US1102471A - Bearing for spindles for multiple drills. - Google Patents

Description

E. BUSGH.

BEARING FOR SPINDLES FOR MULTIPLE DRILLS.

APPLICATION FILED MAR.25, 1910. 1,1 02,471 Patented July 7, 1914.

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THE NORRIS PETERS CO.. PHOTO-LITHQ. V/ASHINGTON. D.

E. BUSGH.

BEARING FOR SPINDLES FOR MULTIPLE DRILLS.

APPLICATION FILED MAR. 25, 1910.

1,102,471 Patented July 7, 1914.

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tinrrn era PTNT @h lillmEt EDWARD BUSCH, OF DAYTON, OHIO, ASSIGNOR TO THE NATIONAL AUTOMATIC TOOL COMPANY, OF DAYTON, OHIO, A CORPORATION OF OHIO.

BEARING- FOR SPINDLES FOR MULTIPLE DRILLS.

LIOZAWL Specification of Letters Patent.

Patented July 7, 1914.

Application filed March 25, 1910. Serial No. 551,520.

To all whom it may concern Be it known that l, EDWARD Busorr, a citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Bearings for Spindles for Multiple Drills, of which the following is a specification.

This invention relates to improvements in adjustable tool holders and may be used as an attachment to multiple drills and particularly relates to the adjustment of the drill holders and is adapted to insure a more perfect alinement of the drills and a better method of maintaining drills in their true vertical position than any heretofore known or used.

Referring to the drawings: Figure 1 is a side elevation of the machine. Fig. 2 is a central longitudinal section of the drill and its bracket and support. Figs. 3, 4i, 5 and 6 are detail views of the bracket and drill support.

Like parts are represented by similar letters of reference in the several views.

Referring to Fig. 1, the bracket or rail, indicated by a, projects from the frame of the drilling machine and is adjustably supported in the usual and well known manner by having a slot a (see Fig. 5) formed in the body of the rail and the bolts a (see Figs. 1 and 2) are adapted to hold said rail securely to the frame A of the machine. These bolts a are formed with the ordinary heads a which are adapted to fit within grooves or ledges a formed in the frame A and the shank of the bolts a project downwardly extending through the slot a in the body of the rail and nuts are then fitted onto the shank of the bolt for holding the rail a in any adjusted position, it being apparent that the rail can be adjusted to the desired position, and by tightening the nuts a said rail or bracket can then be held in that adjusted position. This improvement relates more particularly to the means of connecting the drill support with said rail or bracket. There is preferably formed in one end of the rail a socket b which is of inverted T-shape and within this socket there is adapted to be fitted the drill support 6 (see Figs. 3 and 4:). The shank of the drill support I) is formed in the shape of a T-rail such that the head and web portion will be slidably mounted and dove-tailed within the socket b. The free end of the drill support is formed with a bearing Z2 for the spindles If. In assembling the parts, the drill support I) is placed above the socket 7) such that the lower edge of the web and head of the support may be forced into the socket, the support being thereafter slid downwardly until the drill is in proper position for its work. The slots 0 and 0' preferably extend through the web portion of 'the drill support and openings 0 extend through the side wall of the socket b so that the bolts 0 (see Figs. 1 and 2) can be inserted in the openings 0 passing also through the slots 0 and c. There is preferably shown four openings extending through each wall of the socket Z), so that four bolts may be employed in securing the drill support securely within the socket of the rail or bracket. The rail or bracket may be made of any suitable material such as cast steel and by tightening the bolts 0 the support I) can be clamped in any desired position within the socket Z). It is obviously desirable to form the socket and drill support such that a fairly tight fit will be made between the two parts and yet permit a slidable adjustment of the drill support within the socket.

The spindle b is iournaled in the bearing if in the manner clearly indicated in Fig. 2, though any usual or ordinary construction may be employed. Some of the principal advantages of this construction are that the bracket or rail a can always be adjusted to such a position that the rear wall of the socket 7) will occupy a perfectly true vertical position and then by sliding the support Z) within the socket and applying bolts 0 and tightening same until the drill support 6 is driven to a position that the rear wall of the drill support will fit tightly against the rear wall of the socket, the parts will then be securely held in proper and desirable alinement. It is for this reason desirable to form the drill support so that the connective wall or edge between the web and the head is slightly tapered or inclined and the socket formed of similar shape whereby the pressure exerted by the side walls of the socket, whenever the bolts 0 are tightened, will force the drill support rearwardly into proper alinement with the rear wall of the rail or bracket.

As appears clearly in Fig. 1 the usual flexible shafts are connected to the spindles 72 thereby transmitting the power to the drills.

Having thus described the invention it is claimed as follows:

1. The combination of va rail, means for supporting the same, one end of said rail being provided with a socket having resilient side Walls, a drill support, a shank on said support extending into the slotted opening of said rail, and means extending transversely across said'socket for releasably clamping the resilient side Walls of said rail socket to said shank. s

2. The combination of a rail, means for supporting said rail, one end of said rail being provided with a dove-tailed socket having resilient side Walls, a drill support, said support having a shank shaped to conform to said socket and fitted therein, and means Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patent-s,

for releasably clamping the sidewalls of said rail socket to said shank.

. 8. The combination of a bracket or rail, a stationary frame, means for adjustably securing said bracket to said frame, one end of said bracketloeing provided with a socket having resilient side Walls, a drill support, the shank of said support being formed With slotted openings, the side Walls of said socket having a plurality of openings, and means extending through the openings in said side Walls and said support for clamping the side Walls against said shank of said I support.

In .testimonv whereof, I have set my hand i this 15th day of'March. a

a EDWARD BUsoH.

Witnesses:

P. N. SIGLER, EyG. DENLINGER.

Washington, I). e.

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