US490013A - Electric telemeter-transmitter - Google Patents

Description

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F.`J. DIBBLE.. ELECTRIC TBLEMETER TRANSMITTER.

No. 490,013. Y Patented Jan. 17,' 1893.

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F.. J. DIBBLE.

l ELECTRIC TELEMETER TRANSMITTER. No. 490,013. meine@ Jan. 17, 189s.

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i ELECTRIC TBLBMBTBR TRANSMITTER. No. 490,013. Patented Jan. 17, 1893.

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v UNITED STATES PATENT Erica.,

FERNANDO J. DIBBLE, OF PEABODY, MASSACHUSETTS.

ELECTRIC TELEMETER-TRANSNIITTER.

SPECIFICATION forming part of Letters Patent No. 490,013, dated January 17, 1893.

Application tiled November 21, 1891. Serial No. 412,671. (No model.)

To all whom, it may con/cern,.-

Be it known that I, FERNANDO J DIBBLE, of Peabody, county of Essex, State of Massachusetts, have invented an Improvement in Telemeter Systems, of which the following description, in connection with the accompanying drawings, is a specitication, like letters and iigures on the drawings representing like parts.

This invention relates to telemeter systems, and has for its prime object the production of a system which may be operated over a single-line circuit employing a single-line battery or generator.

Other features of this invention will be hereinafter described and pointedont in the claims.

Figure l is a face view of a transmitting device to be used in connection With my improved telemeter system; Fig. 2 a perspective detail showing the contact arm and co-operating movable contacts; Fig. 3, a section of Fig. l on dotted lines the plate D and parts carried thereby being removed; Fig. 4, a diagram View, showing the arrangement of circuits to be described; and Fig. 5, a detail to be referred to.

The invention is herein represented as embodied in a device particularly adapted for use in indicating and recording the variations in the level of water contained in areservoir, stand-pipe, 85e., said device consisting of a suitable frame or easing A, having bearings for the shaft a, fast upon which at one end is a pulley a', which may be belted or connected to any usual float in the water contained in the reservoir or stand-pipe, and which it is unnecessary to describe in detail, rise and fall of the ioat rotating the pulley a and shaft a in one or the other direction. The shaft a, at its end opposite the pulley a', has a series of teeth a? cutin its periphery, which teeth mesh with the teeth of a pinion as on an arbor a, journaled in the backeplate A", said arbor at the opposite side of said plate having fast upon it a pinion ai', in mesh with a toothed Wheel as, fast on a shaft c7, journaled in the said back-plate and casing, see Fig. 3. The toothed wheel c which constitutes a rotatable actuator carries a laterallyextended pin t, which normally lies between the two pins b', h2 projecting radially from the peripheries of the disks or plates b3, b4, loose on the shaft. a7 and connected with each other by a coiled spring b5, see Fig. 5, one end of which is attached to the hub ot the disk b3, while the other end is attached to the periphery of the disk b4. A contact arm o, loosely journaled on the hub of the disk b3 aboutthe shaft a7, also has a projecting pin o', lying between the pins b', b2, see Fig. 3, the outer end of said contact arm lying between the contacts o?, o3 on the arms o4, o5, on the inner end ot' the staff d, journaled in the frame plates D, Fig. l the said contacts being connected respectively with the conducting disks orsurfaces 06, o7 on and insulated from the staff d and also insulated from each other, acontact spring o8 bearing upon the disk o6, and a contact spring o9 upon the disk o7, by which the said contacts, while movable, are placed in electrical connection with Wires leading from said spring contacts.

The staff d at its front end carries the toothed wheel d', Fig. l driven bythe pinion cl2 on the shaft d3, also carrying the toothed driving Wheel d4, the teeth of which are adapted to be engaged by one or the other of the ends 6, 7 of the pallet f4, pivoted at f 3, the said wheel d4 also being acted upon by a spring-controlled dog di, which assists in the proper rotation 0f the wheel and to retain the same in position.

The pallet f4 at its pivotal end has formed as a part of it the armature-carrier f2, to opposite ends of which are attached the arma-- tures f, f of the electro-magnets F, F, see Fig. l. The electro-magnets F, F are also provided with auxiliary armatures h, h', carried by the U-shaped carrier h2, pivoted at hsx, the arms 26, 27 of said carrier normally lying between and out of engagement with the fixed contacts ha, h4. The armature-carrier f2 carries at each end two contact springs e, e', e2, e3, insulated from each other, the springs e, e normally lying at opposite sides of a Xed contact e, While the springs e2, e3 normally lie at opposite sides of the fixed contact e5. The pallet f4 has two laterally-extended pins 15, 16,shown by dotted lines Fig` l which lie at opposite sides of the inclined faces 17, 18 of the bar p, pivoted at p', the outer end 19 of which lies directly beneath IOO the screw r on the pivoted circuit-breaking lever r, a contact r2 on the outer end of which normally rests upon a Contact spring r3, see Fig. l.

In Fig. 4, the movable contacts o4, o5 are shown as partially rotated into their lowerlnost position for the sake of clearness, the7 being in the positions which they will occupy when the circuit has been closed asuccession of times, and referring to said gure the fixed contacts e4, e5 are connected by wires 30, 31 with the opposite poles of the main line battery B. One pole of the local battery B is connected by the wires 3:2, 33 with the eiectro-magnets F, F', the latter being also connected by wires 34, 35 with the fixed contacts h3, h4, they in turn being connected by wires 36, 37 with the contacts 02, o3. The other pole of the local battery B is connected by .wire 38 with the fixed contact r3. One end of the line wire 40 is connected with the pivotal end of the circuitbreaking lever fr through the base of the instrument at the point/r a: Fig. 4, while the other end of the line is connected with the contact springs e, e3, which are insulated therefrom, the other springs e', e2 being connected in circuit with the base of the instrument through the armature carrier f2.

M, M represent polarized relays included in the main line 40, one of which is located at each receiving instrument, which may be placed at any desired point however distant from each other, being herein represented as substantially like those shown and described in my patent No. 474,771, dated May 14, 1892, to which reference may be made, a portion only of each instrument being herein shown for the sake of clearness, the armature fm of each of the said polarized relays being connected by wire 50, through a local battery 50X, with the receiving magnets c, c', said magnets being also connected by wires 51, 52 respectively with the contacts nl', m2 at opposite sides of the armature m.

The operation of the system is as follows,- Assuming the shaft dof the transmitting device to be rotated in the direction of arrow 100, Fig. 3, by a fall of water in the reservoir or stand-pipe with which it is connected,and rotated in the opposite direction by a rise of water in the said reservoir or stand-pipe, if the water falls the shaft will be rotated in the direction designated, and through the pinions a3, a5 willA rotate the wheel a6, causing its pin h to move the pin b2 to the right, Fig. 2, and the pin b', being connected therewith by the spring b5 will tend to follow the said pin b2, and will move the contact arm o before it, causing it to follow or move in unison with the pin h2, the outer end of the said contact arm engaging the contact o2, which, referring to Fig. 4, closes the circuit from the local battery B through the wire 32, magnet F, wire 34, contact h3, wire 36, contact 02, contact arm o, through the baseof the instrument to the circuit-breaking lever r, through the contact spring r3 and wire 38, back to the other pole of the battery, such closure energizing the magnet F and causing it to attract its auxiliary armature h to bring the end 26 of the carrier h2 into engagement with the fixed contact h3, to thereby shunt out the contact arm 0 and contact o2 and permit the current from the magnet F to pass through t-he wire 34, contact h3, and carrier h2, directly to the base of the instrument, and thence through the circuit-breaking lever r back to the battery, without passing through the contact arm and its contact. The passage of the current through the magnet F will cause it to attract its main armature f, and bring the spring e into engagement with the iiXed contact e4 and the spring e2 into engagement with the fixed contact e5, completing the circuit of the main line battery B the circuit being traced as follows,-from the main line battery B through the wire 30, fixed contact e4, spring e, out over the main line 40 through the magnets of the polarized relays M, M', dsc., at the various receiving stations, back through to the base of the instrument at the point rx, through the armature carrier f2 spring e2, fixed contact e5, wire 3l, to the other pole of the main line battery. A current of one polarity being thus sent over the main line 40, the several polarized relays M included in the circuit will be energized, causing their armatures to be moved in one direction, as for instance that indicated by the arrows, to close the circuit from the local battery 50 through the armature m, contact m', wire 51, receiving magnet c, through the base of the instrument and wire 50 to the other pole of the battery, energizing the said receiving magnet c, and operating through its armature in the manner described in the patent No. 474,771 previously referred to, to ndicate or record the change in movement of the shaft a of the transmitter to indicate that the water in the reservoir or stand-pipe is lower. As the magnet F of the transmitter attracts its armature f, the pallet f4 will act as described to rotatethe staff CZ of the transmitter to move the pointer P thereon to ndicate the lowering of the water, the rotation of the staff d moving the conducting disks or hubs 06, o7, and their contacts 02, o3 in the saine direction that the contact arm o has been moved, to thus move the contact o2 away from or out of engagement with said contact arms to break the circuit and permit the armatures and parts to resume their normal positions. But should the water in the reservoir continue to fall rapidly, and thus cause the contact arm 0 to follow the Contact 02 as the latter is moved away from it, the circuit will still be broken by the barp which, actuated by the vibratory movement of the pallet f4 acts upon and lifts the circuit-breaking le- Ver r, oft' from the contact spring r3; but if the contact arm follows and continues in engagement with the contact arm 02, the circuit will be again established as soon as broken IOO and the pointers and recording members of the transmitting and receiving devices will be moved forward another point to indicate a further lowering of the Water in the reservoir. This movement of the pointers is continued by successive closures and interruptions of the circuit, until the contact arm has reached the limit of its movement, indicating the lowest level of Water, when the next succeeding impulse will carry the contact o2 beyond it to break the circuit at that point. Should the water rise in the reservoir, the shaft a of the transmitter will be rotated in the direction opposite to that indicated by the arrowA 100, causing the pin b on the Wheel a to move in the opposite direction and strike against the ,pin b on the disk h3, moving the latter back or away from the pin o on the contact arm o, which it had followed, and permitting the coiled spring h5, acting through the other pin h2, to move the said contact arm back to cause the said arm to engage the contact o3 and close the circuit from the local battery B', through the wire 33, magnet F', wire 35, fixed Contact h4, wire 37, contact o3, contact arm o, through the base of the instrument to the circnit-breaking lever r, contact r3 and wire 38, to the other pole of the local battery, thus energizing the said magnet F slightly to attract its auxiliary armature 7a', and to bring the arm 27 ot the carrier h2 against the fixed contact 7a4 to thus shunt out the said contact arm o and contact 03, and permit the current to pass from the magnet F directly to the base of the instrument.

The shunting out of the contact arm o and contact o3, permits the magnet F to be fully energized to attractits main armature f', and to bring the spring e3 against the fixed contact e5 and the spring c against the xed contact e4, to thus establish a circuit from the battery l5 through the main line, which cir# cuit may be traced as follows-from the main line battery B, Wire 3l, contact e5, spring e3, line wire 40, through the various polarized relays placed in the line, back to the base ot' the transmittinginstrument at frx, thence through the armature carrier f2, spring e', ixed contact et, wire 30, to the other pole of the main line battery, thus passing a current over the main line in the opposite direction from that sent over the line by the energizing of the magnet F, and causing the armatures m of the polarized relays at the receivers to be moved-in the opposite direction, or opposite to that indicated by the arrows, to close the local circuit at each receiver from the battery, through the armature m, contact m2, wire 52, receiving magnet c to the base of the receiving instrument and wire 50, back to the local battery, causing the said receiving magnets to attract their armatures and, as fully set forth in the patent No. 474,771 previously referred to, to move their indicating pointers and recording arms in thc direction opposite to that in which they were moved by attrac tion of the armatures of the receiving magnets c, to thus indicate a rise in level of the Water in the reservoir. The circuit is, in this instance, broken at the transmitting instrument bythe circuit-breaking lever r, as described, after each impulse, the impulses being repeated as long as the contact arm o remains in engagement with the contact o3, the successive impulses causing the indicating pointers and recording arms to be moved back to indicate the rise in the level of the Water, until the latter has reached its highest level.

It will be seen from the foregoing that a single main line battery only, is necessary for the operation of the system, the usual local batteries being provided at the various stations.

The contact arm o is held in a central normal position by the pins b', b2 acting from op posite sides against the pin o', and as soon as either one of the pins b', b2 is moved to the left or the right bythe pin b on the Wheel a6, the coiled spring h5, acting through the other pin, will cause the said arm to immediately follow the movement of the pin thus moved.

Should the Water in the reservoir fall rapidly, and cause the shaft a and the wheel a6 to be rotated faster than the contact arm o by successive impulses is permitted to follow, the pin b2, which is moved away from the said contact arm by the faster rotation of the wheel a6, will simply act to tighten or wind the coiled spring h5, while the other pin, behind the contact arm and also acted upon by the coiled spring, pushes the contact arm o along after the pin b2 as fast as the successive electric impulses will permit it, until the said contact arm shall have caught up and shall have been stopped from further rotation by the pin which was moved away from it.

It, from any cause, the battery or any of the, electric circuits should fail, the shaft o, and the Wheel a6 may be moved by the rise or fall in level of the Wat-er Without danger of breaking or otherwise injuring the mechanism of the instruments; for, if the electricity fail to operate properly, the contact arm 0 cannot be moved forward, in which case the Wheel a will simply push one or the other of the pins h', h2 through a complete revolution without the contact arm following and without doing any damage. After the said pin has been moved one Whole or part of a revolution without the contact arm following, it the electricity be suddenly restored, the contact arm will immediat-ely, by the successive impulses sent over the line as described, click along after the said pin until it has caught up ICO IIO

IIS

that it will not be easily moved except bythe Wheel c.

The contacts e4, e5 the spring pins e, e', e2, e3, constitute a pole changer for the main line circuit body.

I claiml. In a telemeter system, a movable contact arm, two co-operatin g contacts between which said contact arm moves, two transmitting magnets arranged in local circuit respectively with said contacts, a battery for said local circuit, and armatures for said magnets, combined with a mainline circuit, a battery therefor, polarized relays therein, and receiving devices controlled thereby, and a circuitcloser and pole-changer also in said main line and operated by movement ot' the armatures of said transmitting magnets, substantially as described.

2. In a telemeter system, a movable contact arm, two co-operating movable contacts between which said contact arm moves, two transmitting magnets arranged in local circuit respectively with said contacts and having their armatures connected to move said contacts, combined with a pole-changer operated by said armatures, a main line circuit controlled thereby, polarized relays in said main line, and receiving devices controlled thereby, substantially as described.

3. In a telemeter system,a movable contact arm, two co-operating contacts between which said contact arm moves, two transmitting magnets arranged in circuit respectively with said contacts, abattery for said circuit, armatures for said magnets, two pairs of contact springs moved by said armatures, one pair being connected with one end of the main line circuit and the other pair being connected with the other end of the said circuit, and cooperating contacts for said two pairs ot' 2ontact springs connected respectively with the opposite poles of a main line battery, to operate substantially as described.

4c.. A rotatable actuator, an actuating mechanism therefor, combined with a contact arm pivoted to rotate about the axis of said actuator, and a spring connected with said actuator and acting against said contact arm at each side, substantially as described.

5. A rotatable actuator and actuating mechanism therefor, combined with a contact arm pivoted to rotate about the axis of the said actuator, a spring connected with said actuator and acting against said contact arm at each side, and a device actuated by said shaft to relieve the said contact arm from the action of the spring at either side to permit ihe spring at the opposite side to move the arm, substantially as described.

6. A rotatable shaft, an actuator, and a Wheel on said shaft carrying a laterally-extended pin, combined with two disks loosely journaled on said shaft and connected by a spring, two pins on the peripheries of said disks arranged respectively upon opposite sides of said laterally-extended pin, and a pivoted contact arm also provided with a pin extended between the pins on the peripheries of said disks, substantially as described.

In testimony whereof I have signed my name to this specification in the presence ot two subscribing witnesses. l l

FERNANDO J. DIBBLE.

Witnesses:

FREDERicK L. EMERY, GEORGE F. RANDLETT.

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