Fly-wheel

Claim 2

A baler comprising a pressing ram and a driving mechanism that drives said ram, said driving mechanism comprising a fly-wheel, said fly-wheel comprising a first member and a second member connected by shear means for rotation together about a common axis, said first member being mounted on a driving shaft and said second member being mounted on a driven shaft, the two members being relatively rotatable with respect to one another about said axis upon overload, said shear means including at least one shear pin slideably mounted in a holder and said pin normally interconnecting said members to prevent relative rotation until overload fractures said pin, advancement means operatively associated with said pin that automatically displaces the remainder of the fractured pin with respect to said axis following overload into operative position in which the two members are reconnected and relative rotation between the two members prevented.

Claim 3

A baler as claimed in claim 1, in which said pin is mounted on a side of said fly-wheel.

Claim 4

A baler as claimed in claim 2, in which said pin is located entirely within the outer periphery of said fly-wheel.

Claim 5

A baler as claimed in claim 3, in which said pin extends radially with respect to the axis of rotation of said fly-wheel.

Claim 6

A baler as claimed in claim 2, in which said holder is releasably connected to the side of said first member by a quick-action connection.

Claim 7

A baler as claimed in claim 1, in which said advancement means comprises a compression spring in said holder.

Claim 8

A baler as claimed in claim 1, in which there are a plurality of pins and holders arranged in groups, each group being arcuate in configuration and centered on the rotary axis of said fly-wheel.

Claim 9

A baler as claimed in claim 1, in which said members face one another and one end of said holder is covered at an adjacent end of the driving shaft by a disc located between said members, means retaining said disc on the fly-wheel against movement in axial and radial directions with respect to said axis, said disc being rotationally adjustable about said axis and fixable in any one of a plurality of positions around said axis, said disc having at least one filling aperture through which a shear pin can be inserted into said holder.

Claim 10

A baler comprising a pressing ram and a driving mechanism that drives said ram, said driving mechanism comprising a fly-wheel, said fly-wheel comprising a first member and a second member connected by shear means for rotation together about a common axis, said first member being mounted on a driving shaft and the second member being mounted on a driven shaft, the two members being relatively rotatable with respect to one another about said axis upon overload, said shear means including at least one shear pin slideably mounted in a holder, said pin having severable portions and normally interconnecting said members to prevent relative rotation until overload fractures a portion of said pin, advancement means bearing on said pin to automatically displace the remainder of the fractured pin laterally with respect to the axis following overload into operative position that reconnects said two members and prevents relative rotation between the two members, said advancement means normally urging one of the portions of the pin from said first member into a cavity in the second member, said cavity having a recess positioned to receive the fractured pin portion and automatically discharge same upon relative rotation between the members.

Claim 11

A baler comprising a pressing ram and a driving mechanism that drives said ram, said driving mechanism comprising a fly-wheel, said fly-wheel comprising a first member and a second member connected by shear means for rotation together about a common axis, said first member being mounted on a driving shaft and the second member being mounted on a driven shaft, the two members being relatively rotatable with respect to one another about said axis upon overload, said shear means including at least one shear pin slideably mounted in a holder, said pin having severable portions and normally interconnecting said members to prevent relative rotation until overload fractures a portion of said pin, advancement means bearing on said pin to automatically displace the remainder of the fractured pin laterally with respect to the axis following overload into operative position that reconnects said two members and prevents relative rotation between the two members, said advancement means normally urging one of the portions of the pin from said first member into a cavity in the second member, said cavity having a recess positioned to receive the fractured pin portion and automatically discharge same upon relative rotation between the members.

Claim 12

A baler as claimed in claim 9, in which said cavity widens in an axial and in a radial direction from a wall portion of the cavity which normally supports the shear pin.

Claim 13

A baler as claimed in claim 10, in which said cavity is located near the periphery of the second member.

Claim 14

A baler as claimed in claim 11, in which said cavity is located in a circular flange of the second member.