baber/WOPTO huggingface dataset:
Patent GB-498882-A (GB)
Title: Improvements in and relating to hot air power plant
IPC: F02G1/02
Filed: 1937-07-13
Abstract: 498,882. Hot-air engines and plant. BRUCE, J. S. July 13, 1937, No. 19408. [Class 7 (i)] A hot-air power plant is of the kind in which air is compressed in the power cylinder or cylinders a or in an enginedriven compressor c and is heated in external air-heating apparatus g, and in which the expanded air exhausted from the engine is utilized to support the combustion of the fuel used in the air heater, and to control the temperature of the heating gases. A heat exchanger k provided in the air heater enables the exhaust air from the engine, before being used to support combustion and to control the temperature in the air heater, to be preheated by the waste gases from the air-heating chamber of the apparatus after they have been used to heat the working air. In the form shown, the plant comprises two-stroke double-acting power cylinders a, with chambers b housing mechanically actuated inlet and exhaust valves, and engine-driven compressors comprising lowpressure cylinders c and high-pressure cylinders c<1>, each double-acting, with automatic or mechanically actuated valves. The cylinders c are water-cooled and an intercooler c2 is provided. High-pressure air from cylinders c<1> is led through pipes f and a reservoir f<2> to coils g<2> in the heater g, and thence through a pipe g<4> and branches g<7> to the engine. Exhaust air from the engine is conveyed by branch pipes j to a valve j<2>, which allows part of the air to escape through a pipe j<3> to the atmosphere or to the heating apparatus of a building or ship, while the remainder is led by pipes j<5> through the heat exchanger k and thence through pipes j<6> to the combustion chamber n of the heater. A portion of this air is conveyed by branch pipes j<7> to the oil burners m to provide primary air for combustion. Doors n<2>, n<3> for diverting the hot gases from the chamber n through a pipe n<4> to the atmosphere may be operated by a hand wheel on a vertical shaft serving also to operate a control valve g<5> in the air pipe g4, a fuel-supply valve h<8> for the air heater, and a valve connecting the reservoir f<2> to an independent air compressor for starting purposes. In modifications, (1) the independent compressor cylinders c, c<1> are dispensed with, the air being compressed in the power cylinders, which work on a four-stroke cycle; (2) compressor and power cylinders are arranged in tandem and are provided with piston valves, the power pistons and their valves working with clearance while the compressor pistons and their valves are close-fitting ; the cylinder covers and glands are cooled by exhaust air or other cooling fluid. The Provisional Specification states also that the exhaust air from the engine may be used to heat the combustion air for the hot-air generator.
Patent GB-436249-A (GB)
Title: Improvements in and relating to electric regulating systems
IPC: H05B41/392
Filed: 1934-07-02
Abstract: 436,249. Automatic regulation. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. July 2, 1934, No. 19493. Convention date, July 1, 1933. [Classes 38 (ii) and 38 (iv)] The current to a load having a negative volt-ampere characteristic is supplied and maintained constant through an arrangement comprising a pair of electric valves having discontinuous grid control and means to apply to the grid of each valve when non- conducting, superimposed upon a constant positive bias, a negative potential dependent in amplitude upon the load current. The gaseous discharge lamps 10, 11, 12, 13, are supplied from a source 14 through the supply transformer 18, a smoothing reactor 20, and a pair of electric valves 21, 22. A resistance 23 is also included in the system, its mid point being connected to the tubes 10-13. The primary winding of a transformer 25 is connected across the resistance 23, and its secondary winding has its ends connected through current limiting resisters 24 to the grids of the discharge valves. A capacitor 27 is connected across the secondary of the transformer 25, a positive bias potential is produced across a capacitor 26 in the grid circuit from a tertiary winding 28 of the transformer 18 a potentiometer 29 and a rectifying bridge 30. If for example, the load current tends to increase, the moment in each half cycle when either of the grids becomes positive is delayed, and the delay in the starting of the conduction of the tube automatically reduces the average value of the current. In a modification shown in Fig. 3, the alternating component of control potential is provided by a resister 23a energized by a current transformer 32, and amplified variations are produced in the positive bias potential. The positive bias capacitor 26 is energized from the circuit 14 through a rectifier bridge 30 and a transformer 33, and a saturable reactance device 34 is connected across the A.C. side of the rectifier 30. The saturating winding 35 is supplied through a rectifier bridge 39 from a parallel circuit comprising a resister 36 and reactor 37 connected in parallel with a capacitor 38, fed from the current transformer 32. The reactor 37 is self saturating and relatively small variations in load current produce large variations in potential across the saturating winding of the reactance device 34 and effects variations in the positive bias potential. Reference has been directed by the Comptroller to Specifications 362,364 and 370,405.
Patent GB-740648-A (GB)
Title: Improvements in or relating to display equipment
Inventor: KAYE DAVID
IPC: A47F7/14
Filed: 1953-07-14
Abstract: 740,648. Spring clips. KAYE-KARDS, Ltd. June 29, 1954 [July 14, 1953], No. 19523/53. Class 44. [Also in Groups XV and XVIII] A sorting and designating device for sorted greeting cards or like articles of stationery displayed in laterally elongated racks in a substantially upright position so as to be wholly or partly visible, comprises a divider member arranged to extend in a substantially vertical plane transversely of the rack and movable therealong and a supporting member secured to and arranged to support the divider member in position on the rack, either the divider member or its supporting member including a surface displaying or receiving means for displaying a designating symbol, whereby such device serves to segregate the articles in the rack and to facilitate control and replenishment thereof. As shown in Fig. 1, the device comprises a supporting base-plate 10 having integral lugs 11, 12 to secure thereto a divider member 13 comprising an inverted U-shaped strip of spring steel having its free limb 14 bent under at 15, the base-plate 10 resting against the back of the rack 19 and the steel strip 14 pressing against the glass front piece 20 to hold the device in position. A pip 16 in lug 11 engages a hole in the secured limb 14a as additional securing means. Tongues 17, each side of the divider member 13, are struck up from the base-plate 10 to hold a card or tab 18 bearing a figure such as " 6 " or " 7 " which may relate to a place of storage for reserve stock of the section of the rack so marked. As shown in Fig. 5, the divider member comprises a plate 36 integral with a base-plate 37 which lies against the rear wall and is formed with a bent-back hook 39 adapted to clip over the upper edge of rear glass panel 35 which forms the front panel of the next rack. Inturned lugs 38 carry a tab 34. In a modification (Fig. 2, not shown), a triangular-shaped divider plate is formed with an integral forward projection of inverted U-shape to clip over the upper edge of panel 20, the symbol being engraved on the divider plate. The constructions having the designating symbol against the rear of the rack are arranged in this manner in order that the symbol shall be covered when articles are in the display position and uncovered only when replenishment is needed.
Patent GB-1004843-A (GB)
Title: Improvements in or relating to superconductive circuit arrangements
Inventor: PRIOR ARTHUR CUNNINGHAM
IPC: H01F6/00
Filed: 1962-05-22
Abstract: 1,004,843. Superconductive circuits. NATIONAL RESEARCH DEVELOPMENT CORPORATION. May 20, 1963 [May 22, 1962], Nos. 19650/62 and 32030/62. Heading H3B. A superconductive solenoid C is incrementally energized to provide an enhanced circulating current by (1) initially energizing a transformer T while the superconductive solenoid has two shunt superconductive paths open-circuited by respective superconductive switches 3, 6; (2) inducing a current which circulates through the solenoid by closing switch 3 and reversing the direction of the transformer energizing current; (3) closing switch 6 and opening switch 3 so that the current circulates through the solenoid and the latter switch; (4) adjusting the transformer energizing current to its original direction and magnitude and closing switch 3, and (5) opening switch 6 and repeating the cycle from step (2). Superconductive switches and transformer windings W1, W2 are used, the circuit being housed in a container 2 containing liquid helium, for example. The switches are controlled by field control circuits 9, 10 and the transformer primary winding W1 is energized from a current source 19 through a current regulator 20 and a reversing circuit 21. Each time a switch is to be opened during a cycle of operation, the transformer energizing current is reduced so that the current in the path to be open-circuited is reduced to zero. This occurs in step (2) between the closing of switch 6 and the opening of switch 3, and in step (5) prior to the opening of switch 6. The superconductive elements 4, 7 may be controlled by magnetizing coils 5, 7 as shown or by the use of heating elements. The currents in various parts of the superconductive circuit are measured by magneto-resistance or Hall effect devices 11-14 which may form part of an automatic or semi-automatic circuit for incrementally energizing the solenoid C. The superconductive circuit wires 1 may comprise bundles of niobium wires or sintered bars of Nb 3 Sn. The windings may be formed of sintered Nb 3 Sn powder.
Patent GB-228796-A (GB)
Title: Folding pocket case
IPC: B41K1/00
Filed: 1924-08-20
Abstract: 228,796. Bach, R. Aug. 20, 1924. Slidirag bolts.-A folding pocket-case of the kind comprising two main parts a, c hinged toother and pressed apart by a spring, is fastened by a sliding bolt f in a sleeve g on the part a, the handle h of the bolt working in an inclined slot i in the sleeve to shoot the bolt into a flange e on the part c. The bolt may be spring-pressed forward and the sleeve g has a notch k in the slot i to hold the bolt withdrawn. The case is more particularly designed for use as an india rubber stamp, one part carrying the stamp and the other an inking pad.
Patent GB-332600-A (GB)
Title: Automatic rotating sprinkler head
IPC: B05B17/04
Filed: 1929-02-23
Abstract: 332,600. Marks, Sir G. C., (Thompson Manufacturing Co.). Feb. 23, 1929. Divided on 332,625. Rotary apparatus. - A sprinkler comprising a head 31 mounted to rotate on a fixed supply pipe 20, Fig. 4, carrying a tube 33 having a jet 35 slightly biassed to cause a slow rotation of the head, is provided with means operated by the water for vibrating the apparatus so as to prevent sticking and cause it to rotate by a series of jerks. These means comprise an unbalanced weight 43, mounted to rotate in a branch chamber 39 on the head 31, and carrying a hinged vane 57, Fig. 5, by which it is rotated the water escaping through a nozzle 64. The nozzle 64 is formed with a wide slot to water the area between that watered by the jet 35 and the upright 20. The rate of rotation may be varied by turning the nozzle 64.
Patent GB-824049-A (GB)
Title: A device for pre-selecting the diaphragm in photographic lenses and/or cameras
IPC: G03B9/07
Filed: 1957-06-24
Abstract: 824,049. Photographic cameras. SCHNEIDER, M. C. June 24, 1957 [Nov. 2, 1956], No. 19776/57. Class 98(1) In a photographic lens mount, an iris diaphragm is urged towards a closed position by a closing spring but is normally held open by an opening spring, and a device counteracts the action of the opening spring when a shutter release is operated so that the diaphragm is closed by the closing spring until it is arrested at a pre-set aperture. As shown in Figs. 1, 2, a pin e mounted to slide axially in the objective mount is urged outwards by a spring f, its movement being limited by a collar e<SP>1</SP>. One end of a bell-crank lever h bears against pin e, while the other end. acts as a stop for the diaphragm ring k, which is under action of a spring p anchored to a pin n which lies within a cut-out portion of ring k, and is mounted on a lever o attached at o<SP>1</SP> to one of the diaphragm leaves. When the release button g' is pressed, the pin e is moved against action of spring f by means of a pivoted lever g. This rocks lever h through contact with collar e<SP>1</SP> under action of spring p acting through ring k, which turns to close the diaphragm ring until an extension c of one of the blades encounters the spiral inner surface of a camring b. The aperture to which the stop closes is determined by the position of cam-ring b, as adjusted by a finger-piece b<SP>1</SP>. On release of knob g<SP>2</SP>, the spring f, which is strong enough to overcome the action of spring p, returns the parts to their initial position with the diaphragm fully open.
Patent GB-663014-A (GB)
Title: Improvements in root harvesting machines
IPC: A01D25/02
Filed: 1949-07-27
Abstract: 663,014. Digging root-crops. FORD MOTOR CO., Ltd., and BYWATER, J. E. May 31, 1950 [July 27, 1949], No. 19779/49. Class 6(iii) Relates to root-crop digging devices of the type wherein the crop is dug by shares 12 and delivered by a horizontal spinner 10 through an adjustable gate which arranges the crop in a single row. According to the invention, such a device is mounted on a pair of parallel tool-bars 7, 8, carried by the lifter bracket 9 at the rear of a tractor, through a sub-frame 1, 2, which is bolted to the toolbars and carries the various parts. The sub-frame comprises members 1, 2 of loop formation welded together and carrying perforated plates 3, 4, which are bolted to the bars 7, 8. Rearwardly-extending bars 5 carry the spinner head 10, and adjustable brackets 13 carrying the shares 12 are secured to the loops 2.
Patent GB-590075-A (GB)
Title: Improvements in and relating to a thread rolling machine
IPC: B21H3/04
Filed: 1944-10-13
Abstract: 590,075. Rolling screw - threads. REED, A. B. Oct. 13, 1944, No. 19805. [Class 83 (iv)] Axial rolling ; die-rolling.-In a thread rolling machine in which the work is held between and rotated by positively driven die rolls, three die rolls hold the work axially immovable while the entire thread length is being rolled, the die rolls being moved towards the axis of the work to predetermined innermost positions as each die is rotated through more than one turn. The die rolls 10 are driven by sleeves 22 from a central gear 53 by means of pinions 58 and universally-jointed telescopic shafts 61, 62. The rolls are supported by pillars 14 carried in yokes 15 which are adjustably connected to pivot members 16 and form one member of a toggle, the other member of which is an arm 20 pivoted at 23 to the stationary housing. The pivot members 16 are mounted in blocks 19 clamped in predetermined positions against cam faces 80 formed on upper and lower stress rings 25, 26 supported adjustably in a housing ring 27 carried by a ball-race on the main frame 32 and driven by a pinion 38 and segmental rack 36 from a reversible motor 45. The oscillatory motion forces the dies by means of the toggles into the work at a predetermined rate and to a controlled depth. Alignment of the die-rolls is effected by a vernier adjustment at 79 on each pivot member 16, and the stress rings may be adjusted relatively to one another by a pinion 100 to cause the blocks 19 to tilt for rolling threads on tapered workpieces, the adjustment being indicated by vernier readings. The workpiece 12 is located vertically by a rod 110 and is ejected by a sleeve 119 operated from a solenoid by a lever 117. The toggles may be replaced by triangular plates each pivoted at one corner, carrying the die-roll at another and fitted with a cam roller at the third.
Patent GB-583286-A (GB)
Title: Improvements in or relating to starting and stopping mechanisms
IPC: F16D67/02
Filed: 1944-10-14
Abstract: 583,286. Brake operating mechanism. BRITISH UNITED SHOE MACHINERY CO., Ltd., and KEALL, F. B. Oct. 14, 1944, No. 19868. [Class 103 (i)] In starting and stopping mechanism for machines, comprising an inertia device for relieving the braking pressure and the strain in the mechanism, such as described in Specification 435,408, the inertia device is rendered more effective by forming it in two parts urged together by a spring which permits one part to move away from the other initially after the application of the brake. The driven member 1 is slidably keyed to the machine shaft 3 so as to be movable to engage a brake member 7 and by a lever 15 pivoted at 15' or by springs 45 to engage the driving member 5. The inertia member comprises a weighted part 9 secured to a spindle 13 rotatable in the end of the lever 15 and a weighted part 11 freely mounted on the spindle and urged normally to engage a face 25 therein with a face 23 on the part 9 by a helical spring 17 surrounding the spindle with its ends engaging pins 19, 21 on the parts 9, 11. The pin 21 may be fixed in one of a series of holes 22 to adjust the spring pressure. A latch 39 freely mounted on an eccentric part 37 of the spindle 13 is adapted to engage a lever 41 operated by a cam 43 on the shaft 3. The part 11 carries leather discs 33, 35 for engagement with stops 27, 29 on a fixed bracket 31. The parts are shown in the brake-applied position. When the latch 39 is moved downwards by the treadle, the weighted part 11 with the part 9 falls to the lower position against the stop 29 and the member 1 is moved by the springs 45 to engage the driving member 5. When the latch is allowed to swing upwards into the path of the lever 41 the brake is applied by the lever 15 and the reaction causes the inverted part 9 to rock in a clockwise direction momentarily away from the part 11 thus causing movement of the latch to the right by the eccentric part 37 of the spindle 13, to relieve the braking pressure and the strain in the mechanism. Upward movement of the part 11 thus effects re-engagement of the faces 25, 23 so that it co-operates with the part 9 to continue the turning movement of the eccentric part 37 and thus the relieving action. The device is shown in connection with the shaft 3 of a shoe-part perforating machine.
Patent GB-878833-A (GB)
Title: Improvements in or relating to means for machining trochoidal rotors
Inventor: BAIER OTHMAR
IPC: B24B19/09
Filed: 1958-06-20
Abstract: 878,833. Grinding. NSU WERKE A.G., and WANKEL, F. June 20; 1958, No. 19882/58. Class 60. Means for producing or processing a cylindrical surface of a rotor, the cross-section of which is a trochoid or a curve parallel thereto, including two wheels rolling one against the other, one of the wheels being connected to a point which describes a trochoid on the rotor which is fixed in relation to the second wheel, a processing tool being mounted on a support rotatable about the trochoid-generating point and always being normal to the generated trochoid, the support having a slideway pivotally connected to an arm which is rotatable about a point located on a line connecting the centres of the two wheels, is characterised in that the arm, to which the slideway in respect of the tool support is pivotally connected, is rotated by a wheel the axis of rotation of which is located on the line connecting the centres of the wheels and which is rotated in the same direction- and at the same speed as the wheel bearing the point generating the trochoid. A trochoid is generated by a point P 2  on a wheel K 2  rolling on a wheel K 1 . A link n is pivoted at Pz and passes through a guide P on an arm N<SP>1</SP>I<SP>1</SP> secured to a wheel K<SP>1</SP> 2 . The points of contact of wheels K 2  and K 2 <SP>1</SP> with the wheel K 1  are at opposite ends of a diameter of wheel K 1 . The geometry of the arrangement is such that n passes through the point of contact of wheels K 1  K 2  and is thus normal to the trochoid. As exemplified in a machine, Figs. 3 and 4, the workpiece 2 is clamped to a base plate 1. A casing 4 secured to the base plate 1 carries a non-rotatable bolt 5 on which is keyed a gear 9. Arms 15, 16 rotatable about the bolt 5 by gears 27, 28 carry gears 11, 12 meshing with the gear 9.. The shaft 13 of gear 11 is formed as a swivel arm 31 in which is mounted a pivot member 32 through which passes a rod 33. The shaft 14 of gear 12 has an eccentrically arranged pivot member 34 on which is rotatably mounted a bridge 35 connected to the rod 33 by screws 36. The rod 33 has a recess 37 in which is slightly guided a support 38 for a guiding wheel 39 driven by belt 45 for a motor 46 ; the support 38 and motor 46 are adjustable relative to the rod 33 by a screw 41. In a modification, Fig. 5, the wheels K 2  and K 2 <SP>1</SP> are internally toothed and engage wheel K 1 . In a further modification, Fig. 7, a wheel K 2 * concentric with the wheel K 2  drives, through idler K 1 ,* a wheel K<SP>1</SP> 2 * which carries the guide T for the member pivoted at P 2 . The wheels K 2  may be internally toothed.
Patent GB-190511-A (GB)
Title: An improved method of and apparatus for printing both horizontal and perpendicular lines, in conjunction with type
IPC: B41B1/14
Filed: 1921-07-25
Abstract: 190,511. Rowe, E. July 26, 1921. Leads and rules.-Integral rules and interlinear spaces e, Figs. 3 and 4, made typehigh and in sections of various widths and lengths, and having one or more line, dotted, or ornamental printing-faces, are provided for building up either the horizontal or the vertical lines in a ruled forme, in conjunction with ordinary type-high brass rules for the perpendicular lines, or threaded by rectangular holes e<1>, Fig. 3, or slots e<2>, Fig. 4, on guide rods h, Fig. 1, in which case cross rules f stand on the rods h and are correspondingly less than type-high. The cross rules f are provided with different printing-faces on the two edges. Corresponding elements without printing-faces are provided for use as quads and leads. The sectional rules with dotted printing-faces can be used as leaders and for the blank columns in timetables. Chases. - The chase shown in Fig. 1 is provided with lower side bars c fast to the head and tail bars a, b to receive the guide rods h, and with upper side bars d hinged to the tail bar b and engaging spring catches c<1> on the head bar a to secure the rcds h. Locking-up bars a<1>, d<1> are adjusted by screws g passing through the head bar a and the side bars d.