baber/WOPTO huggingface dataset:
Patent GB-1023571-A (GB)
Title: Self controlling thermal device (simple extremum control) or energy flow control
IPC: G05D23/24
Filed: 1962-02-06
Abstract: 1,023,571. Automatic temperature control systems. G.P.HARRIS and M.J.HARRIS. Jan. 24, 1963 [Feb. 6, 1962], No. 4447/62. Heading G3R. [Also in Division H2] An automatic temperature control system utilizes the heating element 1 as the temperature sensitive element. The positive temperature sensitive element 1 made of say Wiles-Wiggin alloy is connected periodically through contacts 2 to a normally non conductive transistor, which if the element is below a determined temperature and resistance conducts and heats an element 3 operating a birmetal device to throw contacts 2 on to supply contacts 6 to heat the element 1. If element 1 is above the determined resistance transistor 5 remains non conductive until the resistance falls. Heavy conduction of transistor 5 will open contacts 15 breaking the supply. The arrangement may regulate the temperature of air from a fan heater by a pair of additional contacts shunting a series motor resistor of negative temperature co-efficient when the heater is connected.
Patent GB-469254-A (GB)
Title: Improved method of road lighting from headlamps and other front lamps on motor cars and like vehicles
IPC: B60Q1/124
Filed: 1936-02-14
Abstract: 469,254. Directing vehicle lamps. LUPTON, J. H. Feb. 14, 1936, No. 4467. [Class 75 (iii)] The headlamps of a vehicle are adapted to be moved automatically from the steering gear along supports on arcs of a circle, having its centre coincident, or vertically in line, with -the middle point of a line joining the centre points of the two front wheel pivots, so that the beams will always be directed in the same relative position to the centre of the track taken by the vehicle. As shown, each lamp carrier N is slidable along arcuate rods J, secured by nuts K to a bracket U, and extends around and under a cover P, secured by screws S to the bracket. A lever T, pivoted to a support G over the front axle, is fixed at one end to the middle of a connecting rod F between the lamp carriers and is connected at the other end by links Z, W and a bellcrank lever V with the steering drop arm so that the outer carrier N on a curve is moved forward along its carrier and the inner carrier backward. A spotlamp H<3> may be attached to the lever T, or hung from the rod F, so as to move in unison with the headlamps.
Patent GB-1088750-A (GB)
Title: Improvements in or relating to a load brake
IPC: F16D63/00
Filed: 1966-02-01
Abstract: 1,088,750. Winding apparatus. DRESSER INDUSTRIES Inc. Feb. 1, 1966 [Feb. 3, 1965], No. 4486/66. Heading B8B. [Also in Division F2] A hoist (Fig. 1, not shown) comprises a housing (2) for an electric motor and its associated brake, the motor driving a pinion 4 connected through a load brake 12, 19, 7 to a gear 8 associated with the hoist sprocket. The load brake comprises a driving train shaft 5, a ratchet wheel 16 journalled thereon, a pawl 34 carried in a non-rotatable cage 27, 28 and engageable with wheel 16, and a flange 19 keyed to the shaft 5, the parts 12, 16, 19 being forced together axially, by cam members 9, 11 connected respectively to shaft 5 and wheel 12 for conjoint movement with the shaft when the latter rotates in a load raising direction or is stopped to hold the load, the pawl then holding the wheel 16 stationary. When the shaft rotates in the other direction the cam members release the gear wheel 12 from the held ratchet wheel. Friction discs 15, 18 are disposed on either side of the ratchet wheel. The ratchet 34 is provided with a spring (38, Figs. 2, 4, not shown) engaging the ratchet wheel teeth and moved thereby according to the direction of rotation of the wheel to either engage the pawl with the teeth or move it from the tooth path, during hoisting, to eliminate ratchet click.
Patent GB-822257-A (GB)
Title: Improvements in or relating to a lifting card for electric relay spring sets
IPC: H01H50/56
Filed: 1958-02-11
Abstract: 822,257. Electromagnetic relays. TELEFONAKTIEBOLAGET L. M. ERICSSON. Feb. 11, 1958 [Feb. 15, 1957], No. 4489/58. Class 38 (5). A lifting card 1 for a relay contact spring set has a projection 8 at one end with two edges 9 and 10 at right angles and a cut-out 6 at the same end also with two edges at right angles. One edge 11 of the cut-out is parallel to the edge 9 but spaced from it by a distance equal to the width of the slots 7 so that the edges 9, 11 retain the upper spring 2. The edge 10 engages the end of slot 6 in the upper spring to hold the card in place. The upper spring is mounted after the other springs are engaged in the slots 7.
Patent GB-100249-A (GB)
Title: Improvements in or relating to Diesel Motors.
IPC: F02B33/00
Filed: 1916-03-27
Abstract: 100,249. Soc. Anon. des Etablissements Delaunay-Belleville. April 2, 1915, [Convention date]. Compression engines.-To produce a uniform torque on the crank-shaft and to ensure balance in an eight-cylinder Diesel engine, the cylinders are arranged two on each side of charging-pumps B<1>, B<2> and their pistons are connected to cranks displaced by 45 degrees. The cranks of the pumps B<1>, B<2> are 180 degrees apart and are in the same plane as the oppositely-disposed cranks of a pair of auxiliary air-compressing pumps I<1>, P. The plane containing the cranks of the compressors makes an angle of 22¢ degrees with one of the engine cranks.
Patent GB-681790-A (GB)
Title: Dry surface rectifier
IPC: H01L25/07
Filed: 1951-02-26
Abstract: 681,790. Rectifiers. STANDARD TELEPHONES & CABLES, Ltd. Feb. 26,1951 [April 21, 1950], No. 4644/51. Class 37. A dry rectifier assembly comprises rectifier elements electrically connected in parallel and cooled by the application of an external cooling medium, the surfaces of the assembly to which the cooling medium has access being at the same electric potential. In Fig. 1, the rectifiers comprise plates 2 with semi-conductive layers 3 assembled in pairs with the layers 3 facing each other; metal discs 4 connect the layers 3 to a rod 5 insulated by a sleeve 6 from the plates 2 and their connecting sleeves 7; the plates 2 are welded together at their circumference, so that the surface exposed in the case 1 is at a uniform potential, and short-circuits cannot be caused by tools &c. dropped into the case. To ensure good contact between the discs 4 and the rod 5, the latter is flattened and the apertures in the discs are made non-circular so that on rotation, the discs grip the rod. Or, the rod may have notches 8, Fig. 6, and the discs with non-circular holes, may be rotated and forced up the incline to the position 9. The plates 2 may have a thin insulating layer between them at their circumference instead of being welded together Fig. 7 (not shown); the plates 2 are connected together by straps. In Fig. 8, a single rectifier 2, 3 has a cover-plate 12 welded to its base 2, insulating material 13 being interposed on the rod 5. In Fig. 9 the semiconductive layer 3 is on both faces of the plate 2, and is covered by a counter-electrode which extends over the circumference of the plate and is separated therefrom by an insulating layer 14. The rectifiers of Figs. 1 and 9, may be combined in one assembly, Figs. 10, 11 (not shown). Fig. 14 illustrates the convection cooling currents, and shows that an open top 2 may be used to the case 1, since a tool 6 dropped through will not short-circuit part of the rectifier assembly.
Patent GB-315445-A (GB)
Title: Double wall venturi tube steam fittings particularly for paper-machine driers
IPC: D21F5/02
Filed: 1928-02-14
Abstract: 315,445. Woodsome, J. O. Feb. 14, 1928. Drying materials in long lengths; rollers or cylinders, hollow.-The steam supply and exhaust pipes 8, 33 of a paper-machine drying cylinder 1 are provided with Venturi tubes 10, 32 having removable two-part throat sections and connected at their throats by a pipe 19. The suction produced in the space 30, Fig. 3, of the tube 10 by the flow of steam from the main 9 effects, through the pipe 19 and the space 36, Fig. 4, of the tube 32, the removal of condensates, air, &c. from the cylinder through the syphon 7. The condensation passes through the tube to the exhaust main 38 and the air is vented through a valve 37. Steam exhausted from the cylinder is returned to the tube 10 through the pipe 19.
Patent GB-139171-A (GB)
Title: Improvements in the manufacture of cellulose
IPC: D21C3/06
Filed: 1920-02-16
Abstract: 139,171. Braun, C. A. May 29, 1918, [Convention date]. Addition to 137,831. Pulp, preparation of.-To the lye mixtures used according to the parent Specification, and containing sulphites and sulphides, caustic alkali is added in sufficient quantity to remove the colouring caused in the boiling process.
Patent GB-594358-A (GB)
Title: Improved means for supplying a high regulated voltage from a low voltage direct current source
IPC: H02M3/33
Filed: 1945-02-24
Abstract: 594,358. Voltage control Converting. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Feb. 24, 1945, No. 4713. Convention date, Feb. 24, 1944. [Classes 38 (ii) and 38 (iv)] An apparatus for obtaining a high and regulated voltage from a low voltage D.C. source comprises a relaxation oscillator coupled to a load 21 via a step-up transformer 13 and a rectifier 17. A fraction of the output voltage, derived from a potential divider 25, is applied as a bias to the grid of the oscillator so as to maintain the load voltage constant. The transformer 13 may have an additional low voltage, secondary winding 31 which supplies the heater elements 33 of the load 21. Any increase in the voltage across the load 21 produces a decrease in the voltage derived from the transformer by the heater elements 33, so that additional control of the load voltage is obtained.
Patent GB-451956-A (GB)
Title: Improvements in or relating to devices for controlling windows of the sliding type
IPC: E05F11/38
Filed: 1935-02-14
Abstract: 451,956. Window fastenings. YOUNG, W., Claydon Works, Mill Road, Wishaw, Lanarkshire. Feb. 14,1935, No. 4717. [Class 44] A fastening for sliding sash windows comprises a shaft D rotatably mounted on the top edge of the window A and carry. ing two cams G which coact with the window frame B in one position to force teeth H on the window into holes J in the frame, and in another position to withdraw the teeth from the holes when the shaft D is rocked by a finger piece E on the shaft against the action of springs thereon. The window is positioned in the frame by blocks K at the lower corners and by the cams G at the upper corners,
Patent GB-983390-A (GB)
Title: Improvements relating to image scanning systems
Inventor: REMLEY WINSLOW RODECK
IPC: G06V10/20
Filed: 1964-02-05
Abstract: 983, 390. Automatic character reading. INTERNATIONAL BUSINESS MACHINES CORPORATION. Feb. 5, 1964, No. 4812/64. Heading G4R. [Also in Division H4] In a system for scanning an image to produce representative signals, a scanner 13 produces signals, Fig. 3, representing sections on a succession of lines T-10T, Fig. 2, there being a signal circulating loop containing a one-scan delay 22 and an amplifier 23 of gain less than unity, the circulating signals being added to the incoming signals in a summing circuit 21. There may also be a lowpass filter 20 which cuts out the high-frequency component of the square waves of Fig. 3, resulting in signals as shown in Fig. 4. The image representation is thereby given a soft edge in the horizontal direction as shown in Fig. 5. The effect of delay 22 and amplifier 23 is to produce a soft-edge in the vertical direction as shown in Fig. 7. The resulting signals, Fig. 6, have a reduced band width which, in a character recognition system, reduces the circuit requirements and the number of samples that need to be taken.
Patent GB-731602-A (GB)
Title: Improvements in or relating to gas cookers
Inventor: LUSK ARCHIBALD
IPC: F24C15/18
Filed: 1952-02-26
Abstract: 731,602. Gas cookers. PARKINSON STOVE CO., Ltd. Feb. 25, 1953 [Feb. 26, 1952], No. 4964/52. Class 126. A gas cooker comprises one or two grilling burners at eye-level supported under a canopy at the upper ends of pillars extending upwards from the rear frame of the cooker. The cooker shown comprises two pillars 10 upon which is mounted a horizontally disposed rectangular frame 11 supporting the two burners 13 and a double-wall heat insulated canopy 27. Depending from each side of the frame is a member 31 for slidably supporting a grill pan 30, the food supporting rack 33 of which is removable and may be used in an inverted position within the pan if required. A splash-back plate 36 is disposed in front of the pillars 10 and the space 42 between the pillars and behind the back is covered by a plate 43 whilst the spaces 39 behind the back on the outer side of each pillar are covered by plates and, at their upper ends, by lateral extensions 40 of the canopy, such that they may serve as flues for conducting gases from the cooker oven. Slots 41 are provided in the extensions to serve as gas outlets and as receptacles for warming plates. The space 42 contains all the gas supply connections to the grill unit, i.e. the main supply 16 to each burner and pilot supply 22. The latter supply feeds a jet 21 and flash tubes 20, each of which extends to a point adjacent its respective burner. Combustion gases from the burners are conducted via slots 24 to the space 25 within the canopy from whence they pass to the atmosphere through a longitudinal slot 26. In a modification the canopy extensions 40 and plates closing the spaces 39 between outer sides of the pillars and the splash-back are not provided the waste gases from the oven passing to the atmosphere through a bifurcated outlet having a duct carried up behind the back on the outer side of each pillar, the outlet end being located at the top of the back at the side of the grill unit.
Patent GB-588542-A (GB)
Title: Arrangements for applying attachments to travelling lengths of material
IPC: H01B7/36
Filed: 1945-02-28
Abstract: 588,542. Measuring continuous lengths. SIEMENS BROS. & CO., Ltd., and ROSEN, A. Feb. 28, 1945, No. 4999. [Class 42 (ii)] [Also in Groups XV, XXV and XXXVI] Bifurcated attachments are applied to a travelling length of material 29, by separate carriers which hold their branches outwardly under mechanical restraint and which position or move them to embrace the material, the association between a carrier and its attachment being broken and the restraint removed when it is desired to clamp an attachment to the material. A baseplate 1 and frame 2 carry the cores 5, 6 of electro-magnets 7, 8 having a common armature 9 which carries an ejector 16 and a pin 14 which engages a stud 33 to open switch 15 and reverse the electro-magnets. The attachments comprise spring clips 26 within carriers 27 in a magazine 28, the lower carrier engaging a platform 23 with a rod 24 secured to the upper arm of switch 25. When the ejector 16 is moved to the right to release a clip 26, it carries the weight of the column of clips, and platform 23 rises to open switch 25 which is in circuit with the energizing relay. The released carriers move along a guide 22. The clips may be used to indicate faults in an electric cable 29 or as insulating washers in an air space coaxial cable, or for marking predetermined lengths.
Patent GB-821413-A (GB)
Title: Improvements in or relating to the control of electrically-driven rectilinear actuators
IPC: H01H19/18
Filed: 1956-01-31
Abstract: 821,413. Control of D.C. motors; controllers. HOOVER, V. A. Jan. 31, 1956, No. 5114/58. Divided out of 821,411. Class 38 (3). An actuator for controlling the wing-flaps of an aircraft, which are adapted to be stopped in a half-extended position as well as in extended and retracted positions, comprises a rotatable nut 222 for driving a non-rotatable screw 223. A motor 226 is coupled to the nut through magnetic clutch and brake unit 227 and reduction gearing 228. A load-limiting switch 232 is adapted to be short-circuited by switch 233 so as to render it effective only when the screw has approached the inner limit of its travel. A ring cam 234 moves with the screw 223 and has an adjustable collar 236. An " intermediate " limit switch 240 and an " extend " light switch 241 are operated by the cam-parts 236 and 237 respectively. The motor 226 is of the split series field type, Fig. 2 (not shown), with manual switches for driving the motor to a selected one of its three stopping-positions. Closure of a first selector switch energizes a relay for exciting one of the motor field windings and driving the screw to an extended position. Operation of switch 241 de-energizes the relay and so disconnects the motor and the clutchcoil as well as applying the brake. Movement to the intermediate and retracted positions is similarly effected, except that the motor is arrested in the retracted position by means of the load-responsive switch 232. Actuator units may be mechanically cross-connected so that both are driven by the motor of one actuator in the event of failure of the other motor. Each actuator has an auxiliary brake-releasing coil adapted to be energized through the circuit of the other actuator, and resistances are provided to prevent substantial current-flow through the field windings of the disabled motor. An actuator for an aircraft canopy, Fig. 5, comprises means for limiting the thrust exerted by screw 336 during both extension and retraction, a nut 332 being supported for limited axial movement and centred between opposed sets of springs which yield when a predetermined load has been exceeded. The resulting movement of nut 332 causes axial movement of the outer race of bearing 333, and this motion is utilized to open limit switches 366, 367, by means of arm 370 and slidable plunger 375. Because the intermediate position may be approached from either the extended or retracted positions, four limit switches 380-383 are provided and are operated by plungers 385-388. A ring cam 389 is adapted to engage followers 390, 391, so as to operate shaft 394 and cams 400-402, or shaft 395 and cam 403, respectively.
Patent GB-982350-A (GB)
Title: Welder's mask
IPC: A61F9/06
Filed: 1963-02-08
Abstract: 982,350. Welder's masks. H. BURMEISTER. Feb. 8, 1963 [Feb. 19 1962], No. 5136/63. Heading G2J.  A welder's mask comprises a head cap and a face shield with a vision slot therein, and a flap for holding a filter member is pivotally mounted adjacent the slot by means of two axle pins, one of which carries a crank formation engaged by a traction element which is operable by an intermediate member to which an actuating element is secured, the actuating element being so arranged as to be engageable with and actuatable by the body of the wearer. In the embodiment shown in Fig. 7, a mask 1 has a flap 6 pivotable on bolts 9,10 and urged into closed position by means of spring 62, the tension of which is adjustable by screw and nut 65. The flap is opened when the welder moves so that his shoulder or chest touches knob 19 of rod 49 and moves it to the left thereby pivoting lever 55, 56 about pivot 57 and pulling thread 59 to pivot the flap closed by means of pin 15. A yoke 66 provides end stops for the lever 55, 56 and may comprise latching means to hold the flap in its open or closed position. The rod 49 is adjustable in a clip 50. In the modification shown in Fig. 3, pin 15 is attached to a Bowden cable 13 and rod 49 through a screw threaded sleeve to a rod 17. Cable 12 is attached to a plate 22 which can be latched in two positions one by means of notch 27 (corresponding to the open flap position) into which it is urged by spring 24 and the other by means of notch 28 (corresponding to the closed flap position) into which it is urged by pressure on rod 49 and rod 17. In the modification shown in Fig. 5 rod 22 is connected to pin 15 and rod 49 (only knob 19 shown) is connected by a screw threaded sleeve 18 and rod 36 to a crane lever 37, 38. The crank lever is pivoted at 39 and has a projection 43 which in the flap closed position is held in a recess 44 of a spring 42. The end 45 of the spring is inclined to the right so that when the lever 37, 38 in its flap closed position is urged anti-clockwise and then released, projection 43 slides along spring end 45 away from recess 44 and is then rotated past the recess by spring 40. The pivot 39 may be situated at the angle of the lever and the projection 43 may be mounted on this pivot.
Patent GB-308053-A (GB)
Title: Advertising and the like signs and facias
IPC: G09F13/14
Filed: 1928-02-20
Abstract: 308,053. Berry, H. H., and Painton, C. A. Feb. 20, 1928. Signs; name-plates and the like.-A sign for day and night use of the kind in which a prismatic reflector sheet directs daylight through a stencil &c., is provided with a source of light adapted to illuminate the stencil and throw light rearwardly above the stencil. Light from above passes through the prismatic glass sheet 1 to illuminate the stencil 2 by refraction and reflection. For night illumination, light from a lamp 5 illuminates the stencil and part passes through the prismatic glass and illuminates the wall 3. A mirror 6 below the lamp may have an opening 7 for lighting the window 4 and pavement. When the prismatic glass 1, Fig. 2, and stencil 2 are in juxtaposition, light from the lamp 5 and reflector 6 is reflected from the rear face of the prismatic sheet on to the wall 3. Specification 297,691 is referred to.
Patent GB-333501-A (GB)
Title: Improvements in and relating to change speed gears for motor vehicles
IPC: F16H59/04
Filed: 1930-02-17
Abstract: 333,501. Soc. Anon. A. Saurer. Feb. 16, 1929, [Convention date]. Variable-speed gearing for vehicles comprises a double clutch 15, Fig. 1, which is held in its extreme engaging positions by a ' throw-over ' spring 39, Fig. 3, and means 42 for locking the clutch 15 in neutral, which is released bv a selective movement of a control lever 20. When the lever 20 is moved to operate gear elements other than the clutch 15, it slides in a slot in a fork 46 which is connected through a spindle 43 to the locking-device 42, which is therefore not moved. Such other gear element may be a gear 28 sliding in the driven shaft adapted to produce lowest speed and reversed drive. The clutch 15 produces a direct drive from driving-shaft 3 and also middle speed. When the clutch 15 is to be moved, lever 20 is moved on its ball support 21 in the plane of Fig. 3 so as to bring its terminal fork 22 into engagement with a knob 32a on a lever 32. This turns fork 46 and spindle 43 so as to move the locking -device 42 from the locked position shown in Fig. 4 to the unlocked position shown in Fig. 5. The member thus locked is the lever 41, which is acted on toggle-wise by spring 39 to throw over the clutch 15. This throw-over can now be started from control lever 20 through linkage 32, 31, 33, 34, 35, 36, 37. A modification is described in which there are two double-clutches and two throw-over levers 41<a>, 55, Fig. 8, controlled by a double locking device 42<a>.
Patent GB-1572728-A (GB)
Title: Structural units comprising vinylchloride polymers
IPC: C08J7/04
Filed: 1977-02-09
Abstract: PVC surfaces with a covering layer of polymethyl acrylate or a copolymer thereof applied thereto in a strongly adhesive manner and containing colour pigments and UV stabilisers are additionally protected against the effects of sunlight. To this end, the covering layer is formed in such a way that it does not absorb IR radiation. IR-reflecting pigments and/or dyes in the covering layer or in the PVC layer reflect the IR radiation on incidence. The addition of UV stabilisers additionally makes the covering layer virtually opaque to UV. Warming and degradation by sunlight are thereby avoided, which is particularly important for external building components, such as window frames, etc..