US1499680A - Drill attachment - Google Patents

Description

Jul 1, 1924. 1,499,680

- J. F. MOREHEAD DRILL ATTACHMENT Filed May 1925 wit? 1] bra kgad INVENTOR \MLKFN win- Patented July l, 1924?.

JAMES F. MO'REHEAD, OF W YTHEVILLE, VIRGINIA.

DRILL ATTACHMENT.

Application filed May 14, 1923. Serial No. 638,959.

To all whom it may concern:

Be it known that I, JAMES F. MORE- HEAD, a citizen of the United States, residing at VVytheville, in the county of Wythe and State of Virginia, have invented new and useful Improvements in Drill Attachments, of which the following is a specification.

This invention relates to an attachment for drills, the general object of the invention being to provide means for indicating whether or not the drill is held vertical so that an accurately positioned hole may be drilled.

Another object of the invention is to provide means whereby the device can be easily and quickly fastened to the drill.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described illustrated in the accompanying drawings and specifically pointed out in the appended claim.

In describing my invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a view showing the invention in use.

Figure 2 is an enlarged view of the device itself with parts broken away.

Figure 3 is a plan View of the device.

Figure 4 is a side view thereof.

As is well known, it is extremely difiicult for a machinist to drill a perfectly vertical hole with the hand drill as the bit will be moved from one side to another, as it is being operated. It is the object of my invention to provide indicating means for indicating whether or not the bit is being held vertical. Such means consists of a pair of casings 1 andQ which are connected together in such a manner as to produce a V-shaped body. Each casing has a slot 3 at its upper'end and a finger 4 is pivoted in each casing with its upper end bent'as at 5, said bent end extending through the slot. A wei ht 6 is connected with the lower end of eac finger so that the finger will act as a pendulum and when the device is held perfectly straight, the point 5 will be 0pposite a. mark 7 on the upper edge of each casing. Thus the operator can tell at a glance whether or not he is holding the drill vertical. The finger is provided with 'tubue lar member 8 through which the pivot pin 9 passes so that the finger is held against lateral movement. Straps 1O connect the outer edges of the casings together and set screws 11 pass through these straps and are adapted to engage the rod, which is shown at A, for detachably holding the device on the same.

From the foregoing, it will be seen that I provide simple means for permitting the mechanic to tell whether or not he is holding the drill vertical.

it is thought from the foregoing description that the advantages and novel features of my invention will be readily apparent.

I desire it to be understood that I may make changes in the construction and inthe combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claim.

Having thus described my invention what I desire to claim as new is A device of the class described comprising a pair of the casings connected together at their inner sides at right angles one to the other, each casing having a slot in its top with an indicating mark adjacent said slot, a weighted finger pivoted in each casing and having one end passing through the slot and adapted to register with said mark, straps connecting the outer sides of the casings together and set screws carried by the straps for engaging a drill.

In testimony whereof I afiix my signature.

JAMES F. MOREHEAD.

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