baber/WOPTO huggingface dataset:
Patent GB-433162-A (GB)
Title: Improvements in and relating to electric control systems
IPC: G05F1/34
Filed: 1934-03-19
Abstract: 433,162. Control systems for consuming devices; automatic regulation. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. March 19, 1934, No. 8601. Convention date, March 18, 1933. [Class 38 (iv)] A control system for a load circuit the current in which is controlled by a variable control voltage operating upon the saturating winding of a reactance in series with it, comprises regulating means influenced by a voltage derived from the load circuit to maintain the latter at a substantially constant relation to the control voltage. The load circuit 10 is connected in series with the winding 13<a> of a variable impedance 13 of the saturable core type, the direct current winding 13b being connected through rectifiers 14, 15 to the secondary winding of a transformer 16. The primary winding of the transformer is fed from the supply lines 11, 12, and is in series with the reactive winding of a saturable core reactance 17. The control winding 17<a> is connected between the supply line 11 and the anode 18b of a valve 18, the. cathode 18<a> of which is connected to the supply line 12. A source of variable voltage comprising solenoids 20, 21 with movable core members, has a common point 22 connected through a rectifier to the circuit of the grid 18<c> of the valve 18. The grid circuit is also connected to the load circuit through a feed back transformer 26. The feed back voltage is opposite to the polarity of the voltage supplied from the connection 22 so that the voltages of the load and the common connection 22 equalize themselves irrespective of the current (e.g. number of lamps), in the load circuit. In Fig. 2 the common point 45 of the variable voltage device is connected through a rectifying bridge 44 to the direct current winding 43<a> of the reactance 43, the reactance winding of which is fed through a rectifying bridge 42 and winding 41<b> from the supply lines 38, 40. The reactance winding 41<a> of the device 41 is in series with the primary of the transformer 37 and is connected in parallel with a further reactance 46, the D.C. winding of which is fed by the voltage across the reactance 32 which is in series with the load. Should a portion of the lamps in the load circuit burn out so that the voltage across the load circuit is increased, the voltage across the winding 32<a> will decrease. This will result in an increase in the voltage drop across the winding 46<a> and a decrease in the voltage across the transformer 37. The consequent decrease in the current through the rectifiers 33, 34 will increase the reactance of the device 32<a> and automatically restore the voltage across the load circuit 31 to its original value.
Patent GB-740044-A (GB)
Title: Improvements relating to suction pumps
IPC: A61M1/00
Filed: 1954-03-24
Abstract: 740,044. Suction pumps. FRASER, R. P. March 24, 1954, No. 8612/54. Class 8(1). A suction pump comprises an outer telescopic casing 1, 2 having a head 3 and an outlet valve 4, and ar inner casing 5 having a head 6 and an inlet valve 7, the casings being secured to a top plate 12 of a reservoir 8 the other parts 11, 13 of which are clamped against a seal 14 in the plate 12 by studs 15. A bellows 10 is secured at the top to the head 3 and is clamped against a seal 18 in the plate 12 by the casing 2 and a plate 19. A spring 9 is disposed between the plate 12 and the head 3. A replaceable gauze filter 21 is fitted into the casing 5.
Patent GB-118129-A (GB)
Title: Improvements in or relating to Methods of Softening Abrasive Sheet Material for use in the Manufacture of Boots or Shoes and to Machines therefor.
Inventor: WADE HAROLD
IPC: C14B1/40
Filed: 1917-06-15
Abstract: 118,129. Wade, H., (Naumkeag Buffing Machine Co.). June 15, 1917. Breaking or softening.- Emery cloth or other abrasive sheet material is softened by causing a series of waves to travel transversely of the material, while subjected to longitudinal tension, by the action thereon of a rotating roller provided with a projecting helix. As shown, the material is drawn from a roll 7, Figs. 1 and 2, mounted between coned disks 207, which are rotatably mounted on a fixed spindle 17 and are acted upon by friction washers 21 and non-rotatable disks 19, one of which is pressed by a spring 23 adjusted by a hand. wheel 25. The material passes over and under idle rolls 11, around the softening-tool 13 and a guide-member 15, and back under further idle rolls 11 to a winding-roller 9, which has a slot to receive the end of the material or a cloth attached thereto and is driven by the ordinary back gearing of a lathe and a belt 27. The tool 13 is mounted in bearings in curved standards 63, is driven by a belt 67 at a greater speed than and in the opposite direction to the travel of the material, and in one form comprises a roller of small diameter having wound thereon two wire helices 57, Fig. 4, set into a tapered block 85 at the centre of the roller and extending in opposite directions at a pitch greater than the diameter of the roller to sleeves 59 at its ends. The sleeves are grooved to receive the helices, and may be adjusted and secured by set-screws 61 to extend a short distance under the edges of the material and support them so that they are not turned in or broken. The various rolls and members are mounted so that they may readily be adjusted and removed, and, for this purpose, the rolls 9, 11 and the member 15 are mounted in bearings held between pivot screws 29 in yokes 31, the stems of which are held in adjusted vertical position in socket members 33 by screw-bolts 35. The socket members are fast to or inetgral with slides 37 held in adjusted position in guideway blocks 39 by plates 41 and screws 43. Guideways on the under sides of the blocks 39 receive ribs 45, Fig. 3, on slotted supports 47, and handwheels 53 on bolts 51 depending from the blocks 39 engage plates 55 to clamp the blocks in their adjusted positions. The curved standards 63 and the socket members of forked supports for the spindle 17 are secured to similar slides 37, and the bearings of the forward roll 11 are fastened directly to plates 41. Adjustment of the member 15 controls the area of contact of the material with the tool 13. A modified form of softening- device comprises two separately driven rollers, one with a right-hand helix and the other with a left-hand helix so that waves are caused to travel first in one direction and then in the other across the material.
Patent GB-234244-A (GB)
Title: Improvements relating to windows
IPC: E06B3/50
Filed: 1924-04-07
Abstract: 234,244. Robertson, A. April 7, 1924. Sashes balanced by springs; hinged-sliding windows.-The lower sash is of the hingedsliding kind and is over-balanced by two springs 6 acting on guided plungers 7 provided with lugs 10 engaging recesses in the sash, and is adapted to hinge inwardly bv means of sockets 15 engaging fixed rods 13. A part of the stop bead opposite the hinges is hinged to allow rotation of the sash. The sash is retained in the closed position by a pivoted catch 17 which engages a projection or stud 16 on the upper rod 13. The socket 15 is slotted for the passage of the stud. During the hinging movement, the sash is supported by the stud 16. In a modification, the hinges con. sist of a slotted socket and a spigot attached to the sash by a neck portion sliding in the slot. An enlarged opening in the sides of the slot receives the neck portion of the spigot during the hinging movement of the sash. A catch plate having flanged ends to engage the socket is mounted in a slot in the spigot and spring-pressed outwardly to engage the ends of the socket. The catch plate is released by hand when the window is to be lowered. The balancing spring may be combined with the hinge.
Patent GB-1427561-A (GB)
Title: Gaseous discharge display panels
IPC: G09G3/28
Filed: 1973-02-22
Abstract: 1427561 Matrix displays and circuits therefor OWENS-ILLINOIS Inc 22 Feb 1973 [23 Feb 1972] 8678/73 Heading G5C Display apparatus comprises a gas discharge display/memory panel with crossed conductor arrays insulated from the gas and means to apply sustain, write and erase voltages V S , V pW , V PE  comprising a sustainer generator operable to supply two voltages of differing amplitudes both below the write voltage the lower amplitude voltage acting as a pedestal for write and erase pulses and being adjustable to obtain the greatest operating "window"  for the panel. The pedestals for write and erase pulses (V S -W PD ), (V S -E PD ) are different thereby reducing errors caused by variations in the characteristics of individual cells. Square wave generators described in Specification 1,420,098 are used including means to adjust the pedestal voltages by varying W PD  and E PD .
Patent GB-526507-A (GB)
Title: Improvements in condensation vacuum pumps
IPC: F04F9/00
Filed: 1939-03-18
Abstract: 526,507. Condensation vacuum pumps. BANCROFT, F. E., MILLER, C. W., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. March 18, 1939, No. 8681. [Class 71] In a condensation vacuum pump for operation with a liquid having a vapour pressure considerably lower than that of mercury, the vapour reception space between the let and the forevacuum pipe, in the case of a single let pump, or between the lowermost jet 6 and the fore-vacuum pipe 10, in the case of a multi-jet pump, as shown, is restricted by a baffle 12 between the hot vapour uptake pipe 3 and the condenser surface 8. The baffle 12 and the pins 15 or other means supporting it may be of a material of relatively low thermal conductivity, and its end 14 may be flared and extend below the fore-vacuum pipe 10. The pump may have a liner 11, as described in Specification 523,688, the entry mouth 16 of the liner having an increased flare. The invention may be applied to the pump described in Specification 346,293. in which case the baffles which are secured to the uptake pipe below the fore-vacuum pipe may be omitted.
Patent GB-492449-A (GB)
Title: Improvements in the manufacture and production of cellulosic materials with improved crease-resisting properties
IPC: D06M11/82
Filed: 1937-03-24
Abstract: Cellulosic fabrics and yarns are rendered crease-resisting by impregnating with a borate and a fatty lubricant, removing excess impregnant and drying at raised temperature.  The borate if of the insoluble class, may be formed in situ by first impregnating with a solution of a soluble borate and then with a metal salt. The fatty lubricant may be applied in non-aqueous solution to the fabric already treated with the borate, or it may be applied simultaneously with the borate as a fine emulsion or a colloidal solution.  Suitable lubricants contain at least one chain having 8 or more carbon atoms, and may be an aliphatic hydrocarbon, alcohol, carboxylic acid or salt thereof, ester, glyceride, sulphonic acid or salt thereof, amine or amide; or mixtures thereof.  In an example, a viscose fabric is impregnated with a hot solution of borax containing a soap-stabilized emulsion of vegetable oils, and dried in hot air whilst stretched.
Patent GB-1408213-A (GB)
Title: Hinge fittings for seats with adjustable back-rests
IPC: B60N2/235
Filed: 1973-02-22
Abstract: 1408213 Adjustable seat mechanisms F KEIPER 22 Feb 1973 [22 Feb 1972] 8698/73 Addition to 1347663 Heading E2F [Also in Division A4] A hinge 10 comprises a part 12, to be attached to a seat, connected by a pivot pin 14 to a part 13 to be attached to an adjustable backrest, and locking means comprising toothed portions 15, 16 coupled to respective hinge parts, and a handle 43 controlling operating means comprising a first operating element 19 for moving the toothed portion 16 into engagement with the portion 15 and a second operating element 20 for moving it out of engagement, the elements being pivoted at 14, 23 and connected by a link 28, the element 20 being further connected by a link 35 to a crank 38 on a coupling member 39 rotatable about an axis parallel to or coincident with that of the pivot pin 14. The axis of the member 39 is preferably the same as that of the pin 14, and the member has a non-circular opening which can receive an end of a shaft (42), Fig 1 (not shown) for coupling the hinge 10 to a hinge (11), at the other side of the seat, which is similar but lacks a control handle 43. The operating elements 19, 20 have respective cam surfaces 22, 25 which engage a stud 26 on the toothed portion 16, and two springs 50 act on the links 28 and 35 to urge the toothed portions together to lock the backrest. The connection between the link 35 of the hinge 10 and the crank 38 includes a pin and slot connection 37, 36 so that the toothed portions 16 of the hinges 10, (11) may return to the locking position independently on release of the lever 43. A spring 53 biases the backrest forwards when it is unlocked.
Patent GB-1553054-A (GB)
Title: Variable magnification lens
IPC: G02B17/00
Filed: 1977-03-02
Abstract: The lens is built up symmetrically from six elements, the outer elements (4, 14) being fixed and the inner elements (6, 8; 10, 12), which are connected in pairs, being displaceable symmetrically relative to one another along the optical axis (16) for the purpose of varying the focal length. The parameters of the elements are selected such that the image field remains virtually plane over the entire range of the focal length. The rear half of the lens can be replaced by a plane mirror, thus producing a mirror lens having the same properties as the said six-member lens. The two lenses are used, in particular, in the production of photocopiers. <IMAGE>
Patent GB-495543-A (GB)
Title: Improvements in or relating to broach locking device
IPC: B23D41/04
Filed: 1938-03-22
Abstract: 495,543. Broaching machines. LAPOINTE MACHINE TOOL CO., Ltd. (Lapointe Machine Tool Co.) March 22, 1938, No. 8797 [Class 83 (iii)] A pull broaching-machine has automatic means for withdrawing the broach-locking key 16 at the end of the working stroke and manual means to restore the key at the beginning of the next working stroke. The key passes through slots in the pull socket 12 and in the broach B and is connected by a link 22, pivoted lever 20 and adjustable link 24, to a three armed lever 25 pivoted at 27 to the pull-head. At the end of the downward working stroke a head 29 on the lever arm 28 engages a fixed collar 30 and rocks the lever so as to withdraw the key the movement being assisted by a spring toggle link 38. After the return of the pull head and broach and the insertion of a fresh work piece a hand lever 32 pivoted at 33 is raised thereby causing the part 34 of the lever to depress the head 29 and restore the key to the locked position shown in Fig. 1. The broaching machine may be as described in Specification 484,759.
Patent GB-1037770-A (GB)
Title: Process and apparatus for comminuting oversized particles
Inventor: WALLACE CURTIS CLAYTON
IPC: B02C19/06
Filed: 1965-03-02
Abstract: 1,037,770. Ejectors. E. I. DU PONT DE NEMOURS & CO. March 2, 1965, No. 8856/65. Heading F1E. [Also in Division B2] An ejector nozzle has inlet bore, throat bore and exit bore portions of circular crosssection, the diameter of the throat bore being about one third that of the inlet bore, the taper angle between the wall of the exit bore portion and the axis of the exit bore portion being from 2 degrees to 14 degrees, the exit bore portion having a truncated exit face the plane of which makes an angle # of from 19 degrees to 42 degrees with a plane perpendicular to the axis of the outlet bore portion and the truncated exit face having an inset face extending out from the discharge opening a distance of from ¢ to 3 radii of the opening, the opening defined by the inset face tapering outwardly at an angle of at least 6 degrees from the axis of the outlet bore portion.
Patent GB-548773-A (GB)
Title: Improvements in furnace fire-bars and grates
IPC: F23H17/12
Filed: 1941-07-17
Abstract: 548,773. Furnace grates. CALDWELL, T. C. July 17, 1941, No. 9053. [Class 51 (i)] A furnace grate is formed of a number of parallel longitudinally or transversely extending firebars a each having mounted thereon a series of short straight bars b arranged at an angle to the bars a, the short bars of adjacent bars a forming a herring bone pattern. One or more short bars may be extended as shown at d to act as spacing members.
Patent GB-181846-A (GB)
Title: Improvements in or relating to circular knitting machines
IPC: D04B9/30
Filed: 1921-03-24
Abstract: 181,846. Wildt & Co., Ltd., and Wildt, E. March 24, 1921. Circular machines.-Vertically striped or spotted effects are obtained on a machine with stationary needle cylinder by the use of two threads one of which can be withheld from certain needles by the action of a pattern-controlled cam 2 which is movable both horizontally and vertically and depresses these needles so that they miss the yarn not required for striping. The striping needles have butts of different lengths and/or different positions. The cam 2 is mounted for vertical movement into or out of action on a slide 3 movable horizontally in a bracket 4 secured to the rotary cam box 1, and' is attached to a spring-pressed vertical plunger 5. A horizontally slidable plate 7, a shoulder on which engages a vertically movable pivoted arm 9 carrying a roller 11, moves the cam 2 vertically downwards, the plate 7 being pressed inwards by passage in contact with a cam-plate 13. The plate 13 can be placed in two positions by means of connections such as 17 operated from a pattern chain 18. The higher position allows the plate 13 to act on the plate 7 and depress the cam 2 and when in the lower position the plate 13 releases the plate 7 and cam 2 from engagement with locking catches. The horizontal movement ot the cam 2 is derived from the chain 18 by means of connections such as 25 which place a cam-plate 24 similar to the cam-plate. 13 in the path of the slide 3.
Patent GB-513122-A (GB)
Title: Improvements relating to pianos
IPC: G10C3/02
Filed: 1938-03-25
Abstract: 513,122. Music rests for pianofortes. FRIPP, S. T. March 25, 1938. Nos. 9115, 10401 and 12594. [Class 52 (iii)] A music rest for a pianoforte consists of a hinged portion of the case itself and a strip light is provided at or near its lower end. In Fig. 3 a part 11 of the top 10, 12 of the case is hinged at 13 and maintained in an inclined position by struts 14. A beading 15 forms an abutment for the music and carries a strip light 16. According to the first Provisional Specification the beading and light may be carried by the rest itself. In a modification the part 11 is slidably and hingedly mounted so that the front face of the rest is underneath when the part 11 is not in use as a music rest. In a further modification a part of the front of an upright pianoforte is turned down to form the rest which carries a ledge with a strip light.
Patent GB-139918-A (GB)
Title: Improvements relating to shelves for books and other articles
IPC: A47B63/06
Filed: 1919-04-10
Abstract: 139,918. Preen, H., and Smith, M. H. April 10, 1919. Endless-belt conveyers with shelf carriers; guiding endless belts and carriers; carriers and receptacles, attaching to belts.-In book-cases &c. of the kind comprising shelves &c. arranged on a travelling band by which they can be moved in a vertical plane to bring them into a position of accessibility, end members a of the shelves are pivotally mounted on triangular brackets d pivoted at one corner f of their bases to a band &c. c passing over wheels b. The pivots f and also pins g which are not secured to the bands have rollers h mounted thereon which travel in tracks i. The wheels b have notches to engage the pins f, g and studs n on the bands. The pivots f and studs n are secured as shown in Fig. II by a plate o and rivets. Pins x on the shelves may engage channels w to guide the shelves.
Patent GB-289007-A (GB)
Title: Improvements in method and apparatus for furnace treatment of metal and metalliferous material
IPC: F27B1/08
Filed: 1928-03-26
Abstract: 289,007. American Radiator Co., (Assignees of Meloche, D. H.). April 19, 1927, [Convention date]. Cupola furnaces.-In the furnace treatment of metals and metalliferous materials, powdered coal or coke is burnt to produce non-oxidizing gases in a combustion chamber external to the charge receiving chamber, and the resulting combustion products are passed upwards through a bed of loose lump material, such as coke or broken brick, which supports the charge. In the cupola furnace shown each of the four inclined combustion chambers 7 opening into the lower part of the shaft 3<a> is fed from a main 20 with a mixture of powdered fuel and air, the supply being delivered through the nozzle 19 and inlet connection 14, while secondary air is admitted from the wind-box 22 and connection 21. The combustion chamber is lined with refractory material, and may have a cooling-jacket 9. By controlling the supplies of fuel and air reducing or neutral gases can be passed to the cupola. The bed 24 of broken material is supported on a sand bottom 23. In the Specification as open to inspection under Sect. 91 (3) (a) it is stated that air and gas may be used us fuel, and that combustion may be effected to produce oxidizing gases. This subjectmatter does not appear in the Specification as accepted.
Patent GB-326366-A (GB)
Title: Improved method of fine grinding of bry material
IPC: B02C19/00
Filed: 1929-03-21
Abstract: 326,366. Pontoppidan, C. March 21, 1929. Breaking apart adhering particles; systems for reducing cements.-Adhesion of material, such as cement or raw materials used in cement manufacture, to the surface of grinding bodies during fine grinding is decreased by adding to the material being ground one or more substances which, by reason of the friction against the grinding bodies, produce an electrical potential difference to reduce the electrical potential difference similarly produced between the material and the grinding bodies. Solid metallic or non-metallic and gaseous substances or mixtures of substances may be used. Specification 283,091 is referred to.
Patent GB-598288-A (GB)
Title: Improvements in or relating to tuning control mechanism for high frequency electric tube structures
IPC: H01P7/06
Filed: 1942-07-03
Abstract: <PICT:0598288/III/1> In the conversion of hydrocarbon oils the vapours are passed through a conversion zone with finely divided catalyst under such conditions that part of the catalyst is suspended and is withdrawn with the reaction products, and a substantial portion of the catalyst remains in the reaction zone for a considerably longer time than the vapours and is withdrawn from the bottom of the conversion zone.  The vapours preferably remain in the reaction zone for 10-50 seconds and the catalyst for 15 seconds to 30 minutes; the catalyst is preferably 200-400 mesh and the vapour velocity 0.1-10 feet per second.  In the illustrated embodiment, catalyst from hopper 69 is suspended in inert gas from pipe 71 and mixed with hydrocarbon vapours from pipe 10.  The suspension is passed through pipe 12 to converter 13, and a further supply of vapour may be admitted at 51.  Suspended catalyst is separated from the reaction products in cyclones 52 and 112, and may be returned to the reactor or treated in a stripping chamber 22, from which it passes through a depressuring chamber 29 to a hopper 33. It may be suspended in inert gas and passed into a conical regenerating chamber 45, to which a suitably cooled oxidising gas is admitted in stages through pipes 58-60.  In this step also the catalyst may remain for a considerably longer time than the gas in which it is suspended.  The regenerated catalyst is separated from the combustion products in cyclones and passed through a stripping chamber similar to the chamber 22, and thence to a hopper 69 from which it is returned to the cyclone.  For cracking oils the conversion zone may be maintained at 600-1200 DEG F. and up to 50 lbs. pressure.  The hydroforming of gasoline fractions is also described, at temperatures of 800-1050 DEG F. and pressures of 50-750 lb., a gas containing 40-70 per cent. of hydrogen being added to the reactant.