US461105A

US461105A - Commutator-oiler

Info

Publication number: US461105A
Authority: US
Publication date: 1891-10-13
Anticipated expiration: 1908-10-13

Description

(No Model.)

P. L. MGGAHAN.

GOMMUTATOR OILER.

Patented Oat. 13

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UNITED STATES PATENT OEEICE.

FRED L. MCGAI'IAN, OF INDIANAPOLIS, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, OF THREE-FOURTHS TO HENRY C. BAILEY, OF EDINBRG,

INDIANA.

COMMUTATOR-OILER.

SPECIFICATION forming part of Letters Patent No. 461,105, dated October 13, 1891.

Application led November 7, 1890. Serial No. 370,708. (No model.)

.T0 @ZZ whom it may concern,.-

Be it known that I, FRED L. MCGAHAN, of Indianapolis, county of Marion, and State of Indiana, have invented certain new and useful Improvementsin Oomniutator-Oilers; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which like numerals refer to like parts.

My invention relates to improvements in devices for oiling commutators, and Will be understood from the following description. A.

In the drawings, Figure 1 is a side eleva tion of my device, the coil being in section. Fig. 2 is a horizontal section of the oiler on the line a: cc, Fig. 1. Fig, 3 is a cross-section on the line fy y, Fig. 2.

In detail, 1 is the commutator, which is mounted on the dynamo or motor in the usual manner. The oiler comprises a layer of felt or similar material 2, wrapped about a cylinder 3, which has an oil-chamber t extending nearly its entire length, closed bya cap 5, the cylinder being mounted in bearings 6, bolted to a supporting-plate 7, which isconnectcd to a weighted lever S, pivoted at 9 to aclamp 10, by means of which it'may be secured to a table or other support. The ends of the felt wrapper 2 are heldin place by screw-caps 11, as shown in Fig. 2. A central slot 12 allows the oil to escape from the chamber for saturating the felt. On either side the oilingcylinder are wipers composed of pieces of felt 13, secured in slotted heads 14., 'formed integral with spindles 15, which pass through 'the plate 7 and through the collars 1G to give a longer bearing to ihespindles, and are secured in place by pins 17, passing through the end of the spindles below the collar.

18 are springs coiled on the spindles between the plate 7 and the shoulder formed by the head 14. At the connection of the lever S with the plate 7 a heavy rib is formed, which not only strengthens the plate, but serves as a counter-balance to the adjustable Weight upon the lever 8, whose gravity holds The oiler in contact with the periphery of the cominutator. A cord 19 is connected to the outer end of the Weighted lever 8, passing helix is formed into a clamp 2l for securing it to any suitable support. A divided plate or frame 25 is located beneath this base, havmg a spring-button 2G in line with the boss or head of the core, the plate 25 being supported by Wires 27, which forni a cage for the core.

30 is a contact-plate, one end being pivoted to one side of the divided plate 25, and its op posite end is held in Contact with the opposite side of suoli plate by a spring S1, attached to the under side.

32 are the main station-circuit wires, counected by binding-posts on either side of the divided plate 25, and When the weighted core is raised and in its normal position the main station-circuit passes from one side of lsuch plate tothe other through the pivoted contact-plate 30.

29 is a loop of the main circuit, one end being connected to the divided plate 25 on one side and its other end to a block Si, su pported beneath the contact-plate 30 from the opposite plate 25 and insulated therefrom at 33, as shown.

The weight of the ball-arm S of the pivoted base-plate 7, which carries the oilers and wipers, is such as to normally hold the felt 2 of the oiling-cylinder in contact with the periphery of the oommutator, and the chamber in the cylinder being supplied with oil the feltis saturated and the oil is evenly distributed over the face of the commutator, and as the latter revolves any surplus ot' oil is carried away by the wipers on either side the oiling-cylinder. The spindle of the wiper being controlled by the coiled spring, the ten.

sion of the latter will hold the felt carried in the jaw in contact with the commutator and take up any wear in the edge of the felt.

My device operates as follows: As the coinmutator revolves, its face being in frictional contact with the Vfelt of the oiling-cylinder, the latter revolves also, while the wipers on each side carry away any surplus oil and distribute it evenly over the tace of the commu- 4 tator, preventingits accumulation in too great quantity at any pointfand thus preventing the wearing or clogging up of the brush or the Wooden oilers ordinarily used are also lia-' ble to be burned up, and the whole device requires cons-tant watching, and in case of an laccident of this kind the ordinary oiler has to be removed by the hand of the operator to prevent its total destruction. My device requires no such Watching, being entirely automatic in its operation, as I will now proceed to explain.

The gravity of the lever S is such as to nor- Inally hold the felt of the oiling-cylinder in contact with the commutator; but the outer end of this lever, as before mentioned, is connected through the cord 19 to the core 2l of the helix 22, whose wires 23 are connected to the dynamo-circuit. l/Vhile the current is passing through the coil the core will be held up by the force of the current in the position shown in Fig. l; but the instant that the cur- Y plate 25, and out over the main-circuit wire 32, the same movement pulling up th-e outer end of the lever 8, which swings upon the pivot 9, dropping the oiling-cylinders and wipers away from contact with the face of the commutator, removing them from any danger of burning, and the gravity of the core 2l holds the oiler in that position until it is replaced by the hand of the engineer. In other words, an interruption of thecurrent through the coil 22 operates to draw the oiler away from the commutator, and it will remain separated from it until manually restored. 35 is secured to the lever 8 bya set-screw to allow its adjustment thereon when desired to equalize the weight of the core 2l.

When two or more dynamos are connected to the main station-circuit, each has located in its own circuit a helix 22, weighted core 2l, and connections, as before described, for operating upon and breaking the station-circuit, causing such current to pass over a loop and ringing a bell located therein.

It is obvious that 'the shape of the oiler might be varied, and oil might'be supplied to its ibrous surface externally instead of from within, and I do not intend to limit my'- self to the form herein shown, the principle of my invention being the holding of a saturable substance in contact with the commu- The weightl tator 'by the` gravity of its support and Yth latter connected to the core of an electromagnet, which is set in the same circuit with the commutator, so that any interruption of the current in the coil will allow the core to drop, and, falling, it will draw the oiler away from contact with the commutator entirely, thus preventing its destruction by the iiashing or the heat of the current.

What I claim as my invention, and desire to secure' by Letters Patent, is the following:

l. An oiler for commutators, comprising a cylinder covered with saturable material and having an oil-chamber within, such cylinder mounted in bearings connected to a pivoted base-plate, and a weighted lever connected to such plate whose gravity normally holds the cylinder in contact with the commutator, all combined substantially as shown and described.

2. An oiler for commutators, comprising a cylinder covered with felt or fibrous material, an oil-chamber within, such cylinder revolving in bearings connected to a pivoted base-plate connected to a weighted lever Whose gravity normally holds the oiler in t contact with the commutator, one or more spindles carrying wipers also connected to su'ch pivoted plate, and springs coiled on such spindles, whose tension normally holds the wipers in contact with the commutator for distributing the oil received from the cylinder, all combined substantially as shown and described.

IOO

3. An oiler for comniutators, comprising a commutator, all combined substantially as shown and described. r Y 4. An oiler for commutators,'comprising a saturable material connected to a suitable support, the latter weighted and normally holding such material in contact with the commutator, an electro-magnet set in the circuit of the dynamo, a'weighted core therein kconnected to the oiler-support, and an alarm mechanism set in an independent circuit and IIO actuated by the fall of the core of the electromagnet, all combined substantially as shown and described.

5; In a commutator-oiler, a cylinder, an oil'- chamber Within, a saturable material upon the outside of such cylinder connected with the oil-supply, a base-plate providing bearings for suchY oiling-cylinder and pivoted to a suitable support, anv arm carrying an adjustable weight connected to such base-plate, and an electro-magnet set in the circuit of the dyln Witness whereof I have hereunto set my nemo, its core connected to the Weighted arm hand this 3d cla-y of November, 1890.

of the base-plate supportimT the cylinder T whereby the breaking of theb current oper FRED L' MCGAHAB' ates to free the ailing-cylinder from the com- Witnesses:

mutator, all combined substantially as shown H. D. NEALY,

and described. i E. B. GRIFFITH.