US99353A - Improvement in step-supports for mill-spindles - Google Patents

Description

J. RUSSELL. Mill Spindle. No. 99,353. Patented Feb. 1, 1870.

@Inventur NJETERS, PHOTD-LTHOGHAPHER. WASHINGTON. D c.

waited Startet JOHN RUSSELL, OF PRAIRIE, MISSOURI.

Letters .Patent No. 99,353, dated February 1, 1870. l

IMPRQVEMENT IN STEP-SUPPORTS FOR. MILL-SPINDLES.

The Schedule referred to in these Lettera Patent and part of the sama To all whom (it may concern:

Be it known that 1, JOHN RUSSELL, of Prairie, in the county of Clinton, and State of Missouri, have invented a new and useful Improvement in Step-Supports for M-ill-Spindles; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in thel art to `make and use the same, reference being had to the accompanying drawings, forming part of this specification. A i

This invention relates to improvements in the adjusting devices for the steps of mill-spindles; and cousistsin the arrangement of the steps in the top of a vertically-adjustable tube or other sliding support, provided with vertical guides, and working through guideplates, to insure the vertical position and to prevent rattling, the said supports being mounted on a r'od rising up from the bridge-tree and jointed to it, so that the joint may compensate for the curve described by it, due to the one end of the bridge-tree being fixed, and the other swinging around the said fixed point, and the steps may be raised in a right line.

Figure l represents a side elevation of my improved arrangement, and j Figure 2 represents a sectional elevation of the same, taken on the line x a: of fig. 1.

Similar letters of reference indicate corresponding parts. i l

A represents a'part of the huskframe, and B, the bridge-tree; The steps for the spindles are commonly set on these bridge-trees, and, owing to the curves described by the said steps in 1aisingand turning the free ends by the adjusting-screws C, for raising or lowering the stone, for grinding coarser or finer, it is impossible tokeep the said spindles perpendicular to the faces of the bed-stones.

To avoid this diculty, I propose to place the bridgetrees lower down, and introduce the step-supports D, which may consistspreferably of hollow tubes, on the tops of which, the steps E, of any approved construction, may be xed in `any suitable way, supporting the said step-supports on rods F, jointed to ,the bridgetree, and placing them in holes in guideplates fixed to the beamsfH.

I also attach the broad lateral arms I to the sup port D, and provide the vertical adjustable guideplates K to press against the said arms, and to be adjusted exactly perpendicular to the face of the bedstone by the adjustingfserews L, so as to guide the support properly in Working up and down, and to prevent it from chattering or rattling against the edges of the plates G, through which it passes.

Lhe plate I, which forms the lateral arms, in this example, passes through the tubular support, and rests inside thereof', in the notched upper end of the rod F. f

It will be seen, that by this arrangement, no matter how much the bridge-tree is raised, the foot of the spindle, resting in the step E, will always rise in a vertical line,or in a line perpendicular to the face ofthe bed-stone, as it may be without any deviation.

Having thus described my invention,

I claim as new, and desire to secure by Letters Patent- The combination of the hollow tubular support D, jointed rods F, lateral arms I, guide-plates G K, and adjusting-screws L, with the step E, all arranged as set forth, and operating to retain the spindles always in a true perpendicular position with respect to the bed-stone.

JOHN RUSSELL.

Witnesses:

EWEN O. HALE, J. W. BOWLs.

Images