US557004A

US557004A - Radial drill

Info

Publication number: US557004A
Authority: US
Publication date: 1896-03-24
Anticipated expiration: 1913-03-24

Description

2 Sheets-Sheet 1.

(No Model.)

A. MILL.

RADIAL DRILL.

No. 557,004. Patented Mar. 24, 1896.

AN DREW EGRMMM. PHOTO-UTHWASHINtz-I'DNJC.

2 Sheets-Sheet 2.

(No Model.)

A. MILL.

RADIAL DRILL.

Patented Mar. 24, 1896.

I ANDRDN RGRAHAM.PNUU-UTHQWASMINGTDILD C UNITED STATES PATENT OFFICE.

ANTON MILL, OF CINCINNATI, OHIO.

RADIAL DRILL.

SPECIFICATION forming part of Letters Patent No. 557,004, dated March 24, 1896. Application nea May 2,1895. serai No. 547,906. oro model.)

To all whom it may concern,.-

Be it known that I, ANTON MILL, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Radial Drills, of which the following is a specification.

The object of my invention is, first, to provide, in a radial drill, the combination of a stationary bed and a revolving column, a rotary and radially-adj ust-able table which may be brought into use and set at any desired angle or thrown out of use, and a stationary table employed as desired.

Another object of my invention is to provide improved means for vertically adjusting the radial-drill arm.

Another object of my invention is to provide improved means for feeding the radialdrill spindle and throwing the same out of gear.

Another object of my invention is to provide improved means for changing the speed of the drill.

The features of my invention will be more fully set forth in the description Vof the accompanying drawings, making a part of this specification, in which- Figure l is a plan view of my improvement. Fig. 2 is a side elevation partly in section. Fig. 3 is an enlarged plan view of the mechanism for driving the drill-spindle and adjusting the drill-arm. Fig. 4 is a top plan view of the changeable gear for driving the spindle. Fig. 5 is a section on line y y, Fig. 4. Fig. G is a sect-ion on line .fr Fig. 4. Fig. 7 is a plan view of the clamping-ring. Fig. 8 is a central vertical section of Fig. 7. Fig. 9 is a sect-ion on line z z, Fig. 2.

A represents the bed-plate of the machine, the base of which forms a fixed table upon which the work may be support-ed.

B represents the main driving-shaft, which is provided with the usual bevel-gear meshing with the bevel-gear on shaft C and driving the same.

D represents a stationary column, upon which is supported the rotary column E and the sleeve-journal F for the adjustable table G. Said table G has an axial support upon the flange g of the sleeve F by means of the vertical flange f, so that the table G may be adjusted radially upon its center.

Gl represents a supplemental table supported upon the shaft' h, which journals 'in a bearing formed in the table G.

The table G and its sustaining-sleeve F are radially adjustable upon the upright stationary column D, which forms a journal-support for the rotary sleeve E.

J represents an adjustable bracket for supporting the outer end of the table G. This is made readily movable, so as to allow the ready adjustment of said table.

K represents a vertically and radially adjusting drill-arm. It is secured to the sleeve I, which is clamped upon the rotary column E, sleeve I being vertically adjustable upon the rotary column E and revoluble therewith.

The mechanism for driving the drill-spindle and for adjusting the arm K vertically is mounted upon the top of said column-sleeve E and is constructed as follows: 1 represents the main gear upon the shaft C. 2 represents a transmitting-gear mounted upon the same shaft. 3 represents a shifting-gear mounted upon the arm of bell-crank lever 4, which centers upon the vertically-adjusting screwrod 5 that engages with the thread of collar I'. 6 represents a transmitting-gear which meshes with and is` driven by the transmitting-gear 3, so that when the transmittinggear 3 is in contact with the gear 2 the screwrod 5 is turned and it adjusts the collar I and itsarm K vertically in one direction.

.In order to reverse the direction of the screwrod 5, I provide the following mechanisms: 7 represents a change-gear with which gear 3 is connected when the motion is to be shifted. Upon the shaft of this gear is mounted gear 8, which is in mesh with and constantly driven by gear l. When gear 3 is in contact with gear 7, it being in mesh at all times with gear 6, it transmits motion in the opposite direction to screw-rod 5. Shaft 9, on which gear 8 is mounted, likewise drives and transmits motion to the transverse shaft by the usual form of miter-gear, and this in turn drives the shaft L which drives the drill-spindle M by means of the changeable transmittinggears m n r s t, which are brought into mesh IOO alternately with the gear P of the drill-spindle M in the following manner:

Q represents a stud-shaft supported on the top of the head-stock R. To this shaft is pivoted the tumbler-plate S, upon one arm of which is mounted transmitting-gear s and upon the other arm the transmitting-gears t r. Then the parts are in the position shown in Fig. 4L, the `drill-spindle is driven by gears m tr P. Then it is desired to increase the speed, the tumbler-plate is moved so as to bring the gears sin contact with the gears n P, when the drill-spindle M is driven by the gears n s P. When in the position shown in Fig. 1, gear s is disengaged from gears n P, and when gears is in contact with gears n P the gears r t are disengaged from gears m P. In order to hold the said tumbler-plate S in any adjusted position, I provide the following instrumentalities: U :represents a segment which is provided with a series of notches with which the lug u of the adjusting-lever V is adjustably connected. A material advantage is obtained by the use of this changeable gear, as the speed of the drill may be changed without stopping the same. It has hitherto been customary to make the change through the main drivinggear; but by the construction of the headstock herein shown and by mounting the change-gear thereon the speed of the drill may be easily changed without stopping the operation of the machine.

If it is desired to stop the operation of the drill-spindle temporarily, the tumbler-plate S is moved so as to bring both gears r s oui of mesh with the gear P, and the lock-lever holds it in that position, instantly stopping the operation of the drill.

In order to furnish an automatic feed for the drill-spindle and means for throwing it out of gear automatically, I provide the following devices: Upon the base of the headstock I mount a feeding-shaft 7, which is driven by a belt from the spindle M. Y represents a clutch which forms a connection between the shaftW and loosely-journaled gear 10 upon the lower end thereof. Gear 10 meshes with and drives gear 11 on shaft 12, which also carries a hand-wheel 13, so that the said shaft may be turned by hand when the clutch is unshipped. 14- represents a worm on said shaft 12, meshing with the worm-wheel 15, which carries a pinion that meshes with the rack 1G attached to the sleeve 17, in which the drillspindle M journals. 1S represents a trip-pin placed on 011e side of the rack 1G andyertieally adjustable thereon so as to regulate the time of tripping. To throw out the automatic feed, this trip is adapted to come into engagement with the tripping-lever 19, which is in engagement with the clutch-head, so that when said lever is depressed by the contact of the tripping-pin with its front end the clutch is unshipped from engagement with its coaeting member and the feed thrown out of gear. Then in this position the drill may be fed vertically by hand-wheel 13.

It is very desirable to have the rotary column E rigidly held in position after the radial adjustment of the drill-arm is made. To aecomplish this I provide the following instrum entalities: Z represents a split ring which is grooved to fit upon dovetailed bevels formed upon the foot of the rotary column E and upon the base of the column II, so that when said split ring is drawn together by the clampingnuts 2O the rotary column is securely locked to the stationary column. The dovetail form of this connection is made for the purpose of more securely drawing the parts together, as it takes less strain upon the clamping-screws to hold the parts in this position than if the faces of the parts were plain; but either form is within the scope of my invention.

I claim- 1. In a radial drill, the combination with the column D, of the table G provided with the rotary column E journa-led on the base of the column I), the split ring Z forming a journalsupport for the revoluble column E, the driving-shaft C journaled within said columns, the adjustable drill-arm K journaling on the sleeve F, the threaded rod 5 engaging with said sleeve, and driving-gear mounted upon the top of said shaft D and rod 5, substantially as and for the purpose specified.

2. In combination with the drill-arm K the head-stock R laterally adjustable thereon, thc changeable driving-gear for driving the drillspindle journaled therein, consisting of the gears m, n, P, mounted upon the shafts L and M journaled in said head-stock, a tumblerplate S pivoted on said head-stock and carrying shipping-gears r, s, the feed-shaft W, the clutch Y operating feed-gears 10, worm 14, worm-wheel15 operating the rack 1G of shaft M, and the tripping-pin 18 and trippinglever 10 engaging the clutch Y of shaft W, substantially as described.

In combination with the head-stock R of a radial drill, the changeable driving-gear for driving the drill-spindle journaled therein, consisting of the gears m, n, P, mounted upon shafts journaled in said head-stock, a tumbler-plate S pivoted on said head and carrying shipping-gears r, s, t, a lever V pivoted to said tumbler-plate and carrying a lug a and a segmentU arranged on the head-stock and adapted for engagement by said lug to lock the tumbler-plate in its adjusted position, substantially as described.

In testimony whereof I have hereunto set my hand.

ANTON MILL.

Iitncsses W. R. Woon, C. 'f. MILES.

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