US680642A - Veneer-cutting machine. - Google Patents

Description

(No Model.)

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Patented Aug. I3, |90I. H. H. COE.

VENEER- CUTTING MACHINE.

(Application f led Apr. 1B, 1901.)

2 Sheets-$heet I.

No. 680,642. C Patented Aug. I3, |901. H. H. CUE.

VENEEH CUTTING MACHINE.

(Application led Apr. 18, 1901.)

2 Sheets-Sheet .2.

(No Model.)

@12975555 l m /QMZ n4: Noam trans co.. Pumauno.. wAsn UNITE STATES4 IIENRY II. COE, OF PAINESVILLE, OHIO.

VENEER-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 680,642, dated August 13, 1901. application filed April 18, 1901. Serial No. 56,433. (No model.)

To all whom it may concern:

Be it known that I, HENRY II. COE, a citizen of the United States, residing at Painesville, in the county of Lake, State of Ohio, have invented certain new and useful Improvements in Veneer-Cutting Machines, and I hereby declare the following to be a clear,com plete, and exact specication, such as will enable those skilled in the art to which it appertains to make and use the same.

My invention relates in general to improvements in rotary-cutting'veneer-machines, and it relates particularly to improved means for shifting the presser-bar.

In lthe rotary-cutting veneermachine in general use and from which the most satisfactory results at present are obtained the presser-bar bears ou the stock justabove the cutting edge of the knife, thereby keeping the material compact along the cutting-line, which is necessary in order to get an even and satisfactory veneer. It is also necessary in order to produce the desired result to adjust the pitch of the knife and presser-bar to conform to the stock as its diameter is reduced. This has been provided for in the most satisfactory machines by an automatic adjustment. It frequently happens in cutting veneers from any kind of wood that, owing to different density of the fiber, irregularity in the grain, or other causes, slivers will chip off of the log and clog under the presser-bar, causing damage to the veneer by scarifying it. It has usually been the practice when this has occurred to stop the inachine, throw the parts out of adjustment, remove the obstacle, and then readjust the machine, which of course means a loss of considerable time.

The object of my invention is to provide means for shifting the presser-bar away from the log, thus allowing the obstacle to free itself from the machine, and then throw the bar back and lock it in the proper place without moving the adj ustment-block or affecting the automatic adj Listing mechanism. This is accomplished by the construction and combination of parts hereinafter described, and pointed out definitely in the claims, reference being had to the accompanying drawings, forming a part of this specification, in which Figure I is a plan view of a presser-bar and the adjustment-blocks with the improvement attached, a portion of said presser-bar being broken away. Fig. II is a side view in direction of arrow in Fig. I.

specification.

Referring to the drawings, a a' are the adjustment-blocks which form a part of the automatic adjusting mechanism now in general use for adjusting the knife and presser-bar. I-Ieretofore in most cases where the automatic adjustment has been used thein'esser-bar l) has been rigidly attached to or integral with I the adjustmen t-blocks, as it is the connection of said blocks with the bar that regulates .the adjustment of the presser-bar. It is therefore essential to the proper working of the machine that the presser-bar shall move simultaneously with the adj ustment-blocks, and it will readily be understood from the following description that this important feature is retained, but that the presser-barmay be shifted back clear of the stock and then thrown toits original position relative to the adj ustment-lolocks and stock without changing the position of the said adj ustment-blocks or disarranging the automatic adjustment.

As the invention relates only to the shifting of the presser-bar without affecting the automatic adjusting mechanism, it is not deemed advisable to cucumber the speciiication and drawings with the said automatic mechanism or other parts of aveneer-machine only so far as they relate to this improvement. The adj ustment-blocks a ct are provided with brackets c c. Journaled in the brackets c c is a longitudinal shaft CZ. On the inner face of the adj ustment-blocks, extending the entire length thereof, are the channels 0,2 a2. Each end of the presser-bar 1J is provided with a ledge h', which fits into the channel a2 and is adapted to slide freely therein. Keyed or otherwise rigidly attached to the shaft d, in proximity to each end thereof, are eccell- Fig. III is an end l view showing the relative position of the parts IOO tries e e', which extend into and fit openings in the outer ends of connecting-rods ff, the inner ends of said connecting-rods f f being pivotally connected with the presser-bar by means of stud-bolts ff or other suitable means in the saine plane as the ledges b. Rigidly connected with the shaft at any convenient place is a hand-lever l. In the construction illustrated the eccentric e, which is on the side nearest the operator, is provided with a socket l', adapted to receive the handlever l. This answers the desired purpose, as the eccentric is keyed to the shaft CZ.

Having now fullyT described the construction, I will proceed to explain the operation.

When the machine is in its operative position for cutting veneer and the presser-bar b bearing on the log, the several parts are in the position shown in Fig. III, with the handlever Zup and the presser-bar locked to the adjustment-block, and it will move with said block without changing its relative position. When a sliver or other obstacle detrimental to the product or the machine appears, the operator throws the hand-lever Z down to the posit-ion shown in Fig. IV. This action oscillates the shaft d and the eccentrics e e', keyed thereto. These in turn through their connection with the connecting-rods ffand the pivotal connection of said rods f f with the presser-bar cause the ledges b -to slide in a horizontal plane in the channels a2, thus drawing the presser-bar back free from the stock without changing the position of the adjusting mechanism. When the obstacle has been removed and the hand-lever carried back to its first position, the presser-bar is brought back to its right place relative to the adjustment-block without disturbing the automatic adjusting mechanism,as the ad j ustin g-blocks have not been moved during the several operations of shifting the presser-bar.

Having described `my invention, what I claim, and desire t0 secure by Letters Patent, 1s-

l. In a vencercutting machine, adjustment-blocks, a longitudinal shaft having bearing connections with said blocks, transverse channels in the inner faces of said blocks, a presser-bar having ledges on the ends thereof, said ledges adapted to slide in the channels in the adjustment-blocks, and suitable connections between said presserbar and the longitudinal shaft, whereby said presser-bar can be made to slide backward and forward in the said channels, substantially as described and for the purpose set forth. y

2. In a veneercutting machine, adjustment-blocks, a longitudinal shaft journaled in brackets attached to said blocks, transverse channels in the inner faces of said blocks, a presser-bar, ledges on the ends-of said presser-bar, said ledges adapted to slide in the channels in the-adjustment-blocks, connecting-rods pivotallyconnected with the presser-bar, eccen trios rigidly attached to the said horizontal shaft and registering in openings in the connecting rods and suitable means for oscillating the shaft, substantially as specified.

3. In a veneer-cutting machine, adjustment-blocks, a longitudinal shaft journaled in brackets attached to said blocks, transverse channels in the inner faces of said blocks, a presser-bar, ledges on the ends of said presser-bar, said ledges adapted to slide in the channels in the adjustment-blocks, connecting-rods pivotally connected with the presser-bar in a plane with the ledges, eccentrics rigidly attached to the said longitudinal shaft and registering in openings in the outer ends of the connecting-rods, and a handlever rigidly attached to the longitudinal shaft, whereby said shaft may be oscillated, substantially as and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

HENRY H. COE.

Witnesses: GEO. H. SHEPHERD, F. GRIsWoLD.

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