US71814A - Anton steeit and henry strut - Google Patents

Description

vTo ALL WHoMl 1T MAY coNoERN:

@uiten tstre stent @fitta` ANTON STREIT AND HENRY STREIT, OF CINCINNATI, OHIO, ASSIGNORS TO I. A. FAY AND OOMIANY, OF SAME PLAGE.

Letters Patent No. 71,814, dated DeceMibcr-, 1867'.

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Be it known that we, ANTON STREIT and HENRY STILEIT, of Cincinnati, in the county of Hamilton, and State of Ohio, have' invented a new and useful Improvement in the Beds of Wood-Planing Machines; and we do hereby declare the following to be a full and exact description of the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a perspective elevation of the bed and cylinder-frame of a common planing-machine with our improvement,l and vFigure 2 is a cross-section throughfg. Lon line O d.

The nature of our invention consists in constructing the bedpiece of a rotary planing-machine with a false or detachable face of glass or other similar material embedded in a suitable cavity formed in the bed, -for the purpose as herein described. i

In planing wood'with revolving cutters, it is found necessary to provide a solid bed-opposite or beneath the cutters, to resist the shock and jar from the cut, and as no clamping-device can be applied to the board or piece near to the point being acted upon by the cutters, it is also found necessary to arrange the feed-'rolls and guides so that the board orpiecemay bear rmly upon the bedbeneath or opposite the cutters, causing friction and a rapid wear of the bed from the rough or undressed side of the lumber passing over it. This rapid wear becomes a source of greatl diiiculty when the lumber dressed has been' rafted in muddy water, for transportation, or exposed to road-dust in seasoning. Another trouble from this wear is experienced in planing'and matchingmachines, when flooring-boards of narrow width are passed continually over a particularportion of the bed, wearing it away at on'e point and uutting the machine for dressing wide boards. Attempts to use rolls as a substitutefor plane surfaces have thus far been unsuccessful, from thcir'presenting but aline o f contact, and

not forming a firm bed as a support.

I The invention here illustrated overcomes in a great measure the diicultics of wear and friction, by insorting beneath or opposite the cylinder a plate of glass, porcelain, or other similar hard material, in such manner that it`can be repaired or replacedwith ordinary skill, without replaning or refacing the metal'portion of the bed; the harder nature of the material giving greater durability, and from its anti-friction qualities causing the lumber to feed with less power and pressure upon the feed-rolls.

To enable others skilled in the art lto make and use 'our invention, we will proceed to describe the manner of constructing the same, with the aid of the drawings. v p

a is a. bed-piece of a common woodplaning machine, with the cylinder-supports b b cast upon it. C is a plato of -glass or similar hard material inserted in thc main casting, by means of a suitable cavity cored out to receive it, and held firmly in its place by a filling, f, of brimstone or other plastic material, that can be melted -and poured around and under lthe plate C. d is the cutting-cylinder, and h represents a board being passed over the bed vCL Tho hard bed-piece() is set in the same manner in moulding, sticking, and other wood-planing machines, when the conditions of their operation require its use.

We are aware that glass has been used as a facing upon carpentersplanes such use of glass we do not claim, but

What we do claim as our invention, is-

The removable glass-facing C of the bed of a wood-planing machine, when constructed and applied substantially as and for the purposes described. v

. ANTON STREIT, HENRY STREIT.

Witnesses:

W. C. HARD, W. S. KELLEY.

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