baber/WOPTO huggingface dataset:
Patent GB-292778-A (GB)
Title: An improvement in or relating to pickers for looms for weaving
IPC: D03D49/36
Filed: 1927-07-04
Abstract: 292,778. Uttley, F. July 4, 1927. Pickers for use in Dobcross looms wherein a piece of buffalo hide is folded upon itself about midway of its length, the two legs a<2> being riveted together and made to form at one side, an eye or hole a<1> for the picker spindle and at the other side, a foot enlarged by a cap d for engagement with the shuttle are provided with a striking plate e for the picking stick, a central web e<1> of the plate fitting between the folds of the picker and being secured by the usual rivets c. The striking plate is made of T-bar or is cast or moulded to shape., and is narrower than the finished width of the picker. The plate projects and is curved for engagement with the picking spindle. The upper part of the plate may be formed to surround or form a part or the whole of the entrance to the spindle hole.
Patent GB-1175406-A (GB)
Title: Improvements relating to Textile Spinning Machines
IPC: D01H4/50
Filed: 1967-04-18
Abstract: 1,175,406. Break spinning. SCHUBERT & SALZER MASCHINENFABRIK A.G. 18 April, 1967 [26 April, 1966; 17 Aug., 1966], No. 17746/67. Heading D1D. In stopping a break spinning arrangement the feeding device 5 and the withdrawing device 3 are brought to rest before the spinning chamber 2<SP>1</SP> and the thread end E in the chamber is straightened approximately axially of the chamber and on starting up, the spinning chamber is set in motion before the feeding and withdrawing devices. As shown the end E is straightened by an air jet from the tube 31 through which the yarn leaves the chamber, the jet being created from a source of compressed air 33. The end E is blown through a diaphragm 6 which is then expanded by compressed air to grip the end. Yarn may be fed back into the chamber e.g. by reversing the rollers 3 or taking yarn from a reservoir so as to provide a sufficient length. In other forms the yarn end is straightened by being sucked in to the outlet 4 or the exit tube 31 is moved into the chamber to straighten the yarn. A plunger may be operated to grip the yarn end.
Patent GB-145612-A (GB)
Title: Improvements in the process for manufacturing flexible paper tubes
IPC: B31F1/20
Filed: 1920-06-29
Abstract: 145,612. Keller, E. Aug. 25, 1917, [Convention date]. Void [Published under Sect. 91 of the Act]. Bending, cupping, creasing, scoring, and the like. - In a process for manufacturing flexible paper tubes, a plain paper tube is first provided with comparatively shallow helical grooves, then compressed in an axial direction when moist, and allowed to dry. Fig. 1 shows one method of producing the shallow grooves on the tubes. The paper tube 5 having been slightly moistened is slipped over the threaded spindle 1 and secured thereto at one end by the locking device 4, so that the tube 5 and the spindle 1 may rotate together. The threaded nut 3, which although capable of moving along the spindle is secured against rotation, is slid over the tube 5 and the spindle 1 rotated. The threads of the nut 3 force the walls of the tube 5 into the threads of the screw spindle 2 thus producing the desired grooves. In a modified arrangement shown in Fig. 2, the nut 3 and the threaded spindle 2 remain stationary, while the paper tube 5 is rotated around the spindle and drawn between the nut and spindle to produce the grooves. In both constructions the depth of the nut thread, and in the second construction the spindle thread also, is gradually increased from the inlet towards the outlet end, to secure a gradual shaping of the paper tube. An oscillating movement may be imparted to the nut 3 to prevent the scraping of the paper and to facilitate working.
Patent GB-444726-A (GB)
Title: Improvements in or relating to rubber thread and processes for its production
IPC: B29D99/00
Filed: 1935-06-21
Abstract: In the manufacture of rubber thread with a fine fibre core by extruding the fibre and an aqueous dispersion of rubber, the extrusion takes place directly into a coagulating bath.  The fibre may be positioned in the extrusion orifice by a loop of wire, and may be central, or disposed near to the surface of the thread, which latter is advantageous if the fibre is subsequently to be removed. Animal or vegetable fibres such as silk, rayon, cotton, wool, may be employed, and they may be in the form of single filaments, or yarns, or a fine core with a layer wound thereon. Such threads are sufficiently inextensible for weaving, spinning, &c., but on stretching, the fibres, or the core, are ruptured, and the thread becomes elastic.
Patent GB-1432616-A (GB)
Title: Cirucit for controlling a motor of an impact press
IPC: B21J7/46
Filed: 1973-04-13
Abstract: 1432616 Automatic control of impact force GLASER VON PRAUN  ELEKTROMOTORENWERKE GmbH 13 April 1973 [14 April 1972 15 March 1973] 17844/73 Addition to 1245327 Headings G3N and G3R [Also in Division H2] The control circuit for the motor of an impact press described in Specification 1245327 is modified to obtain and maintain a desired impact force during each cycle of working strokes, by presetting a desired impact force for a stroke of the press, measuring the impact force produced during the said stroke, obtaining a difference between the desired and measured forces and causing the thyristors energizing the main windings or the retarding winding of the motor to be controlled by the difference to vary the impact force of a subsequent stroke to reduce the difference between the desired and actual impact force for the subsequent stroke. In the described embodiment, the programmer Pr emits a signal SA to a unit RF producing a signal W representative of a desired impact force, signals F which determine when the thyristors P R , P S , P T  and PB conduct to energize the main windings UM VM WM and the retarding D.C. energized winding UB VB, signals α which determine the firing angles over which the thyristors P R , P S , P T  conduct, and a signal L which actuates a memory in a storage device MS to emit a signal X representative of an impact force measured by a device ME preferably using resistance strain gauges, the signals X and W being applied to a comparator RV whose difference signal α determines the firing angle over which the thyristors PB conduct to determine the degree of braking during the stroke subsequent to the measurement obtained by the device ME. After production of the signal α the memory in the  device MS is erased to prepare for measurement of the impact force in the next stroke. Thus continuous correction occurs until the signals X and W are equal, any subsequent variation of the braking produced by winding U B  V B  being caused by alteration of the reference signal W as instructed by programmer P r  or by variation of the signal α' due to temperature or voltage changes in the control circuit and press. If desired the output of comparator RV may control the thyristors PR, P S , P T  instead of the thyristors P B .
Patent GB-111556-A (GB)
Title: Improvements in Heating and Cooling Apparatus and the like.
Inventor: GUY SYDNEY SLATER
IPC: F02F1/14
Filed: 1916-12-13
Abstract: 111,556. Guy, S. S. Dec. 13, 1916. Casings, constructions and forms of.-The jacket 4 around the engine cylinders or other chambers 2 is fitted with hollow wedge or V- shaped filling pieces 3 made of comparatively thin material and inserted in the spaces between the chambers. The filling pieces may be inserted through openings in the sides of the jacket and secured by the cover-plates 6, or they may be formed integral with the cover-plates.
Patent GB-753406-A (GB)
Title: Improvements in or relating to means for potential selection in telecommunications circuits
IPC: H04Q3/00
Filed: 1954-06-17
Abstract: 753,406. Automatic exchange systems. SIEMENS & HALSKE AKT.-GES. June 17, 1954 [June 17, 1953], No. 17879/54. Class 40 (4). Switching orders are arranged in pairs to apply the same potential to a register, the orders being differentiated by the operation or non- operation of an auxiliary device which can apply an auxiliary potential to the register. A subscriber's keysender has the keys T1-T0 arranged in pairs so as to connect one of five resistors R1-R5 across the line and at the same time open contacts Tg to cut the ordinary loop circuit. Keys T1-T5 also close contacts Tt. Lifting the handset closes contacts GU to operate pre-selector VW until an idle register ES, when feed relays A, B energize. B operates Q, H, and auxiliary relay B1. H operates C which seizes the first group selector VE. Assume that the subscriber depresses key T2 to form new loops through R2 and Rh instead of through contacts Tg. The feed relays A, B are so tuned that B falls back while A holds up. B releases H slowly, but before Q can fall back H reenergizes with reversed current over the loop including R2, the loop including Rh being inoperative because of rectifier G2. Meanwhile B has restored B1. The loop including R2 comprises a potential divider with R2 characterizing the digit 2 and the potential so selected is stored in capacitor CS1. B1, which had previously energized V, now releases V slowly to step rotary selector D so that the next digit is stored on capacitor CS2. When key T2 is released the selecting loop through R2 is cut out, contact Tt opens, and Tg closes the speech loop again but rectifier G2 does not pass current in the reverse direction so that H falls off to restore Q. B then pulls up again to the speech loop and H, B1, Q, V re-energize. If T7 is operated in place of T2, characterizing resistance R2 is again put nto the selecting loop but key contacts Tt are not closed. Consequently, after the opening of contacts Tg, both feed relays A, B fall off and auxiliary capacitor Cp, previously charged, is put into series with resistor R2 and adds its charge to the storage capacitor CS1. The prior state of the art is represented by references to Specifications 601,906 and 601,947.
Patent GB-542118-A (GB)
Title: Improvements in and relating to expulsion gaps for protecting electric circuits
IPC: H01T4/12
Filed: 1940-12-20
Abstract: 542,118. Protective spark gaps. BRITISH THOMSON-HOUSTON CO., Ltd. (Tokyo Shibaura Denki Kabushiki Kaisha). Dec. 20, 1940, No. 17945. [Class 38 (iv)] An expulsion spark gap for the protection of circuits against excess voltage comprises a pinshaped electrode 2 extending into and spaced from an inner insulating tube 8 of gas emitting material, such as fibre, within an outer tube 1 open at the end and carrying the second electrode 5 ; the " closed " end of the outer tube is provided with apertures 9 through which, on expulsion of the gases, air is drawn to cool the interior and de-ionize the arc. In the construction shown, the apertures are constituted by spaces between the outer tube and the end-cap 3.
Patent GB-1384124-A (GB)
Title: Bobbin thread replenishing mechanism in a sewing machine
Inventor: KETTERER S J
IPC: D05B59/00
Filed: 1972-04-18
Abstract: 1384124 Sewing; bobbin winding SINGER CO 18 April 1972 [23 April 1971] 17964/72 Heading D1G In a lock-stitch sewing machine a bobbin 95 is rewound using needle thread N which is guided from the reciprocating needle under the bobbin case 50 and through a thread tension bracket 82 (Fig. 12). A spring arm 62 holds the bobbin in the bobbin case 50 (Fig. 4) which itself is held in a rotary hook 28 but is prevented from rotating by the downturned ends on arms 56 and 64. To rewind, an arm 136 on a shaft 132 is moved clockwise across the bobbin (Fig. 6), and the shaft rotates a cam surface 128 into contact with the nose 128 of a stud 115 and raises it. The stud raises a bracket 112 which supports the rotating shaft 102, the top end of which 101 is thus brought into engagement with the bobbin. This bobbin driving shaft is driven through bevel gears 29, 30 from a bed shaft 22 (Fig. 1). When the machine is started the loop taking beak 42 seizes the needle loop as usual. A projection 143 on the arm 136 is so positioned as to direct the upper part of the thread N (Fig. 6) behind the tension spring 82. As the bobbin rotates this thread passes into a slot 97 in the upper flange of the bobbin and continued rotation of the bobbin winds it on. The thread loop on the beak has been drawn off it meanwhile, and the thread assumes the position shown in Fig. 12 as the bobbin takes up the slack. The top thread (Fig. 12) is severed by being repeatedly rubbed across an edge 160 of the arm 136 as the bobbin rotates. Passing the thread under the bobbin case is said to reduce the possibility of the rotating beak accidently seizing any slack which might form in the thread (Fig. 3, not shown).
Patent GB-403967-A (GB)
Title: Improvements relating to the filling of motor spirit and other containers
IPC: B60K15/04
Filed: 1932-06-25
Abstract: 403,967. Filling - opening for motor spirit containers &c. SWAN, T. M., Mid Colder, Midlothian. June 25, 1932, No. 17992. [Class 21.] Within the usual neck of a container for motor spirit and for powder &c. is provided a tilting tube which leaves a space for venting between itself and the inside of the neck, the usual cap being also provided. The neck A has a tilting tube B held by a disc C which is perforated. A similar disc may be provided at the bottom, and these discs may be in one with the inner and outer necks. The inner tube may be in contact with the neck the space between the two serving as vent. In this form the top disc may be reduced in size to leave half the neck open for venting, the filling tube being carried by the disc. The inner tube may also be central and connected with the neck by wings. The outer neck may also be elongated and bent. In another construction top and bottom disks are connected by a centrally arranged filling tube and vent tubes are arranged in a circle round it.
Patent GB-954446-A (GB)
Title: Improvements in regulated power supplies
Inventor: YOUNG GEORGE VIRGIL
IPC: G05F1/56
Filed: 1962-05-10
Abstract: 954,446. Automatic voltage or current control systems. ENDEVCO CORPORATION. May 10, 1962, No. 18002/62. Heading G3R. The output voltage at circuit terminals 9,10 is maintained constant by a control arrangement comprising a series transistor 24 controlled through an emitter-follower-connected transistor 23 from a differential amplifier employing transistors 14,15 which are matched to reduce errors caused by changes in their characteristics, e.g. due to temperature variations. A reference voltage for the amplifier is provided by a circuit comprising Zener diodes 17,18 and resistors 19, 20, and the base of transistor 15 is connected to the moving contact of output potentiometer 11, 12, 13 and to a resistor 26 which is connected to the unregulated supply comprising members 3, 6, 7, 8. The differential amplifier and transistors 23, 24 effect the major part of the regulating action which is completed by the presence of resistor 26, whose value is large compared to the base input impedance of transistor 15. In a modification to provide constant output current instead of voltage, potentiometer 11, 12, 13 is omitted and point B is connected to point C through a fixed and a variable resistor (in series), and to point A through the load, Fig. 2 (not shown). The resistor 26 may be omitted in which case the response to supply voltage change may be obtained as the characteristic for the regulated supply. Alternatively the value of resistor 26 may be altered to obtain a negative response characteristic to supply voltage variations. Modifications to the input portion of the circuit are described and the use of NPN transistors is discussed.
Patent GB-797801-A (GB)
Title: A new or improved trailer brake-operating unit
IPC: B60T13/58
Filed: 1953-06-30
Abstract: Dicalcium phosphate is obtained from phosphate rock containing rare earth compounds and fluorine compounds by reacting with 14-62 per cent sulphuric acid to obtain a solution containing monocalcium phosphate, fluorine and rare earth compounds, separating the precipitated calcium sulphate, adding calcium carbonate or lime before or after heating to 85 DEG  C. to give a P2O5 : Ca weight ratio of 10 : 1 to 4 : 1, allowing the solution to stand, if necessary, to insolubilize a fluorine-rare earth compound, separating said compound, if desired, and adding a further quantity of calcium carbonate or lime to precipitate dicalcium phosphate.  Preferably hydrated or another form of reactive silica is arranged to be present during the acid treatment: it is then not necessary for the solution to stand to precipitate the fluorine compound.  If necessary due to deficiency in the phosphate rock, a rare earth-containing ore such as monazite may be added prior to acidulation or a rare earth compound in solution may be added during or after acidulation, a sulphate e.g. calcium sulphate may be added to the solution from which the fluorine compound is precipitated, and sufficient calcium and aluminium to effect complete removal of the fluorine compound should also be present.  In the acidulation, preferably 80 per cent of the sulphuric acid necessary to convert the P2O5 content of the rock to H3PO4 is used. In an example details are given of a process using silica, and pH and other conditions are specified.  The fluorine-rare earth compound is stated to form octahedral crystals containing F (30 per cent), Ca (20 per cent), SO4 (15 per cent), Al (5 per cent), Si, Sr, water and rare earths, e.g. La and Y, and when monazite is added (v.s.) Ce and Yb were observed: Zr has also been found present.  The process thus provides a method for extracting rare earth from ores. It is stated that if the phosphate solution is cooled, the compound can be precipitated prior to the addition of any calcium compound if no silica is used in the acidulation. U.S.A. Specifications 1,809,473, 2,013,970 and 2,164,627 are referred to.
Patent GB-665706-A (GB)
Title: Improvements relating to endless conveyors for dealing continuously with materials in bulk
IPC: B65G17/02
Filed: 1949-07-08
Abstract: 665,706. Endless conveyers. MITCHELL, F. G. July 6,1950. [July 8, 1949] No. 18173/49. Class 78 (i). In a conveyer of the type wherein an endless load-carrying belt is supported during its conveying and return runs on an independently mounted endless carrier consisting of articulated wheeled frames, the carrier is turned from the conveying to the return run at each end without lateral deflection and the belt is laterally deflected at the ends of the runs and guided so as to enter or leave the gap between the upper and lower runs of the carrier, whereby each run of the belt is supported on the carrier. The carrier consists of frames 17 having a vertical pivot 23 at one end and an axle 18 at the other for articulation to the two ends of adjacent connecting pieces 20. The axle 18 carries wheels 19 which run on tracks 24 and 25, Fig. 6. Curved members 26 secured to the frames 17 support the upper run of the belt 18 to form a trough, whilst the lower run of the belt is supported on the axles 18 and undersides of the members 26. The carrier is driven by dogs 61 carried by a number of endless chains 60. At the ends of the run the carrier is passed in a large vertical loop so as to leave space for belt guiding rollers between The belt 13 may be deflected in a rectangular path, Fig. 8, or in a triangular path, Fig. 10. In Fig. 8, a reversing roller 35 and four pairs of deflecting rollers 37-44 are used, each pair twisting the belt between them so as to turn the belt through a right angle. The material on the upper run is discharged at 36. In Fig. 10. a reversing roller 51 and five deflecting rollers 52-56 are used, the belt being twisted between rollers 51 and 52, and again between rollers 54 and 55. Specifications 588,450 and 655,733 are referred to.
Patent GB-591904-A (GB)
Title: An improvement in or relating to the operation of weaving looms
IPC: D03D49/34
Filed: 1944-11-25
Abstract: 591,904. Hydraulic operation of looms. MORRIS & CO. (KIDDERMINSTER), Ltd., and DUTFIELD, N. F. Nov. 25, 1944, No. 18232. Drawings to Specification. [Classes 142 (i), 142 (ii) and 142 (iii)] Various mechanisms in a loom are each actuated by one or more hydraulic cylinders, each cylinder or group of cylinders having a separate control valve, and the valves being operated by a bank of cams which is itself operated hydraulically. In the carpet loom described, the shedding is performed directly by a number of cylinders, one for each shaft or pair of coupled shafts; the pile cutter is linked mechanically to the slay, which is directly operated by a cylinder; two weft inserting needles are operated by a cylinder, the stroke of which is multiplied by linkage to impart the required stroke to the needles; and a selvage shuttle and a selvage needle are operated by another cylinder. The control valves are operated by linear cam strips mounted in a frame which is reciprocated by a hydraulic cylinder through rack and pinion gearing. The frame carries two cam strips for each valve and is shifted laterally at each end of its stroke, so that one cam strip controls the valve on one stroke and the other strip on the return stroke.
Patent GB-192986-A (GB)
Title: Improvements in trolley heads for use in electric traction systems
IPC: B60L5/10
Filed: 1922-07-04
Abstract: 192,986. Mathers, E. E. July 4, 1922. Trolly heads; trolly pulleys. - Relates to pulleys with a spiral leading-in groove on each side of the central groove, and consists in providing spring gates a in the flanges b of the central groove. Each gate opens into the central groove and is returned by a flat spring flush with the inner faces of the gate and flange. The pulley has also integral discs d which are smaller than the flanges b and prevent the wire leaving the pulley. The Provisional Specification describes a trolly head in which a steel roller pin is inserted into the vertical pillar to restrict the movement of the pillar to 45‹ each side of the normal line. The lower part of the pillar is immersed in oil and rests on a steel ball in a case-hardened disc.
Patent GB-624823-A (GB)
Title: Improvements in driving or rear-view mirrors for motor vehicles
IPC: B60Q1/26
Filed: 1947-07-10
Abstract: 624,823. Lamps combined with other articles. HINDS, R. P. H. July 10, 1947, No. 18298. [Classes 75(iii) and 75(iv)] [Also in Group XXXII] A rear view mirror for a motor vehicle of the type in which a rear red and a forward white light are combined with the reflecting surface, comprises a mirror 15 supported at the rear of an oval casing 3 which is adjustably secured upon a tubular mounting arm 7 projecting through the side wall of the casing and extending rotatably through a transverse bore in a pivot pin 5 which projects freely through a bush 4 secured to the front wall of the casing 3, the arm 7 being clamped thereon by a nut 6. A tubular lamp 11 is mounted within the casing, the forward face thereof being provided with a transparent panel 14 whilst the mirror 15 is made transparent and coloured red at 15a. Current is supplied to the lamp 11 by an insulated conductor 13 passed through the mounting arm 7. Specification 571,756 is referred to.