US2636577A

US2636577A - Calking mechanism for holding mobile winching units

Info

Publication number: US2636577A
Application number: US144703A
Authority: US
Inventors: William F Niedenthal
Original assignee: Individual
Current assignee: Individual
Priority date: 1950-02-17
Filing date: 1950-02-17
Publication date: 1953-04-28
Anticipated expiration: 1970-04-28

Description

April 28, 1953 f w F NIEDENTHAL 2,636,577 CALKING MECHANISM FOR HOLDING MOBILE WINCHING UNITS Filed Feb. 17, 1950 ilz'fijviedenzkaz INVENTOR I I I ATTORNEYS Patented Apr. 28, 1953 UNITED STATES PATENT OFFICE CALKING MECHANISM FOR HOLDING MOBILE WINCHING UNITS 1 Claim.

This invention relates to a mechanical calking or chock mechanism designed primarily for holding mobile winching units while winching operations are being performed.

An important object of the invention is to provide a calking or chock unit which is hingedly connected to the frame of the winching unit in such a manner that it will automatically release when the winching unit is moved forwardly, opposite to the direction in which the calking unit is held, thereby securely holding the mobile winching unit against slipping backwardly on ice or snow, or under the weight of the vehicle or device on which the winching operations are being performed.

With the foregoing and other objects in view which will appear as the description proceeds, the invention consists of certain novel details of construction and combinations of parts hereinafter more fully described and pointed out in the claim, it being understood that changes may be made in the construction and arrangement of parts without departing from the spirit of the invention as claimed.

Referring to the drawing Figure 1 is a perspective view illustrating the rear end of the chassis of a mobile winching unit, with the calking attachment mounted thereon.

Fig. 2 is a perspective view taken from the forward side of the calking mechanism.

Referring to the drawing in detail, the reference character 5 indicates the side rails of the chassis of a mobile winching unit, the side rails 5 being connected at their rear ends, by means of the cross bar 6.

Bolted to the outer surfaces of the side rails 5, are supporting arms I to which the side bars 8 of the calking or checking mechanism are pivotally connected, as by means of the bolts 9.

The free ends of the side bars 8 are welded to the I beam l0 and the connection. between the bars 8 and I beam l 0, is braced by means of the brace bars II that are shown as welded to the side bars 8 and I beam ID. 1

Transverse bars l2 connect with the side bars 8, and are held in parallel spaced relation with respect to each other, the bars 12 being connected intermediate their ends by means of the bar [3 which is welded thereto, while the angularly disposed bars 14, connect the bars l2 bracing them against movement with respect to each other.

Formed on the lower outer edge of the lower flange l5 of the beam 10, are calks I6 which are adapted to dig into the ground surface when the apparatus is lowered to calk the winch unit with which it is connected, during winching operations, the construction of the beam l0 and supporting mechanism being such that when the free end of the apparatus is lowered to the ground, the frame approximately parallels the average direction of pull of the winching unit. It will also be noted that the calking unit is mounted so that it releases automatically when the winching unit is moved forwardly, opposite to the direction in which it is held, and catches and holds against any backward movement of the unit, thereby preventing slipping of the mobile winching unit, during winching operations.

Mounted on the upper surfaces of the side rails 5, are bearings 11, in which the shaft I8 operates, there being a pawl and ratchet mechanism I9 for controlling rotation of the shaft l8.

Wound on the shaft I8, is the flexible cable 20 which also connects with the beam H! by its passing through an opening formed intermediate the ends of the beam 10, the portion of the flexible cable being then secured adjacent to the opening.

On one end of the shaft is an operating handle 2! by means of which the shaft [8 may be rotated to wind the cable 20 thereon elevating the beam Hi to its inactive position, or the handle may be operated to allow the cable to unwind in lowering the beam [0 to its active or calking position.

From the foregoing it will be seen that due to the construction shown and described, I have provided a calking mechanism for use in connection with mobile winching units, which may be readily lowered into contact with the ground surface, preventing movement of the mobile winching unit while winching operations are being performed.

Having thus described the invention, what is claimed is:

A calking device adapted to be attached to the rear ends of the side rails of mobile winching units comprising a frame including downwardly inclined supporting arms adapted to be secured to a winching unit at opposite sides thereof, side bars pivotally connected with the supporting arms at the free ends thereof, said side bars extending rearwardly from the supporting arms. a transversely disposed I-beam to which said side bars are welded, bars welded to the upper surface of the I-beam and side bars, cross bars connecting the sidebars of the frame, spaced calks extending from the I-beam adapted to dig into the ground surface calking the winching unit, an operating shaft mounted on the side rails of the winching unit, a cable connected with said I-beam and wound on said shaft, said cable effecting adjustment of said I-beam vertically, and means for operating said shaft.

WILLIAM F. NIEDENTHAL.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,719,313 Scott July 2, 1929 FOREIGN PATENTS Number Country Date 314,643 Great Britain July 4, 1929 316,963 Great Britain "Aug. 7, 1929