baber/WOPTO huggingface dataset:
Patent GB-686141-A (GB)
Title: Improvements in clutch brakes, particularly for use with electric motors
IPC: H02K7/112
Filed: 1950-11-13
Abstract: 686,141. Friction clutches. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 13, 1950 [Nov. 14, 1949], No. 27679/50. Class 80 (ii). [Also in Group XXXIV] A magnetic clutch-brake, for a shaft 2 driven by the armature 1 of an electric motor, comprises, for the brake, a permanent disc-magnet 8 fast on the shaft 2 and providing a closed flux-path including the fixed outer casing 6, a fixed disc 13 and two air-gaps 10, 14, the former, 10, of which has retained therein by seals 24 a suspension of powdered magnetic iron in oil, which, when under the influence of the flux, brakes the magnet-disc 8 and shaft 2, whilst energisation of a fixed winding 20 cancels the permanent magnet flux and substitutes a flux circuit through the fixed disc 13, air-gap 14, shaft 2 and a disc 15 keyed therein, air-gap 27, cup 17 keyed to the motor shaft 1, air-gap 19 and casing 6, the air-gap 27 containing magnetic fluid, as 10, which clutches together the shafts 1, 2 as the brake 8, 6 is released. The winding 20 may be in the energising circuit of the motor so that reduction in motor-current on light load reduces the winding-flux below that of the permanent magnet, which latter then applies the brake to prevent overspeeding. A groove 29 prevents demagnetising of the permanent magnet 8 under sustained overload, and a damping ring 30 on the shaft 2 protects the magnet 8 against excessive starting current. Specification 649,553 is referred to.
Patent GB-1065913-A (GB)
Title: In continuously operating butter machines,a method of separating buttermilk and butter granules as well as a device thereof
IPC: A01J15/12
Filed: 1964-07-06
Abstract: 1,065,913. Separating butter and buttermilk. ALFA-LAVAL A.B. July 6, 1964 [July 10, 1963], No. 27738/64. Heading A2B. A mixture of butter granules and butermilk is discharged on to an endless running screen-belt provided with solidscollecting members, for example crossstrips of which, at the lower side of the belt, at least several extend below the surface of the buttermilk to carry the granules up to the upper side of the belt, where they are washed and discharged together with the wash-water, the buttermilk, free of wash-water, being discharged separately. In Fig. 1, buttermilk and butter granules are discharged from churn 2 via shoot 6 into separator 1, which contains an endless screen-belt 7, fitted with crossstrips 12, running in the direction of the arrow. The buttermilk level is maintained by partition 10 and butermilk discharge conduit 15. The butter granules picked up from the buttermilk are compressed in space 18, and washed by water from spray 13. The washed granules are discharged, together with the wash-water, into kneader 3 via port 11. The belt may be subject to vibrations.
Patent GB-1514982-A (GB)
Title: Signal discrimination circuitry in an electronic security system
IPC: G08B13/24
Filed: 1975-07-01
Abstract: 1514982 Theft prevention system G J LICHTBLAU 1 July 1975 [2 July 1974] 27759/75 Heading G4N [Also in Division H4] In an electronic security system for providing in a surveillance zone a swept frequency electromagnetic field and having means for detecting the presence of a resonant tag, a circuit for discriminating between signals indicating the presence of a valid tag and spurious signals comprising at least one pulse threshold detector passing only pulses having an amplitude and duration greater than predetermined limits in response to at least one enabling signals Ea ... En and means 74 for defining a predetermined time interval for detection of an expected signal in response to the detection of a first pulse component thereof and further means 76, 78 operative in response to detection of all components comprised in the expected signal in said predetermined time interval to provide an alarm. The invention is applicable to an antishoplifting system in which a resonant tag is attached to each article and, in response to a swept frequency transmitter, provides a received signal 32 which after full-wave detection results in signals 34 ... 36 (Fig. 2B). Fig. 2C shows the same signal on a larger time scale which is fed along a common line 71 to optional video-frequency filters 80 and amplifiers 81 and then to a first amplitude and time discriminater SPM-I normally enabled by a signal Ea from a counter 76 and decoder 78. The stage SPM-1 passes a pulse 41 (Fig. 2D) and, after a time delay T1, a pulse 60 is passed via an OR gate to step a counter 76 and change the output of decoder 78 so as to'terminate the enabling signal Ea and initiate enabling signal Eb which allows the stage SPM-2 to operate on signal 36 and pass a pulse 43. After a further time delay T2, a further pulse is passed by OR gate 72 to step counter 76 and decoder 78 one stage further. This process continues until a monostable multivibrator 74, triggered by pulse 60 is timed out when the system is reset. If the complete expected pulse waveform appears, an alarm is operated by an output of counter 76.
Patent GB-735612-A (GB)
Title: Device for rocking bobbins of thread during winding in quick-traverse winding machines
IPC: B65H54/54
Filed: 1953-10-09
Abstract: 735,612. Winding yarn. MASCHINENFABRIK SCHWEITER AKT.-GES. Oct. 9, 1953 [Nov. 20, 1952], No. 27784/53. Class 120(2).  A device for rocking a bobbin of thread 2 about a transverse axis during the winding operation on a quick-traverse frame, is characterised in that the pivot member 6 about which the bobbin rocks is mounted in a fixed bearing 7 the axis of which is arranged at a distance r from the plane E passing through the line of contact of the bobbin 2 and the driving traverse cylinder 1, the distance r being at least one-fifth of the length of the cylinder 1. The rocking is effected by a driven pulley 11 acting through a crank 10 and slotted lever 8 attached to the pivot member 6. The axis of the member 6 may be at a distance r above the plane E.
Patent GB-751846-A (GB)
Title: Improvements relating to turnstile registering apparatus
IPC: H03K21/00
Filed: 1952-11-05
Abstract: 751,846. Counting apparatus; transfer mechanism; turnstiles. SMITH, H. J. Feb. 5, 1954 [Nov. 5, 1952], No. 27864/52. Classes 106 (1) and 106 (3). A turnstile electrical entry registering apparatus comprises a pair of switches actuated respectively, by means associated with the turnstile, at the beginning and end of a rotary movement of the turnstile and electrical counting means operated by the successive operation of said switches. The arrangement is such that oscillation of the turnstile about its normally closed position does not effect actuation of the switches. The normally open switch K1, Fig. 1, and the normally closed switch K2 are connected to the relay T/4 as shown. At each entry the turnstile moves through 90 degrees and a cam fixed thereto first closes the switch K1 then towards the end of the turnstile movement the cam opens the contact K2. 'Upon closing of K1 relay T/4 is energized and by closing T1 establishes a selfholding circuit through K2. Delayed action relay M/1 is energized by closing of T3 and closes M1. Upon de-energization of relay T/4 to close T2 the driving magnet UDM of the first order of a counter comprising rotary selector switches U, D, C, M is energized and the counter is thereupon stepped on by one unit. During the energization of T/4 an alarm lamp is lit. The rotary selector switches each have four banks of contacts, the first banks U1, D1, C1, M1 are connected to indicator display lamps, the second banks U2, D2, C2, M2 are interconnected for transfer between denominations, the wipers of the third banks U3, D3, C3, M3 are connected to the assigner means of a grand total counter common to a number of turnstile counters and the fourth banks U4, D4, C4, M4 are used in zeroizing the turnstile counter. The grand total counter comprises a pair of assigners, only one of which is shown, formed by a rotary selector switch CA having four banks CA1, CA2, CA3, CA4, Fig. 4, and a pair of impulsers or collectors, only one of which is shown, formed by a rotary selector switch CP having three banks CP1, CP2, CP3. Associated with the assigner switch and collector switch are the relays ST, A, S, RH, I. The arrangement is such that the assigners CA and impulsers transmit in succession the " units " and " tens " registration and simultaneously the " hundreds " and " thousands " registration of each turnstile counter in succession to a grand total counter also comprising rotary selector switches.
Patent GB-260776-A (GB)
Title: Improvements in cyclone separators or driers
IPC: B04C5/02
Filed: 1925-11-05
Abstract: 260,776. Wood, W. R. Nov. 5, 1925. Density separators.-A cyclone separator or drier has two coaxial cones a, b between which is fixed a helical partition c making one complete turn round the axis. The fluid enters tangentially through the pipe f and leaves. by the outlet pipe d which rises, as shown, from the inner cone b and is of Venturi form to increase the pitch of the helical movement of the fluid. The pipe d may be provided with guide plates or ribs.
Patent GB-287420-A (GB)
Title: Improvements in automobile sanders
IPC: B60B39/04
Filed: 1927-10-20
Abstract: 287,420. Robinson, E. P. Oct. 20, 1927. Sand, distributing on wheel brakes. - In a sanding-appliance for use on motor-vehicles of the kind in which a sand-containing hopper is mounted under the running-board, the hopper is provided with filling-means which pass through the running-board. In the construction shown in Fig. 2, the filling-means comprises a sleeve 15 which, at its lower end, has a flange 20 whereby the cover 14 of the hopper 13 is held tightly against the under side of the running-board 18, and, at its upper end, is screw-threaded to receive a securing-nut 17 which in turn receives the cap 19 closing the filling opening. The lower end. of the hopper is fitted with the usual discharge spout 2.2 having a slide valve 25 operable from the driver's seat by a wire 27. In a modification, Fig. 4, the hopper 30 and footboard 32 are formed integrally from a single metallic stamping, the running-board in this case being provided with a filling opening and closure cap.
Patent GB-935676-A (GB)
Title: A row of coupling links for sliding clasp fasteners and a method and machine for making same
IPC: B29D5/04
Filed: 1961-08-01
Abstract: 935,676. Sliding clasp fasteners. H. HANSEN. Aug. 1, 1961 [Nov. 8, 1960], No. 27902/61. Class 44. [Also in Group V] A row of coupling links for a sliding clasp fastener comprises a series of loops having their flank portions 17 close together and connected by members 16 and are characterized by flattened parts 20 both at the top of the loops and in the members 16. To make the row of coupling links, a filament 2 is fed between wheels 3 and 4 which bend it into a regular zig-zag form and also flatten the filament at the apex of each loop from which the filament passes to a flat guideway 5 having openings 26, 27 through which revolving brushes 28, 29 engage the filament. The brushes 28, 29 rotate at a higher speed than the wheels 3, 4 whereby the zig-zags of the filament are compressed and are fed to a jig 6 via a gear-wheel 30 operated by a slip-and-spring clutch represented by frictionally coupled discs 32 and 33 and spring-coupled discs 33 and 34. The jig 6 has teeth spaced apart the width of the filament and of sufficient depth to accept two thicknesses of filament, i.e. the flanks 17. When a spacing of the jig 6 is aligned with the end of the guideway the gearwheel 30 operated by the slip-and-spring clutch pushes the filament forward so that two flanks 17 engage in a spacing between two teeth of the jig which moves round thereby twisting the flanks so that the median plane of two adjacent flanks is at right-angles to the median plane of the row of coupling links.
Patent GB-296584-A (GB)
Title: Improvements in fusible lead alloys
IPC: C22C11/00
Filed: 1927-10-20
Abstract: 296,584. Marks, E. C. 'R., (American Machine & Foundry Co.). Oct. 20, 1927. Alloys.-A fusible alloy for use as a solder comprises lead, containing 0.05-0.1 per cent of lead phosphide, with or without a small proportion, for example 1 per cent, of a brightening metal such as aluminium, antimony, tin, or zinc.
Patent GB-225355-A (GB)
Title: Improvements relating to drilling apparatus
IPC: B23Q27/00
Filed: 1923-11-07
Abstract: 225,355. Hughes, J. W. Nov. 7, 1623. Drilling-machines; drills. -In a machine for drilling non-circular apertures the outer surface of the drillshank is formed of a plurality of circular arcs and the cavity of the drillguide has at least two opposing sides curved and in parallelism. The drillspindle co-operating with the guide is so designed that the aperture produced has sharp-corners. 'The cross-section of the drill-shank 16 is built up of four arcs 33, 34, 31 and 32 whose centres are at the points 36, 39, 36 and 37 respectively. The spindle is rotated in the guide 18 which has curved sides 20, 21 so that an aperture having a curved side 44 is formed in the work 42, in this instance a piston ring. As the spindle is rotated from the position shown in a clockwise direction the cutting-edge 41 of the drill pivots about the sharp corner 36 owing to the concentric arcs 33, 31. The spindle is rotated by a pulley and a laterally flexible joint and is fed axially by a hand lever and yoke.
Patent GB-1386969-A (GB)
Title: Explosive welding of a tube in a tubeplate
IPC: B23K20/08
Filed: 1971-06-15
Abstract: 1386969 Welding by pressure YORKSHIRE IMPERIAL METALS Ltd 9 June 1972 [15 June 1971] 28010/71 Heading B3R In explosively welding a metal tube to the wall of an aperture in a metal tube plate, the wall including one or more annular recesses each of which is bounded by two portions of the wall angularly inclined to the axis of the aperture, a charge which has a detonation velocity exceeding the sonic velocity of the metal having the higher sonic velocity and which is located within a tubular energy transmitting insert and separated from the insert by an annular air gap, is detonated within the tube the size of the air gap being such that a collison front travels over the said wall portions at a velocity not greater than 120% of the sonic velocity of the metal having the higher sonic velocity. The or each recess may be formed by two wall portions machined at about 15-12 degrees to the axis of the aperture or by assembling plates having tapered apertures therein. A die may be placed around the tube in abutment with the tube plate to prevent distortion. The tubular insert may be of polyethylene to fit closely the bore of the tube and the explosive charge, e.g. in the form of a detonator, may be supported coaxially within the insert by plugs in each end of the tube.
Patent GB-742156-A (GB)
Title: Improvements in variable electric resistance semi-conductor devices
IPC: G01L1/20
Filed: 1953-10-12
Abstract: 742,156. Electric indicating systems. APPLICATIONS ELECTRONIQUES DES CAOUTCHOUCS. Oct. 12, 1953 [Oct. 16, 1952], No. 28040/53. Class 40(1) In a displacement or pressure measuring system which utilises the variable resistance between an electrode and a resilient semiconductive material containing conductive particles, a vibratory movement is superimposed on one of the contact members throughout the measuring process. In the Figure, semiconductive element 5 consisting of rubber or the like impregnated with fine conductive particles such as carbon, is fixed to a support on diaphragm 9 so that it may be displaced by movement of mechanical contact member 8. Electrode 1 is carried by resilient support 2, which is vibrated by applying an alternating current to electromagnet 4 so that electrode 1 intermittently contacts the semiconductive element 5. A meter 12 is provided to indicate the resistance between electrodes 5 and 6 and thus measure the movement of or pressure applied to member 8. Establishing the intermittent contact for electrode 1, eliminates random variations in the contact resistance between the electrode and element 5. Specification 709,902 is referred to.
Patent GB-725119-A (GB)
Title: Magneto-electric machine for internal combustion engines
IPC: H02K21/22
Filed: 1953-10-12
Abstract: 725,119. Ignition generators. VAN DER HEEM N. V. Oct. 12, 1953 [Oct. 13, 1952], No. 28061/53. Class 35. A flywheel magneto has a stator with a core 1 carrying the ignition coil, the primary winding 2 of which being also used for lighting purposes. When the illumination is not required, a switch 5 is closed to shunt the lamps 3 and 4. The rotor may have two diametrically placed permanent magnets 12, or one such magnet counterbalanced by a contra weight.
Patent GB-909335-A (GB)
Title: Improvements in or relating to the production of semi-conductors
IPC: H01L21/00
Filed: 1959-08-18
Abstract: 909,335. Transistors. SIEMENS-SCHUCKERTWERK A.G. Aug. 18, 1959 [Sept. 30, 1958], No. 28190/59. Class 37. A process for producing PN junctions in a disc-shaped mono-crystalline semiconductor body comprises the steps of alloying a doped metallic foil to a flat surface of the body, removing the foil up to the recrystallization layer, and then alloying to said layer a second metallic foil doped by a substance characteristic of the opposite conductivity-type from that which doped the first foil, the second foil being thinner than the first foil. As shown, Fig. 2, in the production of a PNPN transistor, a foil 5 of Au-Bi alloy is alloyed to one surface of a disc 2 of high-ohmic p-type Si at 700- 900‹ C., preferably 800‹ C., to form an N-type region 4 after recrystallization. The foil 5 is removed by means of aqua regia, the said surface of disc 2 is lapped plane, and a foil 10, Fig. 6, of Au-B-Bi alloy (which is predominantly characteristic of P-type conductivity) or of Al, of smaller area and thinner than foil 5, is alloyed centrally to the region 4 to produceP-type region 9. At the same time, a Au foil 11 N-doped with, e.g. 0.5% Sb, is alloyed to another part of the N-type region 4, and a similarly doped foil 13 is alloyed to the opposite surface of the disc 2 to produce a second N-type region 12. Preferably, foil 11 is annular and is placed over the exposed junction defining N-type region 4 so that, upon alloying, the latter region is extended as shown. To produce a PNIP transistor, foil 13 may comprise Au-B-Bi alloy. When body 2 is of N-type conductivity, the first foil may be of A1, the second of Au-Sb alloy, and the foil on the opposite surface of the body may be of Al or Au-B-Bi to produce a PNPN element, or of Au-Sb to produce an NPIN element; the use of HCl or H 2 SO 4  to remove the first foil is mentioned in this case. All the alloying processes may be carried out with the assembly embedded under pressure in an inert powder, as described in Specifications 827,762 and 840,241. Specification 908,103 also is referred to.
Patent GB-757892-A (GB)
Title: Improvements relating to the electrolytic production of copper foils
Inventor: HOUGHTON THOMAS LESLIE
IPC: C25D5/16
Filed: 1952-11-08
Abstract: 757,892. Electrodeposited copper foils. FERRANTI, Ltd. Nov. 9, 1963 [Nov. 8, 1952], No. 28201/52. Class 41. Copper foil having a rough surface suitable for bonding by adhesive to a phenolic resinbonded laminated sheet is produced by copperplating on a metal base member in an acid copper bath with agitation at a cathode current density of 80 to 110 amps./sq. ft. for a period of 5 to 17 minutes, cleansing the deposited surface, and plating on said deposited surface in a cyanide copper bath without agitation at a cathode current density of 45 to 50 amps./sq. ft. until the desired total thickness of foil resulting from both plating steps is reached, e.g. for 10 to 12 minutes. The metal base member may be a copper foil which is then incorporated in the final foil or a sheet of brass dipped successively in silver cyanide and iodine so that the deposited copper foil may be detached from it.
Patent GB-318577-A (GB)
Title: Improvements in or relating to foldable umbrellas and the like
IPC: A45B19/10
Filed: 1928-10-02
Abstract: 318,577. Horowitz, S. Sept. 6, 1928, [Convention date]. Folding, telescopic, and like; holding open and closed.-A foldable umbrella with telescoping stick 2, 3 and divided ribs 6, 7, the portions of the ribs being connected together by joints 8 enabling the outer portions to be folded upwards and outwards, as in Fig. 3, is characterized in that struts 9 are coupled about the middle of inner ribs 6 and are equal to, or less than, half the length of these ribs, so that the sleeve 10 in closing can be drawn away from the apex of the umbrella, and not towards it as in known constructions. 'The inner half of the rib 6 has an extension 14 serving as a support for the outer half 7. Rounded ends 15 are provided to prevent tearing. The sleeve 10 engages a catch consisting of a plate spring 16 fastened to the tube stick 2 and having a projection 17, the interior of the tube remaining free for the part 3 to telescope into it.
Patent GB-158719-A (GB)
Title: Improvements in governors for steam engines
IPC: G05D13/08
Filed: 1919-11-14
Abstract: 158,719. Davey, Paxman, & Co., Ltd., and Barnes, C. Nov. 14, 1919. Centrifugal governors. - One weight d<1> of a shaft governor is loaded by a spring m and is connected to the other weight d by a link e. A pin r on the weight d engages a removable block o fitting in a recess n in a sliding plate c carrying the eccentric sheave. For reversing, the block o is transferred to a recess n<1> at the other end of the plate so as to engage a pin r<1> on the other weight d<1>.
Patent GB-216792-A (GB)
Title: Improvements in and relating to apparatus for extinguishing and preventing fires in aircraft and motor-vehicles
IPC: A62C99/00
Filed: 1923-11-10
Abstract: 216,792. Boisseau, A. L. Nov. 10, 1923. Drawings to Specification. Alarms operated by fusible and inflammable devices. - In apparatus for extinguishing and preventing fire in aircraft and motor-vehicles by directing a fire-extinguishing liquid through pipes to any required part, a warning of fire in the carburettor or other part is given by means of fusible or combustible wires connected to spring- actuated levers adapted to bring signal discs in front of observation openings in a casing arranged in front of the pilot.