US723763A - Knife-spacer for paper-stock engines. - Google Patents

Description

No. 723,763. PATEN'IED MAR. 24, 1903.

` M. P. VAN RYZIN 6r H. G. SAEGKER.

KNIFE SPACER POB. PAPER STOCK ENGINES.

APPLICATION FILED JAN. 22, 1903.

N0 MODEL.

NTTED STATES PATENT OFFICE.

MARTIN P. VAN RYVZI-N AND HERMAN G. SAECKER, OF APPLETON, WISCONSIN.

KNiFE-SPACER Foa PAPER-STOCK ENGINES.

SPECIFICATION forming part of Letters Patent N o. 723,763, dated March 24, 1903.

VApplication filed January 22, 1903. Serial No. 140,059. (No model.)

To all whom, it may concern:

Be it known that we, MARTIN P. VAN RYZIN and HERMAN G. SAECKER, citizens of the United States, and residents of Appleton, in the county of Outagamie and State of Wisconsin, have invented certain new and useful Improvements in Knife-Spacers for Paper- Stock Engines; and we do hereby declare that the following is a full, clear, and exact description thereof.

Heretofore it has been common tp employ built-up wood spacers between the knives of shells of paper-stock engines, the veneer ply or plies of each spacer being outermost, so as to be readily removed by stripping when said knives are narrowed by wear. The builtup spacers employed between angular knives have been heretofore cross-kerfed from one side only nearly their entire width, so as to be bent to match said knives, the cross-kerfing of some of these tillers being from the right side and that of others from the left side. From the fact that the spacers are tapered in the direction of their depth, as well as longitudinally, and their veneer plies are necessarily outermost the cutting of these spacers from abuilt-up block is expensive, because of waste in the matter of time and material. This type of spacer is also unsatisfactory iu practice, because its veneer ply or plies become unglued and fall away, to the detrimentof the engine and stock therein u nder treatment.

Ourinvention has forits object to cheapenV production of wood spacers for the shells and cores or cones of paper-stock engines, as well as to avoid the objections to the built-up type of such spacers, and to provide spacers for the use specified that are universal in the matter of bending to match angular knives and which may be turned end for end, aocording to the direction ofthe taper of the spaces they are to lill, said invention consisting in what is hereinafter particularly set forth with reference to the accompan yin g drawings and subsequently claimed.

Figure l of the drawings represents a plan view of one form of Wooden spacer in accordance .withl our invention partly broken away,

the same being designed for the lshell of a paper-stock engine; Fig. 2, a side elevation of the same; Figs. 3 and 4, vertical transverse sections of said spacer, respectively indicated by lines 3 3 and 4 4 in the rst figure; Fig. 5, a perspective view of another form of our improved spacer, the same be ing designed for acore or cone of a paperstock engine; and Fig. G, a transverse section of the latter form of spacer.

Referring by letter to the drawings, A indicates a wood spacer for knives of the shell of a paperstock engine, and A' a wood spacer for knives of the coreor cone of such an engine, each of these spacers beinga stick having one or more kerfs b its entire length from both sides toward the center adjacent to its outer face, a thin central web of material being left betweenopposite kerfs, and in practice the material outermost from the kerfs is broken away in a strip when the adjacent knives are worn close to what is then the outer face of the filler.

The, spacer A is shown provided with a plurality' of longitudinal kerfs b from each side thereof toward the center, whereby this form of spacer is made to provide for the breaking away from the same of a plurality of outer strips in successive order from time to time as adjacent knives in a paper-stock engine become worn in practice. Spacer A is also shown provided with transverse kerfs c from both sides toward the center intermediate of its ends, this kerfing being as deep as the longitudinal kerfs aforesaid and permitting the bending. of said spacer either right or left to match angular knives between which it may be interposed. The ends of the spacer are cut square, and said spacer may be turned end for endas the taper of the space it is toA till may require.

The'spacers are tapered in the direction of their depth and length, as is customary with devices of this character, andsaid spacers being sawed frorna single block the latter may be manipulated by the sawyerto save time and material that-is necessarily wasted in cutting spacers from built-up blocks. We also save the time and labornecessaryto the making of blocks from which to cut built-up spacers.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. A Wood spacer for interposition between knives of the shell or core of a paper-stock engine and which consists of a stick provided with opposite longitudinal kerfs adjacent to its outer face. v

2. A wood spacer for interposition between knives of the shell or core of a paper-stock engine and which consists of a stick provided with a plurality of longitudinal kerfs from each side thereof toward the center adjacent to its outer face. g

3. A Wood spacer for interposition between angular knives in a paper-stock engine and which consists of a stick provided with opposite transverse kerfsintermediate of its ends.

4. A Wood spacer for interposition between angular knives in a paper-stock engine and which consists of a stick having opposite 1ongitudinal kerfs adjacent to its outer face and opposite transverseV kerfs intermediate o't its ends.

In testimony that We claim the foregoing We have hereunto set our hands, at Appleton, in the county ot' Outagannie and State of Wisconsin, in the presence of two Witnesses.

MARTIN P. VAN RYZIN. HERMAN G. SAECKER.

Witnesses:

E. F. OLMSTEAD, P. M. CONKEY.

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