Control for sheet feeding apparatus

Claim 2

A switch control mechanism comprising in combination; a casing including walls enclosing a chamber, a pair of relays mounted in the casing, a pair of switches mounted in the casing and respectively connected directly to said relays, the switches including two fixed contacts extending downwardly towards the bottom of the casing and a movable contact positioned between the fixed contacts for alternately engaging the fixed contacts to close and open the switches, a control arm for actuating the movable contact in accordance with a condition sensed by the control arm, said control arm having an elongated lower portion freely projecting externally of the casing and an upper portion received and pivoted in the casing to be movable about a horizontal pivot axis, said upper portion including means engageable with said movable contact to pivot the movable contact into or out of engagement with said fixed contacts upon pivotal movement of said control arm.

Claim 3

The switch control mechanism defined in claim 1 wherein the movable contact normally engages one of the fixed contacts when the control arm is freely suspended from the casing.

Claim 4

The switch control mechanism defined in claim 2 wherein said means on the control arm engageable with the movable contact defines a slot receiving the movable contact and permitting the movable contact to engage the fixed contact when the control arm is freely suspended from the casing.

Claim 5

In combination with the switch control mechanism defined in claim 1, a circuit including a power source connected directly to one side of said relays to energize the same upon energization of the relays through said movable contact, and a motor connected to the relays to be energized when the relays are energized through said movable contact.

Claim 6

The switch control mechanism defined in claim 1 wherein said casing includes opposite sidewalls and a bottom wall extending between said sidewalls, and wherein said control arm is elongated and has an upper portion pivoted to the bottom wall of the casing and with the upper end of the control arm projecting into the casing, said upper end of the control arm having a slot extending longitudinally therein and receiving said movable contact to actuate the same upon pivotal movement of said control arm.

Claim 7

The switch control mechanism defined in claim 5 further including, means in said casing mounting said relays in the upper portion thereof, means in said casing mounting said fixed and movable contacts in an intermediate portion of said casing below said relays, an electrical connector means mounted in one of the walls of the casing adjacent said relays and connected to said relays for supplying input power thereto, and an elongated mounting arm rigidly fixed to one of the sidewalls of the casing and projecting outwardly therefrom and having an elongated slot for mounting the casing relative to a fixed support.

Claim 8

The switch control mechanism defined in claim 6 wherein said casing is made of transparent material.

Claim 9

A switch control mechanism comprising in combination; a casing including a top wall, opposite sidewalls and a bottom wall enclosing and substantially sealing a chamber, a pair of relays mounted in an upper section of the casing, a pair of switches, mounting means mounting said switches in an intermediate portion of the casing below said relays, said switches including two fixed contacts extending downwardly from said mounting means towards the bottom of the casing and respectively connected to said relays and a movable contact position between the fixed contacts and extending downwardly towards the bottom wall of the casing from said mounting means for alteRnately engaging the fixed contacts to close and open the switches, an elongated control arm for actuating the movable contact in accordance with a condition sensed by the control arm, said control arm is mounted at its upper portion to the casing for pivotal movement about a horizontal pivot axis and having a lower elongated portion freely depending vertically beyond the bottom wall of the casing for engagement with an object to be sensed, the upper portion of said control arm having an elongated longitudinally extending slot receiving the free end of said movable contact to actuate the same upon pivotal movement of said control arm, and an electrical connector means mounted in one of the walls of the casing adjacent said relays and being connected directly to said relays for supplying input power thereto.

Claim 10

A switch control mechanism comprising in combination; a casing including a top wall, opposite sidewalls and a bottom wall enclosing and substantially sealing a chamber, a pair of relays mounted in an upper section of the casing, a pair of switches, mounting means mounting said switches in an intermediate portion of the casing below said relays, said switches including two fixed contacts extending downwardly from said mounting means towards the bottom of the casing and respectively connected to said relays and a movable contact position between the fixed contacts and extending downwardly towards the bottom wall of the casing from said mounting means for alteRnately engaging the fixed contacts to close and open the switches, an elongated control arm for actuating the movable contact in accordance with a condition sensed by the control arm, said control arm is mounted at its upper portion to the casing for pivotal movement about a horizontal pivot axis and having a lower elongated portion freely depending vertically beyond the bottom wall of the casing for engagement with an object to be sensed, the upper portion of said control arm having an elongated longitudinally extending slot receiving the free end of said movable contact to actuate the same upon pivotal movement of said control arm, and an electrical connector means mounted in one of the walls of the casing adjacent said relays and being connected directly to said relays for supplying input power thereto.