US233071A - Wood-pulp engine - Google Patents

Description

J. CHASE. Wood Pulp Engine.

No; 233,071. Patented Oct. 12, 1880.

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JEFFERSON CHASE, OF ORANGE, MASSACHUSETTS.

WOOD-PULP ENGINE.

SPECIFICATION forming part of Letters Patent No. 233,071, dated October 12, 1880.

Application filed February 24, 1880.

To all whom it may concern:

Be it known that I, JEFEERsoN CHASE, of Orange, in the county of Franklin, State of Massachusetts, haveinvented certain Improvements in VVood-Pulp Engines, of which the following is a specification.

This invention is an improvement on a class of engines for reducing wood fiber to pulp, as shown and described in Letters Patent of the United States issued to me on the 3d day of October, 1876, and numbered 182,891.

My present improvements relate to means for elevating and depressing the adjustable stone with respect to the stationary stone, in order to compensate for wear or regulate the gage or capacity of the engine; and it consists in details of mechanism, as hereinafter de' scribed.

In my patented engine above referred to the rotary stone was placed above the stationary stone, and the mechanism for adjusting said rotary stone was placed above the latter at the top of the engine.

I have found in practical operation with the engine that the adjusting mechanism shown in my patent and its position above the upper stoneis attended with several objections, which I avoid by placing the rotary stone below the stationary stone, and the adjusting mechanism below the latter, while the nature of the adjusting mechanism shown in the present instance is such that it operates to better advantage than that in the patent.

The drawing accompanying this specification represents a sectional elevation of an engine embodying my improvements.

The frame of the engine is shown in said drawing as composed of two upright side standards or housings, A A, erected at bottom upon a common bed-plate or foundation, B, and at top bridged by a flat plate, 0, the whole being of solid material and securely bolted together.

The two horizontal grinding disks or stones are shown at D and E as disposed within an upright hollow cylinder, F, which constitutes the grinding-chamber of the engine, of which the plate 0 is the bottom, such chamber or cylinder being erected centrally upon the said plate 0, and having at bottom a chute or spout, G, to permit of escape of the pulp, the upper and stationary stone, D, being secured to or within the cap or cover A of the cylinder F, while-an axial opening, a or b, is created inboth the cap A and stoneD, through which the material to be groupd is precipitated between the two stones. The lower and revolving stone, E, is secured to the upper end of a vertical shaft, 1, which finds a bearing immediately below such stone in the bridge-plate C, while the lower end of such shaft is stepped in a cup-shaped block, 0, disposed within a recessed hub or annular flange, d, erected upon a horizontal sliding beam or cross-head, e, which is supported in guides or grooves f f, erected in the inner faces of the standards A A, the hollow step or cup 0 being confined to the hub d by bolts 8 s, &c., in such manner that should any discrepancy from wear or otherwise occur in the relative positions of the shaft and cross-head the height of the step may be raised to compensate for such discrepancy, while the cup constitutes a receptacle for lubricating material, and the recess of the hub to contain flowing water.

To effect the elevation or depression of the lower stone I employ the followingmeohanism: Upon each side of the shaft I, I dispose an upright shaft, 9, and I out upon the lower end of each of these shafts a screw-thread, which screws through a female screw-thread tapped in a hole in the cross-head 0, each shaft at its lower end resting upon the base B, and near its upper end being journaled in a bracket, h, extending horizontally inward from the adjacent standard A. To the top of each shaft g, I secure a worrn-gear ,'i, which engages a worm, 7c, fixed upon a horizontal shaft, 1, which is mounted in bearings in the standards AA,

one end of such shaft extending through the standard and having a miter-gear, m, fixed to it, which meshes into a second miter-gear, a, fixed to the lower end of a vertical shaft or rod, 0, this latter shaft being mounted in guides 12 19 extending from the outside of the standard, and having a hand-wheel, r, affixed to its upper end.

By means of the handwheel, whose rotations are transmitted to the screw-threaded shafts g g through the miter-gears m and n and worm and worm-gears t i and k k, the attendant is enabled to elevate the lower stone to compencross-head and carrying Worm-gears by which they receive rotary motion, the worm-gears engaging Worms mounted upon a horizontal shaft suitably journaled in the engine-frame and carrying at one end a miter-gear, and the upright hand shaft or rod carrying a mitergear to engage the gear on the worm-shaft, the whole operating as stated.

JEFFERSON CHASE.

sate for its wear or to change the gage of the engine.

I claim The herein-described mechanism for effecting the adjustment of the lower or rotary stone, consisting of the following elements in combination with such lower stone and its supporting-shaft, to Wit: the sliding cross-head guided by'upright grooves in the standards of the engine-frame and supporting, by an ad- Witnesses: justable step the weight of said lower stone, F. OUSTIS, the twin screw-threaded shafts actuating such H. E. LODGE.

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