US228798A

US228798A - Excavator

Info

Publication number: US228798A
Authority: US
Publication date: 1880-06-15
Anticipated expiration: 1897-06-15

Description

2 Sheets-Sheet 1.

Patented June 15,1880.

INVENTOR WITNESSES Z40 ATTORN EY u. PETERS. PNOTO-LITHOGRAPHER, WASHKNGTON. D c,

2 SheetsSheet 2.

L. ADAMS. Excavator.

No. 228,798. Patented June15,l880.

WITNESSES I INVENTOR UNITED STATES PATENT OEEIcE.

LUTHER ADAMS, OF MATTOON, ILLINOIS.

EXCAVATOR.

SPECIFICATION forming part of Letters Patent No. 228,798, dated June 15, 1880.

Application filed December 15, 1879.

To all whom "it may concern.-

Be it known that I, LUTHER ADAMS, of Mattoon, in the county of (loles and State of Illinois, have invented a new and valuable Improvement in Ditching-Machines and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference beinghad to the annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon.

Figure 1 of the drawings isa representation of a longitudinal vertical section of this invention. Fig. 2 is a transverse section of the same, and Fig. 3 is a top view.

This invention consists in the construction and novel arrangement of the double-flanged cutting-wheel, the stationary rear scoop-guide fixed to the frame, the upper front shovel extending between the flanges of the wheel, the inclined aprons arranged laterally and in front of the wheel on the frame, in combination with the adjustable kingbolt and caster stem, whereby the frame is raised and lowered, all as hereinafter shown and described.

- In the accompanying drawings, the letter A designates the main bar or frame of the machine, slotted at B for the cutting-wheel U, which consists of a body portion, a, and two flange-cutters, D, which are of larger diameter than the body portion, to which they are connected by screws, bolts, or otherwise. This wheel is journaled in bearings b on the under side of the longitudinal frame A at about its middle portion, as shown in the drawings. The thickness of the wheel between the outside faces of the flanges should be equal to the width of the ditch to be out, and the wheel should have a diameter equal to or greater than twice the depth of said ditch.

E designates the rear scoop-guide, which is semicircular in form, corresponding to the contour of the rear flanges of the wheel, between which it is located, being rigidly connected to the frame A by means of its back flange or fin, c, which is seated in a squared notch, d, in rear of the main-wheel slot, and secured therein by means of pins or bolts 6 passing transversely in the frame through said fin. This guide E is made strong, and is designed to support at its lower end a steel cutter, g,

of the same width as the guide, said cutter being riveted on its lower end and located between the margins of the wheel-flanges at their lower portions. This cutter serves to shear the earth out between the rolling side cutters, whence it is carried up by the semicircular scoop-guide E and the revolving wheel to the top of the latter, where it is taken out by a horizontal blade, F, which is attached to a seat, h, on the frame in front, and extends back between the flanges to the body portion of the wheel, as shown in the drawings.

Gr represents the front angular apron, and H the inclined sides or discharging-wings, which extend downward and outward from the angular ridge f in front of the wheel. These inclined wings H also extend along each side of the wheel past its middle portion, being secured to raised supports on the frame, as indicated at k. A front stop-flange, I, serves to prevent the earth from being thrown in front of the apron into the ditch again as it comes from the wheel, so that it falls on the inclined wings and is discharged on each side clear of the ditch.

J represents a plate, which is fastened to the under side of the front end of the frame, and extends forward sufficiently to connect with the lower end of a long king-bolt, K, which passes upward through the axle and through the upper end of a strong metallic brace, L, which is also secured to the front end of the frame, and extends upward to the upper end of the king-bolt, which should be at least as long as half the diameter of the main or body portion of the cutting-wheel. The front of the frame is supported by the wheels M and the axle N, which should be, at the point where the kin g-bolt K passes through it, as thick as the flanges are deep from the body portion of the wheel to their cutting-edges. The length of the kin g-bolt should embrace so many thicknesses of the axle, which,as stated, measures the depth of the cutting-flanges, and pins m, passing through holes a in said kingbolt, serve to flx it on the axle in its position when adjusted, said axle, in making the first cut, resting on the plate J at the lower end of the king-bolt, which is lowered step by step in making the succeeding deeper cuts. The

axle N should be long enough to allow the wheels M to pass outside of the earth discharged from the apron, and the double-tree should also be long enough to allow the horses to walk outside of this loose earth.

P represents a caster-wheel jonrnaled in the jaws 19 of a swivel-stem, S, which passes upward through a seat, 8, in the rear end of the frame, in which said stem has a sliding movement as well as one of rotation. To the upper end of the stem is pivoted a lever or handle, B, having a link or chain connection, 2, with the end of the frame A, as shown, and serving to enable the operator to guidethe rear of the frame and to effect a cut of less depth than a full cut, the latter being governed by the adjustments on the king-bolt. As the caster-wheel runs in the ditch, it need not interfere with the depth of the cut of the ditching-wheel, which is designed to effect by its successive actions a cut equal to half its diameter. The caster-wheel also serves to raise the ditching-wheel clear of the ground in passing from one ditch to another, or in carrying the machine to or from its place of deposit.

Having described this invention, what I claim, and desire to secure by Letters Patent, 1s

1. The combination, with the front supporting-axle and its long adjusting kingbolt K, having stops or pins m, of the adjustable frame A, carrying the double-flanged ditching-Wheel G, and its plate-connection J and brace L,-

substantially as specified.

2. The combination, with the ditching mechanism, consisting of the main slotted frame carrying the double-flanged ditching-wheel 0, its rear scoop-guide, E, clearing-blade F, and discharging-apron G, of the front supporting wheels and axle M N, the rear caster-wheel, P, and the adjustable king-bolt K in front and caster-stem S in rear, substantially as specified.

In testimony thatI claim the above I have hereunto subscribed my name in the presence of two witnesses.

LUTHER ADAMS. Witnesses:

JOHN MAYER, John O. PARMELEE.