US1361937A - Switch - Google Patents

Description

.F. A. WAGNER AND F. H. HARTZELL. SWITCH.

APPLICATION FILED MAR- 20, 1916.

Patented Dec. 14, 1920.

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UNITED. STATES PATENT OFFICE.

FRANCIS A. WAGNER AND FOREST H. HARTZELL, OF DAYTON, OHIO, ASSIGNORS TO THE AMERICAN MECHANICALTOY COMPANY, OF DAYTON, OHIO, A CORPORATION OF OHIO.

SWITCH.

Specification of Letters Patent. t t 14,,1g)2() Application filed March 20, 1916. Serial No. 85,261.

To (ZZZ whom it may concern Be it known that we, FRANCIS A. WAGNER and Fonnsr H. .HARTZELL, citizens of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Switches, of which the fol-- lowing is a specification, reference being had therein to the accompanying drawing.

This invention relates to switches. It is an object of the invention to provide a multiple position switch which is operated by continuous movement of the switch arm in one direction. It is a further object of the invention to utilize this switch in connec tion with a motor so that when the switch arm is at either extreme of its movementthe motor will rotate in the same direction. As the arm moves from one extreme to the other in the first intermediate position the current will be out ofl", in the second inter-- mediate position the motor will rotate in a reverse direction and in the third intermediate position the current will again be out off. Another object of the invention is to so combine the switch with a motor and its sake ofclearness; Fig. 2 is a plan view of bed plate that the wiring may be of a mini mum amount and of the greatest simplicity,

the parts being thoroughly insulated, neatly arranged, compact and simple.

In the accompanying drawings, Figure 1' is a plan View of the combined switch and motor, parts being broken away for the the switch with the cap removed; Fig. 3 is; a sectional view through the switch on the line 3 3 of Fig. 1, looking in the direction of the arrows; Fig. 4 is a detail inverted view of the movable contact member; Fig. 5 is a diagrammatic View showlng the circuit with the movable contact member in a position to cause the motor to rotate in one direction; Fig. 6 is an auxiliary diagrammatic view showing the position that the movable contact member occupies relatively to the position shown in Fig. 5 when the circuit is open; and Fig. 7 is an auxiliary diagrammatic view showing the po-' sition that the movable contact member ocoupies relatively to the position shown in Fig. 5 when the motor is rotating in a direction opposite to that in which it rotates when the movable contact member is in the position shown in Fig. 5.

In the particular embodlment of the 1nvention here shown we have provided a motor base 1 upon which is mounted a suitable motor 2 provided with the usual armature andfield circuit. The forward portion of the base is provided with a circular opening 3 and with lugs 4 projecting into the said opening. A plate 5 comprising any suitable insulating material, such as fiber, is mounted above the opening 3 and attached to the lugs 4c in any suitable manner. Fixed to the plate 5 are a plurality of separated metallic contact members 6, 7, 8 and 9. As here shown, the members are arranged circumferentially around the plate 5 and are elongated. The members 6 and 9 constitute one diagonal pair and the members 7 and 8 constitute another diagonal pair. Each member is fastened to the base at one end by means of a screw 10 which trated diagrammatically in Fig. 5 at 17. A

conductor 18 is attached at one end to the lower end of the binding post 13, extends along the bottom of the base 1, is passed through an opening 19 in the plate 5 and is attached to the contact member 9 by means of its fastening screw 10. In this connection it may be stated that the plate 5 is provided with a plurality of such openings 19, there being an opening adjacent each of the contact members, through which the several conductors may pass and be attached to their contact members. Attached at one end to the lower portion of the binding post 14: is a conductor 20 which is connected to the armature coils, indicated generally and diagrammatically in Fig. 5 at 21, at its opposite end. The circuit through the armature is completed by a conductor 22 which connects the same with the contact member 6, the conductor passing through one of the openings 19 above mentioned. At 23 in 40 i and 41 to limit the movementof the switch ,the contact members 7 and 8, respectively. 6; When in this position the circuit is open The conductors 24 and 25'are also located below the base plate of the motor and extend through openings 19 in the manner trally between the contact members. '10

above described. The plate 5 is also provided with a central vertically extending stud 26 of wood or some other suitable insulating material. The stud is located ceIX member 27 of insulating material provided with an opening 27 is rotatably mounted upon the stud 26. This member is provided upon its lower surface with a pair of elongated spaced-apart parallel strips 28 and 29, of metal or, some other suitable conducting material. These strips are attached to the member 27 by providing openings 30 in the member intowhich the ends of the respective contact members 28 and 29 are bent, as shown at 31. The member 27* is rotated by means of a switch arm 32 which is attached to the same in the following manner. .The switch arm is provided with a central opening 32 adapted to vreceive the stud 26; The member 27 is provided at one end thereof and centrally between the elonabutment or a washer .36, at the upper end vided. with a of the stud 'a'nd fastened thereto by means of a wooden screw 37. We have also provided a casing 38 to. inclose the switch and the-contact members and this casing is procircumferential slot 39 through which the switch arm 32 projects. 'Theends ofthe slot 39 constitute-stops 4:0

arm at the two extremes Theoperation of our switch is substantially as follows-Assuming that the parts are in'the position shown in Fig. 5 the current will pass in the. direction of the arrows 5 through the conductors16 and 20, through the'armature' 21, through the conductor 22 to the contact member 6, across'the contact member 28 to the contact member 7, then through the field coils in the direction of the arrow to the contact-member 8, across the contact member29 to the contact member 9 and then back to the battery. It will be assumed forconve nience sake that'when, the current is passing throughthe circuit, as shown, in the \direction of. the arrows, the

motor is rotating, clockwise. It will be seen that when the motor is sorotating the switch and no current isfiowing through the motor and the same will stop. As the arm is moved to the next position the members 28 and 29 will assume a horizontal position and span the members 6 and 8 and 7 and 9, respectively, as shown in Fig. 7. When the parts are in the last described position it will be obvious that the flow of current through the field coils is reversed. This reversal of the flow of current through the field coils will also reverse the direction of rotation of the motor and cause the same to rotate counterclockwise. As the movement of the switcharm is continued the members 28 and 29 will again assume a diagonalposition, whereby the circuit will again be opened and the motor will stop. As-the movement of the switch arm is still further continued it will finally engage the stop 41 and when so engaged the members 28. and 29 will again assume a vertical position, as shown in Fig. 5, and the current will so flow through the field coils as to cause the motor to again rotate in a clockwise direction.

It will be seenthat we have provided a five position switch. In two positions the motor will rotate clockwise, in two other positions the circuit will be broken and in the central position the motor will rotate counterclockwise. \Vhen the switch arm is against either of the stops 40 or 4.1 the motor is rotating-cloclnvise, when the switch arm is in the second position the motor is not-running, when in the third position it'is reversedand when in the fourth position itis again stopped. It is to be understood that it is immaterial, however, whether the motor rotates clockwise or counterclockwise,. the

specification of the direction of rotation 'be-- mg merelyfor the sake of convenience and in a like manner it is immaterialwhether the parallel contact members 28 and 29 are in vertical or horizontal or any other osition as far as the operation of the device is concerned, the particular position being specified merely to more clearly bring out the operation thereof.

It will. be seen that the several changes are performed by a continuous movement. of the operating arm in one direction.

We have also provided a, very co pact and simple structure in which the cofid ing wires are allunexpos'ed and very short.

, The switch arm and movable member 2'( are easily replaceable and are characterizedby great simplicity, the aim being held ti htly in engagement with 'the member 2? by means of the spring 35. The parts are also.

preferably insulated. The switch "can be utilized not only inconnectiofi with large uctmotors but is also especially adapted for use in connection with small or toy motors. The

particular switch here shown is also applicablefor use wherever a reversal of the di-' whether in connection with a motor or elsewhere. For instance, we have here shown the circuit in which the current is reversed as comprising the circuit of a field coil, yet it will be obvious that the reversal of the motor would take place in the same manner if the current through the armature were reversed instead.

Having thus fully described our invention, what we claim as new and desire to secure by Letters Patent, is

1. In a switch, the combination, with a plate of insulating material and pairs of contact members arranged on said plate,the members of each pair being electrically connected, a plate having oppositely positioned contacting strips to connect the opposite members of said contacts, a stud secured in the plate of insulating material, a spring .on the stud forcing said plates toward each other, a housing for said mechanism, having a slot and a handle secured to said second plate and movable in said slot to open and close the electric circuit.

2. In a switch, a plate of insulating material having an opening, a contact member mounted on said plate, one end of said contact member extending into said opening, and a combined binding post and clamping device at the other end of. said contact member, said plate of insulating material being provided with an opening adjacent said combined binding post and clamping device through which the conductor 18 led to the binding post.

3. The combination, with a motor base having an opening, of a plate of insulating material mounted above said opening, contact members mounted on said plate, a pair of binding posts mounted upon said motor base adjacent said plate; openings in said plate adjacent said contact members, and conductors connected at one end to said contact members passing through said openings and connected to said binding posts and motor circuits.

In testimony whereof we affix our signatures.

FRANCIS A. WAGNER. FOREST H. HARTZELL

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