US1385543A - Derrick or excavating-machine - Google Patents

Description

I. A. HARMAN.

DERRICK 0R EXCAVATIN-G MACHINE.

APPLICATION FILED SEPT I2. 19I9.

Patented July 26, 1921.

4 SHEETS-SHEET l.

I l I I I I I Y l l I l I I l I l i I I/ A mf/WY J. A. HARMAN.

nEnmcK 0R ExcAvATING MACHINE.

APPLICATION FILED SEPT 12,1919.

yI. A. HARMAN.

DERRICK 0R EXCAVATING MACHINE.

APPLICATION FILED SEPT 12,1919.

1,385,543. Patented July 26, 1921.

4 SHEETS-SHEET 3.

/N VEN TOR J. A. HARMAN.

DERRICK 0R EXCAVATING MACHINE.

v APPLICATION FILED SEPT I2, I9I9| 1,385,543. Patented July 26, 1921.

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@wnrk UNITED` STATES j PATENT oFFlcE.

JACOB A. HARMAN, 0F PIEIORIA7 ILLINOIS.

DERRICK OR EXCAVATING-MACHINE.'

.Specification of Letters Patent. Patented Jllly 265 1921.

Application filed September 12., 1919. SerialNo. 323,330.

To all 'whom it may concern;

` Be it known that I, JAoonA. HARMAN, a citizen of the United States, a resident of Peoria, in the county of Peoria vand State of Illinois, have invented new and useful Improvements in Derricks or'Fixcavating- Machines, of which the following is a speciiication.

vThis invention has yreference to derricks or excavators, and relates particularly to that type mounted on a traveling frame or platform and intended to lbe used in excavating and moving earth or other material,

such as in the constructionV or cleaning out of drainage'ditches and the construction of railroad,"levee or'other embankments.

. In the use of derricks of the type referred to, it is necessary from time to time to clean out or deepen agricultural drainage ditches, and so far as I am aware, there is no satisfactory and economical method of supporting and moving forwardly 'along such ditches, the machines which are used therefor.

One of the common methods employed for this work, is to place a steam shovel or a drag line type of dredge, centrally located, upon beams long enough to span the ditch, and rest upon wheels or rollers. Few of these ditches are less than thirty feet wide and many of them are fifty or more feet wide on top, so that the structure necessary to carry the dredging machinery, located and working over the center of the ditch, is necessarily very heavy and expensive to provide and operate. All excavators of this must be at a maximum, vbecause the load is centrally placed between the supports. Y

My invention has for its vprincipal object, to place the revolving Vor swinging portion of the Aderrick or excavator-nearer to one of4 A furtherobject vof the invention is to provide a three point suspension for the derrick or excavator.

A further objectV of the invention is yto provide supporting beams for the derrick, which span the ditch, of a character which will allow 4one end of the frame to be higher vthan the other, while at thesame time the hoist house and equipment controlling the boom and bucket may remain 'level.

And a still further object of the invention is te provide a supporting beam or frame which is extensible, whereby `to adapt the frame to different width ditches.

That 'the invention maybe more fully understood, reference is had to the accompanying drawings, forming apartof the description, in which:

Figure l is a side elevation of a derrick or excavator embodying my' invention, the same shown when at work cleaning out or ldeepening a drainagel ditch;

Fig. 2 is a view similarto Fig. 1, except thatthe supporting beam or 'frameis shown constructed in a manner which will allow one end to be at a higher point than the tended to adapt it to ditches 'of different widths, and f Fig. 4L is a plan view of the derrick or excavator, illustrating the ythree point suspension; v l

F'g. 5 shows a conventional form of caterpillar for the truck, applied to the truck ysupporting the "hoist house,]and

Fig. 6 is 1an 1elevation of the structure shown inl Fig. '5, the caterpillar shown on the-berm' surfaces, displacing 'the track and `wheels shown in the preceding figures.

Like lcharacters of reference denote corresponding parts throughout the figures.

As showingthe application and use of the derrick orexcavator, I have illustrated by cross-section andv in plan, a ditch A banked by the berm-surfaces B. Y

On each of the berm surfaces are laid the -ties C andthe rails'D.

The derrick -or 'excavating equipment yproper is not unlike that now in common use, z. e. comprising the usual hoist-house l, mounted to revolve on theusual and well known bull-wheel or turn-table 2. Connected Vwith the hoist-house, that its outerend may be raised and lowered, is the boom 3. The cables 4 are provided for this purpose. 5 denotes the excavating bucket to which is connected a cable 6, whereby it may be controlled at suitable points, and 7 is the cable controlling the loadingr 'and trip of said bucket.

The supporting frame for the derrick or excavator, comprises preferably `thecrossbeam `8, Fig. 1, or the cross-beams 8 and 9, Figs. 2, 3 and 4. In Fig. 1, the beam 8 is a single beam adapted to span a given width ditch. In Figs. 2, 3 and 4, the beams 8 and 9 make it possible, as will be explained, to adapt the opposite ends of the beams to different levels and to extend the supporting frame so as to adapt the same to differ- Y ent width ditches.

In Fig. 2, the -forward extension 9 of the beam 8 has its forward end raised at an elevation above the forward end of the beam 8. This may beaccomplished in several. different ways, but as a simple and inexpensive expedient, the rear end of the beam 9 may be bolted at 10 to beam 8, inclined forwardly and supported in this position by the upright 11, bolted to the end of the beam Y v8 and the body of the beam 9.

In Fig. 3, thevbeams 8 and 9 areshown constructed in a manner allowing the beams 49 to beextended to a position to adaptthe supporting frame to different width ditches. This may be accomplished in several different 'ways, but as a simple and inexpensive expedient, the two beams may be provided with a plurality of corresponding bolt lholes to Vreceive bolts 12. The full and dotted lines illustrate the different positions to which the frame maybe adjusted.

The outer ends of the beam or beams 8 and 9 are preferably connected to and supportedby the short truck 13, having wheels v 14 traveling on the rail D. This constitutes one of the points of Asuspension fortheder- The inner ends of the beam or beams 8 and V9 are preferably connected to one end of a truck 15, substantially longer than the opposite truck 13, for reasons which will become apparent.H This .truck also has wheels 16 traveling on the rail D. Connecting the forward end of the truck 15 and the` beam 8 intermediate its length, `is the angularly disposed bracing and supporting beam 417.

V'The end ofthe V,truck 15 to .which the beam 8 is connected, constitutes the second point of suspension, and its forward end to which the vbrace 17 is connected, constitutesthe third point ofsuspension.

In Figs. 5 and 6, I have shown a conventional form of ar caterpillar movable upon the berm surfaces of the ditch to take the place of the track and wheels previously referred to. This caterpillar is referred tov generally as 17, and while I have only shown the caterpillar in Fig. 5 as applied to truck 15, supporting the hoist house, it is I prefer that the revolving portion of the derrick orexcavator should be placed only a short distance from the center lineof the support 15, so that the strength of the beams carrying the load between the two supports 13 and 15, vwill be practically at a minimum.

My invention will permit the use of existing type of excavating machinery, and the machine vwill have the further advantage of being able to dig or clean out a very much wider ditch, and deposit the excavated l material at a greaterA distance from the ditch bank (see dotted line position of bucket, Fig. 1) becausethe revolving portion of the machine may be so located upon the travelving frame that it will be overV the edge of the ditch and can move the material the disi tance of the swing of the boom; or, when cleaning out an old ditch, can readily place the excavated material back of the spoilbank of the original excavation, as, already p,

pointed out.

What I claim is:

1. In a derrick or excavator, in combination, a pair of wheel supports, one longer than the other to provide a three `point suspension frame, a 'span for a ditch, comprisingl a beam connected to the short wheel support and one end of said longer wheel support, bracing and supporting means for said beam, and a revolving .derrick mounted,

on said span, off center or, eccentric to the width thereof, and vat a short distance from the center line of one. of said supports. S

2. In a derrick or excavator, 1n combination, a pair of supports, an extensible plat- Y form connecting said supports to provide an adjustable span for different width ditches, and a revolving derrick mounted onv said platform, off-center or eccentric to the width of lthe platform, and at a short distance Y,

from the center line` of one of said supports. i

3. vIn a derrick Lor excavator, a pair of wheel mounted supports adapted to travel on the berm surfaces of a ditch, a platform to span the ditch and connected to travel with said supports, a turn-table having a fixed location on said platformeccentric to the width thereof, and a short distance from the center line of oneof saidfsup'ports, and a 1lgllerrick revolubly mounted-'on said turnta e.- -Y i 4. In a derrck or excavator, in combina- Width of the platform, and at a short distion, a pair of supports, traction means contance from the center line of one of said nected With said supports to move on the supports. 10 berm surfaces of a ditch, a platform convIn Witness whereof, I have hereunto af- 5 necting said supports and designed to'span Xed my hand this 5th day of September,

a ditch, and a revolving derrick mounted on 1919. said platform, off-center or eccentric to the VJACOB A. HARMAN.

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