US85543A - Improvement in log-canting apparatus - Google Patents

Description

r r r tater game @Bffwat e- BENJAMIN STEVENS, OF GRAND RAPIDS, MICHIGAN. Letters PM No. 85,543, dated anuar 5, 1869.

IMPROVEMENT IN- LOG-GANTING APPARATUS.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern to assume different positions, .by means of notches in the frame on which they slide.

The posts G G, beam H, andbed-picccs P P, shown in the drawing, are designed to represent the framework of the saw-mill, in which the particular machinery used in my invention may be placed.

Arepresents a saw-log, as it lies upon the headblocks of the mill, in a position to be turned.

J is the hook used in canting or turning, and is supported and operated by a rope. or chain, which is at tached to a shaft turned by the pulley (L- This shaft should be placed in'suclr-a position, with reference to the log to be turned, as to make the rope a form an angle backward, from the point where the hook J is attached to the log, of about ten or fifteen degrees.

The object of having the hook operate upon such angle is, that the log may begin to slide back upon the head-block from the time that it strikes the inolined plane G O, instead of being held up by the hook until the log is nearly turned, which would be the case if the power were applied to the hook from a perpendicular or from an angle forward.

The pulleyd is operated by power, either of hand, or the m'otive-powerof the mill, applied to the shaft S, and communicated to it by means of the rope or chain S, which passes over the pulley c, and is attached to a groove in the pulley d.-

I The reacting weight It is attached to the pulley (l by means of a rope, as shown, and serves to draw the hook down to its natural position ready for use.

. The part represented by G B O B O is a movable and adjustable frame, which may be erected, as shown in the drawing by the representation in red ink, marked with the same letters.

Theparts G G of this frame, when erected, form an inclined plane, .the angle of which is about forty-five degrees, and its use is to receive and sustain tlie log as it is canted over.

This frame is erected by power, either of hand, steam, or water, applied to the rope M, as represented in the drawing. By depressing-the handle L, the pul:

ley l, which is attached .to a shaft, is turned, and the rope M being attached'to such shaft, and also to the part 0 of the adjustable frame, the frame is erected, and held to its place by thelower ends of the parts B B falling into the notches x x, they then acting assupporters to thepaits C G.

The frame is reduced to its natural position by depressing the treadle D, which acts upon arope, k, in such a manner as to draw the adjustable frame back to its position, and, when thus lowered, the parts 0 G are used as skids, over which to roll the logs.

The lower ends of the parts 0 O are of a rounded form, as shown by a a, and are attached to the body of the millvat a point considerably below (usually about six inches) the centre of the skids O O.

The purpose and effect of this particular form and manner of attaclnnent is to have the parts a c act as an eccentric, thereby forcing the log A backward from the ends of the head-blocks as the adjustable frame is erected.

The size and dimensions of the various parts of the apparatus above described may be varied to suit the various kinds andsizcs. of mills, and the work to be done.

The particular form of the machinery used in operating the working-parts of the apparatus may also be,

changed to suit the arrangement or plan of the mill where it is to be used.

When using my invention in a mill, I first erect the adjustable frame by applying power to the rope M, until the lower ends of the supporters B B fall into the notches m x then, having placed the point of the hook J beneath the log, raise the hook by turning the shaft S until the log is so far turned as to fall upon the inclined plane 0 0, when it slides back to its place upon the head-blocks, the log having been forced backward by the parts a a, when the adj ustableframe was erected, so as not to catch upon the ends of the head-blocks while being canted or turned. Then the log is turned, the frame is lowered to its natural positionby depressing the treadlcD.

By the use of the above-described apparatus, the

labor of turning or canting logs is very much lessened,

and may all be done by one person, however large the log may be.

What I claim to have invented, and desire to secure by Letters Patent of the United States, is-

- The skids or inclined plane 0 0, being rounded, as

shown at a a, the supporters B B, pivoted to planes- 0 O, and the notches a: at, all constructed, arranged, and operating as described.

In testimony that I claim the foregoing, I have here:

unto set my hand and seal, this 25th day of August,

BENJAMIN R. STEVENS. [L. s Witnesses:

OMAR H. SIMANDS, Enwmu) TAGGART.

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