Draw works

• US 4,488,708 A
• Filed: 09/01/1982
• Issued: 12/18/1984
• Est. Priority Date: 09/01/1982
• Status: Expired due to Fees

• Current Assignee: James A. Frye
• Original Assignee: James A. Frye
• Inventors: Frye, James A.
• Primary Examiner(s): TAYLOR, BILLY
• Application Number:
  US06/413,709
• Time in Patent Office: 839 Days
• Field of Search: 254/293, 254/294, 254/295, 254/339, 254/340, 254/355, 254/358, 254/DIG. 901
• US Class Current: 254/355
• CPC Class Codes: B66D 1/16 the drums or barrels being freely rotatable , e.g. having a clutch activated independently of a brake B66D1/20, B66D1/22, B66D1/24 take precedence; clutches activated alternately with brakes B66D1/14, slip couplings B66D1/14
• CPC Class Codes: F16D 25/046 and causing purely radial movement
• CPC Class Codes: Y10S 254/901 Antifriction means for cable pulling drum

Abstract

A draw works comprises a drum shaft which is supported off a base at spaced locations by four bearings. Each of the locations is adjacent a support side plate connected to support members of the base. The support members extend transversely to the drum shaft. Two of the support side plates are located on one side of a drum associated with the drum shaft, and two other support side plates are associated with the drum shaft on the other side of the drum. Disposed between the first two support side plates on one side of the drum is a mechanism for receiving a first power input, and disposed between the second two support side plates is another mechanism for receiving a second power input. Transmission mechanisms for coupling the power inputs to the drum shaft are also disclosed.

Claims

1. A draw works, comprising:

a base;

a drum shaft;

a drum associated with said drum shaft;

first support means for supporting said drum shaft off of said base at first and second spaced locations along a first section of said drum shaft extending from a first end of said drum, said first support means including;

a first side plate supported by said base;

a second side plate, spaced from said first side plate, supported by said base;

a first bearing housing connected to said first side plate;

a second bearing housing connected to said second side plate;

a first bearing retained on said drum shaft in rotative and drum-shaft-supportive relationship with said first bearing housing; and

a second bearing associated with said drum shaft in rotative and drum-shaft-supportive relationship with said second bearing housing;

second support means for supporting said drum shaft off of said base at third and fourth locations along a second section of said drum shaft extending from a second end of said drum, said second support means including;

a third side plate supported by said base;

a fourth side plate, spaced from said third side plate, supported by said base;

a third bearing housing connected to said third side plate;

a fourth bearing housing connected to said fourth side plate;

a third bearing retained on said drum shaft in rotative and drum-shaft-supportive relationship with said third bearing housing; and

a fourth bearing associated with said drum shaft in rotative and drum-shaft-supportive relationship with said fourth bearing housing;

said base including a plurality of support members extending transversely to said drum shaft and having said first, second, third and fourth side plates connected thereto;

first power input means, disposed between said first and second side plates, for receiving a first power input to rotate said drum shaft; and

second power input means, disposed between said third and fourth side plates, for receiving a second power input to rotate said drum shaft.

2. An apparatus as defined in claim 1, further comprising:

first power transmission means, including;

a first clutch assembly; and

first drive adapter means for connecting said first power input means to said first clutch assembly, said first drive adapter means having said second bearing retained thereon; and

second power transmission means, including;

a second clutch assembly; and

a second drive adapter means for connecting said second power input means to said second clutch assembly, said second drive adapter means having said fourth bearing retained thereon.

3. A draw works, comprising:

a base;

a drum shaft;

a drum associated with said drum shaft;

first support means for supporting said drum shaft off of said base at first and second spaced locations along a first section of said drum shaft extending from a first end of said drum;

second support means for supporting said drum shaft off of said base at third and fourth locations along a second section of said drum shaft extending from a second end of said drum;

said base including a plurality of support members extending transversely to said drum shaft and having said first and second support means connected thereto along joints also extending transversely to said drum shaft;

first power input means, disposed between said first and second spaced locations, for receiving a first power input; and

second power input means, disposed between said third and fourth spaced locations, for receiving a second power input.

4. A draw works, comprising:

a base;

a drum shaft;

a drum associated with said drum shaft;

first support means for supporting said drum shaft off of said base at first and second spaced locations along a first section of said drum shaft extending from a first end of said drum;

second support means for supporting said drum shaft off of said base at third and fourth locations along a second section of said drum shaft extending from a second end of said drum;

first power input means, disposed between said first and second spaced locations, for receiving a first power input; and

second power input means, disposed between said third and fourth spaced locations, for receiving a second power input.