US334997A - Gang-edger - Google Patents

Description

(No Model.) 7

S. S. VAIL 8: J. SOLLIDAY.

GANG BDGER.

No. 334,997. Patented Jan 26, 1886.

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flttorney UNITED; STATES PATENT OFFICE..-

SAMUEL S. VAlL AND JAMES SOLLTDAY, OF ST. LOUIS, MISSOURI.

GANG-EDGER.

. SPECIFICATION forming part of Letters Patent No. 334,997,6ated January 26. 1886.

Application filed November 17, 1884. Serial No. 148,180. (No model.)

To aZZ whom it may concern Be it known that we, SAMUEL S. VAIL and J AMES SOLLIDAY, citizens of the United States, residing at the city of St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Gang-Saw Edgers, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to animproved gangedge sawing-machine for sawing the edges of boards and for splitting them to desired widths.

The invention consists in a special system of parts comprising several improved features relating to the arrangement of the saw mandrel and of the feed-pressure rolls, which are made and used substantially as set forth hereinafter, and as shown in the accompanying drawings, in which Figure 1 is a perspective View, and Figs. 2, 3, and 4 are details of parts.

The object of the invention is to provide the machine with apracticablesystem of pressure-rolls to hold the material being sawed, having a nearly vertical movement, which can be lifted by the operator from his position at the end of the apparatus, so as to take in boards, and which can be set to hold the rolls at any adj ustable point, while free to rise above but not to sink below the same, and to adjust and arrange the parts to enable this to be done, and to make the machine with the same simple, compact, cheap, and desirable. The system of parts forthis purpose which require improvement to adapt them therefor consists in the pressure rolls held in pivoted hanger-frames with a lifting-stirrup frame and a lifting-shaft and. chain and hand-wheel, and in the sawmandrel and its associated parts, made and arranged so that it may be taken out endwise conveniently for the sharpening, &c., of its saws, notwithsanding the obstruction caused by the pressure-roll hangers being pivoted over the mandrel.

In making the changes from the apparatus in ordinary use, which we have devised for this purpose, we have approached in some features constructions previously devised, none of which, however, would serve the purposes we have had in view, and we havebeen compelled to devise the system as a whole, with all its parts and features mutually adapted to each other and to our purpose.

The machine has a general frame, A, which bears the several operating parts. The bed B has rollers O 0, arranged for the passageot' boards through the machine, saws D D D for cutting the boards, and rolls F F and G G for feeding and holding the boards.

The saws are circular, and are mounted on a mandrel, H, adjustably, so that any desired number of saws may be used, and so that they may be set any distances apart which may be required.

The saw-mandrel H is made with journalbearings of different sizes on its two ends. The journal H at the driving end is made the full size of the mandrel, so that it may be drawn out without removing bearing-boxes. The mandrel H bears a driving-pulley, I, on its end without an outer journal-bearing, which has its hub set to one side of its center, and has the box of the mandrel journal-bearing projected within it at the other side, so that the strain of the belt on the pulley will have little leverage beyond the box on the mandrel to press the lubricant out and cause friction. The mandrel H has keyway h cut in it between its journals for use in hold ing the saws, and. the outer journal, H, is made smaller than the mandrel, so as to let the projections or keys on the saw-holder collars pass into the slots h without cutting into the journal-surface. The end of mandrel H, beyond journal H, is made with a shoulder and of smaller size to receive a collar outside to hold it, which bears a pulley arranged to drive the feed-roller belt. These peculiarities relating to the saw-mandrel, while desirable for other reasons, are required by the peculiar arrangement of the pressure-rolls and their hanger pivot-frames, which prevent the mandrel and. its saws being taken off by upward removal, and the endwise'removal makes it impracticable to have an additional j ournalbearing outside of the driving-pulley, which renders the overhung pulley necessary to give it a firm support against its belt.

The feed-rolls F F are set on opposite sides of the saws, and have pressure-rolls G G mounted over them in frames K K, so as to be movable up and down to take and press upon the boards being sawed.

The frames K K are held by pivots at k k to brackets L L, which are at the sides nearly together in line with the center of the tops of the saws, above the level of the board-bed, so that the rolls G G may rise and fall nearly vertically to take and bear on the boards to be sawed.

Upright bars or rods mm are pivoted to the ends of framesKK and extend down to'crossbars M M, with which they form stirrupframes to control the rolls.

Ashaft, P, is mounted lengthwise under bed B, over cross-bars M M, and has a hand-wheel, R, on its end, within reach of the workman Who operates the machine. This shaft has chains S S, which connect from it to the crossbars M M, so that by turning the shaft the chains may be wound upon it and raise the stirrup-frames, and by them raise the rolls G G, so as to enable a board of any thickness to be caught by the feed-rolls under them, and so that, by turning the other Way to any degree after the boards are caught,the rolls G G will. be let down on them and hold them down on the feed-rolls.

The shaft 1? has a pawl-and-ratchet dog or holder, T, arranged to hold it at any position so that the rolls G G may descend to any desired point and rise above it by riding on the boards, but cannot drop below it when the boards have passed through, so as to keep the rolls up sufficiently to take the next board. This is adjustable to suit different thicknesses of boards, and a foot trip-lever, U, projects down, by which the dog may be thrown out by the foot.

The several parts are suitably made, ar- 40 ranged, and adjusted, and various modifications can be made and used.

We claim 1. An improved sawing-machine having an endwise-removable saw-mandrel and press- 5 ure-rolls, with hanger-frames pivoted nearly over the mandrel, and provided with stirrupframes and shaft and chain under the sawing apparatus, for operating them, substantially as set forth.

2. The presser-roll of a sawing-machine, combined with a Windlass-shaft, 1?, extending from the feeders position under the sawingbed, and provided with a chain or means of lifting, S, connecting with cross-head M, having uprights m at the sides, to lift or hold up the presser-roll to admit material to be sawed.

3. The Windlass-shaft P,under the bed of a sawing-machine, combined with a ratchet or other means for holding said shaft from rotating, and with a vertically-movable pre'sserroll, connected through bars m, cross-head M, and chains S, to hold the roll up to an adj ustable position, as set forth.

In testimony whereof we affix our signatures 65 in the presence of two witnesses.

SAML. S. VAIL. JAMES SOLLIDAY.

"Witnesses:

DANL. OLEARY, F. P. BARTLETT.

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