Trencher construction

• US 3,994,083 A
• Filed: 09/25/1974
• Issued: 11/30/1976
• Est. Priority Date: 09/25/1974
• Status: Expired due to Term

• Current Assignee: James E. Cunningham
• Original Assignee: James E. Cunningham
• Inventors: Cunningham, James E.
• Primary Examiner(s): Burr, Edgar S.
• Assistant Examiner(s): Bratlie, Steven A.
• Application Number:
  US05/509,099
• Time in Patent Office: 797 Days
• Field of Search: 37/80 R, 37/81, 37/85, 37/83, 37/91, 37/94, 37/92, 37/103, 37/95-97, 37/93, 37/82, 280/34 R, 280/34 A, 280/405 R, 280/80 R, 280/405 A, 280/80 B, 214/138 C, 214/142, 212/49
• US Class Current: 37/347
• CPC Class Codes: E02F 3/181 including a conveyor
• CPC Class Codes: E02F 3/20 with tools that only loosen the material , i.e. mill-type wheels
• CPC Class Codes: E02F 5/14 Component parts for trench excavators, e.g. indicating devices travelling gear chassis, supports, skids

Abstract

There is disclosed a trenching machine construction of vehicular type, having a wheeled chassis for travel movement with frames connected thereto, whereby trenching means supported by said frames are adjustable vertically, transversely and angularly with respect thereto, the weight of the means being shiftable longitudinally for such travel movement, means and power for effecting such adjustments being provided.

Claims

1. In a continuous digging trenching machine vehicle with a chassis unit having fixed, spaced traction means comprising forward and rearward wheels connected thereto for travel movement including forward and reverse directions, and steered by driving certain of said wheels the improvements which comprise:

a main frame connected to the chassis unit for longitudinal sliding movement with respect to said chassis unit by guide means provided thereon;

a mast assembly mounted on a secondary support member which is carried on the main frame, a mast connected by pivot means to the secondary support member for forward and rearward pivotal movement with respect to said secondary support member and means to mount said mast for angular displacement relative to said secondary support member;

means to slidably mount said secondary support member to said main frame for transverse movement with respect to the main frame over the rearward wheels;

trenching means mounted on said mast for vertical adjdustment thereon; and

separate, independent operable drive means connected to drive the chassis, and to operate the trenching means for trenching, adjust the trenching means on the mast assembly, pivot the said mast angularly, pivot said mast forwardly over the main frame, move the main frame on the chassis from a rearward position with respect to the traction means to perform digging operations to a forward position with respect to the traction means for travel movement of the vehicle, and to move said secondary support member transversely; and

power means for the drive means mounted on said main frame.