US592943A

US592943A - Multiple drill

Info

Publication number: US592943A
Authority: US
Publication date: 1897-11-02
Anticipated expiration: 1914-11-02

Description

l(No Model.) I 4 Sheets-Sheet 1.

J. I. WARMAN.

MULTIPLE DRILL.

. No. 592.943. PatentedN0v..2,1897.

f v 'Mill/Hmm \-f gll/fllmllmm (No Model.) 4 Sheets-Sheet2.

` J,41. WARMAN.

MULTIPLE DRILL.

No. 592,943` Patented Nov. 2, 1897.'4

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f 4 Sheefs--Sheet 3. J. I. WARMAN.

MULTIPLE DRILL.

No. 592,943. Patented Nov. 2, 1897.

J. I. WARMAN. MULTIPLE DRILL No. 592,943. `Patented Nov. 2, 1897. L

UNITED STATES PATENT EEicE.

JOHN ICELY WARMAN, OF CHICAGO, ILLINOIS.

M ULTIPLE DRILL.

SPECIFICATION forming part of Letters Patent No. 592,943, dated November 2, 1897.

Application led Tune 25, 1896. Serial No. 596,844. (No model.)

T0 all whom, it may concern.-

Beit known that I, JOHN ICELY WARMAN, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Multiple Drills; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to multiple drilling-` machines of that class wherein a plurality of drill-carryin g spindles positioned at the same or at different angles are caused to move ra-j dially in an outward direction from a common center and simultaneously perform the op` eration of drilling.

The invention is illustrated in connection with a circular rim to be drilled; but it will be manifest without additional drawings that the invention may be applied for the purpose sired intervals from each other and whetherl the drilled holes be equidistant from a com'- mon center or not.

My invention, speaking in a general way, comprises a frame provided with a substantially horizontal table upon which the work is to be placed and means for securing the work thereon, the latter consisting of a plurality of chucks adapted to be simultaneously operated to move inwardly and thus center and secure the work. The frame is adapted to carry a pair of annular racks which respectively engage pinions upon the upper and lower sets of drill-carrying spindles, whereby the latter may be suitably and uniformly rotated, motion being communicated simultaneously to the two racks from a single driving-shaft. The ends of the drill-carrying spindles are arranged to bear against a centrally-placed movable wedge or cone, which at times is caused to move upwardly, and thus independently of the rotation of the drillcarrying spindles press the latter outwardly to their work. lThe feed cone or wedge is herein shown as being actuated from a footlever, there being a short link and universaljoint connection between the end of the lever and the end of a sliding shaft which actuates said cone.

A machine embodying my invention further comprises the usual bearings and connectin g parts, as well as means for adjusting to any desired angle the several drill-carrying spindles.

The invention consists in the novel devices and combination of devices herein disclosed, and it will be more readily understood by reference to the accompanying drawings and subjoined description thereof and by the claims appended hereto.

In said drawings, Figure l illustrates in plan view a machine embodying my invention. Fig. 2 illustrates 'a central vertical sectional view of the main operative parts of the machine, some of the parts being shown in elevation. Fig. 3 is an enlarged vertical sectional view of the main operative parts of the machine, the section being taken upon the line 3 3 of Fig. 2. Fig. 4 is also an enlarged view looking down upon the table and upon the lower rack, the section being taken on line et -l of Fig. 3. Fig. 5 is a vertical longitudinal sectional view showing the construc- -tion of one of the drill-carrying spindles and its adjustable bearing. Fig. is a side elevation of the adjustable bearing for the other drill-carrying spindles. Fig. 7 is a rear end view of the latter. Fig. 8 is a bottom plan view of the same. Fig. 9 is a'front end view of the sleeve on the drill-carrying spindle.

Fig. lO is a transverse sectional view of the second bracket A2 depends from the table a, 9 5

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with a driving miter-wheel A4. Motion is communicated to the shaft A3 in a familiar manner from any suitable source of power.

It will be noticed that in the form of the invention illustrated herein the table a is circular in general contour and has two main levels or elevations a6 al, separated by the vertical shoulder a2, The lower and inner table a carries the adjustable brackets for holding the drill-carrying spindles, while the outer or upper table a7 carries the chucks for holding the work. Beneath the section of the table a constituting the portion lettered a7 and at suitable intervals a plurality of projecting plates A4 are secured by means of bolts a2 or otherwise, said plates extending radially outward beyond the outer margin of the section a7 of the table a.

A ring B is positioned around the outer section of the table a and rests upon and is supported by plates A4. A handle B or other suitably projecting part is secured tothe ring B in any convenient manner, as by bolts b or otherwise, whereby the ring B may be moved bodily upon the several supporting-plates A4 and around the table a.

B2 is one of a series of movable or sliding chucks provided on its inner or engaging face with a cutaway portion, as shown at b, of any convenient configuration adapted for the work to be held upon the table-in this instance the concavo-convex rim C of an ordinary bicycle-wheel. The chuck is of such length as to extend beyond the section (t7 of the table d and outward over the ring B. Upon the section a7 of the table and at such points where it is desired to have a chuck located I provide a pair of guide-plates or strips b2, which may be secured to the table a7 by belts Z13 or in any suitable manner, and which afford a guide b4 wit-hin which the chuck B2 may move. The inner or guide faces of the guide-plates b2 will be positioned parallel with a radius of the circle upon which the ring B is described, so as to cause the chuck B2 to move in a radial line toward and from the center when it moves at all.

The outer end of the chuck B2 is provided with a vertical aperture through which a bolt B3 is passed, the lower end of the said bolt being provided with an enlarged head Zf and the upper end being provided with a nut h6, the latter being suitably located in a recess in the upper face of the chuck B2. The enlarged head b5 of the several bolts B3 are each positioned in an elongated slot B, extending vertically through the ring B, one slot to each bolt. It will be noticed particularly by reference to Fig. l of the drawings that these elongated slots are not concentric with the ring B, but are eceentrically arranged, whereby it will be obvious that upon moving the ring in either direction around the table a7 and upon the supporting-plates A4 the sides of the slots B4, engaging as they do the heads b5 of the bolts B3, have a cam movement and move the bolts B2 radially outward from or toward the center of the machine. Inasmueh as said bolts are passed through chucks B2 and the latter are so confined in the guides b4 as to have movement only in a radial direction, the chucks are thus moved in the desired direction with the bolts B2. Assuming the chucks, therefore, to be in the position illustrated in Fig. l, clamping the work to be drilled, a movement of the handle B toward the top of the figure or in the direction indicated by the arrow will simultaneously move all of the chucks outwardly and away from the work and thus enable the latter to be removed from the machine and a fresh piece of work placed thereon. It will be manifest of course that after the new work has been placed on the table a movement of the handle B in the direction opposite to that indicated by the arrow in Fig. l will cause the several chucks to simultaneously move inward and thus center and clamp the work upon the table preparatory to the operation of drilling.

I will next describe the drill-carrying spindles and the adjustable brackets for holding the same, referring more particularly to Figs. 4 to l0, inclusive, of the drawings.

The section a of the table a is provided with a concentric T-shaped recess or groove (designated as a whole by the letter D) comprising an enlarged lower portion d and a narrower portion d so arranged that the top walls of the larger portion d will constitute shoulders (Z2. At a convenientplaee an opening or aperture d3 is made which extends through the lower wall of the recess d to the lower surface of the portion a of the table, the opening being at least as large in diame ter as is the said portion (l in width, whereby a convenient means is afforded for the insertion of a bolt D', having a head d". After the bolt has been inserted through the aperture d3 until the shoulders on its head (Z4 engage the shoulders d2 of the recess l it may then be moved longitudinally into any desired position in the slot D. As manyot the bolts D' will be used as may be necessary for the purpose of securing the drill-carrying-spindle brackets E to the table Uf.

The brackets E each consist of two parts, a base e and an upper or journal portion e', the latter being provided, preferably, with a pair of upwardly-extending arms e2. The under surface of the base part c is flat, as shown in Fig. S, and is provided with a transversely-arranged rib es of such width as to nicely tit within the upper portion d of the slot or recess D, and thus prevent a longitudinal movement of the part C radially of or transversely with respect to the part a of the table a. A vertically-arranged aperture e" extends through the base part c and the rib c2, said aperture e4 being of a size sufficient to permit the bolt D to be passed therethrough. The upper surface of the base part e of the bracket E is concave or curved longitudinally, as clearly shown in Figs. 5 and and IOC ITO

it is provided with a rib or tongue e5, extending lengthwise of the base portion e, said rib or tongue being relatively wide, although not extending the full width of the base-plate e, as clearly seen in Fig. '7. The under surface of the journal or upper portion of the surface e is given a convex conguration corresponding with the upper surface of the base part e, whereby the two surfaces will perfectly register, a central longitudinal groove being cut in said under surface portion e, thus forming two projecting iianges e6, adapted to embrace the tongue or rib e5, that enters the groove between said flanges. An elongated slot or aperture c7 extends through said upper portion e', as indicated, for the reception of the upper portion of the bolt D', said bolt being secured in position by a lock-nut D2, which latter engages screw-threads upon said bolt and is crowded against a washer d5 on the part e adjacent to the said slot. The slot e7 extends on either side of the bolt D' for some considerable distance in a direction lengthwise of the bracket E.

It will be obvious that upon loosening the nut D2 the upper portion e' of the bracket E may be adjusted with respect to the lower portion e and the nut D2 again tightened, whereby the inclination or direction of the drill-carrying spindle may be suitably adj usted. In this connection it may be stated that the bracket E shown in Fig. 6 is of the same construction as that shown in Fig. 5, although the lower portion e is considerably smaller in size, it being more convenient to make these parts of different sizes where one set of brackets carries the lower drill-spindles and the other carries the upper drill-spindles. All the brackets may obviously be of the same size, if desired.

Each bracket-arm e2 is provided with any suitable journal-bearing arranged longitudinally of the bracket E,.for the purpose of supporting a drill-carrying spindle F. These spindles are provided at one end with any suitable style of drill-holding chuck f, in which the drills F' are removably secured. The chuck f acts as a shoulder to engage the face e8 of the journal-arm e2 and thus limit the longitudinal movement of the drill-carrying spindles F in one direction. Obviously, any suitable collar or stop upon the spindle may be used for the purpose, if desired. Near its other end the spindle 'F is provided with a groove or slot f', that extends lengthwise of the spindle. Surrounding `the spindle F is a suitable sleeve f2, havinga longitudinal opening therethrough, fequal in diameter to that of the drill-carrying spindle F, and provided with a feather or rib f4, projecting within said opening f2, adapted to fit with-in the groove f' of the spindle, whereby a longitudinal movement of the carrying-spindle F may be secured without obtaining rotary movement of the sleeve f2. The sleeve f2 is provided at one end with an annular iiange f5, adapted to engage the face e9 of the inner bracket-arm e2, and it is provided at its other end with a reduced but exteriorly screw-threaded portion f6. The length of the sleeve f2 is such that when its flange f5 engages the face e9 of the bracket-arm the threaded portion f6 extends beyond the other face @10 of the bracketarm. A bevel driving-pinion G is positioned partially upon the spindle F and partially upon the sleeve f2, it being secured to the latter by means of screw-threads upon the interior surface of a suitable recess engaging the screw-threads upon the portion f6 of the sleeve which exten ds into said recess,as shown in Fig. 5. One surface or edge g of the driving-pinion G is thus brought into contact with the face el@ of the bracket-arm e2. From this arrangement it will be manifest that upon rotating the driving-pinion G and the sleeve f2 rotary motion will be communicated to the drill-carrying spindle F by reason of the rib or feather f4 of the sleeve engaging the recess f' of said spindle. It will also be obvious that the drill-carrying spindle F may be moved toward its work and withdrawn therefrom-that is to say, that it may be given a longitudinal movement quite independent of its rotary motion.

I will now proceed to describe the mechanism for imparting rotary motion to the drillcarrying spindles.

The two arms of the bracket d' unite at their lower ends and support a vertically-arranged journal-bearing h, which supports a movable feed-bar I-I. Surrounding the feed-bar H is a tubular or recessed shaft H', which rests at its lower end upon the upper end of said j ournal-bearing h and at its upper end is provided with a circular driving-rack I, secured thereto by means of arms i'. The lower face of the driving-rack I is provided with teeth z", adapted to engage one of the sets of driving-pinions G. Rotary motion is communicated to the shaft H from the driving-shaft A3 by means of a bevel gear-wheel h', suitably secured, as by a key h2 or otherwise, to the lower end of the shaft I-I', the teeth of which bevel h' enga-ge theteeth of the driving miter-wheel A4. A bearing is afforded for the shaft H' by a suitable aperture through the lower portion of the curved bracket-arms h3, which latter terminate at their upper ends in laterally-extending flanges h4, by which the bracket-arms h2 are secured to the under surface of the plate a6 of the table by bolts h5, passing through apertures in the iianges h4 and into screw-threaded recesses in the table, or otherwise. The arms h2, Fig. 8, are positioned at right angles to the arms of the bracket a', Fig. l, whereby strength and rigidity to the structure as a whole are secu red.

A second drill-driving rack I', provided on its upper face with teeth 712, that engage one of the sets of drill-driving pinions G, is supported by bracket-arms 2 from a short sleeve 4, which surrounds the shaft H'. 'Io the lower end of this sleeve 4 is secured a bevel gear-wheel h6, adapted to engage the driving IOO IIO

. pins or trunnions Z.

miter-wheel A4. It will'be perfectly obvious that when rotary motion is communicated to the drivin g-shaft As from any suitable source of power the drill-spindles F and the drills carried thereby, will be suitably rotated through the medium of the gears A4 h h, the racks I I', and the several pinions G.

It will be understood that the clearance between the gears and racks will be suflicient to provide for the adjustment above described.

I will next describe the means employed for feeding the drills to their work. The mechanism employed for this purpose consists of a cone J, arranged to slide vertically upon the shaft II. rlhe inner end of each drill-carrying spindle F rests against this cone J, as indicated in Figs. l and 2, whereby it will be manifest that when the cone J is raised each of the spindles will be moved longitudinallyoutwardly-'z'. c., in a radial direction toward its work.

The mechanism for moving the cone J vertically to feed the spindles forward to their work is as follows: rlhe shaft II is provided with a central aperture o1 recess j and telescopes over the feed-bar Il, so that the latter may be moved longitudinally therein. The upper end of the feed-bar II is provided with an outwardly extending arm or nger y", adapted to pass through an elongated slot K7'2, that extends through the wall of the shaft II to the recess y'. The under surface or edge of the hub i3 of the cone J rests upon or is engaged by this arm or finger j. The shaft II having no vertical movement, it follows that when the feed-bar II is reciprocated therein in one direction-that is to say, is moved upwardly-the finger j' will lift the cone J and the latter will freely slide upon the shaft II, and it will be manifest that when the feed-bar II is ret-urned or moved in the opposite direction said cone J will return by gravity to its lowermost or normal position, as illustrated in Fig. 3.

Any suitable means may be employed for actuating the feed-bar II, but I prefer to use a foot-lever K, suitably pivoted at 7c and connected at its inner end with the feed-bar Il by a link K, the link having any suitable universal-joint connection with the lower end of the said feed-shaft. Surrounding a reduced portion Z of the bar II is a rotatable collar L, provided with outwardly-extending A bolt Z2 passes through the plate or washer Z3 and enters the lower end of the reduced portion Z of the bar II, and thus secures the collar L rotatably to the bar II. The upper end of the link K is bifurcated, the two arms 7s being provided with suitable apertures for the reception of the trunnions Z'. By this simple arrangement a universaljoint connection is formed. The lower end of the link K is also bifureated, its two arms 7a2 straddling the inner end of the foot-lever K and being pivotally secured thereto by pivot-bolts 7a3.

A cap K2 may be secured to the top of the shaft II by screw-threads or otherwise, as shown, and thus confine the bracket-arms of the upper driving-rack I in the proper position.

In operation, the cone J being in its lowermost position andthe chucks B2 being in their outermost position, the work C is placed upon the table and the handle B moved around in the proper direction to cause all of the chucks to simultaneously move inwardly and thus position and center the work. Pressure is then brought upon the foot-lever K, the cone J is thus raised, and the drill-carrying spindles are moved outwardly simultaneously to their work until the necessary drilling is accomplished, the shaft A3 rotating in the meanwhile. Upon releasing the pressure on the foot-lever K the cone J drops by gravity and the drill-carrying spindles F are moved inwardly by hand, so as to disengage the drills from their work. The chucks B2 are then moved outwardly by turning the ring B in the desired direction, and the work C is then removed frein the table, when it will be found that the desired number of apertures corresponding with the number of drills employed will have been made through the work and in the desired relation or angle to each other. The machine is simple, easily managed, not liable to get out of order, and requires little or no repairing. By its use work may be turned out with great rapidity, and particularly such work as the bored rings or tires of bicycle-wheels.

lVhile I have herein illustrated a desirable form of machine for embodying my invention, it will be manifest that many changes may be made therein without departing from the essential principle thereof, all of which changes or modifications I desire to be included in the scope of myinvention. Except, therefore, as they are made the subject of specific claims, I do not desire to be limited to the details of mechanism herein shown.

I claim as my inventionl. A multiple drilling-machine comprising a frame, a plurality of movable chucks thereon, means for actuating the chucks to engage and center the work, a plurality of adjustable drill-carrying spindles mounted on said frame, means for actuating said spindles and means for moving the spindles toward the work comprising a cam engaging the free ends of the same.

2, A multiple drilling-machine comprising a frame, a plurality of movable chucks mounted thereon, means for actuating the said chucks to engage and center the work, a plurality Ofdrill-carrying spindles mounted in adjustable brackets secured on said frame whereby the angle of the drill-carrying spindles may be adjusted as desired, means for actuating said drill-spindles and means for moving the same outwardly toward the work comprising a cam engaging the free ends thereof.

3. A multiple drilling-machine comprising IOO IIO

a horizontal table provided with movable work-holding chucks, means for simultaneously actuating the chucks to engage and center the work, a plurality of adjustable drill-carryin g spindles mounted on said table, carrying drills on their outer ends, means for actuating the drillcarrying spindles and means for simultaneously feeding the drills to their work comprising a cam engaging the free ends of said spindles.

4. A multiple drilling-machine comprising a horizontal table provided with movable work-holding chucks, means for simultaneously actuating the chucks to engage and center the Work, a plurality of adjustable drill-spindles mounted on said table carrying drills on their outer ends, meansfor actuating the drill-carrying spindles and means for feeding the drills to their work comprising a vertically-movable cam engaging the inner ends of the drill-carrying spindles.

5. A multiple drill comprising a substantially horizontal table provided with movable chucks, means for simultaneously actuating the chucks to engage and center the Work, a plurality of drill-carrying spindles, brackets for said spindles adjust-ably secured to the table whereby the drill-carrying spindles may be adjusted in a desired direction, means for simultaneously actuating the drill-carrying spindles, and means for simultaneously feeding the drills outwardly to their work, comprising a vertically-movable cone engaging the inner ends of the drill-carrying spindles, substantially as described.

6. A multiple drilling-machine having a table provided with a T slot or recess in its face and a plurality of drill-carrying-spindle brackets mounted on said table each consisting of a base and a spindle-support provided with a bolt-aperture therethrough and means for securing said parts adjustably together and to the table comprising a bolt engaging said slot and passing through the bolt-aperture of said bracket.

7. In a multiple drill, the combination with a ltable, of a compound drill-carrying-spindle bracket, the upper member of which is provided with bearings for-the said spindles, an

elongated slot extending through said upper member, a bolt-aperture extending through the lower member, the adjacent faces of the two members being tongued and grooved and the one being convexed and the other concaved, and a bolt engaging the machine-table extending through the said bolt-aperture and through the 4said elongated slot, a lock-nut on the free end of said bolt, and a head upon the other end of said bolt engaging the table, substantially as and for the purpose described.

8. In a multiple drill, the combination with the table of the machine, of a two-part drillcarrying bracket, a concentric or annular inverted-T slot in the table, a headed bolt engaging the said slot and extending through a suitable aperture in the bracket, a lock-nut on the free end of the said bolt, the under side of the lower part of the bracket being provided with a transversely-arranged rib adapted to engage the narrow portion of the inverted-T slot, substantially as described.

9. A multiple drilling-machine comprising a horizontal frame, two sets of radially-arranged drill-carrying spindles mounted thereon, each provided with a pinion, the spindles of each set rotating in dierent planes, means for rotating each set of spindles, and means engaging the inner ends of said spindles for simultaneously feeding said drills to their Work.

10. A multiple drilling-machine comprising a horizontal frame, two sets of radiallyarranged drillcarrying spindles mounted thereon, each provided with a pinion, the spindles of each set rotating in different planes, means for rotating each set of spindles, and a cam engaging the inner ends of said spindles for simultaneously feeding said drills to their work.

1l. A multiple drilling-machine comprising a horizontal frame, two sets of drill-carrying spindles mounted thereon, each provided with a pinion, the pinions of the respective sets rotating in dierent planes, a separate driving-wheel for each set of pinions, means for actuating said wheels, and a cam engaging the inner ends of the spindles for feeding said drills to their work.

12. In a multiple drilling-machine comprising two sets of drill-carrying spindles each provided with a pinion, the pinions of the respective sets rotating in different planes, up-

,per and lower circular racks engaging said pinions, the upper rack being connected to a shaft, and the lower rack being connected to a sleeve surrounding said shaft, means for imparting rotary motion both to said sleeve and said shaft, substantially as described.

13. In a multiple drill, the combination with a table provided with means for securing the work thereon, of drill-carrying brackets adj ustably secured on said table arranged to present the drills to the work at different angles, two sets of drill-carrying spindles having their rear ends in different planes, driving-pinions on each drill-carrying spindle, an upper and a lower circular rack adapted to engage the driving-pinions on said sets of spindles, the upper rack being secured to a suitable shaft provided with a miter-wheel, the lower rack being secured to a suitable sleeve surrounding said shaft, and also provided with a miter-wheel, a power-shaft, and a driving-wheel thereon, engaging said miterwheels, substantially as set forth.

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IIO

14. A multiple drilling-machine compris ing two sets of drill-carrying spindles each provided with a pinion, the pinions of the respective sets rotating in different planes, upper and lower circular racks engaging said pinions, the upper rack being connected to a shaft, and the lower rack being connected to a sleeve surrounding said shaft, means for imparting rotary motion both to said sleeve and said shaft, and means forsimultaneously feeding the drills comprising a eene longitudinally movable upon said shaft and having its outer surface in sliding engagement with the inner or free ends of the drill-Carrying spindles, a central aperture in said shaft, an elongated slot extending through said shaft and eommunieatin g with said aperture, a pin or finger seeured to said feed-bar passing through the slot in said shaft and engaging the lower side of said cone, and means for teleseoping the feed-bar within the shaft as desired, whereby the eone may be moved along said shaft and the drills be fed to their work, substantially as described.

l5. An annular multiple drilling-machine comprising a horizontal frame, a plurality of work-holding chucks mounted thereon, means for simultaneously aetuatin g said chucks to engage and center the work, two sets of radially-arranged, drill-Carrying spindles adjustably mounted on said frame each provided with a drivin g-pinion and eaeh set arranged to aet at a different angle, means for rotating said spindles simultaneously and means for simultaneously moving said spindles toward the work Comprising a cam engaging the inner ends thereof.

1G. An annular multiple drilling-machine Comprising a horizontal frame, a plurality of work-holdin g ehuelcs monn ted on said trame, means for simultaneously aetuatin g said ehueks to engage and center the work, two sets of radially-arran ged drill-carrying spindles adjustably mounted on said frame eaeh provided with pinions, the pinions of eaeh set rotating in dilerent planes, driving-gears engaging eaeh set of said pinions to rotate the same, and means for moving said pinions outwardly toward the work comprising a movable Cam engaging the inner ends thereof.

In testimony that I Claim the foregoing as my invention I affix my signature in presence of two witnesses.

JOHN ICELY TARMAN fitnessesz C. CLARENCE PooLE, TAYLOR E. BRowN.