US1345060A - Telemotor - Google Patents

Description

M. B. vBENSONl TELEMOTOR. APPLICATION FILED DEC-3,19l8` 1,345,069. Patented June 29, 1920.

2 SHEETS-SHEET l.

INVENTOR.

ML B. BENSON.

TELEMQTOR. APPLICATION H LED DEC.3, 191s.

im .y

A TTORNEYS.

UNITED sTATEs` PATENT oT-F-ICE.

MELVIN B. BENSON, 0F SUPERIOR, WISCONSIN.

' TELEMOTOR Specification of IietterslatentA Patented June 29, 1920.

Application mea December s, 1era. serial No. '265,162.

To allfwhom t may concern:

, Be it known that I, lMELVIN B. BnNsN, a citizen )of the United States,` residing at Superior", in the county of Douglas` andl State of Wisconsin, have invented certain new and usefil Improvements in Telemotors, of`

which I do hereby declare the following to bea specification. Y

My invention relates to telemotors and has for one of its objects the provision Vof improve'ments in steering gear for vessels. It

as for a further obj ect the provision of improved means for operating the valve of an engine distant from the station of the operator. Heretofore-the operative action of devices of this type has tended to continue,4

by reason of momentum, longer than desired7 and to carry certain transitory or. reciprocable parts `of the device/past the stations at which they were intended tostop. One feature of my invention is the provision of a simple and efficient' automatic brake t0 compensate such tendency. With these and other objects in view, it consists of the constructions, combinations and arrangements of parts hereinafter described and claimed.

In the drawings, Figure 1lis a diagrammatic plan view of one. form of structure embodying my said invention. Fig. 2 is a central vertical section, partly in side ele-` vation, of a hereinafter described controller case and contents, forming part of my said invention. Fig. 3 is a fragmentary top plan view, partly in central horizontal sectionand partly broken away, of a hereinafter described reciprocable collector bar Contact and series of opposed stationary contacts.

In the drawings; 1 is a source of electricity as a generator ofany suitable type, one of the ples, as the plus p ole, of which generator iselectrically connected in any'suit yable manner, las by a wire l, post 1b, rail 1,

Contact point 1d, and wire 1?. with a contact point 1f, which latter point is adapted to be moved by any suitable means as by a lever 2, spindle 2, and contact supporting arm 2b, into acontact with one or another of a plurality of stationary 'contact points 3, 4:, 5. Said pole of said generator is also connected in any suitable manner as by a wire 1g with one' pole of the shunt field 6 of a motor 7 of any suitable type, and is also connectedl through a normally open contact l8, and wire 9 with one of the armature Apoles as 7 of said motor, and throughsaid armature and wire 11 and a normally open contact 15 and wire 13 with one of thepoles of-a series field 14 for said'motor. Sald pluspole is also connectedI through said wire 1g, a normally open con` .tact 10and wire 11 with the opposite. polev 7 b of sald armature, and through said armature and wire and a normally open contact 12 and said-wire 13, with said pole ofsaid series field. The opposite` pole of said series field is connected through wires 16 and 17 with the opposlte or minus pole, of said generator, and the opposite pole of said shunt field is'connected through'wires 18 and. 17 w1th said opposite or minus pole of said generator.

Said plus pole of said generator is also .connected through normally closed contacts 19 and 2O with one pole of an electromagnet 21, the opposite pole o fwhich magnet is connected to said minus polel ofy said generator. Said poles 7"L and 7" of said motor are electrically connected to each other through a resistance 22 and a normally closed contact .23, which contact 23 is'adapted to be closed by the operation of said ma et 21 upon an armature 21a of any suitab e structure, Ab'y which one of the points of said contact 23 is carried or moved. Said contact points 3,

4 and .5 (it being understood that there may y be any greater number of them, and an equal' number of lthe hereinafter described correspending normally closed contact points) are connected by wires, as, respectively, 3,

4a and 5a with corresponding stationary contact points 3b, 4J and 5b mounted in a support 24 of any suitable material or structure, as in a stationary block 24 ofl insulating material by which the are directly insulated from each other.

times with anyone or another ofusaid condapted to contact at various tacts 3b, 4b and 5b, and at all times with all any one or another of said contacts 3b, 4i and 1j 5* at various 'times from either of said sections 25 and 25a. Said section 25 is electr?. cally connected in any suitable manner, as by a' stationary contact 28 adapted to bear thereon at all times, and by a wire 29, with l one pole of amagnet 30 the opposite pole of which is connected to the mmus pole of:

. said motor.

said generator. Said magnet 30 is adapted t0 simultaneously close the normally openand at the same time said magnet is adapted to open the normally closed contact 19 by the operation ofan armature by which one of the points of the latter contact is carried.`

Said contact 25a is'connected inany suitable manner, as by a stationary contact 31, adapted to bear thereon at all times, and a Wire 31n with one pole of a magnet 32, the opposite pole of Which is connected to the minus pole of said generator. Said magnet 32 is adapted to simultaneously close the normally open contacts 10 and 12 by the operation-of an armature 321 of any suitable structure by Which one of the' points of each of said contacts is carried or moved; and at the same time said magnet 32 is Aadapted to open the contact 20 by the operation of an armature by Which one of the points of the latter contact is carried or moved.

Said carriage 26 is adapted to be operated by said motor through any suitable transmission mechanism, preferably comprising a slidable block 33 adapted to be -moved along guides, 34, 35 by a Worm 36 j ournaled in stationary bearings of any suitable construction as37, 38; said Worm engaging said y block intermediate of' its ends. Mounted on the shaft of said AWorm at one end is a gear 39 adapted to engage one of a'train of gears as 40, 41, the other of which train is adapted to be driven b a pinion 42 on the shaft oi' lXivotally secured at one end to said block is a link 43, adapted to be connected at its opposite end to the valve stem (not shown) of a steam steering or other engine (not shown) for operating said valve.

Under the conditions shownin Fig. 1, the device is at rest, on center.v In operation, if the contact arm be moved so that the 'Contact point 1f covers the point 5, the current Will flow from said generator to rail 1; vthence to the point 1d, to point 1f, to point 5, by Wire 5a to point 5b; thence through contacts 25l 31 and magnet 32 back to the generator. he magnet 32 operates the armature 32, causing it to close the normally open contacts 10 and 12, and at the same time opens the normally closed contact 20. The current Will then flow through the Wire 1g, normally) open contact 10, Wire 11, pole 7b and armature of the motor 7,

thence through the Wire 9` normally open contact 12, Wire 13, series field 14, and wires 16 and 17 back to said generator. The motor thereupon being energized and operating through the pinion 42, train of gears, Worm and slidable block, moves said carriage so that the insulation block 27 'is car ried under said contact point 5b, thereby cutting off the current from the magnet 32, which thereupon drops its armature 32 Which opens the contacts 10 and 12, thus cutting oif the current from said motor. At the same time saidl magnet drops the armature (if it be a separate one) which carries or moves rone ofthe points of the contact 20, thus permitting said contact 2() to close. Thereupon, current from the generator Will How through Wire 1g, contacts 19 and 20, and the magnet 21, back to the generator, and at the same time through said Wire 1S, shunt field 6, Wires 18 and 17 back .to the generator. The magnet 21 attracts its armature 21, causing it to close the contact 23, whereupon the poles of said armature become shortcircuited through Wires 9 and 11, resistance element 22 and contact 23. The motor, under previously acquired momentum, thereupon operates as a generator and automatic brake, the excess energy of which is absorbed or neutralized by said resistance element, and the operation of said motor is thus promptly stopped. In like manner the movement of the carriage may be continued in the same direc- `tion, by the addition of points and Wires similar to said points and Wires 5, 5f1 and 5b successively at further distances from said point 4, and by electrically connecting said point 1t with any one of them; the carriage continuing its movement in the same direction until the insulation block 27 cuts the circuit. y

If at any time the point 1f is brought into electrical communication With a point similar to point 4.at the opposite s1de of the temporary position of the insulation block 27, the rotation of said motor and oit' the movement of said carriage will be reversed as follows: The current from said generator 1 Will then travel through section 25 of said collector bar; thence through the Wire 29 and magnet 30 back to the generator. Said magnet 30 Will operate its armature 30"L causing it to close contacts 8 and 15, and at lthe same time openthe contact 19 and thus cut the circuit through said resistance. The current from the generator 1 will now flow through the Wire 1g, Contact 8, Wire 9 pole 7a and lmotor 7; thence by wire 11 contact 15 Wire 13 series field 14 Wires 16 vand 17 back t0 said' generator. The motor will therefore be reversed, and 'through said pinion, gears, Worm and sliding block will move said carriage in said opposite direction until said insulation block 27 cuts the current from said magnet 30. Thereupon said magnet 30 will drop its armature, or armatures, thus opening the contacts 8 and 15 and closing the contact 19. The current 'from the generator to the motor Will thus be cut, and the circuit from the motor-generator through the resistance 22Will be established. At the same time the circuit through said series field will be cutgandestablished through-A said shunt field. It 'will berobserved that the shifting of the block 27 back and forth operates to transfer a variable number of the points 9,54* and 5b temporarily from oneicircuit to another, accordin to the direction and distance that said lock 27 r is shifted.

Without said resistance circuit, the tendcy would be for the momentum of the motor to carry the insulation block 27 pasttlie intended stopping point, thus permitting the circuit to close through thev reversing section of the collector-barand inlike manner to shift said block back and forth for gradually shortening distances until it came to rest at the proper position. The brake,

therefore, is an important feature of the comprising a source of electricity, a normally open contact, a motor armature, asecy ond normally open contact, and a seriesfeld for said motor; a second electric circuit comprising said source a plurality of normally open contacts in parallel, a plurality of normally closed contacts in parallel, each of said closed contacts bein in series with a corresponding one of sai normally open contacts of said second circuit, and an electromagnet, said magnet being adapted to close the normally open contacts of said firstcircuit;

one of the normally open contacts of said second circuit; means adapted to be'mechanically operated by said motor to open any fone of said normally closed contacts of said second 'circuit after the corresponding normally open contact of said second' circuit has been closed; athird electric circuit, comprising said source, a normally closed contact tact, the armature of an electric motor, a

second normally op'en contact, and the'field of saidfmotor; .a second electric .circuit including saidsource, a plurality of normally open contacts in parallel, -a plurality ofnormally closed contacts in parallel, each of said normally closed contacts being in series in par manually operatable means forV closing any -with a corresponding one of the normally open contacts of said second circuit; means for closing any one of the normally open contacts of said second circuit; means for,

automatically opening the corresponding vone of said normallyclosed contacts after the closing of any one of the normally open p vcontacts of saith-secondcircuit; a third electric circuit including the armature of said motor, a normally closed contact and a-resistance element; a' fourth electric circuit including said source a normally closed contact and a coil "for magnetizing, a translation device; means governed by said second circuit for closing the first and second norfor opening the normally closed' contact f-A said fourth circuit; said translation device being adapted to close the normally closed contact of saidthird circuit when said first circuit is open; thecontact opening means of said second circuit being governed by said first circuit; and a fifth circuit comprising.

said source and a shunt field for said motor. 3. The combination of an electric circuit including a source of electricity, a normally open contact, the armature of an electric motor, a' second normally open contact, and a series field for said motor; a second electric circuit including said source, a normally open contact, said armature, a second `normally open contact, and said series'field,

said second circuit leading through said armature in a direction opposite to the direction of said first circuit therethrough; a third electric circuit and a fourth electric circuit each including saidI source, a plu- 'ralityof normally open contacts in parallel,

and a lurality ofv normally closed contacts aqlel, each of said normally closed contacts being in series with a corresponding one of said normally. open contacts;;means for closinor any one'of the open contacts of said thir means being adapted in operation to relatively transfer a variable number of the open contacts ofsaid'third circuit temporarily to the fourth circuit, or vice versa; means for opening any one of the'normally closed contacts ofsaid third or fourth circuits, said opening means being adapted in operation to relatively transfer -a variable number of said normally. closed contacts from said third circuit temporarily to said fourth circuit, or vice versa; a fth electric circuit comprising said source, a normally closed contact, and a second normally closed contact; a sixth electric circuit comprising said armature, a normally closed contact and a resistance element;,a seventh electric circuit comprising s'aid source and a shunt field for said motor; means governed by said third circuit for closing the normally open contacts of said rst circuit and for opening one of the normally closed contacts of said or--f`ourth circuit, said closingl 80 mally open contacts of said first circuit and fifth circuit means governed by said fourth circuit for Closing the normally open oon'- taets of said second circuit and for opening the other normally closed Contact of said fifth circuit; means governed by said fifth circuit for closing the normally closed contact of said sixth circuit; and mechanical transmission means adapted to be driven by said motor for operating one of the Contact 10 transfer means of said third and fourth oircuits, the other contact transfer means of said third and fourth circuits being adapted to be manually operated.

In testimony whereof, I hereunto allix my signature, in presence of two Witnesses.

MELVIN B. BEVSON.-

lVitnesses:

CLARENCE J. HARTLEY, F. H. ZIRN.

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