US332687A - Bbadshaw - Google Patents

Description

(No Model.)

A. WEEDEN.

POST DRIVER. No. 332,687. Patented Dec. 15, 1885.

zfl

B a L Q |||t f 6g '1 a my {Q Q, "'I

II *T a H 4 d I] Z31,

I a 62 I"@ F (l n o D *l J 6 E A j 14,

, Pa Z & & Mlrzeuw. [live/Z601 NITED STATES ALFRED \VEEDEN, OF BON, WISCONSIN, ASSIGNOR OE ONE-HALE TO J. \V. BRADSHAYV, OF SAME PLACE.

POST-DRIVER.

SPECIFICATION forming part of Letters Patent No. 332,687, dated December 15, 1885.

(No model.)

To all whom it may concern:

' Be it known that I, ALFRED \VEEDEN, of

Bon, in the county of Richlaud and State of \Visconsin, have invented an Improved Post- Driver, of which the following is a specification.

The special object of the invention is to com bine certain instrumentalities with a wagonframe in such a way that posts may be driven [0 into the ground at the desired distance apart, while the mechanism may be conveniently and expeditiously moved from place to place.

The invention will first be described in connection with the drawings, and then pointed out in the claims.

Figure l of the drawings is a plan view.-

Fig. 2 is a longitudinal vertical section.

In the drawings, A represents an ordinary wagon-frame, except that I preferably make the beams a a converge toward the front, so

as to bring the uprights of rack B more compactly together, to better support the weight of hammer C. The rack 13 is pivoted at b b to the bearingblocks a a on the frame, and is provided at the top with a cap-plate, I). Be-

tween two uprights on this cap is journaled a pulley, I), over which passes a band, d, detachably, so that the hammer rope, chain, or other flexible connection, E, may not escape from the pulley.

F F are braces, which have longitudinal slotsff at the lower end, while they are pivoted at the upper to the side bars, 1) V, of the rack.

ff are clamp-screws, which pass through slotsff with their shanks, and into the sides of frame A. By loosening the clamp-screws the braces may he slid so as to support the rack at a greater or less forward projection or in a perpendicular plane.

The hammer O is provided on each side with a groove, 0, which fits loosely over the guides b b of rack, and thus causes the hammer in its fall to strike exactly where it is intended.

5 The flexible connection E is made fast to the hammer, passed over rack-pulley D, carried under a pulley, G, journaled in uprights g 9, near front of frame, and then made fast to a pulley, H, on the Windlass I. On the latter I preferably use diametrically-opposite crankhandles z" i, so that two strong men may wind up the heavy hammer. The pulley H is made to slide loosely on the windlass or shaft I, and carries on one side a half-clutch, h,which con nects with the fast clutch h on Windlass.

Then it is desired to wind up the hammer, a workman operates the hand-lever J, rod K, and bifurcated horizontal lever L, so as to lock the half-clutches h h to one another, and incidentally to the Windlass. On the other hand, as soon as the hammer has reached its intended height, a reverse movement of lever J disconnects the pulley H from the Windlassclutch, allows it to turn, and the hammer falls on the top or head of post.

I may use a ratchet-wheel and pawl on the Windlass and frame, so that the Windlass can never turn backward and the hammer can never fall until the pulley His unclutched from the shaft or Windlass.

I am aware that it is not new to raise the hammer or ram by means of rack, pulleys, and Windlass, or to use ahorizontally-movable lever to disconnect the two parts of a clutch, or to connect'such alever with a pullrod, or to shift the braces by an arc-slot slightly, so as to allow for the inclination of the ground; but what I have done is to regulate the distance of the fall of the hammer, and thus graduate its blow to the softness or hardness of the ground. This has been found by me to be necessary to prevent a post from being driven too far into the ground. This I accomplish by pivoting my braces to the rack and clamping them adjustably to the frame by means of long straight slots.

Another thing which Iaocomplish is to com bine the trip with the Windlass mechanism, so that one man can both raise and trip the hammer. This is done by connecting ahandlever with an ordinary clutchlever, and arranging said hand-lever in such local relation with the hand-crank of Windlass-shaft that the hand-crank will be within easy reach of one hand, while the hand-lever will be within convenient reach of the other hand.

As the wagon straddles the line of fence, one man is sufficient to work the post-driver and drive up his team from point to point, while another sets up the posts in position to be driven.

lVhat I claim as new, and desire to protect by Letters Patent, is-

1. In post-drivers, the two braces for the ver, and placed in such'local relation to the hand-crank on Windlass that a man working [0 'the Windlass may also work the trip mechanism, as described.

ALFRED WEEDEN. Witnesses:

MINNIE SATTERLEE, J. W. BRADSHAW.

Images