US325339A - Feed-roll - Google Patents

Description

LNo Model.) 2 Sheets-Sheet 1. P. HANAVAN.

FEED ROLL. No. 325,339. Patented Sept. 1, 1885.

{Np Model.) 2 sheets -sneem. P. HANAVAN FEED ROLL.

Patented Sept. 1, 1885" FIG.8.

UNITED S'rarns ATENT @rrrcn.

PHILIP HANAVAN, OF OAKLAXD, CALlFOR-NIA.

FEED-ROLL.

SPECIFICATION forming part of Letters Patent No. 325,339, dated September 1, 1885.

Application filed June 1, 1885.

To aZZ whom it may concern:

Be it known that I, PHILIP Hannvmv, of Oakland, Alameda county, State of California, have invented an Improvement in Feed-Rolls for W'ood-XVorking Machinery; and I hereby declare the following to be a full, clear, and exact description of the same.

My invention relates to certain improvements in feed'rolls for wood-working machinery.

It consists of removable adjustable teeth, and a means for securing them in the roll, which will be more fully explained by reforonce to the accompanying drawings,in which Figure 1 shows a feed-roll complete. Fig. 2 shows a modification of the same. Fig. 3 shows the manner of fixing the teeth in the roll. Fig. 4c is a section of the modification.

A is the hub of the feed-roll provided with flanges 1%, between which the teeth G are to be held. These teeth are formed of strips of steel cut from a bar, thrcesixteenths of an inch thick and of a width suflicient to allow them to just fit between the flanges 13. They are cut of such a length as to extend from the hub outward between the flanges, projecting beyond the rims of the flanges as far as may be desired, having their outer edges beveled or ground, so as to present sharp edges, as shown. These plates have holes or openings punched through them, and the flanges B have indentations formed in them on the inner sides, so that the metal by which the teeth are held in place and fixed to the roll will be held firmly and prevented from slipping around between the flanges. 1n order to fix these teeth in their places, I bore a hole in a wooden block of a size sufficient to admit the end of the hub, which is outside of the flanges. A channel is cut concentric with this hole, so that its inner edge is just flush with the peripheries of the flanges B when the hub is set vertically in the central hole. A series of short wooden strips are then set in this channel, projecting up between each pair of teeth all around the periphery of the flanges, against which the inner sides of the strips rest, thus making, with the teeth, an inclosure that may be made tight with putty and bound with a strip of cloth. Within the rims and around the hub fluid babbitt or other suitable metal may be poured through the holes in the upper end of (No model.)

the hub or flange. This metal runs around through the openings in the plates forming the teeth, and fills the spaces between them flush with the outer periphery of the rims, thus leaving the sharpened edges of the teeth projecting beyond the rims.

The indentations and holes made in the hub and the flanges will hold the teeth, and the intervening metal prevents them from slipping around between the hub and the flanges.

In some cases a single flange may be made, as shown in Fig. 2, having a channel or groove formed concentric with and parallel with the shaft-opening, and between it and the exterior rim. Holes are made through the exterior rim, and the teeth (which are made of round steel, with their outer ends flattened and spread out, so as to form wide chisel points or teeth) have their inner ends inserted through these holes, so as to rest against the inner circumference of the channel before described. Melted metal is then poured in this channel around the inner ends of the teeth, which are notched or formed so as to be held by the metal, and the device is complete.

In the ordinary construction oi feed-rolls the teeth are formed by grooves or channels out across the face of the roll by a milling-niachine, leaving the teeth projecting upward; but these being formed in the metal itself soon wear dull, and the roll must either be thrown away or else again run through the millingmachine, which takes time. This construction also makes it very expensive to make them of steel. teeth have been inserted in holes formed in the rim of the roll, but these teeth are apt to split the lumber, and are not satisfactory.

\Vith my device, whenever the teeth become worn they may be easily removed by simply melting out the soft filling-metal, and then they can be resharpened and set a little farther out between the hub and the flanges, after which melted metal is again poured in and the teeth are firmly fixed. Teeth formed in In some cases sharp-pointed this manner may be made of steel, can be easily sharpened, and may be tempered so that they will last for a long time.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a feedroll for woodworking machinery, the roll having the independent adjustable flat-edged teeth projecting around its periphery, and having their inner ends secured by a filling of fusible metal poured into the channel between and around the independent teeth, substantially as herein described.

2. In a feed-roll for wood-working maohin ery, the hub having a rim or flanges with their intervening channel, in combination with independent adjustable teeth or plates set into the rim, and a filling of fusible metal poured in and around said teeth, whereby they are held, substantially as herein described.

3. In a feed-roll for woodworking machinhand.

PHILIP HANAVAN.

W'itnesses:

PHILIP READER, B. HoMANU

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