US958354A - Electric motor. - Google Patents

Description

C. E. AVERY;

ELECT-RIG MOTOR.

' Arrmcnmnnmm APB.8, 1909 Patented May 17,1910.

ATTORNEY .UNITED ATE s PnrENT oFF1oE.'

CHARLES E. AVERY, or innsnr CITY, nniv JERSEY, Assumes TO human-1v macrmchr. sums comrm,

nnn'cmc moron;

a citizen of the United States, and a resident companying drawings,

"durability oi the device of the city of Jersey City, Hudson-county New Jersey, have invented certainnewand Motors, of

useful Improvements in Electric which the following is a'full, clear, and exact description, reference being had to the acfornaing part of this specification. I

My invention relates to electric motors, and the object thereof is the construction of a toy motor, adapted; to be 0 erated on a battery circuit, and to provi e therefor a simple arrangement of the parts in order to reduce the" cost of manufacture and; secure and reliability of operation 7 A further object thereof is the provision of a switch, whereby the motor may be started in either direction and reversed at will.

In thedrawings, Figure 1 is aside'elevation of the motor; Fig. 2' a plan; Fig. 3 a transverse section on'i-he line 3 -3, (Fig. 1) 3 Fig. 4 a detail of the starting and reversing switch; Fig. 5 is a detail showing the switch arms reversed; and Fig; 6' is adetail view showing a modified construction of the switch.

Similar reference characters are employed to designate like parts in all the views;

In the preferred form shown in the drawing, the motor comprises a bed plate 1, provided with standards 4 and 5 in which a crank shaft 6- is journal'ed and on one of which the switch 1s mounted. At one end, the bed plate l,-is providedwith a standard -8, to which an electro maghct 9 is secured,

free'lyf on the studs, notwithstanding the movement imparted to the Slight rockin armat'urehy t 1e connecting r0d'14, when, as in the particular construction illustrated, it is at one end rigidly secured to the armature. By rigidly connectin the armature to the connecting rod, I obviate all lost motion at a coItroRA'rIon or Specification ot Lettcrs'latc nt' I a inmtnmea April- 8, 1900. Serial- No. usjeaa NEW JERSEY.

PatentedM'ay 17.2 1 '91 O.

thatpoin't, thus seem-m more positive and senslti'vewoperation oft motor, While'le'seeni'n the expense of constructron and as I semb mg. The other end of the connecting rod is journaled'on a crank '15,:foflned'on the shaft 6, on which 'a fly-whecllfi, and a driving pulley 17, are fixed; Screws: 18,

forming adjustable bearings for the a-sink shaft, are threaded in the standards and 5.,

A startingand reversing. switch, cornpris-'- ing a lever 20, and resilient: conducting" springs 21 and 22, is pivotally mountedupon 7 a plate 24,. which is secured-tothe standard- 4, from which it is insulated 'by a sheet of suitable non-conducting material 25. 'The by a single screw 26, which passes through them servingas a pivot for the switch and clamping't-he lever against. the plate-with suificient' the arm 20".

switcharms from injury, and oneof which may act as astop to limit the movement-of pressure to hold it in any .positi'onf to which it may be adjusted on its ivot by The plate 24, is provi ed with wings 27, which form guards to'protech the "re switch, the plate and the insulatingsheet".v

preferably secured to the. standard the lever 20 'in. o11e direction; itsmovement' in the opposite direction may he limited'by a stop 29,.projecting from the platc'24;

The electrical connection of the motor isclearly .shown in Figs. 2, 3 and 4. One terminal of the circuit is connected to an insulated binding post 30, to"whichone terminal of the magnet 0011s is connected. Theopposite terminal of the coils 'is connected with the insulated plate 24, with which the switch arms 21,22 are in electrical contact.

The other terminal of the circuit is connected with a binding post 31, connection with the crank shaft 6, (which is made off-conducting material through the frame of themotor; but it wi l, of course, be understood that these connections may he difi'erently-arran ed. 4 The crank shatt 6, is formed with a'camlike ofi'sct 32, which projects from the shaft at an angle of abou This offset is the shaft.

The conducting springarms 21 and 22 are arranged one on each side 'of the shaft '6, so that tl1c.oli'set 32 will contact with one or the other of the conducting arms at, each revolution of the shaft so as to close the-cirv cuit through the arm which may have been which is in electrical t 90 degrees to the crank. preferably formed by bending 5 thrown into the ath of the offset 32, as clearly shown in ig. 4;, in which the switch arm 21 is shown in contact with the offset 32, the opposite arm 22 being out of the path of movement of the offset, so that the circuit will not be closed throughthat arm. The result of this arrangement is that with the switchin the position shown in Fig. 4, the cam or offset 32 will contact with the spring arm 21 at each revolution of the shaft while the crank is in the upper -half of its revolution, thereb closing the circuit-through the magnet, an the fly-wheel will rotate in the direction shown by the arrow in Fig. 2. But if the switch be reversed to the position shown in Fig. 5, then at eachrevolution of the shaft, the cam 32 will contact with the spring arm 22, while the crank is in the lower half of its revolution and closethe the lugs bein magnet circuit, attracting the armature to turn the fly-wheel in the opposite direction. All that is necessary to do therefore to start the motor, is to turn the wheel slightly until the cam 32 contacts with the switch arm that has been thrown into, osition,'when the circuit will be establishe to actuate the. motor -in the direction for which the switch has been set. T0 reverse the motor while running, the switch is simply moved into the opposite position and the motor will at once assume t e opposite direction of rotation. The speed of the motor may be varied by moving-the lever 20 to adjust the position of the'farms' 21 and 22 for a longer or shorter contact with the shaft or ofi'set.

In Fig. 6 is illustrated a modified construction of the switch, in which the switch arms are designated by the numerals 35 and- 36 and the switch lever by the numeral 37. In this construction, the switch arms consist of a single strip of spring conducting metal and are removably held in position on'the switch arm by their own resiliency, thus permitting the removal and re lacement of, the arms in case'of injury or deterioration due to s arking which maybccur when a relative y heavy current is employed, without requiring the removal of an other parts. In this construction,the switc lever is provided with projecting lugs 38, The strip for the switch arms is formed with a loop a1, which closely embraces the lug 40. From this point, the arms 35 and 36 diverge and then extend upwardly on opposite sides of the crank shaft. Their divergent portions bear against the In 38 and 39, and the arms may be instant y put in place by simply placing the 100 41 over lug 40 and press ing; the arms together to permit the diverging portions to enter between the lugs 38 and 39, against which they will bear with sufiicient pressure to hold them slightly bent or curved to; form recesses or the spring.

39 and 40.

securely in place,

What I claim is:

- 1. In an. electric motor, the combination with a bed plate provided with standards for a crank shaft and magnet, of an electro-mag- .netsupported by' its standard, studs on the magnet, an armature mounted;.to reciprocate on said studs, a crank shaft carrying a flywheel, and a connecting rod between the armature and the crank shaft, substantially as set forth.

2. In an electric-motor, the combination with an operating magnet, an armature, supports on which the armature is mounted to gaging said arms for removably holding I them in place on the switch lever. I

4. In an electric motor, the combination with the crank shaft, .of an offset thereon forming a circuit-closing, contact, a switch lever, resilient conducting arms extending on opposite sides of the crank shaft and means engagin said arms, whereby the same are removalily held in place on the switch lever by their own resiliency.

5. In an electric motor, the combination with a bed plate provided with standards for the crank shaft and magnet, of an electromagnet supported by its standard, studs projecting from the magnet cores, an armature mounted to reciprocate on said studs, a crank shaft carrying a fiy-wheel, and a connecting rod, one end' of which is rigidly fixed to the armature, and the opposite end of which is journaled on the crank shaft, substantially as set forth.

6. In an electric motor, the combination with a crank shaft'journaled in standards on the bed plate, a plate supported on one of said standards, a reversing switch pivotallymounted on said plate, having arms arranged on opposite sides of the shaft and guardsfor said arms carried by said plate, substantially as set forth.

'7. In an electric motor, the combination with a crank shaft carrying a circuit closing contact of a reversing switch com risin a switch lever and conductin arms fiirmed f a continuous metallic con uctin stri held removably on the switch lever by lugs ormed thereon, and extending on opposite sides-of the crank shaft.

CHARLES E. AVERY. Witnesses: B. Fnnnnmonr, OONBADDIEHL.

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