US1084077A - Reversing-switch. - Google Patents

Description

T. B. ELLIOTT.

REVERSING SWITCH.

APPLICATION FILED APR.10, 1911.

1,084,077, Patented Jan. 13, 1914.

lmwntor A F I 1 w v ,D I I witnesses $4 .4 a; 4 L [al @LZ & Jim-mu THOMAS BURCHFIELD ELLIOTT, OF INDEPENDENCE, KANSAS.

REVERSING-S\YTTCH.

Specification of Letters Patent.

Patented Jan. 13.1914.

Application filed April 10, 1913 Serial No. 620,123.

To all whom it may concern:

Be it known that I, Tnoinvs Bnnonrnnio Ennio'i'r, a. citizen of the United States, residing in Independence, in the -eounty of Montgomery, State of Kansas, have invented a certain new and useful Improvement in. Revcrsing-Switches for llither Direct or Alternating Current Electric. Motors; and I do hereby declare that the following 1s a full, clear, and exact description of my invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has reference especially to electric switches for the purpose of reversing direct cin'rent motors, and also of reversing alternating current electric motors.

The object oft my invention is to provide a'switch by means of which it may be possible to rovers. an electric motor which is on a. direct current as well as to reverse an electric motor which is on an alternating' current, by reversing the switch, and to provide. this reversing switch for electric niotors, especially, and in such form that the same can be easily covered with non-conducting material, except. the end of the lever which protrudes beyond the cover: this lever having on the end thereof a. knob, which knob is insulated from the rest of the in strunient.

Figure 1 is a top plan view of my invention showing the reversing lever as it would be when the currentdisconncctcd from the 1noto-; also indicating; where the lever would be upon the left hand side when the motor is running in one direction, and the position 'where the lever would be on the right hand side when the motor was driven in the other direction. Fig. 2 is a sectiona side view taken through the instrument on a line drawn to the lett ol' the lever. hill. 3 is atop plan view of my invention showing the position of the lever when the motor is being driven in'one direction. Fig. 4 is a. top plan view of the same showing the position ol' thelever when the. motor is being driven in the opposite direction.

lleterring to the drawings, 1()l't (lllb the base of the instrument which is constructed out of non-eoiuluctine material.

represents the cover of the instrument which is lined with' insulating material and arranged to cover all coiulucting parts of the switsh.

0 represents the switch lever, (Z the knob on the lever. e the screw holding the lever 0 to the base a.

f is a. spring catch to hold the lever when placed.

9 is a. metal bar under which lever (I slide when adjusted from the center position to either side of the instrument.

7L1 and k are conducting bars, one being above the lever 0 and the other below the lever 0; both of which bars are secured to the lover a. Lever c is of non-conducting material. The conducting bars are designed for the purpose of contacting with several extendingconducting bars m m m m m, of, a3", and 00".

The binding; posts Z are for the current wires supplying the. power.

7c are binding; posts for wires to main winding on the motor.

j are. binding posts for wires to auxiliary windingon the motor. In direct current motor the wires from run to the brushes and the wires "from is run to the fields, or vice versa.

The conducting bars :0, :0 m, m and of are placed in deprssions in the base and are designed for contact with the metal bar it on the under side of lever The conducting bars 122?, 1217-, m, mi and m are for contact with metal bar 7L2 on upper side of lever 0.

a a", a and n are wires or bars placed in depressions in the under side of the base and connect opposite contact posts. The

conducting bars m", we. and m are placed on the left side of the lever c and secured to the base. in such a manner as to come in contact with the metal bar ]L2 on the top at lover when the lever cplaced in the left hand position on the base. The metal bars .1 :r" and a are placed on the left hand position of the lever and are secured to the base in depressions in the base that cause them to come in contact with the metal bar on the under side of the lever c.

The metal bars or and m are placed on the right hand position of the lever 0 and are secured to the base so as to come in contact with the metal bar if on the top side of lever c when the lever c is placed in the right hand position and the metal bars :0 and 11: are placed on the right hand side and in depressions in the base that bring them in contact with the metal bar h on the under side of the lever 0 when the lever 0 is in the right hand posit-ion.

' ,the spring catch In operation my invention can be used to sto the motor and to start the motor in a di' erent direction. The motor may be either an alternating or a direct current motor.

':When this lever 0 is placed in the center position, the lever c then being without any electrical connection cuts off the current from the motor. That bar g under which the lever 0 moves is provided with lugs arranged in an are centered to the pivotal point of the lever c, said lugs have rounded points which are adapted to lit in a hole in on the lever c and hold said lever in P01tl011 when placed in any one of the three operative positions desired for said lever. The middle position stops the motor; the right hand position starts the motor in one direction; their by placing the lever hack to the middle position it stops the motor, then by placing the lever to the left hand position, starts the motor in the other direction. I understand that the same resu ts might be obtained in part with a double pole double throw lrnife switch, but there is no covering for such a switch and it is not suited for places where the user is liable to come in contact with the current while trying to throw the switch. The Wires n n WP and a are insulated wires which pass beneath through the base and connect the metal contacts.

When the lever c is in the center position the current comes in on the wire attached to the binding post Z and passes through the conducting bar 50 to the conducting bar h beneath the lever c, and since the lever c is made of non-conducting material the conducing bars k and h are insulated from each other and there being no other electrical connection the current is cut off. However, if the lever c is shifted to the left of its center position the current will pass from the lower conducting bar 72, to the conducting bars and a From the bar 0: that part of the current will pass through the connecting wire a to the binding post j, and from there in the Wire P to one winding on the motor, then back from the motor to the bar m and through the connecting wire 12, to the conducting bar m and on through the bar b above the lever c to the bar we", and from there in the return. wire to its source. The other part of the current passes from the bar :0 through the connecting wire if off by post is to the other winding on the motor; then back from the motor to the conducting bar m and through the connecting wire 12, to the conducting bar m on the opposite side of the lever and through said bar on through the top bar If to the bar m and off on the return wire to its source. When the lever 0 is shifted to the right hand of its center position the current comes in on the i lower bar h as before and passes through the said bar to the bars as and mama bar m" that part of the current passes through the w1re P to one wlndmg on the motor and returns in the same direction as it did when the lever c was in contact on the left hand side; but from the bar the other part of the current over the wire to the other winding of the motor and returns from the motor to the bar m, this being the direction just opposite to that in which the current traveled when the lever 0 was in contact on the left hand side. From the bar we the current passes through the bar h and on through the bar m oil in the return Wire to its source.

The description of the directions of the current as given herein are some of those which possible and practicable, yet not all that might be used, and any of the connections and descriptions of the current might be changed, and yet be within the principles of this invention as it can be read 11y seen that by changing some parts of the instrument the wires could be connected up difierently on the motor and would give the same results.

Having described my invention what I claim is:-

1. In an electric reversing switch, a nonccnducting base, a lever of non-conducting material secured to said base, two bars of conducting material secured to opposite sides of said lever, bars of conductin material secured to the base on opposite sides of said lever and arranged so that part of said bars contact with one of the conductingbars secured to the lever, and part contact with the other conducting bar secured to the lever when said lever is shifted into either one-of its operative positions, wires connecting in pairs four of said bars on one side of said lever with four of said bars on the other side of said lever, and binding posts secured to said pairs of bars:

2. In an electric reversing switch, a nonconducting base, a non-conducting lever pivotally secured to said base, two conducting bars secured to opposite sides of said lever, a conducting bar secured to the base and in contact with one of the conducting bars secured to the lever, a conducting bar secured to the base and in contact with the other conducting bar secured to the lever, four oppositely disposed conducting bars secured to the base on either side of said lever, wires connecting said bars in pairs and binding posts upon said bars.

3. In an electric reversing switch, a noncouducting base, a non-conducting lever pivthe lower conducting bar secured to the lever, four conducting bars secured to the base on theright hand side-of the lever, four conducting bars secured to the base on the left hand sideof the lever, two of said bars on the right hand side and two of said bars on the left hand side of said lever being above said lever, and two on the righthand side and two on the left hand side being below said lever, wires connecting the four conducting bars on the right hand side with four conducting bars on the left hand side;

, said connections being between one lower baron the right and one lower bar on the left, and between one upper bar on the right and one upper bar. on the left; and also, between one upper bar on the right and one lower bar on the left, and between one lower bar-on the right and one upper bar on the left and a binding post upon each pair of said bars.

4. In an electric reversin switch, a nonconducting base, a lever o non-conducting material pivotally secured to the base, a bar of conducting material secured to the upper side of said lever, a bar of conducting niaterial secured to the lower side of said le ver, a conducting bar secured to the base in. contact with the upper conducting bar on the lever, a conducting bar secured to the base in contact with the lower conducting bar on the lever, four conducting bars secured to the base on the right hand side of the lever, four conducting bars secured to the base on the left hand side of the lever, two of said bars on each side being above and two below said lever, wires connecting the bars on the right hand side in pairs with the bars on the left hand side, the connection of two pairs being between opposite upper and lower bars and the connection of two" pairs being between bars on'the same side of the lever, one pair being opposite upper, and one pair opposite lower bars and binding posts upon said bars.

THOMAS n'aaearirrn amour.

Witnesses:

D. A. CKIPPS,

EMMA Farms.

Images