baber/WOPTO huggingface dataset:
Patent GB-1011484-A (GB)
Title: Reflector device for increasing the usable luminous flux of fluorescent lamps
IPC: F21V7/04
Filed: 1962-05-18
Abstract: 1,011,484. Lamp reflectors. H. SCHMITT. May 18, 1962 [May 18, 1961], No. 19257/62. Heading F4R. A reflector for a cylindrical fluorescent lamp 2 comprises two part-cylindrical portions 4 which meet, the centres M 1  of the part-circles formed by a reflector cross-section lying inside the lamp and the radius R 1  of each of these circles being greater than the radius and smaller than the diameter of the lamp. The reflectors can be made of thermoplastics such as methylacrylates and polystyrene copolymers provided with totally reflecting coatings.
Patent GB-642916-A (GB)
Title: An improved apparatus for testing the balance of rotating bodies
IPC: G01M1/22
Filed: 1947-10-19
Abstract: 642,916. Electric indicating systems. AVERY, Ltd., W. & T., and BINNS, A. Oct. 19, 1947, No. 19369. [Class 40 (i)] [Also in Group XIX] Apparatus for testing the balance of rotating bodies comprises a two-phase generator adapted to be driven at the same speed as the body to be tested, either of the phase voltages of which can be selected by switch mechanism to be compared on a centre zero wattmeter with the phase voltage of a current generated by a pair of pick-ups operated by the unbalance oscillations of the test body, the current from the pick-ups being proportioned by means of a potentiometer to accord with the positions of pre-selected planes of correction on the body being tested. The body a to be tested is driven by a motor k, and is freely mounted on bearings b secured to the upper ends of flexible metal strips fixed to a slidable carriage. The oscillations of the bearings actuate pick-ups f, f <SP>1</SP> in the fields of permanent magnets, and the combined currents are supplied to a wattmeter j. Two-phase current, with phases at 90 and 270 degrees, generated by an alternator h coupled to the shaft of the body a, is also supplied to the wattmeter. With this twophase system, two readings are necessary at each end of the body a which are obtained by a multiple four-point switch comprising switch portions p<SP>1</SP>, p<SP>2</SP> and p<SP>3</SP>. The portions p<SP>2</SP>, p<SP>3</SP> control, respectively, the pick-ups f, f<SP>1</SP> and the portion p<SP>1</SP> the phase of the alternator h. Switches s, s<SP>1</SP> are for changing the polarity of the pick-up currents which is dependent upon the position of the node of oscillation of the body a. The current from the two pick-ups isproportioned by potentiometers r, r<SP>1</SP>. Variable resistances specially calibrated so that the meter will read in the desired units may be incorporated in the circuit. In operation, a standard balanced body similar to the body a is first placed in the machine. A weight is added to the right-hand end of the body which is then rotated, and the potentiometer r<SP>1</SP> adjusted for zero reading on the wattmeter. The weight is then removed and applied to the left-hand end of the body, and the potentiometer r adjusted for zero reading on the wattmeter. The test body a is now placed in the machine, and readings of the wattmeter noted for two positions at each end of the body. A disc q on the driving shaft n has four graduations - thereon at 90 degrees apart indicating the positions of correction for the test body.
Patent GB-690862-A (GB)
Title: Improvements in moisture ejector valve for a pressure fluid, that is air pressure, system
IPC: F16T1/14
Filed: 1949-07-22
Abstract: 690,862. Steam traps. BRUESTLE, C. O. July 22, 1949, No. 19377/49. Class 64 (ii) [Also in Groups XXVIII, XXIX and XXXIV] A moisture ejector valve for air pressure systems comprises a body with a cylinder at one end having a pressure supply and exhaust connection, an atmospheric moisture discharge port at the other end and a pair of spaced cylindrical seats between the cylinder and discharge ports, a pair of spaced connected pistons, a spring normally holding one piston on the seat farthest from the discharge port to form a closed space between the pistons and the other at the pressure and exhaust connection end of the cylinder, a pressure system connection to the closed space and valve means formed by one piston, actuated by the other piston, for allowing air pressure to eject moisture through the discharge port during the time the related piston is moving on to or away from the seat nearest the discharge port. The valve comprises a body having an end connection 5 through which pressure fluid is supplied or exhausted when a control valve of the system is actuated so that a piston 13 connected to a piston 15 moves against a spring 19, the piston 15 moving from a seat 16 to a seat in a cylinder 10 having a moisture discharge port 9 at the other end. During movement of the piston 15 air pressure from a storage tank sump passes from the lateral port 2 through the seat 16, round the piston 15 and a piston guide 17 sliding in the cylinder 10 to the discharge port and entrains moisture which collects in the pocket P. The piston 15 carries a wedge shaped stop 18. In a modification, a spring loaded ball check valve is placed in the port 2, and the piston extension comprises a closure for the discharge port. In a further modification the pistons are loaded by a spring adjacent the pressure and exhaust port and the piston 15 and guide 17 are reversed so that the piston seats in a short cylinder adjacent the discharge port.
Patent GB-193794-A (GB)
Abstract: 193,794. Clark, G. M., (Barrett, J. H.). Oct. 2, 1922. R÷ntgen-ray apparatus.-A method of localising a hidden object consists in determining the distance of the object from a primary screen tangential to the surface of the concealing body by observation of the displacements on this screen, and also on a secondary screen parallel to and at a known distance from the primary screen, of the shadows of the object cast by the X-ray source when this is moved from one position to another in a direction parallel to the screens. The method is illustrated in Fig. 3, wherein an X-ray tube 16 is first adjusted in position A to cast shadows at 17, 18 of a bubllet 12 in a body 10, upon two screens 14, 15 in a direction perpendicular to the screens, and is then moved laterally to B to displace these shadows to points 19, 20. With the rotation shown, the distance x of the bullet below the screen 14 is given by the formula x = ab/a-b. The apparatus described comprises a telescopic bracket 31, 33, Fig. 2, which may 'be clamped at 32 to a vertical support, and carries a rectangular horizontal frame 35 resting on levelling screws 36 and supporting a box 37 provided with crossed spirit levels. The box 37 has windows 43 of ruby or ground lead glass, and 45 of ruby glass or opaque material permeable to X-rays, such as aluminium, a fluorescent screen 44, grooves 46, 47 for photographic plates 48, 49, cross-wires 50, 51, and a plumb-line 52 depending from the intersection of the cross-wires 50. In use, the apparatus is adjusted over the body to be examined, and levelled so that the plumb-line hangs vertically above the intersection of the cross-wires 51', and by the aid of the fluorescent screen 44 the apparatus and an X-ray tube beneath the body are adjusted until the shadow of the bullet coincides with the cross-wires 50, 51. The apparatus is lowered until the cross-wires 51 (or a pointer 55 which may be slidden thereunder) touch the body, which is marked at the point of contact. The plates 48, 49 are inserted into the grooves 46, 47, and an exposure is made. The X-ray tube is then laterally displaced and a second exposure is made. The plates, after development furnish the data b, c, and the remaining distance a in the formula for x is the known distance between the plates 48, 49. The value of x may be determined on. the apparatus shown in Fig. 4, which is mounted on the top of the box 37, and comprises parallel scales 21, 22 at a distance a apart, secured at right angles to a scale 23 having pivoted extensions 24, 25, and a straight edge 28 pivoted to a block 30 slidable along the scale 21. The distance x is read off on scale 23 when the slide 30 is set on scale 21 to the distance c and the straight edge 28 is set on scale 22 to the distance b. In lieu of the supporting bracket 31, the frame 35 may be supported on a third levelling-screw similar to the screws 36.
Patent GB-656024-A (GB)
Title: Improvements in reels for taping heads for insulating cables
IPC: B65H75/24
Filed: 1948-07-22
Abstract: 656,024. Adjustable reels. SYNCRO MACHINE CO. July 22, 1948, No. 19643. [Class 120(iii)] [Also in Groups XVI and XXV] A tape reel for mounting on the taping head of a taping machine for electric cables comprises a shaft having at least three projecting pins and a pair of reel discs slidably mounted on the pins with means'for simultaneously adjusting the two discs towards and away from each other equally with respect to a fixed central plane between them. The outer disc can be quickly removed for applying a new tape roll, and a single locking-device is provided to hold the parts together. In the construction shown, the discs 63, 61, which are provided with reinforcing plates 64, 62, slide upon three pins 59 mounted on the rotating shaft 27, and their distance apart is controlled by a double-screwed rod 68 journalled at 69 in the hollow shaft 27. The rod is prevented from longitudinal movement by a disc 65 having apertures to receive the pins 59 and a snap ring 66 which engages in slots in the pins 59 and prevents the disc from sliding along the pins. A collar 71, pinned to the rod' 68, abuts against the disc 65 and prevents outward movement of the rod. The outer reinforcing plate 64 has a central hole and three slots 63<1>, Fig. 4, to enable it to slide off the pins and over the adjusting-mechanism, but is normally prevented from doing so by a three-pronged locking plate 73 slidable on the threaded portion of the rod 68 and held by a nut 74 screwed on the end of the rod 68 and prevented from turning by an arm 74<1> engaging a pin 77 carried by the disc 65. When the rod 68 is rotated by a handle applied to the squared end 70, the two discs 63, 61 travel towards each other from the extreme positions shown in Fig. 1 and their distances from the central plane between them remain equal. The disc 63 can be released for removal by turning the locking- plate 73 through 60 degrees by a finger pin 73<1>, whereupon the disc, its reinforcing plate, and the old tape core can be slid off the pins 59 leaving the adjusting-mechanism in position. The tape rolls normally have paper cores or sleeves which make a sliding fit on the pins 59, and when a new tape roll is slid into place it is given a slight rotational twist which causes eccentric cam rollers 67, Fig. 3, on the periphery of the disc 65 to grip the core and prevent the roll from turning independently of the reel structure.
Patent GB-474097-A (GB)
Title: Process for the purification of synthetic camphor
IPC: C07C49/437
Filed: 1936-07-15
Abstract: Synthetic camphor is purified by dissolving it in concentrated acetic acid and diluting with water to effect precipitation.  The contaminating borneol and compounds of the pinene group become esterified and remain in the residual liquid, from which the acetic acid can be recovered for further use.  Specification 8297/05, [Class 2], is referred to.
Patent GB-196997-A (GB)
Abstract: 196,997. Dixon, T. K., Cox, J. C., and Klein, A. Feb. 1, 1922. Shop fittings.-In a self-service store the goods are mounted in trays on endless carriers which are moved to provide access to one article &c., by means of a key. The key is carried by a registering device, in the form of a plug, the insertion thereof freeing the carrier mechanism for movement by the key, the turning of which also actuates the purchase-registering device. The framework 1 carries shelving 2, 3 provided with tracks for the trays which are mounted on chains 9 passing around end-sprockets 7, 8 on vertical shafts 5, 6. The shaft 5 is freed for rotation when the key 20 of a lock 19 on the spindle 18 is engaged in a lock 28 of the plug carrying the registering mechanism and the operating key 27. The key 27 and lock 28 are fitted at opposite ends of a shaft 26 extending across the casing 24 of the registering mechanism. A spur wheel 30 on the shaft 18 meshes with a similar wheel on a shaft 33 on which are mounted interchangeable adding segments 40 formed with gear teeth, the number of segments and of teeth in each segment corresponding to the purchase-prices. Adding wheels 42 - - 45 with their respective gears 47 - - 50 which mesh with the segments 40, are carried forward to correspond with the number of teeth on the segments 40, when the handle 27 is turned. Associated with each of the geared adding wheels 42 - - 45 and a transfer wheel 46 is a trip-cam 59 which, at the end of each revolution, engages a rocking-pawl 60. A lug 66 on the corresponding transfer lever 62 is thereby disengaged from the ledge 67 on the pawl, whereupon the lever 62 rocks into position to co-operate with a ratchet 65 on the succeeding adding wheel. Any levers 62 thus freed are actuated by cams 70 on the key-spindle 26. To prevent overthrow of the shaft 18 at the end of a complete revolution, a block 34 on the pinion 30 is tripped by the notched end 37 of a rocking-lever 36. The lever is normally held inoperative by means of a spring 39 but is rocked by the abutment of a stud 35 carried by the gear 33. The adding-wheels are normally locked by pawls 57 carried by rocking-levers 54 the other ends of which are formed with teeth 55 to engage notches 53 in cams 52 on the key-shaft 26.
Patent GB-852128-A (GB)
Title: Improvements in current supply circuits
IPC: G05F1/62
Filed: 1958-06-20
Abstract: 852,128. Automatic voltage and current control systems. WESTERN ELECTRIC CO. Inc. June 20, 1958 [June 21, 1957], No. 19808/58. Class 38 (4). An output from a rectifier supply 11 is fed to parallel-connected transistors 13, 14, each having a resistor 15 or 16 in series. The voltage difference between the negative terminals of the resistors affects an amplifier, comprising transistors 40, 41, controlling the base voltage of transistor 14, so as to maintain constant the relationship between the currents through the parallel-connected transistors. The base voltage on transistor 13 is controlled by an amplifier, comprising transistors 17-19, so as to maintain constant the voltage across a load 10. The load voltage is varied by a potentiometer 24. Reference voltages for the amplifiers are derived across Zener diodes 46, 21, 26, and a positive bias from a supply 34.
Patent GB-476157-A (GB)
Title: Improvements in grain separating machinery
IPC: B07B13/02
Filed: 1937-07-19
Abstract: 476,157. Separating solid materials. SIMON, Ltd., H. (Hart-Carter Co.) July 19, 1937, No. 19920. [Class 117] Apparatus for sorting material such as grain according to its smallest dimension, consists of a rotary drum formed on its inner surface with longitudinal grooves and ridges in combination with a trough disposed internally of the drum for collecting the products which are carried to the top of the drum by the grooves and discharged therein. As shown in the Figure, the grooves 8 have diverging sides, and the ridges 9 are formed by two converging inclined surfaces which begin at the top a of the groove walls.
Patent GB-368640-A (GB)
Title: Improvements in or relating to roller mills, particularly for cereals
IPC: B02C4/38
Filed: 1931-07-10
Abstract: 368,640. Roller mills. BUHLER GEB., Uzwil, Switzerland. July 10, 1931, No. 19940. Convention date, July 23, 1930. [Class 59.] A roller mill for cereals &c. is provided with a regulating device controlled by the feed of stock and is adapted to adjust continuously the number of revolutions of the grinding roll in accordance with the feed. A spring 1, Fig. 1, is suspended in a glass &c. feed chute 4 and is stretched by the flow of stock to the rolls 6, 7, the movement of the spring being communicated by crank 9, rod 11, crank 10 and rod 12 to a friction roller 13 in contact with discs 14 and through which the drive from a pulley 15 is communicated to the rolls in such manner that an increase in the flow of the feed through the chute causes a corresponding increase in the speed of the rolls. In Fig. 3, the feed impinges on a hinged plate 20 which is connected by a link pivoted at 24 to a feed plate 22 which controls the feed opening to the feed rolls 23. The feed plate 20 is connected by a lever 26 and link 27 to a rheostat 25 which controls the speed of a motor corresponding to 28 which drives the rolls 16, 17 through a belt 30 and gears 31. A hydraulic or pneumatic servomotor may be interposed between the control member and change-speed member. The position of a pointer 32 may indicate the output of the mill.
Patent GB-195586-A (GB)
Title: Improvements in or relating to copying-paper
IPC: B41M5/08
Filed: 1922-07-20
Abstract: 195,586. May, F. March 29, 1922, [Convention date]. Copying documents.-The long edges of rolledup webs of transparent copying-paper are impregnated with material insoluble in water in order to prevent the fibres of the paper from softening due to moisture, and, in the case of dry-copying rolls, to prevent the edges from adhering together. The material is applied to dry-copying rolls before the application of the fluid which maintains the paper damp. Reference has been directed by the Comptroller to Specifications 2082/77 and 7099/11, [Class 16, Books &c.].
Patent GB-1343701-A (GB)
Title: Method of and apparatus for detecting and compensating for defects in the rolls of a rolling mill
IPC: B21B37/66
Filed: 1971-06-10
Abstract: 1343701 Rolling mills SECIM 10 June 1971 [12 June 1970] 20000/71 Heading B3M Any irregularities or defects in the rolls of a mill are recorded by operating the mill under noload, and are then fed back into the mill during normal operation in a sense to eliminate the defects. The defects are measured by sensing the hydraulic pressure in jacks 7 during rotation of the working and backing rolls of the mill. Changes in pressure are picked up by sensors 15, added at 16 and recorded, the signals being in analogue or digital form. The resulting recording can be used to compensate for defects in both the working and backing rolls. The jacks 7 may be independent of the normal fluid pressure system of the mill or may serve as balancing jacks for the mill; in the latter ease, they are isolated by valves 11 during the recording process.
Patent GB-1522075-A (GB)
Title: Multipane anti-bandit glazing unit
IPC: E06B5/10
Filed: 1976-05-14
Abstract: The intruder-proof action is to be improved and the production costs reduced. A sheet of laminated safety glass (14) is arranged at a distance behind the first sheet (10), which is from 6 to 20 mm thick. In this laminated sheet, individual glass sheets (16, 18, 20) are bonded to one another by multilayer plastic films (22, 24) at least 1 mm thick; the sheet facing the gap (12) between the sheets is at least 5 mm thick; the other sheets have a thickness which decreases in steps on moving towards the sheet (16) facing away from the gap. <IMAGE>
Patent GB-299798-A (GB)
Title: Improvements in or relating to hydraulic shock absorbers
IPC: F16F9/14
Filed: 1927-07-28
Abstract: 299,798. Houdaille, M. July 28, 1927. Fluid-friction vibrationdampers.-In apparatus of the oscillating radialpartition type, the two chambers on opposite sides of the movable partition are connected by two separate conduits one of which has a oneway valve, means being provided for adjusting both conduits so that the ratio between the passage areas remains constant. The fixed partitions 14 and movable vanes 32, 33 are arranged inside a cylindrical casing 1, Figs. 1 and 3, having a screwed-in cover 67 with a cylindrical extension forming a bearing for the spindle 38 carrying at its outer end the operating-arms 42 and at its inner end the two movable vanes shown also in Fig. 10. The spindle 38 also bears on a cylindrical projection 2a from the casing 1. The fixed partitions 14 are integral with a ring pad 15 which fits over the projection 2<a> and their outer ends engage recesses in the casing. The compartments on opposite sides of the fixed partitions are connected by passages 23, 24 of constant size which include grooves in the ends of the partitions abutting the cover 67. The compartment on opposite sides of the movable vanes 32, 33 are connected by passages, the areas of which are varied as desired, a differential action being obtained by ball valves in passages 47, 48 which communicate through the recess 46 with radial passages 55 - - 58, each leading to one of the compartments A - - D. The flow to and from the radial passages is controlled by a conical member 104 having longitudinal saw cuts so that it may be expanded radially by a ball 109 which is subject to longitudinal thrust from the central spindle 110 adjustable from the outside. The outer curved parts of the movable vanes are formed with longitudinal grooves to reduce leakage and the edges of the vanes, with the exception of the middle parts, are clamped at 61 - - 64, so as to ensure that the compartments A - - D always communicate with one-way ball valves through which leakage of oil may be made up from the reservoir formed by the light cover 87. The upper ball valve 76 is formed with fine grooves on its seat to allow escape of air but prevent the passage of oil. Leakage oil along the outside of the spindle 38 is collected in the groove 84 and led into the reservoir or into troughs adapted to cover the ball valves communicating with the compartments. The shutter may be provided with inclined or other ports 160 and with one-way spring flap valve 159 having openings not connecting with the port, one example being shown in Fig. 22.
Patent GB-1344363-A (GB)
Title: Swim fins
IPC: A63B31/11
Filed: 1971-04-19
Abstract: 1344363 Swim-fins NEMROD METZELERSA 19 April 1971 [8 April 1970] 20297/71 Heading A6D A swim fin has ducts 7 leading from an inlet 9 to outlets 11 of greater cross-sectional area than the inlet. There may be more than one inlet provided and an inlet may be on the bottom rather than the top of the web of the fin. Ribs 5 and 6 are provided to strengthen the fin and direct the flow of water. The ducts 7 may be incorporated in the lateral ribs 6.
Patent GB-889900-A (GB)
Title: Improvements in or relating to the mounting of load bearing balls
Inventor: TOWNSEND CLAUDE MORTIMER
IPC: F16C19/12
Filed: 1959-06-13
Abstract: 889,900. Rectilinear-motion bearings. AUTOSET (PRODUCTION) Ltd. Sept. 13, 1960 [June 13, 1959], No. 20322/59. Addition to 856,745. Class 12 (1). In a bearing of the ball-castor type, a loadcarrying ball 10 is supported by ball-bearings 16 in an endless track formed between a hemispherical partition 13 having arcuate concave and convex surfaces 14, 15, and the inner surface of a mounting 7, and means are provided for scraping the periphery of the load ball. The balls may circulate both surfaces 14, 15 of the partition 13, Fig. 1, alternatively surface 14 only is engaged, Fig. 2; and a guide 28a facilitates the circulation of the balls. The partition 13 has a central spigot 19 engaging a socket 17 of a castor peg 18 which, having external flanges 20, 21 is secured to a mounting 7 having an internal flange 22, a washer 23 being interposed between the flanges. A scraper 24 is attached to the mouth 8 of the mounting 7 and has a lip 25 engaging the ball 10. The spigot and socket rocking means 19, 17, Fig. 1, may be replaced by a ball 26, Fig. 2, which engages recesses in the peg 18 and partition 13 ; alternatively, as shown in Fig. 3, a ball race 29 is positioned between the partition 13 and the inner surface of the mounting 7. A sealing ring 33, Fig. 5, is located in the mouth of the mounting 7.