baber/WOPTO huggingface dataset:
Patent GB-1262673-A (GB)
Title: Safe load monitoring system for material handling apparatus
IPC: B66C23/90
Filed: 1969-07-16
Abstract: 1,262,673. Safety devices for cranes. GROVE MFG. CO. 16 July, 1969 [19 Dec., 1968], No. 35921/69. Heading B8B. [Also in Divisions G4-G6] A safe load indicating system for a crane of the kind having an extensible boom pivoted on a supporting structure and an hydraulic ram for moving the boom vertically about its pivot, comprises a selector switch 52, Fig. 12, rotated through a worm gear and cable reel as the boom is extended to select one of twelve selector switches Al-A12, the wipers of which rotate together as the boom is raised and lowered, a further group of switches P is controlled by a pressure responsive mechanism connected to the hydraulic ram so as to be operated by different pressure ranges, the switches P connecting outputs of the selector switches A1-A12 to an indicating circuit in such a way that a lamp indicates when the moment of force, at a particular boom length and angle exceeds a safe level. A cam 59, Fig. 3, rotating with the boom is so shaped that the cable 62 running over it moves an equal distance for each increment of horizontal displacement of the end of the boom for different boom elevation angles. The other end of cable 62 is wrapped round a pulley, spring loaded against it. Shafts on the pulley carry the wipers 72. The pressure responsive mechanism comprises a spring loaded cylinder 80, Fig. 6, connected by a lever 95 and link 98 to a slider 100 acting as a cam to operate a series of the switches Pl-P24. The safe pressures for each angle and length of boom are calculated and connections such as 78, Fig. 12, made to these switches so that relay 108 is energized to light green lamp 117. If the safe pressure is exceeded the relay drops out and red lamp 121 is lit. A buzzer 122 may also sound and solenoid-operated valves 123-126 are actuated which prevent the crane being operated to move further beyond the safe limits. Specification 1,126,727 is referred to.
Patent GB-1352004-A (GB)
Title: Fire alarm signalling system
IPC: G08B21/16
Filed: 1971-07-30
Abstract: 1352004 Fire alarm systems CERBERUS AG 30 July 1971 [31 July 1970] 35991/71 Heading G4N [Also in Division G1] A fire alarm system comprises means for removing air samples from spaces, 1, 2 to be monitored for the presence of fire, means for filtering these samples 8, 9 at least for non- gaseous components and means for detecting 10 the presence of carbon monoxide in the samples. A plurality of ducts 4 opening into the chambers 1, 2 may be employed each with a mechanical dust filter 3 at their entrances and each leading to a respective magnetically operated valve in an array 5, the outputs of each valve opening to a common duct 6 in which a pump 7 is housed, the duct continuing through the filters 8, 9 to the detector 10. The valves 5 are controlled by pulse circuits in a source 18 such that they are opened in sequential rotation, the detector 10 producing an electrical output causing activation of an alarm circuit 11 for both a remote warning 14 and a warning 16 adjacent the fire, which warnings may be audio or visual. The alarm signal modifies the action of the circuits 18 so that the valve open when the CO was sensed is caused to remain open longer in the cycle, and the pump 7 is caused to pump at greater speed. Numerous embodiments for the detector 10 are described (see Division G1).
Patent GB-357863-A (GB)
Title: Process for mixing material to be briquetted with a liquid binding medium
IPC: C10L5/22
Filed: 1930-11-29
Abstract: The process described in the parent Specification of spraying engines binding material into a falling stream of material to be briquetted is modified by using a helical gear pump for spraying the liquid to eliminate impulse, the pump being driven by a motor with an electric regulator.
Patent GB-838695-A (GB)
Title: Marking tools
IPC: B44B7/00
Filed: 1958-11-10
Abstract: 838,695. Embossing. NEW METHOD STEEL STAMPS Inc. Nov. 10, 1958 [Jan. 10, 1958], No. 36072/58. Class 83 (4). A marking tool comprising a housing, a spindle rotatably mounted in the housing, a marking die on the forward end of the spindle, a driven member at the rear end of the spindle and a mounting base supporting the housing as disclosed in prior Specification 795,645 is characterized in that at least one shearable element connects the driven member to the spindle, and in that a shearable element connects the housing to the base. The locating pin 78 in the inclined base 76 acts as one shearable member by being made of low-strength steel that will withstand operating conditions but will shear under excessive load. Excessive strain on the ratchet mechanism 28 is relieved by one or other of the pins 44 and 100. The ratchet pin 30 acts as another shearable element by being made of low-strength steel so that excessive force causes the pin to shear at the inner end of the threaded shank 34.
Patent GB-849141-A (GB)
Title: Improvements in or relating to the manufacture of carpets, rugs, mats and the like from braided, plaited or other heavy materials
IPC: A47G27/02
Filed: 1957-11-20
Abstract: 849,141. Mats. IRISH ROPES Ltd., and MACCARVILL, P. D. Jan. 9, 1959 [Nov. 20, 1957], No. 36111/57. Drawings to Specification. Class 142(4). A mat is made by laying a continuous strip of material, such as flat braid of sisal yarns, in close spiral or zig-zag formation and applying a backing impregnated with an adhesive of latex or polyvinyl acetate or secured by a separate coating of the adhesive. A rotatable board having projecting pins may be used, the braid being impaled on the pins as it is wound into a spiral.
Patent GB-774433-A (GB)
Title: Xerographic development
IPC: G03G15/08
Filed: 1954-12-14
Abstract: 774,433. Developing electrostatic images. BATTELLE DEVELOPMENT CORPORATION. Dec. 14, 1954 [Jan. 4, 1954], No. 36121/54. Class 98(2) [Also in Group XVI] An electrostatic latent image on an insulating surface is developed by contacting it with a developer member comprising a multiplicity of flexible carrier members held in a support and loaded with developer powder. The developer member may be a brush of soft hair or thin metal strands or it may be of fur or like cloth. It may be in the form of a roller or endless belt, and may rotate past an earthed metal plate which assists in charging the powder. A hopper feeds developing powder to the, developer member. The insulating surface may be the surface of a xerographic plate having a latent image thereon or it may be an insulating sheet laid over such plate. The apparatus shown in Fig. 3 comprises a xerographic plate in the form of a cylinder 31 which is rotated in the direction of the amow past charging station 38 comprising a grid 42 held at a high potential, and an exposure station 37, to a developing station 39. A transfer sheet 62 is fed into the developing station 39 from a supply reel 61 and the developing powder is applied to this sheet by a brush in the form of an endless rotating belt 49. The powder is fed to the belt from a hopper 54 and charged by an earthed plate 48. A stippling action is produced by mounting the developer unit on a plate 44 pivoted at 45, and oscillating it by a link 57 from a motor driven eccentric 59. The powder remains on the transfer sheet in conformity with the latent image on the xerographic cylinder, and the powder image is fixed at 65 by means of heat. Alternatively the image may be developed by applying the powder direct to the cylinder 31 and the powder may then be transferred to the transfer web and fixed thereon in known manner. Specification 686.466 is referred to
Patent GB-301925-A (GB)
Title: Improvements in spools of photographic roll film
IPC: G03B17/30
Filed: 1928-12-07
Abstract: 301,925. I. G. Farbenindustrie Akt.- Ges. Dec. 8, 1927, [Convention date]. Roll-film cartridges.- To ensure that, in the initial stages of the winding, the film shall lie flat in the focal plane, the leading end of the film 1, or an extension 4 thereof, is passed through an aperture 3 in the protective paper strip 2, and is secured as by an adhesive patch 5 to the rear surface of the paper strip. Relative sliding movement between the film and the paper strip is thereby permitted, and excess tension on the paper strip at the commencement of winding is relieved. Reference is made to films having a transverse fold in the protective paper strip, which opens out during winding to relieve excess tension on the strip.
Patent GB-742520-A (GB)
Title: Improvements in or relating to safety devices in oxygen respirators
IPC: A62B7/04
Filed: 1953-12-30
Abstract: 742,520. Respiratory appliances. AUERGES., AKT.-GES. Dec. 30, 1953 [Dec. 30, 1952], No. 36178/53. Class 81(2). A safety device in a protective respirator provided with a lung-controlled oxygen supply valve comprises a change-over valve device interposed between the lung-controlled oxygen supply valve and a pressure reducing valve of an oxygen supply reservoir, the change-over device being arranged when actuated by means outside the protective housing of the respirator, to cut off the lung-controlled valve and to open a by-pass conduit provided with a throttle aperture to ensure uniform-rate oxygen delivery. The change-over device 12 is interposed between the pressure reducing valve 10 of an oxygen canister 3 and the lung-controlled oxygen supply valve 15 which is connected with the respiration circuit by a pipe 17. A conduit 16 connecting the changeover valve device 12 with the pipe 17 by-passes the lung-controlled valve 15. The change-over valve device 12 comprises a housing 20 in a central bore 23 of which oxygen passes through a conduit 11. In normal operation of the apparatus oxygen flows through a first nozzle 24 to a conduit 14 and the lung operated valve 15, a second nozzle 26 being closed by a spring-pressed valve member 28. In the event of failure of the lungcontrolled valve 15 the valve member 28 is moved in the bore 23 to close the first nozzle 24 and open the second nozzle 26 by operating a thrust pin 32 by means of a handle 13 on the outside of the apparatus. Oxygen then flows into the respiration circuit of the apparatus through the by-pass conduit 16. A throttle aperture 37 or the annular gap between the second nozzle 26 and the thrust pin 32 are so dimensioned that the required uniform-rate oxygen delivery is provided. A by-pass valve 8 is connected to the respiration circuit by pipes 8a, 17.
Patent GB-393518-A (GB)
Title: Improvements in or relating to single-phase induction motors
IPC: H02P1/44
Filed: 1932-12-21
Abstract: 393,518. Alternating-current induction motors. ENGLISH ELECTRIC CO., Ltd., 28, Kingsway, London, and BALL, R. D., Phoenix Works, Bradford, Yorkshire. Dec. 21, 1932, No. 36202. [Class 35.] For controlling a split-phase motor of the type employing capacity 3, 4 in the auxiliary phase 2, one end of the main winding 1 is connected to the supply main A, a starting resistance 5 has one end connected to the other supply main B, and switchgear is adapted in the starting position to connect the other end of the main winding to the free end of the resistance, and the starting winding in series with capacity to the mains, and in the running position to disconnect the main winding from the free end of the resistance and to connect it directly to the supply main and to reduce the capacity in series with or to re-group sections of the auxiliary winding. As shown, switches 6.. 10 are arranged in two rows, and are operated manually or centrifugally, the upper row being closed for starting and the lower row for normal running. At starting, capacities 3, 4, which, as shown, comprise a three-plate condenser, are in parallel and during normal running they are connected in series. Alternatively, switches 7, 8, 10 may be adapted to disconnect or short circuit one of the condensers or to re-group sections of the auxiliary winding as described in Specification 386,512, or the auxiliary winding may be disconnected.
Patent GB-1431179-A (GB)
Title: Flame resistant polyesters display card
IPC: C08G63/52
Filed: 1972-08-03
Abstract: 1431179 Flame-resistant polyesters BP CHEMICALS INTERNATIONAL Ltd 25 July 1973 [3 Aug 1972] 36241/72 HeadingC3R Flame-resistant unsaturated polyesters are made by (1) condensing maleic or fumaric acid or maleic anhydride with a dihydric alcohol at an elevated temperature to produce a substantially hydroxyl terminated ester, (2) cooling the ester and adding bromine or chlorine to halogenate the α#-ethylenic unsaturation of the ester and (3) reacting the halogenated ester with sufficiently α#-ethylenically unsaturated dicarboxylic acid or anhydride to yield the polyester. The dihydric alcohol may be ethylene glycol, propylene glycol, diethylene glycol, triethylene glycol, dipropylene glycol or mixtures thereof. In addition to the use in stage (3) of unsaturated acids, saturated acids and/or anhydrides may also be used. An example describes the preparation of a brominated ester.
Patent GB-326247-A (GB)
Title: Improvements in apparatus for the carbonization of coal and like material
IPC: C10B1/04
Filed: 1928-12-10
Abstract: 326,247. Illingworth Carbonization Co., Ltd., Illingworth, S. R., South Metropolitan Gas Co., and Evans, E. V. Dec. 10, 1928. Retort furnaces.-Nests of metal retorts in a low temperature carbonizing-apparatus are supported on L-shaped seatings a, which can be removed to allow the retorts to be withdrawn, and the setting to be used for high temperature carbonization. The seatings are bolted to the substructure of the setting and are positioned by tongues c engaging recesses therein. Each seating is formed with a ledge b, on which the H- section metal members of the retort rest, and the lower inner edge d is rounded off to accommodate the refractory lining of the door. The heating- flues are formed in hollow walls e by partitions f, and in the lowermost flue is fitted a semicylindrical member h for preventing loss of heat through the floor of the flue. The walls e are inclined to form an upwardly tapering retort chamber. Specifications 223,624, 244,505, 245,190, 313,021, and 325,810 are referred to.
Patent GB-1149169-A (GB)
Title: Heat utilization in aromatics fractionation
IPC: C07C7/04
Filed: 1966-08-16
Abstract: 1,149,169. Fractionating aromatic hydrocarbon mixtures. UNIVERSAL OIL PRODUCTS CO. 16 Aug., 1966 [26 Aug., 1965], No. 36518/66. Heading C5E. Hydrocarbon mixtures comprising benzene and xylene isomers including ortho-xylene are separated by a distillation process comprising charging the mixture to a benzene distillation column to the bottom of which heat is supplied by indirect heat exchange in a reboiling zone with condensing steam obtained from a steam generation zone as described below, recovering from said benzene column a benzene-rich overhead fraction and a substantially benzenefree bottoms fraction, passing at least part of said bottoms fraction to a xylene distillation column operating under an overhead pressure of 0À68-6À8 atmospheres absolute, passing the overhead vapours from said xylene column through said steam generation zone and therein condensing said vapours by indirect heat exchange with boiling water under regulated pressure and at a temperature higher than that of the benzene column bottoms, recovering said condensed vapours which comprise meta-xylene and/or para-xylene, recovering from said xylene column a bottoms fraction comprising orthoxylene, and withdrawing steam from said steam generation zone and passing at least a portion thereof to the reboiling zone of the benzene column. When the feed mixture also contains toluene, a toluene column is interposed between the benzene and xylene columns, the benzene column bottoms being charged to the toluene column and the toluene column bottoms to the xylene column. Detailed operating conditions for each column are given. The process enables heat economy, since the benzene column may be heated solely by steam obtained within the system.
Patent GB-1220316-A (GB)
Title: Electromagnetic overload-protection clutch
IPC: F16D27/118
Filed: 1969-07-21
Abstract: 1,220,316. Overload-release clutch. BENDIX CORP. 21 July, 1969 [22 July, 1968], No. 36576/69. Headings F2C and F2L. An electromagnetic overload-release clutch comprises an input (output) member 14 and an output (input) member 12 engaged by a stationary electromagnet 54 against a return spring 28 and disengaged on overload by balls 36 in a ring 32 axially adjustable on the member 12, camming out of recesses 50 in the member 14 to allow slip. The balls 36 project less than a hemispherical portion from the ring 32. The recesses may have bevelled edges to render the clutch less sensitive to transient overloads. Again, Figs. 4 and 5 (not shown), the clutch may be engaged by helical springs (228) against the disengaging force of the electromagnet 54, an armature (245) being axially slidable between the members 14 and 12. Also, Figs. 2 and 3 (not shown), a switching means may additionally be provided to cut-off the coil current on overload and overspeeding. The switch comprises a ring (72) having limited rotational movement against an adjustable spring (70) on the hub 30 of member 12, and a ring (74) splined to ring 32 and urged axially against the ring (72). Balls (76) are provided in recesses (75), (77) in the rings (72), (74) to urge them axially apart on overload or overspeed to open a switch (80) in the coil circuit.
Patent GB-449398-A (GB)
Title: Improvements in the process of grinding curved surfaces, and apparatus therefor
IPC: B24B13/00
Filed: 1934-12-21
Abstract: 449,398. Grinding curved surfaces. MOORE, J. A., 20, Red Lion Street, Clerkenwell, London. Dec. 21, 1934, No. 36701. [Class 60] Two concentric sur faces of different radi of curvature, for example, the two spherical faces of a one piece bifocal lens, are ground simultaneously by a tool which is rotated about an axis c, d in contact with a work blank B carried by a holder C rotatec about an axis a, b. The tool has two grinding faces, namely, ar annular part - spherica face A<1>, the centre of curvature of which is at the intersection of the axes of rotation, and an inner face D<1> of conoidal form generated by rotating about the axis c, d a segment of a circle struck from the point o on the axis a, b, the point o being the centre of curvature of the inner surface to be ground. The tool is made of material not subject to appreciable wear, for example, copper loaded with diamond, or grindstone, &c.
Patent GB-427538-A (GB)
Title: Process for coating the inner walls of flexible tubes or casings with a thin film-producing layer
IPC: A22C13/00
Filed: 1934-12-21
Abstract: <PICT:0427538/IV/1> The inner walls of tubes, particularly of regenerated cellulose, are coated by introducing a film-producing material into the tube, squeezing out excess of the material and drying whilst blowing up the tube, the supply of gas for blowing up the tube being shut off from the coating device by subjecting the tube to pressure which gradually increases in the direction of movement of the tube, and then gradually decreases again.  This effect is preferably obtained by passing the tube into and out of a column of water.  Gelatine is the preferred coating material, but cellulose esters and viscous resin solutions also are referred to in this connection.  The tube to be coated is led from a reel 18 and filled with gelatine solution between the rollers 4, 5 and 6 immersed in a bath of warm water or dilute glycerine.  On leaving this bath the tube has excess of gelatine removed by passing it between a squeezing device 11, 12, the pressure applied being determined by a weight 17, and is then passed vertically into and out of a column of warm water or glycerine 2.  The tube finally passes to a drying device wherein drying takes place with the tube in an inflated condition.
Patent GB-1317752-A (GB)
Title: Connecting device for releasably connecting two structural members
IPC: F16B21/02
Filed: 1970-07-29
Abstract: 1317752 Stud and socket fastenings AMHERD AG and J H J SEEGER 29 July 1970 [29 July 1969] 36793/70 Heading E2B A device for connecting two structural members 1, 2, e.g. plates, comprises a stud 4 having a shaft 6 and a portion 10 adapted to abut against one of the members 1 or to be secured thereto, and a retaining element 3 adapted to be inserted in an aperture in the other member 2. The element 3 includes spring legs 15 adapted to engage an abutment on the shaft 6 in one relative rotational position and to be disengaged therefrom in another relative rotational position of the stud and retaining means, and securing means having first and second gripping components for engaging opposite sides of the member 2. The first gripping components 14 are resiliently deformable in a direction substantially co-planar with the opposite sides of the member 2 and the second gripping components are resiliently deformable in a direction substantially perpendicular to the opposite sides of the member 2 and are disposed intermediate between the components 14 and legs 15. As shown, the stud has thereon a rubber ring 11 bearing against a collar 9, and the element 3 is formed with U or V-shaped tongues 14 over which or in the vicinity thereof may be disposed a metallic or rubber spacer ring and which are passed through the aperture 13. In modifications (a) the element 3, (Fig. 4), comprises two parts (3a, 3b) welded together or pivotally connected by a hollow rivet (20), the part (3a) having integral U-shaped spring portions (18), or alternatively the portions 18 are integral with the part (3b), and (b) the element consists of parts (3a, 3b) and an intermediate part having lateral curved spring limbs which abut against the undersurface of the plate 2, the three parts being secured together by rivets.
Patent GB-1275764-A (GB)
Title: Improvements in control systems
Inventor: AINSWORTH JOHN DESMOND
IPC: H02M7/00
Filed: 1969-07-22
Abstract: 1275764 Automatic control of converters ENGLISH ELECTRIC CO Ltd 13 Oct 1970 [22 July 1969] 36822/69 Heading G3R [Also in Divisions H2 and H3] In a control system e.g. for controlling gridcontrol converters, including a plurality of separate circuits having a common output v#α, only a selected one of said control circuits being operative at any instant, each control circuit includes an amplifier 1, 2 having a feedback capacitor C1, C2 and means connected to said amplifier and effective when the amplifier is inoperative to maintain the charge on the capacitor at substantially the same level as that on the capacitor in the operative one of said circuits. The upper circuit may form part of a constantcurrent control of an inverter whilst the lower circuit may provide constant extinction angle in the inverter. Assuming the amplifier 1 has a more negative output than amplifier 2, transistor TR1 will be saturated so as to pass the output from amplifier 1 to the output V½ α and to hold diode D1 cut-off. Diode D2 prevents the voltage difference via R3, R4 driving the output of amplifier 2 positive, hence a small current is maintained in transistor TR2, hence the baseemitter voltage of TR2 is only slightly below that of TR1, so that the charge on C2 is maintained substantially equal to that of C1. The invention prevents system failure due to the time taken for the feedback capacitor C1 or C2 to correct its charge following a changeover in control systems.