said rotor. Fig. 1 illustrates the basic circuit diagram of a self-oscillating system which produces oscillations whose amplitude can be controlled. An amplifier 1 is connected to a grounded oscillatory circuit 2 which comprises an inductor 20 a capacitor 21 and a resistor 22 connected in parallel. A variable positive feedback circuit comprising a non-linear device 3 with a control input 30, is used to vary the output voltage across the oscillatory circuit 2. In the embodiment shown in Fig. 2 two groups of electrodes are shown situated on the O X axis. Voltages applied to the electrodes create attraction forces which maintain the rotor in an equilibrium position. If the rotor moves towards one electrode, the attractive force in that electrode is decreased to return it to its equilibrium position.
Patent GB-209469-A (GB)
Title: Improvements in or relating to pumps
IPC: F04B7/04
Filed: 1922-10-07
Abstract: 209,469. Fletcher, C. Oct. 7, 1922. Air vessels ; valveless pumps.-The plunger b is made hollow to serve as an air vessel. Ports f, e register respectively with inlet and delivery ports c, d at the ends of the suction and delivery stroke. An air vessel d<1> adjoins the delivery pipe d<2>. Several pumps may be arranged in series. According to the Provisional Specification the pump inlei may be controlled by a non-return valve, the cylinder may be made of a larger diameter than the plunger, and the plunger may work in a tubular part extending into the cylinder, the bottom end of the tubular part dipping into the liquid. Or the cylinder may be made with its upper part at right angles to the lower part, the plunger being in the lower part and serving to compress air through the liquid in the lower part of the pump.
Patent GB-629826-A (GB)
Title: Improvements in steam spotting boards used in the dry cleaning of fabrics and garments
IPC: D06C7/00
Filed: 1947-10-10
Abstract: 629,826. Cleaning fabrics and garments. BRAITHWAITE & SON ENGINEERS, Ltd., I., and ENGLISH, R. E. Oct. 10, 1947, No. 27215. [Class 138(i)]  A steam spotting board used in dry cleaning processes for fabrics and garments is fulcrummed about midway along its length on a suitable stand or pedestal and one end of the board being connected to the valve supplying steam to the spotting gun so that by exerting a slight pressure on the opposite end of the board the valve can be operated. As shown in Fig. 1 a metal spotting board D is pivotted in supports b fixed to a stand A. The right hand and widest end of the board D is connected by a rod e to a lever e<SP>1</SP>, which lever operates a staem valve C, fitted on a separator B connected to the steam supply, and which valve is connected to a spotting gun C<SP>1</SP> by a flexible hose c. The spotting gun can be hooked on a rod H on the side of the stand when it is not in use. The widest end of the board D rests on supports a on the stand. The lever e<SP>1</SP> may also be operated by a rod f<SP>2</SP> connected to a foot pedal F and operation of the pedal will not move the board owing to the provision of a lost motion device, comprising a slot e<SP>2</SP> in the connection of the rod e to the levere<SP>1</SP>. The metal board D is hollow and a portion of its upper surface on the left of the figure is perforated so that when the spotting gun is applied to an aperture d<SP>1</SP> in the edge of the board, the board may be used as a steaming table. The valve C may be a dual valve operating in known manner to supply wet or dry steam according as to whether the valve is partially or fully operated. Incorporated with the stand A are a garment tray A<SP>1</SP> and a detergent holder G underneath which holder is a drip tray G<SP>1</SP>.
Patent GB-1146735-A (GB)
Title: Hybrid ratio control
IPC: H03M1/00
Filed: 1966-06-17
Abstract: 1,146,735. Digital position control. LICENTIA PATENT - VERWALTUNGS - G.m.b.H. 17 June, 1966 [23 June, 1965; 16 Sept., 1965; 7 Jan., 1966; 29 April, 1966 (2)] No. 27222/66. Heading G4H. In a digital position control system, e.g. for a machine tool, the digital input S 1 , Fig. 1, is compared at RW with a digital representation S 2  of the actual position, the error signal S 3  being converted to an analogue form i 1  and compared at VG with a speed representation i 2  from a tachogenerator so as to control the speed of the driving motor SM through amplifier SV. There are at least two such systems, one for each co-ordinate direction of movement of the cutting tool. The digital-to-analogue converter DA may be as shown in Fig. 2. The input signals control switches B (e.g. transistors) in parallel with resistors W having weightings appropriate to the significance of the corresponding signals. The resistors are connected as a potential divider, the sections of which correspond to the two directions x, y. The voltage outputs U x  and U y  together equal the source voltage U. The voltage current characteristic of the source SU is such that as the current increases the voltage at first remains constant but after a certain current it falls sharply. In another arrangement a current from a source is distributed between the digital-to-analogue converters. In either case the speeds of the two motors are in the ratio of the error signals, and their sum is approximately constant. The value of the constant current from the current source may be set by digital control signals, e.g. from a programme tape. This current may be constrained to have a parabolic characteristic so that the resultant speed is constant. As the desired position is approached the speed control loop becomes ineffective and the control is then by the position signals, so that a precise approach to the desired position is obtained. The input signals may be in natural binary code or binary-coded decimal. It is suggested that the digital-to-analogue converter may be replaced by an hydraulic form using throttles instead of resistors.
Patent GB-1086968-A (GB)
Title: Starting device for a single-phase asynchronous motor
IPC: H01H61/00
Filed: 1966-06-17
Abstract: 1,086,968. Control of A.C. motors; thermal switches. DANFOSS A/S. June 17, 1966 [June 25, 1965], No. 27226/66. Headings H2B and H2J. A bimetal switch 9 opens its contacts 10, 11, when sufficiently heated by the starting current through the auxiliary winding 5 of single-phase motor 3. A glow discharge is then formed between the contacts 10, 11, which generates enough heat to ensure that the switch 9 remains in its open position while the motor is running. The glow discharge is due to the phase displacement between the voltages across the main and auxiliary windings 4, 5, respectively.
Patent GB-171272-A (GB)
Title: Improvements in writing desks
IPC: A47B17/04
Filed: 1920-09-25
Abstract: 171,272. Howe, A. L. Sept. 25, 1920. Writing-desks; slopes.-The side wings 10 of a roll-top desk are hinged to a sliding writing surface 3 and can be dropped when the writing bed is pulled out to increase the effective width of the desk. Alternatively, the wings 10 and the bed 3 may be independently movable. The wings 10 when dropped prevent displacement of the bed 3 from its extended position. The bed 3 carries sliding bevelled guides on which resilient studs 8 may be mounted to limit the movement of the bed. The vertical parts 16 of the grooves for the laths 18 of the roll-top cover are made in boards 14 which carry dowels 15 which fit in holes 17 of the wings 10 when the writing bed 3 and wings 10 are pushed inwards to the full extent.
Patent GB-362991-A (GB)
Title: Improvements in or relating to fountain pens
IPC: B43K29/00
Filed: 1930-09-13
Abstract: 362,991. Pencil and like holders; labels. VALENTINE, H. J., 154, Perth Road, Dundee, Forfarshire. Sept. 13, 1930, No. 27418. [Classes 73 and 146 (iii).] A fountain pen, pen cap, or propelling pencil is provided with an identification device consisting of a tip of transparent material, such as celluloid or the like, applied to the end of the pen &c., and covering a small article, print, transfer, photograph, monogram, or the like. A piece of material, on which a distinguishing mark has been printed, is placed beneath the tip before it is pressed into position, the tip being frictionally. mounted or secured by adhesive. Alternatively, a transfer is secured to a piece of transparent material which is then embossed and secured in position.
Patent GB-645756-A (GB)
Title: Improvements relating to electron discharge devices such as television transmission tubes
Inventor: MCGEE JAMES DWYER
IPC: H01J31/34
Filed: 1947-10-14
Abstract: 645,756. Cathode-ray tubes. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Oct. 14, 1947, No. 27466. [Class 39 (i)] In a cathode tube of the kind in which a mosaic electrode is scanned by a beam which is deflected by coils 15, Fig. 1, to produce output signals, spurious signals caused by eddy currents induced by the coils in an electrode 8, providing a uniform field in the path of the beam, are reduced by the provision of gaps 11 in the electrode. In the form shown, the electrode 8 consists of an internal coating subdivided, for at least part of its length, into strips. In another form, the coating comprises axially spaced rings 19, Fig. 2, joined at one end to a strip 22, formed by an extension of the continuous part 9. The tube may comprise a focusing coil 13, alignment coils 14 and a retarding electrode coating 12.
Patent GB-680596-A (GB)
Title: Process for shaping tubes
IPC: B21C37/16
Filed: 1950-11-10
Abstract: 680,596. Making tubes. HENDERSON, L. B. Nov. 23, 1950 [Nov. 10, 1950], No. 27479/50. Classes 83 (ii) and 83 (iv). Drawing.-A process for shaping a tube comprises machining the exterior surface of the tube so that the wall thickness varies along its length and drawing the tube without a mandrel so that it has a cylindrical exterior surface and a varied wall thickness. A mild steel, seamed or seamless, tube, such as for a cycle &c. frame, of larger diameter than the finished tube is turned down to the shape shown in Fig. 2 and then cold drawn through a die to a constant outside diameter, so forming a longer tube having thickened end portions 4, Fig. 3. The tube may be formed with a tapered or double tapered bore.
Patent GB-831592-A (GB)
Title: A process for the stabilization of alcohols and esters
IPC: C07C29/94
Filed: 1958-08-27
Abstract: Alcohols or esters are stabilized by adding thereto o- or p-dihydroxy benzene or a -naphthol or mixtures thereof.  If desired, the alcohols may be esterified in the presence of the dihydroxy benzene or naphthol compound.  Esterification may be carried out by conventional methods using the acid or anhydride in the presence of sulphuric acid or p-toluene sulphonic acid as catalyst.  The process is particularly applicable to the stabilization of oxo alcohols and of esters of di- or poly-basic carboxylic acids, e.g. phthalates, sebacates and adipates of oxo alcohols containing 6-10 carbon atoms in the molecule.  The amounts of o- or p-dihydroxy benzene or a -naphthol, if used separately, are generally in the range of 0.005 to 0.2% by weight based on the alcohol.  If o- and p-hydroxy benzenes are used together the quantity used is between 0.0005 and 0.02% by weight of each based on the alcohol.  In an example oxo alcohols containing 7-9 carbon atoms are esterified with phthalic anhydride in the presence of sulphuric acid in the presence of varying quantities of the above-mentioned stabilizers. Specification 690,847 is referred to.
Patent GB-503675-A (GB)
Title: Improvements in method and apparatus for drawing and twisting textile fibres
IPC: D01H1/00
Filed: 1937-10-12
Abstract: 503,675. Drawing fibres. UNITED STATES RUBBER PRODUCTS, Inc. Oct. 12, 1937, No. 27678. Convention date, Oct. 15, 1936. [Classes 120 (i) and 120 (ii)] Drawing-apparatus especially adapted for the spinning of short fibres, including the shortest grades of asbestos, comprises feed and draft members consisting respectively of dogs 42, 47 co-operating with resiliently mounted bars 68, 77 whereby successive distinct portions are alternately fed and drawn, the feeding being intermittent and the draft effected by gripping the ends of a previously fed portion. The material is continuously twisted, and means are provided to determine the length to which the twist is imparted when the drafting-means are inoperative. The dogs 42, 47 are carried by lever arms 35 operated by eccentrics 32 under control of springs 39, 40 and adjustable eccentric-stops 88, 89. The eccentrics engage slots 33 in the lever arms which have a slot connection with their pivots. In one revolution of the cams, the dogs 42, 47 are advanced into contact with the bars 68, 77 to engage the strand or roving and move longitudinally of the strand to an extent determined by the setting of the eccentrics to effect the feeding and drawing, and are then withdrawn and return to the initial position for re-engagement with the roving. The dogs 42, 47 operate through a slot in a fixed plate 51, and the co-operating bars 68, 77 slide under spring control in slots in a plate 60 which is normally pressed against the plate 51 by springs 62. As shown in Fig. 1, strands or rovings passing over a driven guide rod 30 from bobbins 90 are doubled and drawn, and are twisted by ring and traveller apparatus. Stationary bars 54, 73 are respectively mounted in the plates 51, 60 and serve to grip the roving during the time that the feeding and drafting dogs are disengaged. The arrangement is such that the twist runs up to the nip formed by the bars 54, 73, so that the lower end of each portion has some twist when subjected to draft by the dog 47. The roving may be wetted.
Patent GB-708338-A (GB)
Title: Apparatus for giving access to or from a ship's deck
Inventor: LAMB JOHN
IPC: B63B27/14
Filed: 1950-11-13
Abstract: 708,338. Lifts; guided platform hoists; overwind preventing. ANGLO SAXON PETROLEUM CO., Ltd. Oct. 23, 1951 [Nov 13, 1950], No. 27705/50. Classes 78 (3) and 78 (5) Passengers and freight are raised and lowered between a quay and the deck of a ship by means of a wheeled car which is hauled up and down by a winch with its wheels in direct contact with the ship's side. The car 1, Fig. 1, is equipped with rubber tyred wheels 5, and is connected with the winch (not shown), by a cable 2 which is connected with the car through cables 8 and passes over pulleys 3, 3a. For stability of the car, and to ensure that its wheels remain in contact with the ship's side throughout its movement, it is necessary to maintain the cable 2 at an angle of approximately 5 degrees with the vertical for all positions of the car, and this condition is obtained by extending the wheels 5 outwardly from the car as it descends. In the arrangement shown in Fig. 1 rotation of the wheels is transmitted through gearing (not shown), including pinions which engage rack bars on the car and extend the wheels to the position shown chain dotted. The wheels 5 may be castored to inhibit lateral movement of the car during operation, and if such an arrangement is used the drive from each wheel is transmitted through a universal joint. In a modification, (not shown), the pulley 3 is adapted to move horizontally during movement of the car to maintain the rope 2 at the correct angle. Fig. 12 shows an arrangement in which the wheels are extended by rack and pinion mechanism (not shown), operated by rotation of a pulley 59 on the car; the cable 2 in this arrangement being anchored to the ship at 60 and passes over pulleys 59, 3 to a winch drum 4. A further cable 67 which is wound on a drum 63 of half the diameter of drum 4, and is secured to the car at 69, increases the stability. As shown in Figs. 1, 4 a pivoted track member 7 is moved into a horizontal position to launch the car, and provides tracks to guide the car when passing between the decks 11, 12. Overwind preventing.-The winch (not shown), is operated by an electric motor having a controller which is adapted to be isolated when a collar 29 on the car (Fig.. 1) abuts against an abutment 28 on a cord 23 so operating a limit switch 24, cord 23 can also be operated manually by an occupant of the car. The cord 23 may be wound off a hand winch 30 to place the abutment 28 at any desired height. A further limit switch (not shown), is provided to isolate the controller at the upper position of the car, and an overall control is effected by switch mechanism which is controlled bv the number of revolutions made by the winch drum.
Patent GB-285341-A (GB)
Title: Improvements in and in connection with guard devices for use in carborundum and likewheels
IPC: B24B55/06
Filed: 1927-04-19
Abstract: 285,341. Webb, J. W. April 19, 1927. Guards. - A guard 11 for a carborundum or like wheel 22 turns on pivots 12 in the framing 13 and is adjusted by a screwed rod 15 engaged by a nut 16 supported on a cross strut in the framing and rotated by a, hand-wheel 20. A nut 23 on the rod 15 supports the end 24 of one side of the dust exhaust conduit 25, which end turns on a pivot 26 and thus moves with the guard. The extreme end 27 of the side of the conduit may be turned about a pivot on the end 24 to prevent obstruction of the work. The wheel is also protected by a box-like, guard such as is described in Specification 286,494.
Patent GB-896859-A (GB)
Title: Improvements in or relating to hydraulic control mechanism
Inventor: MERRITT HENRY EDWARD
IPC: A01B63/111
Filed: 1957-09-03
Abstract: 896,859. Fluid-pressure servomotorcontrol systems. MASSEY - FERGUSON (UNITED KINGDOM) Ltd. Sept. 3, 1958 [Sept. 3, 1957], No. 27746/57. Class 135. [Also in Group XXXI] A tractor with an hyraulic powerlift mechanism has a piston 13 and cylinder 12 for raising, lowering or holding stationary a hitch-linkage connected thereto, a control valve 23 which is between the cylinder and a pump 17, which is subject to joint manual and automatic control and which is movable into an equilibrium position to supply hydraulic fluid to the cylinder and piston at a restricted rate sufficient to maintain a pressure to support the hitch-linkage when loaded; it also has a valve 21 to relieve the pump when it is supporting the load. A gear-wheel pump 17 draws oil through a filter 20 from the tractor sump 18 and feeds it through the valve 21 and a non-return valve 105 to a valve 23. The valve 23 is operated either by lever 38 or lever 39 according as the hand lever 36, to which they are both pivoted, is in its range A-B or its range B-C. In the range A-B the levers set the working depth subject to draft-control through the linkage 45, 46 as described in the Specification 896,858, in this Group, by causing the piston-rod 14 to rotate an arm 15 on a cross-shaft 16 which carries lift arms connected to the hitch linkage (not shown). In the range B-C the shaft 16 is moved similarly but, control is exercised by a cam 81 and stud 82 which serve to lift the lever 39 from the valve 23 when the shaft 16 reaches a position corresponding to the setting of lever 36. When the spool 31 of valve 23 is fully raised oil at pressure is fed through a non-return valve 24 to the cylinder 12 excess oil is discharged through the valve 21. At " draft control " the lever 38 depresses the spool so that most of the oil is returned to the sump 18 through the orifice 26 and the load on the hitch-linkage forces oil from the cylinder under the valve 24, past a check valve 125 which closes if the flow is too rapid and out through an adjustable valve 121 to the orifice 26. If the load drops excessively the draft-control gear operates to cause lever 38 to release the spool 31, so that after alternate rising and falling a position of equilibrium is reached with the outlet 26 almost closed and the oil being delivered to the cylinder at a restricted rate. Operation at " position control " is similar, but the spool 31 is brought to its equilibrium position by action of the cam 81 on the lever 39. In neither instance does the equilibrium position correspond to any fixed position of the hand lever. The relief valve 21 relies for its operation on the pressure differences between the top 94 and bottom internal surfaces of its piston due to the hole 101. When the difference is sufficient to overcome the spring 95 the valve rises and snaps open due to additional pressure of the oil which reaches the underside of the piston. If desired, the valve 21 can be reset by opening the valve 121 by hand. Specification 896,860 also is referred to.
Patent GB-193101-A (GB)
Title: Improvements in or relating to air cushions or seats
IPC: A47C4/54
Filed: 1921-10-20
Abstract: 193,101. Morley, H. Oct. 20, 1921. Citshions, pneumatic &c. An india-rubber or like bag is mounted within a skeleton frame adapted to prevent undue expansion while allowing compression of the cushion, the frame comprising a lower lattice part which can be used as a spring seat on reversal of the cushion. The skeleton frame comprises a lower rectangle c of cane or metal with cross members d forming a lattice-like spring surface. Metal straps e connect the lower lattice with an upper frame f. Between the frames c, f is an air bag a, a leather or like cover and, between the two, a filling of felt, wool, horse hair or the like. An adjustable textile strap h limits the expansion of the frame.
Patent GB-711529-A (GB)
Title: Elastic fluid turbine plant
Inventor: WHITEHEAD LESLIE THOMAS
IPC: F01D25/28
Filed: 1950-03-27
Abstract: 711,529. Elastic-fluid turbines. POWER JETS (RESEARCH & DEVELOPMENT), Ltd. March 15, 1951 [March 27, 1950], No. 27837/52. Divided out of 711,463. Drawings to Specification. Class 110(3) Relates to an elastic fluid turbine comprising a bladed rotor supported by bearings at each end, stationary housings enclosing the bearings and a stationary structure mounted on and surrounding the housings and comprising a bladed stator and gas flow ducting attached to the ends thereof. According to the invention the stationary structure can be separated into two parts, one mounted on each bearing housing, and one bearing housing can be moved axially. to permit either bearing to be exposed by axial separation of its housing and the part of the stationary structure mounted thereon from the bearing and the rest of the stationary structure. The subject-matter described is identical with that described in Specifications 711,463 and 711,528 but the claims differ. Specifications 640,969 and 645,401, [Group XXXIV], also are referred to.
Patent GB-1270446-A (GB)
Title: Thymus extract having a therapeutic action
Inventor: PINI EMILIO
IPC: A61K35/26
Filed: 1969-06-02
Abstract: 1,270,446. Thymus extract. LABORATORI FARMACO-BIOLOGICI ELLEM S.p.A. 2 June, 1969, No. 27850/69. Heading A5B. An aqueous extract of a lysed and deproteinized calf thymus gland has anti-leukopenic action and an action stimulating the production of antibodies. The extract may be diluted with glycerol and physiological salt solution.