baber/WOPTO huggingface dataset:
Patent GB-869045-A (GB)
Title: Improvements in or relating to the control of blast-furnace stove-valves
IPC: C21B9/12
Filed: 1959-05-19
Abstract: 869,045. Valves. KOPPERS CO. Inc. May 19, 1959 [June 27, 1958], No. 16953/59. Class 135. [Also in Group XXXVIII The stove main of a blast furnace includes a fluid control valve 13, Fig. 1, which may be counterbalanced, actuated by an electric motor 17 through an hydraulicturbo coupling 20, a speed-reduction unit 22 and a mechanical linkage 24, e.g. crank, gear and pinion, or a pulley; the mechanical linkage may be dispensed with. The unit 22 drives a limit switch 154 used in a control system 10. The coupling 20 has a torque output less than the stalling torque of of the motor 17 at speeds equal to and less than the speed at which the motor stalling torque occurs. When the motor is of the single-speed induction-type its windings are connected by leads 104, 105, 106, Fig. 2, to a three-phase supply via contactors RO and RC controlling the clockwise and counterclockwise operation, respectively, of the motor 17. The solenoid 112 of contactor RO is in a control circuit VO governed by a master control system, not shown, through a contact 141 which, when engaging a contact 142, completes a circuit to cause energization of solenoid 112; when the valve 13, Fig. 1, is fully open the limit switch 154 is operated whereby contacts 156, 157, Fig. 2, are made resulting in energization of a solenoid 161 which opens a contact 139 and de-energizes solenoid 112, thus stopping the motor. Solenoid 112 may be manually-operated by moving a switch 140 on to a terminal 145 and depressing a push-button 146a. The solenoid 120 of contactor RC is in a similar control circuit VC. Interlocking means, not shown, in the master control system prevents simultaneous actuation of the contactors RO, RC. In a modification, the electric motor may be of any two-speed type, e.g. squirrel cage with field taps, but as shown, comprises a type wherein the three phases may be connected in star for fast operation and delta for slower operation by a contactor, one for each direction of rotation; an electrically-energized pneumatic time-delay mechanism is associated with each of the latter. When opening the valve the motor is rotated in a clockwise direction at a fast speed until near the end of the valveopening movement a cam switch causes the motor connections to be set for slower speed; immediately prior to reaching the fully-open position another cam switch de-energizes the associated delay mechanism so that the motor is disconnected from the power supply after a given time but during the delay period the valve reaches the fully-open position and abuts a mechanical stop whereby the fluid coupling is overloaded and stops, leaving the output coupling part at a standstill. A similar cycle of events occurs when the valve is to be closed.
Patent GB-856037-A (GB)
Title: Improvements in or relating to web-roll supporting and changing apparatus for continuous feeding of webs to machines or processing plant
Inventor: ARMELIN EDOUARD ROGER
IPC: B65H19/18
Filed: 1958-05-28
Abstract: 856,037. Feeding webs. CHAMBON Ltd. May 26, 1959 [May 28, 1958], No. 17006/58. Class 100 (1) A web-roll supporting and changing apparatus comprises a stationary frame, a carrier mounted for rotation relatively to the stationary frame, a plurality of arms or pairs of arms mounted on the carrier for angular movement about axes spaced from one another and parallel with and radially spaced from-the axis of rotation of the carrier, means for mounting a web roll on each arm or pair of arms so as to rotate about an axis parallel with but remote from the pivotal axis of that arm, and pressure-resisting means disposed parallel with the axis of rotation of the carrier so that the web is pressed against the pressure resisting means by a full web-roll at least when the carrier is rotated. As shown, the carrier comprises end member 1 having radial limbs 2 projecting from hubs 3 spaced apart axially on a shaft 4 rotatable by a worm 8 and worm wheel 7. Two pairs of bellcrank levers 23 journalled on shafts 11 fixed to the limbs 2 support web rolls in bearings 12 provided with hinged caps 13 and carry rollers 16 co-operating with a cam 17 at their opposite ends. The cam 17 limits the angular rotation of the bell-crank levers 23. A web guiding roller 22 is mounted on a shaft 21 between the ends of each pair of limbs 2. In operation, web withdrawn from the roll in the upper position passes around the roller 22 and around a pressure resisting splicing roller 24. The replacement roll mounted on the lower bellcrank levers 23 is prepared for splicing by the application of an adhesive patch. When the splice of the replacement web to the expiring web is to be effected the carrier 1 is rotated clockwise, such that the replacement roll contacts the running web 30, thereby accelerating the replacement roll and bringing the adhesive patch thereon into contact with the web 30. A knife 29 is then actuated electromagnetically, pneumatically, or hydrauiically to cut the trailing end of the web 30. The carrier is then further rotated clockwise to raise the running roll into the upper position and a replacement roll is loaded in to the bearings 12 carrying the exhausted roll. In a modification, Figs. 3 and 4 (not shown) a carrier 36 has radial arms 37, 38, 39, 40, the arms 37, 38 carrying web rolls, supporting levers 41, 42. A pressure resisting splicing roll 50 is mounted adjacent a knife 51 actuated by an electromagnet 54. The web 49 is spliced to the web of a replacement roll upon counter clockwise rotation of the carrier 36. A roller 44 on each of the arms 41, 42 co-operates with the inner periphery of an interrupted annular ring 46 to prevent these levers springing during their upward movement from the lower position to their upper position 14, the movement of lever 42 from the Fig. 3 to Fig. 4 position.
Patent GB-822093-A (GB)
Title: Tube flaring tool
IPC: B21D41/02
Filed: 1957-05-29
Abstract: 822,093. Tube expanders and flangers; spinning. IMPERIAL BRASS MANUFACTURING CO. May 29, 1957 [Aug. 10, 1956], No. 17027/57. Class 83 (4). A tube end is flared and burnished by means which may rotate and at the same time move axially of the tube to effect the flaring and may then rotate without moving axially to effect the burnishing. A chromium-plated faceted flaring and burnishing cone 15, secured at one end of a rod 14 rotatable in a sleeve 13 threaded in a frame 11, is rotated and moved towards and into a tube end 20 held in a clamp 12 of the frame 11 to flare the tube end. This is effected by rotation of a handle 16 axially, but non- rotatably, mounted on the rod 14 and having a pin 17 thereon engaging a recess 13b in an end 13a of the threaded sleeve 13. The sleeve 13 abuts, at 13d, the cone 15 which is given the consequent axial movement imparted to the sleeve. After flaring, the handle 16 is lifted, against the action of a spring 18 bearing against a stud head 19a on the rod 14, to withdraw the pin 17 from the recess 13b in the sleeve end 13a. The handle 16 is then rotated approximately one revolution, the pin 17 sliding on the sleeve end 13a until it springs back into the recess 13b, so that without axial movement, the cone 15 rotates in contact with the flared tube end to burnish it. Further burnishing revolutions may be given to the cone 15. In a modification, Fig. 6, an end surface 113a of the sleeve 13 is generally helical so that one edge 113e of a recess 113b to accommodate a pin 117 is higher than the other edge 113f.
Patent GB-171090-A (GB)
Abstract: 171,090. Entz, J. B. Nov. 5, 1920, [Convention date]. Electromechanical power transmission systems. -The system comprises a dynamo-electric machine one element of which is connected to the driving shaft and the other element to the driven shaft, a second dynamo-electric machine having a fixed field and its armature connected to the driven shaft, and a battery, is provided with a controller for varying the circuits of the machines for speed control, braking and starting. The second dynamo-electric machine is provided with two field windings adapted to act in conjunction or in opposition, and a separate switch, provided with a lock, may be placed in the starting circuit. In the first speed portion of the controller, the development of which is shown in Fig. 1, the armature 1 of the first machine, connected to the driven shaft, the field winding 2 of this machine, connected to the driving shaft, the fixed field winding 7 of the second machine and the armature 8 of this machine, connected to the driven shaft, are connected in series, the field-winding 2 being shunted by a resistance 10 and the excitation current being supplied by a battery 6 through resistances 4 and 5. In the second position of the controller a resistance 9 is connected in series with resistance 10, and in the third position the resistances 9 and 10 are cut out. In the fourth position a second field winding 3 on the second machine is connected across the armature 8 and arranged to oppose the field winding 7 which is shunted by the resistances 9 and 10. In the fifth position the resistance 9 is cut out, and in the final position the armature 1 and field winding 2 of the first machine are short-circuited and the second machine operates as a generator to charge the battery 6, the field windings 3 and 7 assisting each other. When the vehicle is descending a long hill and the engine is stopped, the controller is moved to a sprag and re-starting position in which the first machine is included in a circuit containing a resistance and operates as a clutch. In this position also the second machine is short-circuited to act as a brake during the backward movement of the vehicle. In the first braking and re-starting position the second machine is connected in a circuit containing resistances 4 and 5, and the field winding 7 of the second machine is short-circuited when the controller is moved from the first braking position to the sprag and re-starting position in order to prevent arcing. In the second braking position the resistance 5 is short-circuited. In the crank and brake position the resistances 4 and 5 are connected in parallel, and an additional position is provided in which the first machine is connected with the battery to operate as a motor to start the engine. Further braking, cranking, and battery charging and braking positions are provided. A separate switch 15 may be included in the circuit of the first machine to cut out the restarting connections, and this switch may be provided with a lock and key. Specification 18138/15 is referred to.
Patent GB-828310-A (GB)
Title: Sliding clasp fastener
IPC: A44B19/12
Filed: 1956-06-04
Abstract: 828,310. Sliding clasp fasteners. HANSEN, H. June 4, 1956 [Jan. 16, 1956], No. 17203/56. Class 44 In a sliding clasp fastener of the type in which each row of engaging elements is made in one piece from a continuous ribbon or thread running from end to end of the fastener, one row is in the form of a coil 1, Fig. 1, while the other row is in the form of a non-coiled serpentine-like structure 2 having bends or loops 3 for engagement between the convolutions 6 of the coil 1. As shown in Fig. 2, the coil 1 is formed from a thread of circular crosssection whilst the structure 2 is formed from a ribbon of rectangular cross-section the width of which may be slightly less or greater than the inner diameter of the coil 1. The loops 3 are formed on the ends of flat portions 5 and the structure thus is provided with undercut projections to engage in the coil. The cross-section of the coil may be non-circular, e.g. oblong with rounded ends and composed of two or more intertwined ribbons or threads. Similarly the cross-section of the structure 2 may be circular or oblong with rounded ends. The longer dimension of the cross-section of the structure 2, Fig. 2, may be inclined to medium plane through the stringer tapes 7 and the longitudinal axis of the closed fastener.
Patent GB-693334-A (GB)
Title: Improvements in or relating to an apparatus for telemetering signals
IPC: G01F1/37
Filed: 1951-07-20
Abstract: 693,334. Electric control system. INFILCO, Inc. July 20, 1951 [Nov. 20, 1950], No. 17248/51. Class 40 (i). Apparatus for indicating the magnitude of a physical variable, e.g. the height of a mercury column in one leg of a manometer, comprises the coils of a valve oscillator which are made to move cyclically up and down the leg of the manometer, thereby sensing the height of the mercury by starting and stopping the oscillations in the valve circuit, said oscillations affecting relay circuits whereby a signal pulse is transmitted whose duration is indicative of the height of the mercury column. In an embodiment for measuring fluid flow .in a conduit, a lever 20 (Fig. 1) oscillating about a fixed pin 22 by a roller 26 riding on a cam 32 driven by a sychronous motor 30 has at one end a counter weight 23, and at the other end two coils 24 straddling the plastic or glass low pressure leg 14 (Fig. 3) of a manometer 15 containing a metallic liquid M. e.g. mercury. The shape of the cam 32 is such that the time taken for the coils 24 to travel from the zero level Z to any other level M, is proportional to the square of this distance, and therefore proportional to the fluid flow through the conduit 11. An arm 33 -is attached to the cam 32 and adjusted to operate a switch 36 corresponding to zero level Z, thereby, initiating a signal which stops when .the mutual inductance of coils 24 is reduced by the mercury at level M<SP>1</SP>. At the lowest part of the travel a roller 41 on the cam 33 butts against an extension 42 attached to the arm 20, whereupon the arm is lifted from the cam 32, and replaced at the top of the cam to start a new cycle. A further arm; 43 attached to the cam 32 co-operates with a switch 46 to stop the motor 30 if the electronic circuit is faulty. The electronic circuit comprises an oscillator valve 51 (Fig. 5) containing the coils 24 in its tank circuit. At the start of the cycle the coils are not affected by the mercury column M when the switch 36 is actuated by arm 33 to close an energizing circuit of winding 38 of relay 39, thereby making its own holding circuit, and causing a current to flow through the load 85 via switch 46, which also controls motor 30. When the mercury column reduces the mutual inductance of coils 24 the oscillations cease, the anode current of valve 51 increases to energize winding 58 of relay 57, whereby winding 38 is short-circuited and the current through 85 is stopped. If however the anode current of valve 51 is too low to energize relay 57, the subsequent operation of switch 46 b.y.the arm 43 causes the motor 30 to stop, and a visual indication of the fault is given at 95. In another embodiment Fig. 6 (not shown) the valve 51 is duplicated so that when one valve fails the other valve is automatically introduced into the circuit, and a warning lamp indicates the presence of a faulty valve.
Patent GB-390362-A (GB)
Title: Improvements in or relating to electric water heaters
IPC: F24D17/00
Filed: 1931-12-21
Abstract: 390,362. Heating water by electricity. PETRIE, D. G., 40, Guessens Court, Welwyn Garden City, Hertfordshire. Dec. 21, 1931, No. 17308/32. Divided on 375,800. [Class 39 (iii).] In a series arrangement of tanks one or more of which are provided with heating elements, at least one tank 1 encloses another 2 without the intervention of heat insulation and the water leaves each tank from the top and enters each tank at the bottom. Three tanks may be arranged concentrically or two arranged side by side may be enclosed by a third. Where elements are fitted to more than one tank they may be of different capacity. The same general details may be employed as are described in Specification 375,800.
Patent GB-110824-A (GB)
Title: Improvements in Artificial Teeth.
Inventor: NOVE ARNOLD AVADIE
IPC: A61C13/093
Filed: 1916-12-04
Abstract: 110,824. Nove, A. A. Dec. 4, 1916 Teeth, artificial.-The tooth comprises a hollow porcelain shell A of approximately uniform thickness, the hollow interior corresponding to the external contour, and a thin hollow metal matrix P cemented to the porcelain and anchored to the denture by vulcanization or soldering, or attached by soldering or otherwise to a post fitted to the root of a natural tooth. A layer of soft rubber D, Fig. 7, may be placed between the porcelain A and the metal matrix B or between the latter and the vulcanite of the denture. The hollow matrix may be stamped or drawn to shape, or may be electrically deposited upon a mould or former, or may be made of two parts soldered or brazed together. In modifications, co-acting grooves and projections may be formed on the inner wall of the porcelain and on the metal matrix. Figs. 8, 11, 14, and 21 show examples of such constructions.
Patent GB-524009-A (GB)
Title: Improvements in or relating to pipe joints
IPC: F16L13/16
Filed: 1939-07-13
Abstract: 524,009. Pipe joints. WATT, W., and JACKSON, J. July 13, 1939, No. 17444/38. [Class 99 (i)] Copper pipes are joined to withstand the normal mains water pressure by forming on the pipes flanges 6, 8a of different lengths and then turning over the longer flange so that it embraces the shorter flange. In a modified form of joint the two flanges are of the same size and the joint is made by a ring which is turned over and squeezed into contact with the flanges. If preferred, the ring may be passed over the pipe, the free end being turned over to hold the flanges in contact. Packing may be inserted in the joint and pipes of different sizes may be joined. The joint may be made on the formers 1, 3, 4, shown in Fig. 1. The flanges 6, 8a are formed by forcing pipe ends which are held in the formers 3, 4 on to the central former 1. The former 1 is then withdrawn and the flange 6 inserted in the cup-shape flange 8a after which the edge of the flange 8a is turned over by its engagement with the face 10 of the former 3.
Patent GB-174687-A (GB)
IPC: D01G15/02
Abstract: 174,687. Walsh, D. Oct. 20, 1920. Protectors. - In order to prevent damage. by dust and leaky fire-sprinklers to the fibrous material passing over carding-engines, drawing, roving, intermediate, and slubbing frames, &c., sheets of waterproof fabric, such as American leather, are adapted to be drawn over the machine. As applied to a carding-engine, a cylindrical casing c, Figs. 1 and 5, containing one or more, e.g., two, spring rollers f, g is carried on uprights b from the flat-stripping bracket a and is provided with slots d, e, through which a long cover h and short cover i pass. The ends of the cross-rod k of the cover h are secured to telescopic rods l, m, which are pivoted to brackets n, rest in crutches p on the flat-grinding bracket q, and are held extended by wing-screws r. The cross-rod s of the cover i rests in two clips t, respectively on a long arm u pivoted to the machine frame w and on a short arm v, Fig. 7, pivoted to the coiler top x. The covers may be supported at intermediate points on rods or rollers y, z. When out of use, the covers roll up automatically, the rods l, m are telescoped and turn to lie against the casing c, the arm u lies horizontally, and the arm v hangs downwards, spring-pressed balls 5, Fig. 7, engaging recesses 6 to lock the arms in the required posittons. A plurality of casings may be provided for each machine.
Patent GB-993360-A (GB)
Title: Improvements in or relating to symmetrical photographic and reproduction lenses, corrected spherically, astigmatically and chromatically
Inventor: ZOLLNER HARRY
IPC: G02B13/24
Filed: 1962-05-07
Abstract: 993,360. Optical lens Systems. CARL ZEISS JENA VEB. May 7, 1962, No.17493/62. Heading G2J. In a symmetrical photographic and reproduction lens corrected spherically, astigmatically, chromatically and for coma the lens halves on each side of the plane of symmetry each comprise a single inner element and a cemented outer component or a single inner element and an outer component made up of two closely spaced elements, the inner elements and the outer components all being convergent, the focal length of each of the two inner elements being between 1.75 and 3 times the focal length of the entire lens and the focal length of each of the two outer components being between 4 and 25 times the focal length of the entire lens. Optical data are given for an example of each of the two alternatives.
Patent GB-1176611-A (GB)
Title: Temperature-Compensated Oscillator
Inventor: PAGE ALLEN JOHN
IPC: H03C3/22
Filed: 1968-04-11
Abstract: 1,176,611. Oscillator temperature compensation. MULLARD Ltd. 11 April, 1968, No. 17583/68. Heading H3T. In an oscillator having a resonant cavity 1 means 12 is provided for sensing a temperature associated with the cavity to obtain a control quantity dependent on temperature and means, e.g. a choke 10A allows the control quantity to pass to a varactor 8 while impeding unwanted transmission of the oscillations so that the varactor 8 modifies the reactance of the cavity and its resonant frequency to reduce the temperature sensitivity. The oscillator may include a Gunn effect device 4, the output of which is obtained from an adjustable coupling 6, such as a rotatable loop. The temperature dependent voltage obtained from the senser 12 which may be in thermal contact with the cavity, is fed to control varactor diode 8. The senser 12 may be a transistor clamped to the outside wall of the cavity or in thermal contact with the Gunn effect device 4. Alternatively, the senser 12 may be a thermistor. The required temperature compensation may be set by adjuster 14. The oscillator may be used in receiving echo pulses from nearby magnetron transmitter in radar equipment and the oscillator may be arranged to have the same degree of temperature compensation as that of the magnetron. A non- linear adjuster 15 compensates for the non- linear characteristic of the varactor diode 8. The frequency may be manually adjusted by a frequency setting arrangement 16 and by a coarse mechanical adjustment on the cavity 1. The circuits 14 and 16 may include variable resistances. Varactor diode 8 is supplied with D.C. via an input terminal 9 insulatedly attached to a manually rotatable termination 10. The attachment of the termination 10 to the cavity includes a quarterwave choke rotable joint for preventing passage of the microwave energy. Line conductor 2 is insulatedly attached to the cavity 1 by some means which suppress higher harmonics.
Patent GB-326421-A (GB)
Title: Improvements in or relating to vacuum sweeping machines
IPC: A47L5/06
Filed: 1929-06-07
Abstract: 326,421. Burrage, A. E., and Vacdus Engineering Co., Ltd. June 7, 1929. Vacuum cleaners. - The brush S of a manually actuated vacuum cleaner is driven by an endless belt w<1> passing over pulleys s<1> on the brush and W on an extension of the axle of the floor wheels G. The fan is contained in a casing A, and is driven by gearing within a box J from the wheels. The propelling handle is supported from side brackets by a pivoted yoke H carrying a socket h<1> and held in position by a releasable spring h<3>, A pivoted stand M enables the machine to be supported in a stationary position, the fan being then driven by a pedal N through a flexible connection with the gear, as described in Specification 270,083. The nozzle is fitted with a slide-controlled connection enabling a flexible suction pipe to be fitted. A third wheel R adjustable by a handle P<1> completes the support of the machine. The brush-bearing blocks s<2> are releasably secured in the nozzle B by spring clips. The brush stock may be of wire, or it may be constituted by a metal tube s<4>, Fig. 3, with helically arranged perforations, into which tube a wooden rod is pressed; corresponding holes of smaller size are formed in the wood, and the bristle tufts are forced into them by a tool Z.