US102921A - Improvement in s a wing-machines - Google Patents

Description

pivoted to itsframe, andthe lat [Maliens DEAN, `or` FoXnonoUcH, MASSACHUSETTS. d

l' g LcttcrsPatcnt N .102,921, dated May 10, i870.

l `nvnuzovInnern* 1N sAWrNG-Macnmns.

s llhe Schedule referred to in these Letters Patent and making part of the same t `Be itwknown -that I, `MARCUS E; DEAN, of Foxborough, in the county of Norfolk and State of Massachusetts, have invented cer-tain Improvements in `Machines forSawing rGutting-down Trees, of which the following is al full, clear, and exact description, `reference lbeing had `tothe accompanying drawings making part of this specificatiomfin whichl Figure l vis a perspective view of`my improved mac une;l l

Figure 2 is a transversenection through the center` of the same. l o i My invention has foiits object to provide asimple, efcient, and durable; machine for cutting or. sawing- `down standing timber, which may be operated and moved-from place to place by one individual only;

and

4 moved by a `connecting-rod longitudinally, in or upon guides, over an independent lower frame secured by o screw-pins orotherwise to the trunkof the tree to be o felled, the powerA for moving 'the saw longitudinally heilig cpplied byhaudfto a crank, which `iy ordriving-wheel, which also serves as a meausby which the machine may be easily transported from place to place, the same power transmitted through a series of gear-shaftsrworms, and screws, being', also lemployed for feeding the saw transversely into and through the tree.` 'Y

` o "lo enable others `skilled inl the art .to understand and use my invention, Ilwill proceed todescribe the manner in which I have carried it out.

In the said`drawings l f f A" the frame-work'ofthe machine,.composed of a stationary portion, A', secured to the tree, and a movable portion, A", sliding upon the former.

o In bearingsa, in the latter y or movable portion, is placed the driving or fly-wheel B, to the crank of `which is attached one end of a connecting-rod, C, to

the other end ofwhichis secured a frame, D, in which ishung a saw, E, the ends of the saw being loosely ter being. supported in or upon guides, c c d, above the frame-.work-A,

so thtthe saw-frame D may move without friction overit. l r .y 3 s The guides c caresmall cir ular rods 'which pass vthrough small eye korting-bolts, `5V 5, screwed into the opposite endsofthe-saw-frame D, which is thus free to slide in a longitudinal direction by the throw of the connecting-rod without coming` in contact with the framefworkAbeueath s v i The guide d projects out from the'back of the sa'wf `frame and restsin `a groove, e, formed-in the rear bar G of the movable portiouof the frame-work-t My invention consists in a saw attached to aframe operates a The power for moving the saw longitudinally is also employed to feedit transversely up t'o and through the .trunk ofthe tree, being transmitted in the` following manner;

0n one extremity of the axis of the iiywheel is secured a pinion, f, into which mesh `the teeth of a cog-wheel, g, provided with a crank, 6, for applying the hand of the voperator thereto.

H is another cogwheel secured to one end of a short horizontal shaft, I, and driven by the pinion jl At the opposite-end of the shaft I is secureda bevel-wheel, K, which meshes into a bevel-pinion, L,

` on one end of a horizontal shaft, M, extending Iongi tudinally at the back of the movable portion A of the frame-work A, and at right angles with the shaft I.

Secured to the shaft M are two worm-gears, It 11,

which revolve two small pinions, i t', on theJ ends ot' two screw-shafts, k la, which turn in bearings attached to the movable portion of the frame-work and pass Vinto two projections, l l, provided with female screws.

and secured to the stationary portion A' ofthe' framework A.

The projections l l are made in two pieces,7 8, one, 8, of which is slotted at its base for the reception ol' a screw, 9, which may be loosened so that the pieces 7 8 may be separated from each other to allow of the Withdrawal of the movable portion of the frame-Work and the saw and frame attached thereto, without the delay which would occur were the feed-mechanism turned back by power appledto the crank.

"m. m are two screw-pegs or pins passing through the stationary portion A of the frame-work A, at or near one of its ends, anda is another screw-pin orA pegpassing through the opposite end of the framework A', the purpose of the said pins or pegs beingV to support the frame-workwith the fly/-wheel and other mechanism in place upon the trunk of the tree to be felled, so that the ily-wheel may revolve without touching the ground.

The two pins mlm nearest the fly-wheel are slightly inclined downward from the horizontal, and the piu` n is slightly inclined up therefrom when they enter the tree, so that the weight of'the machine may be supported withoutthe liability of settling down after the cut is commenced. These pins are operated by a bar'tting into vholes in their heads, 10, in a wellknown manner. i

It, will be seen from the foregoing construction that one individual only is suiiicieutto operate the machine, the hand-power applied to the crank net ,only

causing the longitudinal, movement or strokeof th'e Saw, but also carrying up theV movable portion' of the.

'mi eine.

frame-work with the iiy-wheel and the feed-mechanism, and operating the feed,- by which it is carried' transversely into and through the tree, as required.

The ily-wheel equalizes the motion and carries the saw in both directions without binding, and at the sume time affords a ready means by which the oper ator may more the machine from place to placet In cutting down timber of different densities, such ns pine or other soft woods, and oak or other hard woods, it is necessary to provide a means whereby the degree or amount of the feed of the saw into the trunk may be readily changed, as required. This I am enabled to do by providing a series of bevel-gears of different diameters, and substitutingr them for those K L on the shafts I M.

If, 'from any cause, (for instance, the occurrence of numerous knots,) the feed is required to be irregular, the bevel-pinion may be disconnected from the bevelwheel and the feed he operated by hand.

As an additional security for holding the machine Claim.

What I claim as my invention, and desire toseeure by Letters Patent, is-

The frame-work A, saw E, and frame D, in combination with the fly-wheel B, connecting-rod C,

shafts I M, gear f g H KL, worms h h, and screwshafts k k, with their gear i t', constructed and operat ing substantially as and for the purpose described.

MARCUS E. DEAN.

Witnesses z N. W. S'rEABNs', W. J. CAMBRIDGE.

Images