Milking unit support and detacher mechanism

• US 4,228,763 A
• Filed: 05/03/1978
• Issued: 10/21/1980
• Est. Priority Date: 05/03/1978
• Status: Expired due to Term

• Current Assignee: Dairy Systems Incorporated
• Original Assignee: Dairy Systems Incorporated
• Inventors: Harwood, Edward D., Heidecker, Robert F.
• Primary Examiner(s): Chamblee, Hugh R.
• Application Number:
  US05/902,354
• Time in Patent Office: 902 Days
• Field of Search: 119/14.08, 119/14.21, 119/14.1, 119/14.11, 119/14.13, 119/14.14, 119/14.45
• US Class Current: 119/14.08
• CPC Class Codes: A01J 5/017 Automatic attaching or detaching of clusters

Abstract

A milking unit support and detacher mechanism for supporting a milking unit when the milking unit is attached to a cow for milking. The milking unit support and detacher mechanism includes a milking unit support arm movable between a first position wherein the arm extends outwardly for supporting a milking unit when the milking unit is attached to a cow for milking. The milking unit support and detacher mechanism also includes means for supporting the milking unit support arm for movement between the first position and the second position, and means for retracting the milking unit and for moving the milking unit support arm from the second position to the first position, the retracting means including a flexible retracting member connected to the milking unit, and means for pulling on the flexible retracting member.

Claims

1. A milking unit support and detacher mechanism for supporting a milking unit when the milking unit is attached to a cow for milking, said milking unit having a teat cup assembly and at least one hose member extending from said assembly, the milking unit support and detacher mechanism comprising:

a milking unit support arm movable between a first position wherein said arm extends downwardly and a second position wherein said arm extends outwardly, said milking unit support arm having a free end engageable with said hose member in spaced relation to said teat cup assembly for supporting said milking unit when the milking unit is attached to a cow for milking and when said arm is in said second position; and

support means for said milking unit support arm including first means disposed for rotation about a vertical axis and second means disposed for pivotal movement about a generally horizontal axis, and said milking unit support arm attached to one of said first and second means for movement about said vertical axis and said horizontal axis.

2. A milking unit support and detacher mechanism as set forth in claim 1, wherein said support means for supporting said milking unit support arm includes means for biasing said milking unit support arm toward said second position.

3. The milking unit support and detacher mechanism set forth in claim 2 wherein said biasing means is a spring.

4. A milking unit support and detacher mechanism as set forth in claim 1 wherein said support means for supporting said support arm includes means for supporting said support arm for pivotal movement about a vertical axis wherein said free end of said support arm for supporting the milking unit is movable from a rearward position to a forward position away from the milking unit, and said first means includes a bracket for supporting said support arm for pivotal movement about a horizontal axis.

5. The milking unit support and detacher mechanism set forth in claim 4 wherein said support means for supporting said support arm further includes means for biasing said end of said support arm forwardly when said end of said support arm is in said rearward position.

6. The milking unit support and detacher mechanism set forth in claim 1 wherein said means for supporting said milking unit support arm includes a bracket supported for pivotal movement about a horizontal axis, said support arm attached to said bracket and movable in an arcuate path from said first position to said second position during pivotal movement of said bracket about said horizontal axis.

7. The milking support and detacher mechanism set forth in claim 1 and wherein said first means includes a vertical shaft having a vertical axis, a first bracket supported by said vertical shaft for rotation about said vertical axis, a generally horizontal pivot shaft supported by said first bracket and having a generally horizontal axis, and said second means includes a second bracket supported by said horizontal shaft for pivotal movement about said generally horizontal axis, and said milking unit support arm is attached to one of said brackets for movement about said vertical axis and said horizontal axis.

8. A milking unit support and detacher mechanism for supporting a milking unit when the milking unit is attached to a cow for milking and retracting the milking unit away from the cow at the completion of the milking cycle, said milking unit having a teat cup assembly and at least one flexible hose member extending from said assembly, the milking unit support and detacher mechanism comprising:

a milking unit support arm movable between a first position wherein said arm extends downwardly and a second position wherein said arm inclines downwardly and outwardly toward said milking unit support arm having an end engageable with said hose member in adjacent but spaced relation to said teat cup assembly for supporting said milking unit when said milking unit is attached to a cow for milking and when said arm is in said second position,

pivotal support means for supporting said milking unit support arm for movement between said first position and said second position, and

means for retracting said milking unit and for moving said milking unit support arm from said second position to said first position including a flexible retracting member having a first connecting portion connected to said teat cup assembly and a second connecting portion connected to said pivotal support means, and means for pulling said flexible retracting member whereby to simultaneously retract said milking unit and move said support arm from said second position to said first position.

9. A milking unit support and detacher mechanism as set forth in claim 8 wherein said means for supporting said milking unit support arm includes means for biasing said milking unit support arm toward said second position, said end of said milking unit support arm including means to wedgingly receive said hose member.

10. The milking unit support and detacher mechanism set forth in claim 9 wherein said biasing means is a spring.

11. A milking unit support and detacher mechanism as set forth in claim 8 wherein said means for supporting said support arm includes means for supporting said support arm for pivotal movement about a vertical axis wherein said end of said support arm for supporting said milking unit is movable from a rearward position to a forward position away from said milking unit, and includes means for supporting said support arm for pivotal movement about a horizontal axis.

12. The milking unit support and detacher mechanism set forth in claim 11 wherein said means for supporting said support arms includes means for biasing said end of said support arm forwardly when said end of said support arm is in said rearward position.

13. The milking unit support and detacher mechanism set forth in claim 8 wherein said means for supporting said milking unit support arm includes a bracket supported for pivotal movement about a horizontal axis, said support arm attached to said bracket and movable in an arcuate path from said first position to said second position during pivotal movement of said bracket about said horizontal axis.

14. The milking unit support and detacher mechanism set forth in claim 13 further including a lever arm having opposite ends, one of said lever arm ends attached to said bracket, and means attached to said flexible retracting member for engaging the other of said ends of said lever arm when said flexible retracting member is retracted and for pivoting said lever arm and said bracket so as to move said arm to said first position.

15. The milking unit support and detacher mechanism as set forth in claim 8 and wherein said means for supporting said milking unit support arm includes, a vertical shaft having a vertical axis, a first bracket supported by said vertical shaft for rotation about said vertical axis, a generally horizontal pivot shaft supported by said first bracket and having a generally horizontal axis, and a second bracket supported by said horizontal shaft for pivotal movement about said generally horizontal axis, and said milking unit support arm is attached to one of said brackets for movement about said vertical axis and said horizontal axis.

16. The milking unit support and detacher mechanism set forth in claim 15 and further including a lever arm having opposite ends, one of said lever arm ends attached to said second bracket, and means attached to said flexible member for engaging the other of the ends of the lever arm when said flexible member is retracted for pivoting said lever arm and said second bracket so as to move said arm to said first position.

17. The milking unit support and detacher apparatus set forth in claim 15 and wherein said means for supporting said support arm includes spring means for biasing said support arm toward said second position.

18. The milking unit support and detacher mechanism set forth in claim 8 wherein said means for pulling on said flexible retracting member includes a fluid motor having a vertically movable piston, and means for connecting said piston to said flexible retracting member.