Adjustable actuator arm construction

Claim 2

An adjustable actuator arm construction comprising a first arm member to be secured to a device that is to be controlled by said arm construction, a second arm member pivotally mounted to said first arm member and having an opening defining opposed spaced surface means, said first arm member rotatably carrying a threaded adjusting screw, and an adjusting member threaded on said adjusting screw, said adjusting member being operatively associated with said opposed surface means of said second arm member to pivot said second arm member relative to said first arm member in relation to the axial position of said adjusting member on said adjusting screw, said adjusting member having means wedged between said opposed surface means of said second arm member in all adjusted positions thereof.

Claim 3

An adjustable actuator arm construction as set forth in claim 1 wherein said first arm member has a slot therein receiving said adjusting member whereby said slot limits axial movement of said adjusting member relative to said adjusting screw.

Claim 4

An adjustable actuator arm construction as set forth in claim 1 wherein sAid opposed surface means of said second arm member are defined by a bifurcated end of said second arm member with said opening being the space between such forked end.

Claim 5

An adjustable actuator arm construction as set forth in claim 1 wherein said means of said adjusting member wedged between said surface means of said second arm member comprises a rod carried by said adjusting member and having opposed ends respectively abutting said opposed surface means.

Claim 6

An adjustable actuator arm construction as set forth in claim 4 wherein said rod is formed of plastic material that facilitates sliding movement between said ends thereof and said surface means.

Claim 7

An adjustable actuator arm construction as set forth in claim 4 wherein said adjustable member comprises a cylindrical part having a threaded bore passing diametrically therethrough and threadably receiving said adjusting screw.

Claim 8

An adjustable actuator arm construction as set forth in claim 6 wherein said cylindrical part has a nonthreaded bore passing therethrough in parallel relation to said adjusting screw and receiving said rod therein whereby the opposed ends of said rod project from opposite sides of said cylindrical part into engagement with said opposed surface means.

Claim 9

An adjustable actuator arm construction as set forth in claim 7 wherein said rod is fixed from sliding movement in its nonthreaded bore and is placed under compression between its opposed ends by being wedged between said opposed surface means.

Claim 10

An adjustable actuator arm construction as set forth in claim 1 wherein said second arm rotatably carries a roller thereon.

Claim 11

An adjustable actuator arm construction as set forth in claim 1 wherein a fastening member is carried by said arm members to respectively pivot said second arm member to said first arm member during an adjustment therebetween and to fasten said arm members together after the same have been adjusted by said adjusting screw.

Claim 12

In combination, a device having a rotatable control shaft and an adjustable actuator arm construction for rotating said shaft, said arm construction comprising a first arm member secured to said shaft of said device, a second arm member pivotally mounted to said first arm member and having an opening defining opposed spaced surface means, said first arm member rotatably carrying a threaded adjusting screw, an adjusting member threaded on said adjusting screw, said adjusting member being operatively associated with said opposed surface means of said second arm member to pivot said second arm member relative to said first arm member in relation to the axial position of said adjusting member on said adjusting screw, said adjusting member having means wedged between said opposed surface means of said second arm member in all adjusted positions thereof, and means securing said arm members together in an adjusted pivoted position thereof.

Claim 13

In combination, a device having a rotatable control shaft and an adjustable actuator arm construction for rotating said shaft, said arm construction comprising a first arm member secured to said shaft of said device, a second arm member pivotally mounted to said first arm member and having an opening defining opposed spaced surface means, said first arm member rotatably carrying a threaded adjusting screw, an adjusting member threaded on said adjusting screw, said adjusting member being operatively associated with said opposed surface means of said second arm member to pivot said second arm member relative to said first arm member in relation to the axial position of said adjusting member on said adjusting screw, said adjusting member having means wedged between said opposed surface means of said second arm member in all adjusted positions thereof, and means securing said arm members together in an adjusted pivoted position thereof.

Claim 14

A combination as set forth in claim 11 wherein said first arm member has a slot therein receiving said adjusting member whereby said slot limits axial movement of said adjusting member relative to said adjusting screw.

Claim 15

A combination as set forth in claim 11 wherein said opposed surface means of said second arm member are defined by a bifurcated end of said second arm member with said opening being the space between such forked end.

Claim 16

A combination as set forth in claim 11 wherein said means of said adjusting member wedged between said surface means of said second arm member comprises a rod carried by said adjusting member and having opposed ends respectively abutting said opposed surface means.

Claim 17

A combination as set forth in claim 14 wherein said rod is formed of plastic material that facilitates sliding movement between said ends thereof and said surface means.

Claim 18

A combination as set forth in claim 14 wherein said adjustable member comprises a cylindrical part having a threaded bore passing diametrically therethrough and threadably receiving said adjusting screw.

Claim 19

A cOmbination as set forth in claim 16 wherein said cylindrical part has a nonthreaded bore passing therethrough in parallel relation to said adjusting screw and receiving said rod therein whereby the opposed ends of said rod project from opposite sides of said cylindrical part into engagement with said opposed surface means.

Claim 20

A combination as set forth in claim 17 wherein said rod is fixed from sliding movement in its nonthreaded bore and is placed under compression between its opposed ends by being wedged between said opposed surface means.

Claim 21

A combination as set forth in claim 11 wherein said second arm rotatably carries a roller thereon.

Claim 22

A combination as set forth in claim 11 wherein a fastening member is carried by said arm members to respectively pivot said second arm member to said first arm member during an adjustment therebetween and to fasten said arm members together after the same have been adjusted by said adjusting screw whereby said fastening member comprises said means for securing said arm members together.