US309073A

US309073A - Drilling-machine

Info

Publication number: US309073A
Authority: US
Publication date: 1884-12-09
Anticipated expiration: 1901-12-09

Description

(No Model.) 7 2 Sheets-Sheet 1.

P. G. MARCH.

DRILLING MACHINE. No. 309,073. Patented Dec. 9, 1884.

2 Sheets-Sheet 2.

(No Model.)

P. G MARCH.

DRILLING MACHINE.

Patented Dec. 9, 1884.

llnirnn Sra'rns A'rniv'r rrrcie.

PERRIN G. llIAItCI-I, OF CINCINNATI, OHIO.

DRILLlNG-MACHINE.

QPECIFICATIQN forming part of Letters Patent No. 309,073, dated December 9, 1884.

Application filed February 2, 1884. (No model.)

To (@511 whom, it may concern:

Be it known that I, Pnnnnv G. Manon, a citizen of the United States, and a resident of Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Drill-Presses, of which the following is a specification.

My invention relates to an improvement in drill-presses.

The object of my invention is to provide a table. capable of being adjusted radially, angularly, and vertically under the drill-tool, enabling radial, angular, and vertical drilling to be accomplished 'readily on the same machine. This I accomplish by the construction and combination of devices hereinafter described and claimed, reference being made to the accompanying drawings, in which Figure 1 is a side elevation of the drill-press with my improvement attached. Fig. 2 is a sectional plan on line 00 m, Figs. 1, 3, i. Fig. 3 is a sectional elevation on line 3 1 Figs. 1 and 2. Fig. etis a section of line 1 y, Fig. 2. Fig. 5 is a broken elevation of one section of the table arm or bracket. Fig. 6 is a broken sectional elevation on the two sections of the table-arm on line 00 .90, Fig. 2.

A represents thebase, B the pillar or column, Cthe drill-spindle, and D D E E, driving pulleys and gear, of an ordinary drill-press. A vertical rack-bar, F, is arranged looselyat the side of the pillar B, its lower end being supported by an annular shoulder, a, at the base of the pillar. The sectional arm carrying the work supporting the table is indicated at G G. The inner section,G,is provided with ahousing or box, 5 in which is journaled the pinion b, the rack F engaging said pinion and passing through the housing 9 between the pillar and the pinion.

Section G is attached to the follows:

0 cl represent disks cast on and with the sections G G, respectively, through which passes the axis H, forming the j ournal on which the section G may be turned for adjustment.

In order to prevent any lateral motion of the table supported on the section G,I provide an annular groove-bearing, e 2', formed on the periphery of the disks 0 (Z, as shown in Figs. 2, 5, and 6.

section G, as

I represents a circular Tgroove formed in the face of disk (1, to receive afastening-bolt, J which passes through a hole in disk 0, to which it is secured by a nut, j.

K represents an opening in the circular groove I, for the insertion of the head J of bolt J into said circular groove.

WVhen it is desired to move the section G, nut j is loosened so that the bolt will move with the disk 0 around in the T-slot. section G is made hollow or open for the purpose of lightness, as well as enabling the screws or nuts to be turned.

L represents a key or pin passed through the flange e.

it represents a series of holes pierced in the shoulder. i of disk 0.

The lines M represent gage-marks, which are used to indicate angles for adjusting the table. The pin L enters one of these holes is and holds the table momentarily until the operator can tighten the nut to secure it rigidly in position. These features may, however, be dispensed with and a setscrew employed for that purpose.

0 represents a table,which is secured upon the top of. section G in any desired manner. Whenever the table 0 is adjusted at an angle to the horizon,the center of the table is moved away from the vertical plane of the drill-spilt die. The inner arm-section, G, is divided at its rear, as atR, and the divisions are connected by a bolt and nut, 1%,(see Fig. 2,) in such manner that by loosening the nut the said armsection can be rotated radially or in a direction around the pillar B, and in such move ment it will carry with it the loosely-supported rack-bar F. \Vhen the required radial adjustment is obtained, the nut is tightened up, thereby clamping the inner arm-section on the pillar. In this way the sectional arm can be adjusted in a direction around the pillar to adjust the center of the work-supporting table into or out of the vertical plane of the drillspindle. The vertical adjustment of the sectional arm is likewise made by loosening the nut and bolt R and rotating the pinion b in the proper direction, aftenwhich the nut is tightened up to clamp the inner arm-section in its adjusted position on the pillar.

I may employ gearing to adjust the outer arm-section, G, angularly from a horizontal plane, in which event the pin L and holes k may be dispensed with.

I do not broadly claim a work-supporting table arranged beneath a drill-spindle and capable of vertical movement, an angular adjustment from a horizontal plane, and a lateral movementin a direction around the pillar carrying the drill-spindle.

Having thus described my invention, what I claim is p 1. The combination of apillar for carrying a drill-spindle, the inner arm section, G, encircling the pillar and adapted to be moved vertically and in a direction around the same, and having the circular groove I and annular bearing '6, the outer arm-section, G, centrally pivoted to the other arm-section by the bolt H, and having the annular bearing 6, the bolt J, connected with the outer arm-section, and having its head in the annular groove, and a work-supporting table on the outer end of the outer arm section, G, substantially as de scribed.

2. The combination, with a pillar having the vertical rack F, of the inner arm-section, G, carrying the gear b, engaging the rack and capable of adjustment in a direction around the pillar, the outer arm-section, G, swiveled to the inner arm-section for angular adjustment from ahorizontal plane, andawork-supporting table on the outer arm-section, substantially as described.

3. The combination of a pillar for carrying a drill-spindle, a rack, F, arranged vertically on the pillar, an inner arm-section, G, encircling the pillar, and having a gear, b,engaging the rack and capable of adjustment in a direction around the pillar, the outer armsection, G, carrying a work-supporting table, the pivot-bolt H,centrally connecting the two arm-sections, andthe annular groovebearing e andi at the outer adjoining edges of the arm sections, substantially as described.

In testimony whereof I have hereunto set my hand.

PERRIN G. MARCH.

\Vitn esses:

M. E. MILLIKAN, J OHN E. J ONES.