US1590192A - Excavator - Google Patents

Description

A. M. HOOD June 29 1926.

EXCAVATOR Filed Jan. 8. 1925 Patented June 29, 192%..

ARTHUR noon, on INDIANAPOLIS, INDIANA.

nxcAvAron.

App1ication filed January The object of my invention is to produce an excavator oil the dipper type in which the digging swing and forward crowd is accomplished by a single cable and the re- 5 turn lift and resistance to forward crowd is accomplished by an independent coordinated means. I

The accompanying drawing illustrates my invention, said drawing being a side elevation, largely diagranmia-tic in character, of an embodiment of my invention.

In the drawing indicates a suitable supporting structure, .as for instance, a truck which may be motorized, the truck :being provided with a .turn table 11, an anchorage mast 12 and a motor 13 equipped with two winding drums 14 and 15, all being of common construction and the axis of the turn table 11 being vertically beneath the upperend of the anchorage mast 12. The above described construction may be of any ordinary well known character.

Supported upon turn table 11 is an upwardly and outwardly extended boom 16 supported at a desired inclination from the upper end-of mast 12 by a stretcher bar 17 and suspension cables 18. Mounted at the outer end of boom 16 is a sheave shaft 20 upon which are journaled two sheaves 21 and 22, which, for convenience of illustration, are shown in the drawing as of slightly different diameter, although in "actual practice they are most conveniently 0t the same diameter.

Boom 16 is conveniently formed of two parallel laterally spaced channels so that the sheaves 21 and 22 may lie between the channels as indicated.

Journaled upon shaft 20 is a swinging yoke 23 which formsa guide for a dipper handle 2d which is conveniently made of two parallel spaced channels, one lying upon each side of the sheaves 21 and 22 and lying between the channels of boom 16, the arrangement being such that the dipper handle 2 1 is freely slidable in yoke 23 and isswingable about shaft 20 as an axis. The outer end of the dipper handle 24 carries a dipper 25 of any well known form and the details of which form no part of my present invention.

The upward retracting movement of the dipper handle is accomplished by a pull back cable 26 in the present instance anchored to the outer end of the dipper han- .8, 1925. Serial No. 1,137.

dle. Of course it will be understood that cable may be associated with the dipper handle 24 in any desired manner so that a pull on the cable will serve to shift the dipper handle longitudinally inwardly. Cable 26 passes over a sheave 2"! journaled on boom 16, over a sheave 28 jourualed at the lower end of the boom 16, thence down through table 11 at its axis and around sheave 29 to the winding drum 1%.

For the purpose of swinging the dipper 25 upwardly and also crowding the dipper handle outwardly I provide a cable 30, which is attached at its outer end to the upper inner end of the .dipper handle, passes thence rearwa-rd'ly around a sheave 31 at the lower end of the boom, thence forwardly around the sheave 22, thence up to and around a sheave 32 on the inner end of the dipper handle, thence down and around sheave 21, thence back to a sheave 33, co-axial with sheaves 28 and 31, thence down through table 11 and around a sheave 34L .CO-fLXlfll with sheave 29 and thence to the winding drum 15.

It will, of course, be understood thatthe winding drums 1 1 and 15 will be provided with suitable controlling members by which they maybe independently orsimultaneously controlled in their movements in either di- .rection.

In operation a pull .upon cable 30'by drum 15 will exert an outward thrust upon the dipper handle through the medium of the bight of the cable passing around sheave 32 and will also exert a swing-in g force upon the dipper handle through the medium of the outer end of the cable and its attachment through the upper inner end of the dipper handle. A combined swing and outward thrust may be accomplished by a gradual release of the cable 26 and outward thrusting movement may be eliminated by hanging on to cable 26 by braking drum 1st.

I'elaim as my invention:

1. In an excavator, a boom, a dipper handle swingably and slidably mo mted on said boom, a thrust-in and lifting cable attached to the inner end of said handle and passed from thence around a sheave at the inner end of the boom, thence around a sheave further out on the boom, thence around asheave at the inner end of the handle, thence around a second sheave on the boom, and thence to a winding drum,

the boom, and thence to a winding drum,

and a second cable supported by the boom and engaging the dipper handle to resist outward crowd and to retract the handle longitudinally.

3. In an excavator, a handled dipper, a support on which said handle is swingably and slidably mounted, a main hoisting and crowding cable associated with the support and with the inner end of the handle to both swing and crowd it longitudinally in one direction, and means for resisting said crowding movement, said means comprising 7 a second cable attached to the outer end of the handle.

. 4:. In an excavator, a handled dipper, a support on which said handle is swingably and slidably mounted, a main hoisting and crowding cable associated with the support and with the inner end of the handle to both swing and crowd it longitudinally in one direction, and means for resisting said crowding movement.

5. In an excavator, a handled dipper, a support on which said handle is swingably andslidably mounted, a main swinging and crowding cable associated with the support and having a bight in end thrust engagement with one end of the handle for crowding it in one direction and another portion in swinging engagement with the same end of the handle, and means for resisting said crowding action, said means including a cable attached to the other end of the handle.

6. In an excavator, a handled dipper, a support on which said handle is swingably and slidably mounted, a main swinging and crowding cable associated with the support and having a bight in end thrust engagement with one end of the handle for crowding it in one direction and another portion in swinging engagement with the same end of the handle, and means for resisting said crowding action.

7. In an excavator, a handled dipper, a support on which said handle is swingably and slidably mounted, a main swinging and crowding cable associated with the support and having a bight in end thrust engagement with the inner end of the handle for crowding it outwardly and another portion in swinging engagement with the inner end of the handle and means for resisting said outward crowd, said means including a cable attached to the outer end of the handle.

8. In an excavator, a handled dipper, a. support on which said handle is swingably and slidably mounted, a main swinging and crowding cable associated with the support and having a bight in end thrust engagement with the inner end of the handle.

9. In an excavator, a handled dipper, a support on which said dipper is swingably and slidably mounted, a main swinging and crowding cable associated with said support and having one portion in crowding association with one end of the handle and another portion in swinging engagement with the same end of the handle, and means for resisting said crowding, said means including a cable attached to the opposite end of the handle.

10. In an excavator, a handled dipper, a support on which said dipper is swingably and slidably mounted, a main swinging and crowding cable associated with said support and having one portion in crowding association with one end of the'handle and another portion in swinging engagement with the same end of the handle, and means for resisting said crowding.

11. In an excavator, a handled dipper, a support on which said dipper is swingably and slidably mounted, a main swinging and crowding cable associated with said support and having one portion in crowding association with the inner end of the handle and another portion in swinging engagement with the inner portion of the handle, and means for resisting said crowding, said means including a cable attached to the outer end of the handle.

12. In an excavator, a handled dipper, a support on which said dipper is swingably and slidably mounted, a main swinging and crowding cable associated with said support and having one portion in crowding association with the inner end of the handle and another portion in swinging engagement with the inner portion of the handle, and means for resisting said crowding.

In witness'whereof, I have hereunto set my hand at Indianapolis, Indiana, this 6th dayof January, A. D. one thousand nine hundred and twenty five.

ARTHUR M. HOOD.

Images