US70592A - meriam - Google Patents

Description

@niiet gisten getint @fge YRUFUS N. MERIAM, OF WVORCESTEH, MASSACIIUSETTS.

`Letters Patent No. 70,592, dated November 5, 1867.-

- IMPROVEMENT IN PLANING MACHINES.

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TO ALL WHOM IT MAY OONCERN:

Be it known that I, RUrUs N. MERIAM, of Worcester, in the county of Worcester, and State of Massachusctts, have invented certain new and useful Improvements in Planing Machines; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, making a portion of this specification, in which- Figure 1 is a side view of a planer constructed according to my invention.

Figure 2 is a vertical section of vthe same, taken at rightanglcs to iig. 1.

Similar letters of reference indicate corresponding 'parts-in both figures.

In that variety of planing machines designed not only for4 planing the surfaces of lumber, but also for l matching the edges thereof, much inconvenience has resulted from the necessity of lowering that portion of the bed ofthe machine which supports the upper ends of the vertical shafts which carry the matching-cutters whenever it is required to adjust the said cutters for matching lumber of different thicknesses, or to move the said shaft out of the way in using the planer for surface planing only. The object ofthis invention is to remedy this defect; and, to this end, it consists in a novel combination of parts, whereby the aforesaid shafts may be raised or lowered with reference to the bed without changing the position of the said bed, and whereby the.

operation of adjusting the edge or matchin'gcutter heads (over the screws used in other machines) is greatly facilitated. As the two shafts are operated simultaneously, and consequently maintain their relative position in range with each other at any elevation, they can be adjusted much more speedily than by screws; and by this arrangement they can' be lowered beneath the surface of the bed, for surface planing only, without removing any portion of the bed, and in a moment of time.`

To enable others to understand the construction and operation of my invention, I will proceed to describe it with reference to the drawings.

A represents the frame of the machine, and a the horizontal bed thereof, which supports the lumber during the operations of matching and planing. A portion of the bed is formed by a strong transverse bar, a*, whichY has attached, in any suitable manner, and in a vertical position, upon one of its sides, two blocks B Bi, which are formed with vertical bearings, which receive the 4upper ends of the two shafts C 0*, hereinafter full;r

described. The block B is rigidly fixed upon the bar ati; but the other block, B, is so attached to such bar that it may slide freely thereon, this sliding movement of the block B* being obtained by means of a horizontal screw, D, one end of which works in a suitable bearing in one side of theframe A, and the other or threaded por-tion of which works in a female screw formed in the sliding block Bl, the said screw being furnished with a bevel-pinion, Z, which gears into a similar pinion, a2, secured to the inner end of a longitudinal shaft, c, the

rear end of which is provided with a crank, Zzi, so that, by turning the said crank, the screw D may be readily operated to bring the sliding block to a greater or less distance from the other or fixed block B, as may be required. Extending downward from the fixed block B is a fixed vertical standard, E, in one side of which is formed a dove-tail groove, which receives the dove-tail inner portion of a slide, F, which is formed with a Vertical bearing, which receives the lower end of a vertical shaft, C, which, together with the shaft 0*, hereinafter described, receives a rotary motion from belts, or by other suitable means. The upper end of the said shaft passes through'the bearing in the fixed block B, and, when :the machine is used for matching, is furnished with a suitable cutter-head. The slide F has lformed upon it a downwardly-extending rack, d, which gears into a pinion, e, upon a transverse shaft, f, one end of which is supported in abearing formed in an arm, al, attached to the standard E, and the outer end of which works through a bearing, indicated at b,.at the side ofthe frame A, and is provided with a loaded operating-lever, g. The block Bi is furnished with a downwardly-extending standard, Ei, corresponding to that ofthe block B,'the lower end of the said standard E* being stcadied by means of an arni, L, attached thereto, and having its outer end encircling the shaft f, as shown in fig. 2. This standard E* is, like the standard E, furnished with a vertically-moving slide, marked F*, to which is attached the vertical shaft 0*, corresponding to the sha-ft C of the other slide, and furnished, during the operation of matching, with a cutter-head` in the same manner. 5

The rack d* of the slide F* gearsinto a pinion, 0*, upon the shaft f, so that, by turning the said shaft in one direction or the other, the piniens e e* will operate the racks d d* to raise or lower, as the case may be, the

slides F F1, and consequently the vertical shafts C 0*, the end portions of the said shafts sliding freely through their bearings in the blocks B Bei, so that, by this means, the shafts may be raised or lowered to adjust the cutters at their upper endsto match lnmber of any desire'd thickness, or, when such cutters are removed, to bring the ends of the shafts wholly below the bed of the machine, as shown in red outline in iig. l, without disturbing any portion of the said bed, at the same time that the shafts C 0*, and consequently the cutters thereof, may be adjusted at any desired distance apart, in tbeoperation of matching, byv moving the block B",

land the parts attached thereto, by means of the screw D, as hereinbefore explained, any interference with the means wherebyrsuch adjustlnent is made, bythe vertical movement of shafts, as when a portion ot' the bed is moved with the said shafts'fbeing also etectully avoided. What I claim as my invention, and desire to secure by Letters Patent, is

The slides F Fl, carrying the shafts C 0*, and constructed with racks d dk, in combination with the blocks B B*, formed with standards E El, and the pinions c 0*, whereby the said shafts may `be raised or lowered with reference to the bed a, constructed and operating substantially as herein set forth.-

RUFUS N. MERIAM.

Witnesses:

J. HENRY HILL, ,Win H. YOUNG.

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