US380351A - Stump-extractor - Google Patents

Description

2 sheets-sheen;

(No Model.)

0, F. B. ROLA'PP.

STUMP EXTRAUTOR.

Patented Apr. 3, 1888.

N PETERS Phukwlrmvgrapncn wasmr muc (No Model. 2 Sheets-Sheet 2. I 0.'F. B. ROLAPP.

$TUMP EXTRAOTOR.

No. 880,351. v Patented Apr. 3, 1888.

UNTTED STATES PATENT @rrrc OTTO FREDERICK BERDHOLD ROLAPP, OF FULTON, KENTUCKY.

STUM P- EXTRACTOR.

SPECIFICATION forming part of Letters Patent No. 380,351, dated April 3, 1888.

Application filed November 8, 1887. Serial No. 251,609.

To ctZZ whom it may concern.-

Be it known that I, O'rro FREDERICK Bann- HOLD ROLALPP, a citizen of the United States, residing at Fulton, in the county of Fulton and State of Kentucky, have invented certain new and useful Improvements in Stump-Extractors; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertain's to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements in stump-extractors, and has forits object to simplify and otherwise improve in the construction and render more efficient in operation this class of devices.

To these ends and to such others as the invention may relate the same consists in the peculiar construction and in the novel combination, arrangement, and adaptation of parts, all as more fully hereinafter described, shown in the drawings, and then specifically defined in the claims.

In the accompanying drawings, Figure 1 is a plan view of a stump-extractor constructed in accordance with my invention. Fig. 2 isa vertical longitudinal section on linear m of Fig. 1. Fig. 3 is a vertical transverse section on line y y of Fig. 1. Fig. 4 is a transverse seclien on line of Fig. 1. Fig. 5 representsin detail the sections of the sliding box. Fig. 6 is transverse section of the same. Fig. 7 represents the details of the pivoted box.

Referring more particularly to the drawings, A represents the frame of the machine.

13 is the power-shaft provided at a point near its longitudinal center with aworm-gear, B and at its ends with cranks B This shaft is journaled within the adjustable j ournalboxes C C in the upper part of the frame. The construction and operation of these journals will be hereinafter more particularly described.

D is a central transverse shaft suitably journaled within the frame of the machine, and carrying a worm-wheel, D", adapted to mesh with the worm B upon the powershaft B.

(No model.)

E is a spool sleeved upon the shaft D, and provided at its ends with ratchet-wheels E F F are ratchet-wheels journaled upon the shaft D at the ends of the spool E.

Gis a pawl or latch pivoted to one of the cross-timbers of the frame and adapted to engage with suitable notches formed in the periphery of the ratchctwheel F, and G is a similar pawl pivoted to the outer face of the wheel Fand adapted to engage notches in the periphery of the drum E upon the spool E.

H H are transverse shafts suitablyjournaled within the frame of the machine, one upon either side of the same,as shown. These shafts are each provided at their inner ends with pinions H to engage the gear-wheel D and are provided at their outer ends, which project beyond the end of the machine, with suitable bearings for cranks.

The journal 0 of the power-shaft B, which is shown in detail in Fig. 7 of the drawings, is composed of the parts a, a, and a The lower section, a, is provided upon its under face with the downwardly extending rod or bolt a which passes through the timber K of the frame and serves as a pivot for the j ournal-box.

The journalbox C, which forms the bearing for the opposite end of the shaft B, the details of which are shown in Figs. 5 and 6, is constructed as follows: K represents the timber forming the upper part of the frame upon one of its sides. 12 is a metallic plate set into the upper face of the timber, and provided with a curved recess or groove, bflwhich is T-shaped in cross-section, as shown in Fig. 6. The

lower half of the journal-box b is provided upon its under surface with a T'shaped extension, If, adapted to enter the recess 11 in the plate I). The plate 0 is pivoted at its outer end to the upper face of the timber K at one side of the journal-box, and is formed upon the side adjacent to the box with a shoulder, 0', thus adapting it to securely engage the lower section of the journal-box and retain the same in place when turned inward. \Vhen for any reason it is desired to throw the worm B out of engagement with the gear-wheel D the section 0 is turned, so as to occupy the position shown in dotted lines in Fig. 1. The extension 6* is thus allowed to move within the recess or groove biand thepowershaft is thrown to one side, as will be readily understood.

In operation one end of the chain or rope L is secured to the spool E, and is passed through a series of pulleys, as shown at L L and L. A chain is passed around the stump to be extracted and the hook attached to the pulleyblock M is secured to the chain, the pulleyblock N being secured to the lower part of the frame, as shown. If the stump is a small one and but little power is required, the main power-shaft may be thrown out of gear and the power applied by means of a crank attached to one of the shafts H, or, if greater power is required, both the shaft B and the supplemental shafts H may be used. By releasing the pawl G from its engagement with the ratchet-wheel E the spool is allowed to turn freely upon the shaft D, and the chain may be run out independently of the operating mechanism of the machine.

While I have shown two so pplemental shafts, H, oneupon each side of the machine, and I prefer to use two, still I do not intend to limit myself to such construction, as it is evident that one of the shafts may be omitted, if desired, without departing from the spirit of my invention.

Having thus described my invention, what I claim to be new, and desire to secure by Letters Patent, is-

1. The combination, with the power-shaft B, of a shaft, D, arranged at right angles thereto and deriving motion therefrom, and a winding ratchet-wheel, E loose on said shaft D, a ratchet and pawl between said shaft D and ratchet-wheel E, and an independent ratchet and pawl between the shaft and the frame of the machine, substantially as and for the purpose described.

2. The combination, with the frame A, the shaft D, worm-wheel D, the shaft B, and worm B, of the spool E, loose on the shaft D and carrying the ratchet-wheel E the ratchetwheel F, fast on said shaft, and the pawl G on the frame engaging the ratchet-wheel F and engaging theratchet-wheel E, all substantially as described, and for the purpose specified.

3. The combination, with the frame and the plate b, fixedly attached thereto, and provided with curved recess b, T-shaped in cross-seetion, as described, of the sectional journal-box 0, provided upon its lower face with an eXten-

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