baber/WOPTO huggingface dataset:
Patent GB-891889-A (GB)
Title: Electromagnetic relay
IPC: H01H50/34
Filed: 1958-06-27
Abstract: 891,889. Electromagnetic interrupters. MENZEL, F. June 27, 1958, No. 20773/58. Class 38 (5). The mounting spring of a relay armature is secured to a bendable bimetal support allowing manual setting of the relay operating valves and contact pressure and ambient temperature compensation. As shown, a set of voltage regulator relays 11, 12, 13 having a common base 10 and cover have armatures 47 each secured by a rivet 62 and holding member 60 to a blade spring 57. The latter are secured by rivets 76 and holding members 75 to L-shaped bimetal supports 71 attached at 70 to respective U-shaped cores 40 each having a limb 45 carrying windings such as 30, 31. The end 73 of a support 71 may be gripped by hand or by a pair of pliers to bend the support 71 and set the contact pressure at contacts 32, 33 and the position of rest of the armature. The support 71 will also bend automatically with change of temperature due to either heat conducted from the other relay parts or heat from the surrounding air.
Patent GB-1007576-A (GB)
Title: Improvements in or relating to endless conveyors
IPC: B65G17/12
Filed: 1964-05-20
Abstract: 1,007,576. Endless elevator conveyers. H. KNAUST AND U. VON KRITTER. May 20, 1964, No. 20792/64. Heading B8A. The buckets of an endless elevator conveyer which is normally operated at an incline of at least 30 degrees are formed with overlapping walls to prevent entry of conveyed material between consecutive buckets. As shown in Fig. 2, a bucket 14 is secured to every second link 15 of a chain 13 and has a rear wall portion 21 which, when the buckets are travelling on the straight runs of the chain 13, extends over the front wall 18 of the following bucket. Every fifth bucket carries wheels 22 which are guided on rails (not shown). In Fig. 5, on the straight runs of the conveyer, a lip 26 of the front wall of the bucket 14a extends over the rear wall 27 of the preceding bucket. In a further construction, Fig. 8, buckets 14b are carried on two chains 31 provided with enlarged links 33 to which lugs 34 are attached. The buckets are attached to the chains by a pin 35 engaging a slot in the lug 34 and by a shaft 32 which engages the links 33. The rear walls of the buckets have lips 43.
Patent GB-1470850-A (GB)
Title: Moulding poder
IPC: B29C67/04
Filed: 1974-05-10
Abstract: 1470850 Polythene moulding powder ALLIED CHEMICAL CORP 10 May 1974 20806/74 Heading B5A Particles of a linear polyethylene of M.W. of at least 10<SP>6</SP>, S.G. of 0À92 to 0-99, mean particle size less than 100 Ám., and particle size distribution function of less than 0À8, are moulded below their crystalline melting point at a pressure of at least 200 p.s.i. to form a preform which is then sintered freely above the crystalline melting point to form a solid article of tensile strength at least 4,000 p.s.i. and ultilmate elongation at least 200%. The polyethylene may be a homopolymer or a copolymer of ethylene with another α-olefin. The particles may contain stabilizers and fillers and are ground in a circulating air mill to the desired size. The particles are compressed in a mould to form a preform which is removed from the mould and gradually heated in an inert atmosphere to a sintering temperature of 275 to 350 C. at which it is held for 2 to 4 hours before gradual cooling. The particles may be heated and partly melted in the compression step.
Patent GB-670536-A (GB)
Title: Improvements in and relating to alternating current electric measuring circuit arrangements
Inventor: BAXTER PHILIP
IPC: G01R11/42
Filed: 1949-08-10
Abstract: 670,536. Volt-amp. meters. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. July 4, 1950 [Aug. 10, 1949; Aug. 26, 1949], Nos. 20836/49 and 22283/49. Class 37. In a wattmeter or watt-hour-meter, the current winding is controlled by a transductor so that the meter responds to volt-amps. or volt-amp.-hours irrespective of the power factor of the circuit. As shown for a singlephase circuit, a wattmeter M is connected in a circuit such that its voltage coil 1 is energized by the voltage across a resistor 8 across the supply leads 6, 7, and its current coil 2 is in series with the output windings 4, 5 of a transductor T whose control winding 3 is energized by the rectified current of the secondary of a current transformer 10 connected in one supply lead 6. Thus the reading of the meter M is independent of the power factor of the supply, the phase angle between the currents in the two windings 1, 2 being produced by an inductor 9 in series with the adjustable resistor 8 to give any required phase angle difference. Alternatively the transductor may be associated with the voltage coil instead of the current coil. For an unbalanced 3-phase system, three transductors may be used associated with a 3-phase meter, and for a balanced 3-phase system a 1-phase meter may be used with the windings energized from any two phases, and the transductor control effected by the sum of the separate phase currents.
Patent GB-224607-A (GB)
Title: Improvements in mixing and agitating machines
IPC: B01F7/16
Filed: 1923-08-16
Abstract: 224,607. Aluminium Plant & Vessel Co., Ltd., and Gough, W. F. Aug. 16, 1923. Stationary batch-mixers with rotary stirrers.- In a mixing machine of the kind comprising oppositely-rotated concentric beaters, the driving-gear is mounted on an arm which is close up to the pan and can be raised and lowered by self-contained power or manually-operated gearing. Means are provided to prevent clashing of the gears when the beaters are lowered into operative position, and the raising and lowering means can only be operated when the main drive is inoperative. In the form shown, the beaters 5 are driven from a horizontal shaft 36 carried by an arm 4 and driven intermediate gearing from a shaft 18. The arm 4 is raised by means of a nut 13 engaging a vertical screw 14, which is enclosed in a telescopic sheath 29 and is driven by bevel gears 20, 22 either of which may be clutched to a shaft 19<a> driven from a pulley 28 integral with the loose pulley 16 of the main driving gear. Tappets 25, 26 on a vertical rod 24 throw the clutch gear out of operation at the end of the travel of the arm 4. The main pulley may be mounted on the shaft 19<a> and drive the shaft 18 through variable-speed beltgearing. The raising and lowering gearing may be hand-operated and comprise a winch mounted on the main frame, a locking-dog being provided which is released on moving the belt on the loose pulley. Clashing of the teeth is prevented when the mixing-blades are lowered by providing the arm 4 with a pivoted dog 47, Fig. 6, which, when the arm 4 with the gears 34, 35 thereon is approaching its lower position, engages a ratchet 48 integral with the driving pinion 33 to effect rolling engagement of the gears 33, 34. On the upward movement of the arm, engagement of the ratchet with the dog 47 is prevented by a pivoted cover 49.
Patent GB-155254-A (GB)
Title: Improvements in thermionic tube element arrangements
IPC: H01J1/13
Filed: 1920-07-12
Abstract: 155,254. Latour, M. March 5, 1919, [Convention date]. Void [Published under Sect. 91 of the Act]. Open to inspection under Sect. 91 of the Act. Dec. 2, 1920. Vacuum tubes.-The filament of a thermionic valve 1 of an amplifying system is heated by current from the high voltage mains by including a resistance 6 and inductive choke 8 in series with the heating circuit, and shunting the filament bv a resistance 7. The heating current may be regulated by varying the resistance 7.
Patent GB-149909-A (GB)
Title: Gas soldering tool
IPC: B23K3/02
Filed: 1920-07-12
Abstract: 149,909. Burkhardt, E. June 18, 1919, [Convention date]. Void [Published under Sect. 91 of the Act]. Soldering. - In a gasheated soldering-iron of the type in which the flame strikes the pointed rear end of a bite, which is secured by a set-screw in a sleeve a constructed so as to provide two lateral channels x for the products of combustion, the burner nozzle c has a number of holes uniformly inclined to the axis of the nozzle so as to produce a pointed flame. In the form shown, one central hole is surrounded by six converging holes. A gas pipe is secured to a tubular connexion, which may be straight as shown at b, Fig. 4, or curved. Air for combustion enters by the holes g, and to prevent fluttering of the flame additional air holes h are also provided. The sleeve is formed with flats y so as to fit the bit on two sides, which are heated by conduction therefrom. The upper end of one of the flats is bevelled to facilitate operation when the bit has been reduced in length by repeated re-forging.
Patent GB-238710-A (GB)
Title: An improved spindle and rove-stopping assembly for spinning frames and like textile machinery
IPC: D01H13/16
Filed: 1924-09-05
Abstract: 238,710. Fraser, G., Fraser, N., and Fraser, J. Sept. 5, 1924. Stop - apparatus, non - a u t o m a t i c ; delivery, stopping.-A pedal lever 8, when operated to stop the spindle of a spinning-frame or like machine, is adapted to operate mechanism by means of a lever 10 and a link 14, whereby the roving is broken immediately above the lower pair of drawing - rollers. The spindle-driving gear may comprise apparatus such as described in Specifications 179,426, 214,054, and 216,796, wherein the spindle is frictionally driven by a disc 3 on a shaft at right angles thereto and is pivotally mounted on a rod 4 parallel to itself so as to be bodily movable towards and from the disc, or is arranged to be disengaged from the disc by other means. A lever 5 is rigidly secured to the shaft and is normally pressed by a hinged weight 6, which, when the pedal 8 is operated, is raised by the lever 10 and the pressure of the spindle wharl 2 against the disc is relieved. The rovestopping mechanism comprises a lever 15 provided with a pin 18 and pivoted on a pivoted bracket 20 which carries the pressing-roller 24 and a pin 19, so that when the pedal 8 is operated the link 14 rocks the lever 15 and causes the roving to be nipped between the pins 18, 19 and thereafter moves the bracket 20 against the action of the weight-lever 2& and removes the roller 24 from the feed-roller 25. The pedal acts as a toggle to maintain the spindle wharl and the roller 24 disengaged. The roving is broken by the continued rotation of the drawing rollers 31, 32.
Patent GB-570058-A (GB)
Title: Saw-tooth swaging apparatus
IPC: B23D63/06
Filed: 1943-12-14
Abstract: 570,058. Swaging saw teeth. MULLER AKT.-GES. BRUGG. Dec. 14, 1943, No. 20964. Convention date, Jan. 19. [Class 145 (ii)] Saw teeth are swaged to shape whilst held between dies that support the blade on all sides so that each tooth is equally formed. As applied to hand saws, the back of the saw is supported by an adjustable fence 4 carried by a bracket 3. Dies 1, 5 shaped at their corners to suit the tooth form are secured to the bed 2 and to a holder 6 pivoted at 18 on a slide 9 adjustable at 8 to suit the saw thickness. The blade is clamped between the dies with the tooth to be swaged supported on its rear face by a blade 16 slightly thinner than the saw so that clamping of the latter by the dies is not affected. Clamping pressure is applied by a screw 12 working in a bush 13 screwed into the frame and locked by a pin. Swaging pressure is applied by a die 25 adjustably supported in a holder 26 by a backing-up screw 27. The holder has a rotatable connection, formed to permit lateral assembly and removal of a pressure applying head 31 of a screw 38. Stroke is limited by a stop 37 that engages the lover or spanner operating the screw. When circular saws are to be swaged, the bracket 3 is replaced by a slotted bracket in which an adjustably clamped spindle carries a handled eccentric boss fitting the hole in the saw. Rotating the boss draws the saw clear of the dies to permit turning to the next tooth. The dies may have each of their eight corners cut to suit either the same or different shapes of teeth.
Patent GB-899736-A (GB)
Title: Improvements in or relating to flyweight governors
IPC: G05D13/00
Filed: 1958-07-01
Abstract: 899,736. Centrifugal governors. MINNEAPOLIS - HONEYWELL REGULATOR CO. July 1, 1958 [July 1, 1957], No. 21076/58. Class 57. [Also in Group XXIX] A centrifugal governor for operation immersed in a liquid, for example the liquid fuel of the engine being regulated, comprises two flyweights, or sets of flyweights, having different densities and acting in opposition to one another such that the governor is not adversely affected by changes in the density of the liquid. In the embodiment shown in Fig. 1, solid flyweights 10 and hollow flyweights 11 are attached to opposite ends of shafts 12 fixed to arms 14 pivoted at 15 on a rotatable valve insert 16 of a governor valve 9 and control the governor valve piston 24 which is loaded by a spring 20 adjusted by a cam 23 controlled by a negative feedback system including a servo 41 that maintains the radius of gyration of the flyweights, at a substantially constant value. The valve insert 16 has a drive shaft 33 extending through the casing 34 of liquid chamber 66 having an outlet 84. The piston 24 has lands 27 and 28, that normally cover ports 30 and 31 in the valve body 32 and insert 16, and a duct 25 extending from the bottom to a lateral port 26. High pressure liquid is supplied from line 79 to the space above the piston 75 of an output actuator 74, to the chamber 19 between lands 27 and 28 of valve piston 24 and from there to chamber 54 of the feedback servo 41. The underside of piston 75 is connected to a chamber 60 of servo 41 and to port 31 of valve 9. Port 30 is connected to chamber 52 below the follower piston 42 of servo 41. When the speed increases valve piston 24 rises and connects port 30 to chamber 19 to thereby raise piston 42 and increase the load on spring 20, thus tending to return the flyweights to their former positions, by operating cam 23 through rack 70 and pinion 71. At the same time, the pressure below piston 75 is relieved by port 31 being connected to chamber 66 via conduit 25 and by chamber 60 being connected to chamber 66 via port 61, chamber 62, port 45, chamber 63 and conduit 64; the piston 75 is thus moved down to operate regulator shaft 78. Conversely, when the speed decreases, piston 24 moves down, pressure is relieved beneath follower piston 42 which then moves down and decreases the load on spring 20, and pressure is applied beneath piston 75 and moves it up. The initial setting of the governor is regulated by a piston 40 slidable in the follower piston 42 and positioned by a cam 37 actuated by a handle 35. Instead of flyweights 10 and 11 being solid and hollow they may be of different material, for example steel and aluminium. In a modification, Fig. 2 (not shown), the flyweights are each carried on separate bell-crank arms.
Patent GB-404380-A (GB)
Title: Improvements in frames for the windows of motor and analogous vehicles
IPC: B60J10/04
Filed: 1932-07-28
Abstract: 404,380. Vehicle - window frames. GODIN, A. A., Aldine Place, Uxbridge Road, Shepherd's Bush, London. July 28, 1932, No. 21289. [Class 20 (iii).] A double channel guide for vehicle and like windows is formed by bending or otherwise forming adjacent channels 5, 7, in metal strip, or by securing a channel by spot welding to a flanged metal strip 1, as shown in Fig. 1. One or both channels may be lined with felt &c. The guide is secured to the vehicle by the flanges, which may be given any suitable shape for this purpose, as shown at 3, 8, Fig. 2.
Patent GB-154974-A (GB)
Title: Improvements in and relating to collapsible boats
IPC: B60F3/00
Filed: 1919-08-29
Abstract: 154,974. Ford, A. Delo-. Aug. 29, 1919. Collapsible vessels.-Collapsible boats of the kind described in Specification 118,128, are provided with stout bottom boards secured to the bottom transverse stretcher or the hull direct, and fitted on the exterior with twin keels to enable the boat to function as a motor-cycle side-car. The boat may be adapted for the reception of the motor-cycle and side-car chassis when it is desired to travel on water, the chassis being of the foldable variety, and may be fitted with propulsion means adapted to be driven from the engine of the cycle. Outrigged floats may be attached to the gunwales for increasing the stability on water. The boat a is fitted with folding stretchers and struts of the kind described in Specification 121,353, and inflatable chambers h as described in Specification 132,582. A stout bottom board, which may be in one piece, or in several pieces fitted with connecting and securing fittings, is secured to the hull, and the transverse stretchers c between the bottom stringers d, lie across its upper surface. The correct distance between the gunwale stiffeners is maintained by cross stretchers g, and between the former and the bottom stringers by upright struts. Twin keels j are secured to the bottom boards, and these keels permit the boat to be mounted in suitable clips m carried by a foldable side-car chassis k. For propelling the boat on water the cycle is carried inboard on the chock o and the usual stand p, the engine being geared, as shown. to drive a propeller r fitted to a shaft carried by a stern tube s secured by a flange t to a board u stayed by stretchers r and an angle bracket w. A seat may be slung from the gunwales to accommodate the passenger, and torpedo-shaped floats may be disconnectibly attached to the gunwales to increase the stability.
Patent GB-210472-A (GB)
Title: One-picture stereoscope
IPC: G02B27/22
Filed: 1922-08-05
Abstract: 210,472. Stanley, A. E. Aug. 5, 1922. Viewing - apparatus for single pictures, whereby a relief effect is secured, consists of a frame A carrying the picture, and two sets of reflectors B, C whereby the picture may be viewed through eyepieces D. The mirror C is divided as shown, and is adjustable so that an image of the picture is presented to each eye of an observer. Alternatively, either of the mirrors may be concave and adjustable for the same purpose. Focusing is effected by rack and pinion F by which the frame A and the reflector B is moved together. The apparatus may be arranged to fold.
Patent GB-433402-A (GB)
Title: Improvements in protective circuits for gas or vapour filled electric discharge vessels provided with a plurality of discharge gaps
IPC: H02H7/127
Filed: 1934-07-23
Abstract: 433,402. Converting. SIEMENSSCHUCKERTWERKE AKT.-GES., Siemensstadt, Berlin. July 23, 1934, No. 21517. Convention date, Oct. 20, 1933. [Class 38 (ii)] In an arrangement comprising a vapour discharge device having grids supplied from a distributer 6 which periodically raises the grid potential from a negative value momentarily to a positive value to effect ignition, an overriding negative bias is applied in the event of fault by the resistances 11 being short circuited. These are bridged by a multi-anode valve 12 in series with a relay 17 which operates in response to fault conditions to complete the short circuit across the resistances through the valve 12. The valve 12 may be of the high vacuum, gas or vapour filled types or may be formed by static contact rectifiers. The winding of the relay 17 may be energized from a current transformer. In a modification the valve 12 is grid controlled, the relay 17 being in the grid circuit and operating in the event of fault to remove a negative bias so that the valve becomes conductive to short circuit the resistances. In this modification the relay 17 may be replaced by an auxiliary valve, normally conducting but which becomes nonconducting on the occurrence of a fault.
Patent GB-688497-A (GB)
Title: Method and apparatus for working clay
IPC: B28C1/22
Filed: 1950-08-31
Abstract: 688.497. Pug-mills. INTERNATIONAL CLAY MACHINERY CO. Aug. 31, 1950 [Sept. 9, 1949], No. 21555/50. Class 86 [Also in Group V] In a clay working machine wherein a de-airing chamber under vacuum communicates with an extrusion press having a rotatable extrusion auger, a shaft extends through the de-airing chamber and is provided with means adapted to comminute clay and to advance it into the extrusion press, and a rotary feed member is provided to force clay from the de-airing chamber against the descending side of the extrusion auger. As shown in Fig. 3, a pug mill which comprises blades 20 upon a shaft 18 within an open trough 16 feeds the clay into a seal press formed by an auger 24 on the shaft 18 within a chamber 22, the seal press in turn discharging into an evacuated de-airing chamber 28 wherein the shaft 18 carries comminuting or pugging knives 52. At its discharge end the de-airing chamber 28 extends above the extrusion press 62 and communicates therewith through a tapering passage 66, Fig. 7, one wall of which is formed by a longitudinally ribbed rotary feed member 68 which forces the clay against the descending side of the rotary extrusion auger 64. A plurality of feeder knives 80 are mounted on the shaft 18 immediately over the passage 66. The auger 24 and chamber 22 of the seal press are built up of a number of readily demountable semi circular sections, and in the case of the auger, these may be assembled to provide augers of different length sand occupying different positions within the chamber 22 so that the operation of the seal press may be suited to the kind of clay being treated. The extrusion chamber 62 and auger 64 comprise a number of sections in the form of annular rings mountable or demountable endwise of the machine.
Patent GB-336303-A (GB)
Title: Improvements relating to electrical altitude indicating systems for aircraft
IPC: G01S13/34
Filed: 1929-07-13
Abstract: 336,303. British Thomson-Houston Co., Ltd., and Kinman, T. H. July 13, 1929. Addition to 317,068. Indicating proximity of earth.-The altitude indicating system for aircraft claimed in the parent Specification is modified by using a single circuit both as a transmitting circuit in which the oscillations of cyclically varying frequency are produced and as a receiving circuit for oscillations reflected from the earth. As shown in Fig. 1, a self.oscillating detector valve V<1> has in its grid circuit an oscillatory circuit consisting of an inductance L and a condenser C, and in its anode circuit an inductance L<1> coupled to the inductance L in the grid circuit. The aerial circuit A contains a loading inductance L<2> coupled to the inductance L. In parallel with the condenser C is a variable condenser C', the movable plates of which are rotated by means of a constant-speed motor M, a commutator K interrupting the circuit of the condenser C<1> while the plates are moving from the position of maximum to that of minimum capacity. Oscillations of cyclically varying frequency are thus generated and are reflected from the surface of the earth, the reflected waves being received on the aerial A and combined with the oscillations already existing therein. The oscillations of beat frequency thus produced are applied to the grid circuit of the valve V<1> and are detected in the usual manner. The anode circuit of the valve V<1> includes the primary winding of a transformer T, the secondary winding of which is connected to an aural or visual indicator. One or more stages of amplification may be provided following the valve V<1>. In a modification, separate valves are employed for generating the oscillations of cyclically varying frequency and for detecting the resulting beat-frequency oscillations. Specification 302,603 is referred to.