US531967A - It alf to george e - Google Patents

Description

4 Sheets sheet 2 (No Model.)

J. E. RAGHIELLES. STONE DRILLING MACHINE,

Patented Jan. 1,1895.

(No Model.) 4 Sheets-Sheet 3.

' J. E. RAGHIELLES.

STONE DRILLING MAGHINE.

Patented Jan. 1, 1895 I (No Model.) 4 Sheets-Sheet 4.

J. E. .RAGHIBLLES.

STONE DRILLING MACHINE.

No. 531,967. Patented Jan. 1, 1895.

' UhlllilllD S'rnr s PATENT @rrrcn.

JAMES EVE-ET RACIIIELLES, OF CHEROKEE, ALABAMA, ASSlGNOR OF ONE- llALF TO GEORGE E. BURBANK, OF SAME PLACE.

STONE=DRILLI NG MACHINE.

T ail whom it may concern;

Be it known that 1, JAMES Evnnr RACHIEL- LES, of Cherokee, in the county of Colbert and State of Alabama, have invented certain new and useful Improvements in Stone-Drilling Machines; and Ido hereby declare the following to he a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make to and use it, reference being bad to the accompanying drawings, which form part of this specification.

My invention relates to an improvement in stone drilling machines; and the object of the same is to simplify the arrangement and prove the operation of a multiple drill, both in the manner of rotating the drills and applying the strikes thereto; and a further object is to provide an improved means for ad justing the machine to the work in hand.

The invention consists in the novel features of construction, and in the combination and arrangement of parts which will be fully described hereinafter and claimed, and illustrated in the accompanying drawings, in

' which- Figure l is a side elevation of my improved machine. Fig. 2 is a vertical longitudinal sectional view of the same. Fig. 3 is a sec- 0 tional plan view. Fig. 4 is an end view. Fig. 5 is a vertical cross sectional view. Figs. 6, 7, and 8 are detail views of the knocker, head K and drill respectively. Fig. 9 is a sectional view on line 9-9 of Fig. 1.

A is the outer frame of the machine constituting a vertical guideway for the inner drill carrying frame 11. The respective frames are provided at their upper ends with cross bars a, b which are connected by vertical screw 0 40 for adjusting purposes. Journaled longitudinally in frame B is shaft D having gear (1 on one end which is engaged by propelling gear 6 carrying hand crank c. On the shaft D are the beveled gears E which mesh with 5 the correspondingly formed gears F fixed on short shafts G which have their inner bearings in cross bar H of frame B, and their outer hearings in arms 71. extending under shaft D as shown.

Bar H is formed with a series of vertical longitudinal recesses I in which the drills J atent No. 531,967, dated January 1, 1895.

Serial No. 500,899. (No model.)

are located and through which the short shafts G extend. Each drill is provided with a head K having the radial serrations k on its under side which are adapted to be engaged by the double wiper L in recess I in bar H, and which is secured so as to revolve with shaft G. lVhen the end of the knocker first engages the drill head it is near the center thereof but as the wiper continues to rise itis drawn 6o therefrom and being in engagement with one of the radial serrations the drill is partially turned as will be readily understood, as well as being raised from the bottom of the cavity being drilled. I

A series of hammers or strikes M is arranged over the drills, normally resting thereon, the same being secured to the outer ends of spring arms N which have their opposite ends secured to frame B. Each hammer has a projection m on its outer side for engagement with lifts O secured in regular succession to endless belts P, which latter at their lower ends encircle and are propelled by sprockets Q on shaft D, while the roller n is 7 5 provided for their upper ends. The lifts are arranged on these belts so that the hammers are raised and fall with accuracy and regularity. Reservoir Q, is provided from which lead tubes Q for conveying water to the sev- 8o eral drills.

For adjusting frame 13 automatically within frame A I provide the latter with the vertical racks B, one at each end. In the slotted ends of the bar H are the short shafts S, which 8 are adapted to move therein longitudinally with relation to the said racks by means of arms T leading inward from the upper ends of said shafts and connected to the lever U on opposite sides of its pivotal point. These shafts carry worm gears V for engaging said racks, and beneath said gears are the beveled gears WV Which engage similar gears in on shaftD. Thus it will be seen that when worm gears \V are in engagement with said racks 5 they will lower the drilling mechanism automatically as the operation continues, thus keeping the drills constantly at their work. Screw G serves to raise frame B and may also 1 be used for lowering the same when the worm 10o gears are not in operation.

My preferred form of drill is shown in Fig.

8 and consists of a stem having the radial blades J which' are V-shaped as shown. A drill thus constructed is peculiarly adapted for stone work.

At each end of frameA are the slotted and longitudinally expanding legs X which diverge from acommon securing point as shown andwhich are held in the desired adjustment, and from spreading by the cross brace 00. They are also connected to the frame side by the arm Y which holds the frame from oscillating. At the foot of each leg is a slotted weight Z for counteracting the tendency of the machine to vibrate.

The machine may be conveniently carried from place to place by handles a projecting from its four corners.

It will be observed that the knockers engage the drill heads just as the hammers are being raised, so that the two movements of the engaging parts do not clash.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. An improved drilling machine comprising a frame, a bar arranged therein having a series of longitudinal slots, wipers pivoted within the slots, drills movable vertically through the bar, heads carried by the drills having radial serrations on their under sides which are adapted to be engaged by the Wipers,

and means for rotating said shafts, and a strike mechanism for the drills, substantially as shown and described.

2. The combination of a fixed frame, a drill carrying frame movable therein, drills and a means for operating them, racks on the fixed frame, shafts carried by the movable frame which are adjustable toward the racks, Worm gears on the shat-ts for engaging the racks, a means for rotating the shafts, bars extending inward from the respective shafts, and a lever to which the said bars are secured to 0pposite sides of its pivotal point, substantially as shown and described.

3. The combination of shafts D, gears w thereon, oppositely beveled gears W, shafts S having the worm gears thereon, beveled gears on the lower endsot said shafts, each of said beveled gears engaging one of the gears W, and racks R engaged by the worm gears, substantially as shown and described.

4. A drilling machine provided with diverging legs X, cross bar a, brace arm Y, and

weights Z, substantially as shown and described.

In testimony whereof I aifix my signature in presence of two witnesses. t

JAMES EVRET RAOHIELLES. Witnesses:

J. E. DEAN, W. O. HOLESOPPLE.

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