baber/WOPTO huggingface dataset:
Patent GB-175815-A (GB)
Title: Improvements in and relating to electric motor control
IPC: H02P1/20
Filed: 1920-12-09
Abstract: 175,815. British Thomson - Houston Co., Ltd., (General Electric Co.). Dec. 9, 1920. Systems for continuous-current motors.-In starting or otherwise controlling electric motors, the successive short-circuiting of resistances is made to depend on automatic electromagnetic contactors or relays having two windings, one of which is short-circuited in a previous stage of the control, while the other is left connected across some of the resistances so as to respond when the current passing through the motor armature rises or falls to a designed value as the motor slows down or speeds up. As applied to the starting of a series motor, Fig. 8, three electromagnetic contacts 71, 72, 74 are mechanically biassed to short-circuit three resistances R<11>, R<12>, R<13>. One winding of each contactor is connected between the supply side of a starting-switch 70 and one end of the corresponding resistance, while the second winding of each contactor is connected across the two ends of the corresponding resistance. When the switch 70 is closed, the first winding of the contactor 71 is short-circuited and the second winding remains excited proportionally to the potential difference across the resistance R", so that the first contactor closes when the motor current falls off sufficiently as the armature speeds up. The closure of the first contactor short-circuits one winding of the contactor 72 and leaves the second winding to act responsively to a further increment of speed. A similar process is carried on automatically to the end of the sequence. In a modification, the responsive windings energize relays which control contactors of ordinary type. Another modification employs relays mechanically biassed to open and contacts biassed to close. Further modifications provide a pair of initially acting contactors or relays, corresponding to 71 in Fig. 8, but arranged to come into action alternatively according to the direction of running. Provision may also be made for ensuring that resistances are in the motor circuit when current restarts after a failure. A further modification shown in Fig. 4 relates to the lowering sequence of a hoist motor. An automatic relay 48 having two windings respectively connected across resistances R<5>, R<6>, so long as it is energized, keeps a contactor 46 closed and another contactor 47 open. The closed circuit through 46 and R<6> contains a coil B which holds a brake out of action, and this circuit remains closed after power has been turned off from the motor, owing to the relay having its active coil excited proportionally to the potential difference across R<6> from the motor working as a generator. When the speed falls off sufficiently, the relay opens, the brake is allowed to act, and the contactor 47 completes a rheostatic brake circuit through R<7>.
Patent GB-1072323-A (GB)
Title: Improvements in or relating to compatible single side band transmitters
IPC: H03C1/60
Filed: 1964-08-26
Abstract: 1,072,323. Compatible single - side band transmitters. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. Aug. 26, 1964 [Sept. 13, 1963], No. 34933 /64. Heading H3R. In a compatible SSB transmitter one sideband is suppressed and the detected amplitude modulated output therefrom compared with the original modulation to derive a difference voltage used for amplitude modulating a portion of the SSB signal wave after clipping thereof to constant amplitude, and adding a selected sideband of this to the original SSB output. This operation is repeated successively until the SSB output has amplitude, frequency and phase components producing a compatible waveform. The detected amplitude modulation may be derived from the input to the adding circuit (compensation method) or from its output (negative feedback system). Alternatively, the SSB output may be limited, remodulated and passed through a SSB filter, this operation being repeated a number of times so that a compatible SSB wave is finally reached. Delay equalization units may be added after each SSB filter and in series with the parallel fed complementary signal path (main channel or modulation channel) to avoid undesired relative phase-shifts.
Patent GB-416567-A (GB)
Title: Improvements in gear changing mechanisms
IPC: F16H63/46
Filed: 1932-12-10
Abstract: 416,567. Gear-changing mechanism. HUMFREY, J. C. W., HINGSTON, W. H., and ASSOCIATED TRANSMISSIONS, Ltd., 40, Grosvenor Gardens, London. Dec. 10, 1932, No. 35079. [Class 80 (ii).] In a gear-changing mechanism of the sliding gear or dog type in which the gearbox can be isolated at both ends or alternatively at the driving end with means for synchronizing the gears. A pre-selective gear-changing mechanism comprises a gear lever working in a gate which is connected to the operating part of the lever a by a spring or flexible coupling. The operating part a of the lever is held by the engagement of a pin a<0> with stops or pawls b and c irrespective of the position of the lever in the gate. The pawls band c are connected to the clutch or a similar control by a rod e and are raised on the operation of the clutch to release the lever a which operates the selector rods under the tension of the coupling spring as determined by the position of the selecting lever in the gate. In a modification, the end of the gear lever is formed as a cam which on movement energizes a spring-pressed plunger engaging with the selector forks, the selector forks being held by stops engaging in notches until released by operation of the clutch or other pedal.
Patent GB-192048-A (GB)
Title: High pressure water tube boilers
IPC: F22B19/00
Filed: 1922-12-28
Abstract: 192,048. Babcock & Wilcox, Ltd., (Assignees of Deutsche Babcock-&-Wilcox Dampfkessel-Werke Akt.-Ges.). Jan. 19, 1922, [Convention date]. Water-tube boilers. -In a water-tube boiler with front and rear headers which are so connected that the water circulates in two or more separate paths, an upper drum arranged with its axis parallel to the plane of the headers is provided in each path. The middle front headers 3, Figs. 1 and 2, are connected to a drum 5 by tubes 4, and the outer front headers 6, 7 to drums 10, 11 by tubes 8, 9, return tubes 24 connecting the drums to the corresponding rear headers. The drums are interconnected by tubes 13. The outer group of generating tubes 8<1>, 9<1>, Fig. 3, opening into headers connected to a drum 10 are arranged in flue spaces divided off from the combination chamber by walls 16. The drum 10 is fitted with a partition which directs the feed through the outer groups of tubes before entering the middle group. The generating tubes may be inclined to the vertical instead of to the horizontal as shown.
Patent GB-803529-A (GB)
Title: Improvements in or relating to sleeve nuts
IPC: F16B39/22
Filed: 1955-12-08
Abstract: 803,529. Locking nuts. NITSCHE, K. P. W. Dec. 8, 1955, No. 35294/55. Class 89(1) A lock-nut comprises an internally-screwed sleeve having an externallytapered main body-part 1 and a more steeplytapered part 5 at the smaller-end of part 1, thus defining an edge 6. When a bolt in o cylindrical bore through a workpiece is tightened in the nut, the nut is first drawn into the bore to a limited extent until shoulder 3 abuts the bottom of a recess. Continued tightening causes outward deformation around the edge 6 to cause said edge to bite into the bore wall and anchor the nut therein. The consequent deformation of the nut-thread locks the bolt to the nut.
Patent GB-451635-A (GB)
Title: Improvements in or relating to rectifying circuits containing an ionic valve
IPC: H01J17/20
Filed: 1935-12-20
Abstract: 451,635. Discharge rectifiers. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. Dec. 20, 1935, No. 35367. Convention date, Jan. 30. Drawings to Specification. [Class 39 (i)] A rectifying circuit comprises an ionic valve which contains an incandescent cathode and a filling of krypton or xenon or both at a pressure of 1À5 mm. at the most and is operated on an anode voltage the virtual value of which does not exceed 100. One or more metal vapours, such as mercury, may be added. The valve may be provided with two anodes and a filling of xenon at 0À7 mm. Values of the gas pressure and of the voltage are contained in the Specification.
Patent GB-1118282-A (GB)
Title: Improvements in or relating to nuclear fuel elements
Inventor: DABOSI FRANCIS
IPC: G21C3/20
Filed: 1965-08-18
Abstract: 1,118,282. Nuclear fuel elements. COMMISSARIAT A L'ENERGIE ATOMIQUE. 18 Aug., 1965 [20 Aug., 1964], No. 35505/65. Heading G6C. In order to prevent plutonium diffusing through the outer magnesium alloy sheath of a uranium alloy fuel rod, an inner sheath is provided made of an alloy of magnesium containing 0-1 to 5% by weight of aluminium. The inner sheath may be one-tenth to a half the total thickness of the two sheaths. The outer sheath may be made of a Mg alloy containing a small amount of Zr or Zr and Mn. Other components of the inner sheath alloy may be Be, Si and Ce. The fuel can comprising the two sheaths may be made by co-lamination, co-spinning, or co-extrusion.
Patent GB-954631-A (GB)
Title: New monoazo dyestuffs
Inventor: ANDREW HERBERT FRANCIS
IPC: C09B62/085
Filed: 1959-10-20
Abstract: The invention comprises monoazo dyes which, in the acid form are represented by the formula <FORM:0954631/C3/1> where A stands for a benzene or naphthalene radical which is free from sulphonic acid groups and wherein the carboxylic acid group stands in meta-position to the azo group and the hydroxyl group stands in ortho position to the carboxylic group and <FORM:0954631/C3/2> stands for the radical of a naphthol coupling component carrying an hydroxyl group in ortho position to the azo group, or for the radical of a 5-pyrazolone coupling component linked at its 4-position to the azo group, B carrying at least 2 sulphonic or carboxylic acid groups, n stands for an integer up to 5 and X stands for a halogenated-s-triazine ring which may contain other substituents, a process for the preparation thereof which comprises diazotising a primary aromatic amine of the formula <FORM:0954631/C3/3> and coupling the diazonium compound so obtained with a coupling component of the formula <FORM:0954631/C3/4> and a modified process which comprises reacting together equimolecular proportions of a monoazo compound of the formula <FORM:0954631/C3/5> and a s-triazine containing 2 or 3 halogen atoms as nuclear substituents in the triazine nucleus and where the product so obtained still carries 2 halogen atoms attached to the triazine nucleus, if desired, reacting the said product further with 1 molecular proportion of ammonia or an organic mercapto- or hydroxyl compound or with an organic primary or secondary amine. Examples are furnished.  The dyes may be used for colouring silk, leather, wool, polyamides, polyurethanes and in particular cellulosic textile materials to which they may be applied in conjunction with an acid binding agent.  Specification 797,946 is referred to.
Patent GB-762341-A (GB)
Title: Machine tool
Inventor: CAMPBELL PAUL J
IPC: B23Q35/12
Filed: 1952-04-17
Abstract: 762,341. Copy-milling. PRATT & WHITNEY CO., Inc. April 17, 1952, No. 35557/54. Divided out of 762,271. Drawings to Specification. Class 83 (3). [Also in Group XXVIII] A machine-tool has a detachable tool-carrying head in which the tool is mounted for reciprocal movement, relative to a workpiece, under the control of a pair of electromagnetic-clutches producing opposed thrust-forces. The detailed description is identical with that of Specifications 762,271 and 762,342, [Group XXXVIII]. Specification 699,452 also is referred to.
Patent GB-1201196-A (GB)
Title: Improvements in or relating to the treatment of polypropylene and to methods of bonding with adhesives
Inventor: HANSEN RALPH HOLM
IPC: B32B27/00
Filed: 1967-08-03
Abstract: 1,201,196. Laminates. WESTERN ELECTRIC CO. Inc. 3 Aug., 1967 [11 Aug., 1966], No. 35610/67. Heading B5N. [Also in Division C3] Laminates may be prepared from polypropylene which has been treated to improve bond formation with adhesives by subjecting it for a period of at least one second to nitrous oxide which has been excited by a glow discharge therein. The nitrous oxide may be excited by applying a radio frequency current to a coil surrounding a tube by which the nitrous oxide passes to the polypropylene. The adhesive may be a polysulphide, silicone, polyamide or particularly epoxy resin adhesive. In an example aluminium sheets which have been degreased with trichloroethylene and etched with chromic acid are bonded to both sides of a polypropylene sheet which has been washed with acetone, treated with excited nitrous oxide and coated with an adhesive comprising diglycidyl ether of bisphenol A and diethylaminopropylamine.
Patent GB-957489-A (GB)
Title: Improvements relating to thermally responsive sealing devices
IPC: F16K1/228
Filed: 1961-10-03
Abstract: 957,489. Pipe joints; valves. GARRETT CORPORATION. Oct. 3, 1961 [Oct. 3, 1960], No. 35669/61. Headings F2G and F2V. A thermally-responsive device for use on a butterfly-type valve or for sealing an annular space between two concentric members, for example two pipes, comprises a sealing ring 17 having an inner portion 18 thereof secured to the inner member and an outer sealing portion 22 thereof extending in a generally axial direction within the space and engaging the bore of the outer member 10, and a buttress ring 25 mounted on the inner member and extending radially outwards therefrom to engage the inner side of the sealing portion, the materials of the two members, the sealing ring and the buttress ring being such that inwards movement of the inner portion of the sealing ring away from the outer member caused by reduction in temperature will be less than any inwards movement of the buttress ring so that the latter causes the sealing portion to flex outwardly and remain in sealing engagement with the bore of the outer member. As shown in Figs. 1 and 2, a pipe 10 is provided with a butterfly valve 11 comprising a pair of plates 12, 13 aligned by a ring 14 on the plate 12 and disposed in a groove 15 in the plate 13. The sealing ring 17 of synthetic plastic has a portion 18 held between the plates and sealed by an endless V-shaped rib 20, and includes a flange portion 22 engaging the pipe 10. The buttress ring 25 is mounted loosely in an annular groove 16 and has a curved portion 26 which provides a fulcrum for the ring 17. When, for example, liquid oxygen is passed through the pipe 10 upon opening of the valve 11 the parts of the device will due to contraction assume the relative positions shown in Fig. 2. In Fig. 3, a seal 36 for a slidably separable coupling between conduits 30, 31, is held in position by a bevelled retainer ring 38, and the portion 37 of the seal is held in operative contact with the conduit 31 by a ring 42 secured by an annular alignment spring 44 and a compensating member 45. All the parts of the device are held in adjustable operative relationship by a nut 46.
Patent GB-464913-A (GB)
Title: Improvements in clutches
IPC: F16D13/30
Filed: 1936-12-30
Abstract: 464,913. Friction clutches. TEBALDI, A. Dec. 30, 1936, No. 35728. Convention date, Dec. 30, 1935. [Class 80 (ii)] A clutch - engaging spring 3, arranged between the clutch member 2, movable axially on its shaft 10, and a flanged abutment 9 on the shaft 10, is acted upon at both ends, in opposite directions, by the disengaging means, so that the spring no longer reacts on the shaft 10 when the clutch is disengaged. At one end, the spring acts on the member 2 through a ring 5 slidable axially on a bush 11 mounted on the hub 21 of the member 2. The bush 11 is positioned axially on the hub 2<1> by an abutment ring 13 between which and the end of the bush 11 is disposed a loose washer 12 which limits the axial play of the bush 5 and thus ensures positive disengagement of the clutch. At the other end, the spring acts against the abutment 9 through a ring 7 which is slidable on a bush 8. Cams 17 and 18 secured to a control spindle 24 coact with one end of pairs of levers 16 and 22 pivotally mounted in the casing 14. The other ends of the levers 16 and 22 control the ring 5 and the ring 7 respectively through ball-bearing collars 19 and 26. When the clutch is engaged, the cams 17 and 18 are out of engagement with the levers, and the spring reacts between the member 2 and the abutment 9. By rotating the spindle 24, the cams act to move the rings 5, 7 towards each other. The ring 7 thus moves away from the abutment 9, so that the shaft 10 is no longer subjected to the reaction of the spring, while the ring 5 withdraws the member 2 from engagement with the co-operating clutch member 1.
Patent GB-1277336-A (GB)
Title: Improvements in or relating to travelling wave tubes
IPC: H01J23/26
Filed: 1970-07-23
Abstract: 1277336 Travelling-wave tubes SIEMENS AG 23 July 1970 [24 July 1969] 35729/70 Heading H1D A travelling-wave tube helix 10 is mounted within a metal envelope 1 by dielectric rods 3 and 31, an axially extending groove 4 in the envelope being located behind one of the rods and housing a spring 51 which applies inwardly directed pressure against the surface of the rod remote from the helix. As shown, the spring may consist of a slotted tube of oval crosssection, and two centring rods 7 may also be located in the groove. In other embodiments, the spring may consist of a corrugated strip (Figs. 1 and 2, not shown) or a U-shaped member (Fig. 4, not shown), and the spring may bear against a metal plate housed in the groove, which plate either itself bears against centring rods 7 (Figs. 2 and 6, not shown), or-dispensing with rods 7-is provided with a concave surface mating with that of the abutting rod 31 (Fig. 4, not shown). The envelope cross-section may be polygonal, with a rod at each corner, as in Fig. 3, or circular, with those dielectric rods which are not provided with a spring groove 4 having a locating groove formed in the envelope. Reference is made to the possibility of stressing the spring after insertion and assembly by the provision of a line of blind bores in the outer surface of the envelope along the groove 4, into which punches may be inserted to distort the envelope (Figs. 5 and 6, not shown).
Patent GB-856544-A (GB)
Title: Dispensing type closures for fluid containing receptacles
IPC: B65D47/24
Filed: 1958-11-08
Abstract: 856,544. Stoppers. LIBIT, S. M. Nov. 8, 1958, No. 35917/58. Class 125(3). A stopper for a container 14 comprises a body 10 with a hole 21 passing therethrough and a part 11 vertically movable between a closed position when a plug 29 fixed to the body 10 engages a hole 41 passing through a plug 11 and an open position when shoulders 36 and 19 on the respective parts 11 and 10 are in engagement. In a modification a circumferential rib on the plug 11 engages an annular groove on the body part in the closed position and in a further modification a plug fixed to the vertically movable part engages a hole in the body part. A further embodiment describes the movable part closing against a flat plate.
Patent GB-803007-A (GB)
Title: Improvements in and relating to mountings for electric plug-in meters
Inventor: SCHMIDT STANLEY ALBERT
IPC: G01R11/04
Filed: 1956-11-23
Abstract: 803,007. Two-part couplings. GENERAL ELECTRIC CO. Nov. 23, 1956, No. 35960/56. Class 38 (1). In a socket for mounting a meter, two pairs of interchangeable contacts are provided, one pair of " right-handed " and one pair of " lefthanded contacts which are otherwise identical. Each contact comprises resilient jaws 19, 23 to receive a blade on the meter, the jaw 19 being integral with a strap 18 and bent twice with respect thereto, the end of jaw 19 being bent the second time either in a right or a left-hand twist to provide the pairs of contacts, i.e. in the upper left and lower right-hand corners of the box 11 and in the upper right and lower left-hand corners (Fig. 5) the contacts being interchangeable so that the meter may be mounted horizontally (Fig. 4), not shown). The portion 21 of strap 18 fits into slots 36 in a yoke 24 secured on an insulating member 25 by a bolt 35 or by a shouldered bolt 35<SP>1</SP> (Fig. 11) to provide a floating mounting. Each contact has a wire terminal comprising a member 41 with a threaded portion 39 screwing into a threaded end of a hollow screw 38, normally so that the portion 39 clears the internal threads in the screw, a spring 42 biasing the member 41, the assembly 38, 42, 41 being tightened on to a wire inserted in the yoke which forces the member 41 into screw 38 until face 43 abuts edge 44 so that spring 42 is in compression. A round receptacle 47 may be used (Fig. 7), each contact comprising a spring clip 59 riveted to a strap 57 brazed to a strap 58 which engages slots in yoke 52, the threaded terminal 55 being received in a bridging member 54, the ends of which cooperate with slots in yoke legs 53. Screw 56 is shouldered and co-operates with yoke and base to provide a floating mounting. The terminal and yoke are formed slightly differently in Figs. 9 and 10, not shown. In yet another embodiment, Figs. 12 and 13 (and Figs. 14 and 15, not shown) a spring contact 84 is mounted on the end of a strap 80 having a yoke 81 integral therewith, a slot 93 and tongue 91 of a strap 89 co-operating with a tongue 94 and slot 92 of the yoke, the terminal screw 95 projecting into the strap 89. The assembly is mounted on a hollow pedestal 66 by a screw 85. One pair of contacts is constructed as shown, i.e. the upper left and lower right-hand contact, the other pair being identical with the exception that the yoke is on the left-hand side of its end 79 of strap 80.
Patent GB-765098-A (GB)
Title: Improvements in and relating to weather-excluding strip
IPC: E06B7/232
Filed: 1953-12-28
Abstract: 765,098. Draught excluders. CHAMBERLIN WEATHERS TRIPS, Ltd. (Chamberlin Co. of America, Inc.). Dec. 13, 1954 [Dec. 28, 1953], No. 36002/53. Class 20(3) A weather excluding metal strip for fixing to the frames of metal casement windows or doors is bent to provide a channel portion 1 which engages the flange 3 of the frame and a flap portion 2 which engages the sash 16 or door when the latter is closed. A strip for use at the head and latch side of a casement frame, Fig. 4, has one wall of channel 1 deeper than the other and near its outer edge is bent away from the channel along line 7. Near line 7 the strip is bent through 180 degrees and then bent away from the channel along a line immediately in front of line 7 to form the flap portion 2. The lateral edges of the strip are inturned. In a modification, Fig. 5, for use at the hinge side of the frame the portion 2 is obtusely bent away from the channel along a line 8 in addition to the other bends. A strip for use at the sill side of a frame, Fig. 4, comprises a channel portion 1 having a rounded yoke and the flap portion 2 is bent to lie closely around the yoke. The strips are secured to the frame by self tapping screws: