US592979A

US592979A - baetlett

Info

Publication number: US592979A
Authority: US
Publication date: 1897-11-02
Anticipated expiration: 1914-11-02

Description

(N0 Model.)

AgA. BARTLETT. REAMING 0R CUTTING TOOL.

Patented Nov. 2,1897.

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V SPECIFICATION forming part of Letters Patent No. 5952,91 9, dated November 231897.

Application filed June 28,

To all whom, it may concern:

Be it known that I, ARA A. BARTLETT, a citizen of the United States, and a resident of Cincinnati, in the county of Hamilton and State of Ohio, have invented a certain new and useful Beaming or Cutting Tool, of which the following isa specification. V

Figure 1 is an elevation showing the blades open; Fig. 2, an elevation showing the blades closed; F1 g. 3, an elevation viewing the blades edgewise. Figs. 4 and 5 are plan views showing the blades in open and closed positions, respectively.

On the stem or spindleo'are mounted cutting-blades Z). These may be of any desired number and shape. These blades are pivoted in a slot 0 in the stem in such a. manner as to be freely movablein a direction radially thereof. The location of the blades in the stem varies according to the nature of the In the present case they are shown as pivoted in the bifurcated end of the spindle. Sliding loosely on the spindle is a sleeve d, normallyhept in the position shown in Figs; by means of a spring e. The sleeve in this position inoloses the pivotal ends of the blades and holds them in closed position. In the position shownyin 1, the sleeve being pushed clear back, the blades are shown atthe extreme limit of their outward motion. The extent of such motion is governed by the length of the slot, which maybe varied to suit di-iiferent kinds of work.

is designed for cutting or reaming the surplus metal from the interior of soft-metal cast ornaments, such as are usedjor the ends 0t handles, poles, the.

The operation is as followsi The spindle is fixed in any device capable or giving it a rotary motion, such as a drill-chuck. The cast ing is planed so as to surround .the cuttertion.

tion. "sleeve returned to position by thehand. The 65 sleeve may be entirely omitted, in Whichease The particular form of cutting-tool shown 1897. Sensib e-642,606. (No model.)

no matter how irregular it maybe. The blades automatically assume the proper posi- As this trimming has heretofore been done largely by hand, it Willbe seenwhat a saving in time and expense I sin enabled to accomplish. The work is, moreover, better done than is possible by handwork or cutters heretofore in use. When the work is with drawn, the sleeve slides along the stem and the blades are moved automatically to the closed or inoperative position Various changes may be made in this construction without departing from invon- The Boring may be omitted and the it would be necessary to stop the rotary 1110- tion on the completion of ell-eh operation. The sleeve may be splined to the stem and the sleeve itself be clamped in the drillchuck, the stem being moved to allow the op-' eration of the knives. These variations are so obvious as to require no particular description or illustration.

It will be obvious that my invention may 7 be utilized in Work. on hollow Ware of every description, the shape and size of the cuttingbiades being varied to suit the particular work.

It will be noticed that the outward motion of the blades is limited in the first part of the operation by the sleeve itself, and it is obvious that bymaking the slot deepand the pivotal ends of the blades suliiciently long great variation of the movement of the blades 8 ispossible.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In a reaming or cutting tool, a stem or spindle, cutting-blades mounted on and freely movable radially thereof during the operation of the device, substantially as described.

2. In a reaming or cutting tool, a stem, cutting-blades mounted on and freely movable radially thereof during the operation of 9 the device, and means for controlling such action, substantially as described.

3.111 a reaming or cutting tool, a stem, cutting-blades mounted on and ireely mow able radially thereof during the operation of the device,

and means actuated by the feed of the work for controlling such motion substantially as described. "4. .In a reaming or cutting tool, a stem, cutting-blades mounted on and freely movable radially thereof during the operation of the device,

and automatic means for returning the blades to their normal position, substantially as described.

5. In a reaming orcutting tool, a slotted stem'; fcutting-blades freely pivoted in said slot, whereby as the stem is rotated the blades moveqradially thereof; substantially as described;

slot, and a sleeve sliding on said stem, where- V a reaming or cutting tool, a slotted stem, cutting-blades freelypivoted in said by the blades may be released from and also returned to normal positiomsubstantially as described.

7. In a reaming or cutting tool, a slotted stem, cutting-blades freely pivoted in said ARA BARTLETT.

Witnesses:

A. R. BETTS, WILL N. COMPTON.