US90959A - Improvement in device for turning saw-logs - Google Patents

Description

NPETERS, PNOTWLITHOGRAPNEIL WASHINGTON D G dilated Stabat WARREN RICHARDSON, OF COLFAX, CALIFORNIA.

Letters Patent No. 90,959, dated .7u-ne 8, 1869.

IMPROVEMENT IN DEVICE FOR TURNING SAW-LOGS.

Q-Or- The Schedule referred to in these Lettera Patent and making part of the same.

To all whom it may concern:

Be it known that I, WARREN RroHARDsONyof Colfax, county Of P lacer, State of California, have invented an-Adjustable Sliding Block for Saw-Mills; and I do hereby declare the following description and accompanying drawings are sufficient to enable any person skilled in the art Or science to which it most nearly appertains, to make and use my said iiivention or improvement without further invention Or experiment.

My invention relates to a new and improved device for canting saw-logs, after they have been faced by the' saw On one side, and require to be turned, so that the remaining sides may also be faced; and, in fact, it is used to slide the log or stick being sawed to its place on the carriage, at any stage of the sawing, where care is to be exercised to prevent splitting or injury to the edges Or corners ofthe stick.

To more fully illustrate and explain my invention,- reference is had to the accompanying drawings, formv ing a part Of-A this specification, of which- Figure 1 is a sectional elevation.

Figure 2 is a plan.

Similar letters of reference in each of the figures indicate like parts.

I iii-st construct a solid and substantial frame, .composed of the bottom timbers M, upper timbers` S, and cross-timbers O, capable of supporting the weight Of the heaviest logs. Y

The upper timbers S are providedwith mortises, which extend from the front end to near their middie, and pass entirely through the timbers.- The lower timbers are also mortised directly beneath the mOrtise in the upper timbers, and are, in fact, a continuation of the same.

In these mortises I place blocks B B, the upper ends of which are bevelled to an incline, the lower portion of the incline beingtowards the front of the carriage or frame.

These blocks are arranged to slide. up and down by means of eccentrics I I, placed on a shaft, C which passes across the lower part of the frame.

When lowered, the upper ends of the incline blocks are on a level withthe upper face Of the timbers S S, thus being entirely out of the way, so as to allow the logs to be rolled along'over the frame and placed upon the carriage. The lower ends of the blocks upon which the eccentrics operate, are cutin a circle, so as to give as much bearing-surface as possible upon the eccentrics.

The frame is set near the carriage upon which the 'logs are placed, and at right angles to it, and the logs are first. rolled over it and On to the carriage previous to sawing. One side Of the log is then placed Orsawed off, and the carriage run back to its former position.

The next step to be taken is to turn the log, so as to bring another side 'to the saw, in Order that it may be squared previous to sawing it into lumber' and 7 this is donc by raising the blocks B B, so as to present an inclined plane upon which the log may be placed, by merely turning it Over, so that the side already faced will fall upon the blocks, after which it can easily be slid back to its place upon the carriage, in the proper position for taking oi'l` the slabs from the other sides.

The device is especially useful and convenient for cant-ing the log into position upon the carriage while vsawing it into scantlings or square timbers, as, when it has been sawed Of the .proper width in one direction, and itis desired tO turn it, all that is necessary is to lower the blocks B B, and, as the log is sawed, it is moved over upon the front ends of the timbers S.

The shaft C is then turned by means of a belt-connection, bevel-gear, Or other device operated by the power which runs the mill.

This causes the eccentrics I I tO raise the blocks B B, and consequently the timbers, giving it a pitch or incline, when, by the use of dog-hooks, it may be canted into the proper position for cutting it in the Opposite direction.

. The usual manner Of cauting lthe logs to their posi-- tion on the carriage is to place wedges under them, which consumes much time, and is very laborious; while, with my device, Athe logs can be handled with great ease and. celerity.

Having thus described my invention,

Vhat I claim, and desire to secure by Letters Patent, is-

The blocks B B, sliding vertically in mortises, and having bevelled tops, in combination with the eccentrics I I and shaft O, the whole being constructed and arranged substantially -as and for the purpose set forth.

In witness whereof, I have hereunto set my hand and seal.l

Witnesses:

- GEO. H. STRONG,

GEORGE SPAULDING.

WARREN RIOHARDsON. [as]

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