US593061A - Button-drilling machine - Google Patents

Description

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BUTTON DRILLING MAGHINB. No. 593,061. Patented Nov.2,1897.

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J.S.TARR. BUTTON DRILLING MACHINE. 10.593,061. Patented Nov. 2,1897.

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llNiTnn STATns FnTnivT @Trina JOSEPH S. TARE, OF CLEVELAND, OHIO, ASSIGNGB TO VILLIAM CLARK,

OF ERIE, PENNSYLVANIA.

BUTTON-DRILLING MACHINE.

SPECIFICATION forming part of Letters Patent No. 593,061, dated November 2, 189'?.

Application led February l1, 1897. Serial No. 623,006. (No model.)

To @ZZ whom t may con/cern.-

Be it known that I, JOSEPH S. TARR, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Button-Drilling Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as Will enable others skilled in the art to which it appertains to make and use the saine.

The invention relates to a machine for automatically drilling a plurality of holes in buttons. -The machine ncludesa plurality of chucks for holding the button-blanks, preferably one more chuck than the number of holes to be drilled in each button-blank, a plurality of rotating drills, one for each hole to be drilled, mechanism for presenting the buttonblanks successively to the action of the different drills, and mechanism for snccessively discharging the finished buttons from the chucks and for inserting buttonblanks into the empty chucks.

In the drawings, Figure lis a plan View of the machine. Fig. 2 is a front elevation thereof. Fig. 3 is a sectional side View on line 3 3 of Fig. l. Fig. 4 is a sectional side elevation on line Il 4. of Fig. l. Fig. 5 is an enlarged sectional view of onedlalf of the inachine on line 5 5 of Fig. 3, and Fig. 6 is an enlarged longitudinal section of the mechanism for feeding the buttons to the chucks.

Referring to the parts by letters, A represents the bed of the machine, at the ends of which are the two standards o. a, in which the operating-shaft B is journaled, and the tivo standards a' of, which support a non-rotatable cylindrical shaft C. This shaft C is a convenient practical means vfor supporting the various fixed and rotating parts, as hereinafter described, but it is not my intention to limit inyinvention to this particular means for supporting such parts.

D D represent twoiminovable plates which are secured upon this shaft C. These two plates support the adjustable bearings .g of the four longitudinallymiovable drill-shafts G, which drillshafts are parallel to each other and to the shaft C, and these plates also support the sliding plunger V, which forms part of the mechanism for automatically feeding the buttons to the chucks, which I will presently describe. These drill-shafts and plunger are approximately the saine distance from each other and from the axis of shaft C.

The bearings g for the drill-shafts are rectangular boxes set into holes d in the plates D D', and these boxes are moved to right or left or down by means of set-screivsg g2 g3, which set-screws also hold the boxes at the desired distance from the axis of the shaft C. The holes should be drilled in the buttonblanks at points equidistant from each other and at equal distance from the center of the button blank. These bearing boxes are therefore adjusted up or down or to right or left to bring the axes of the drill-shafts in line with proper point on the button-blank in the lchucks adjacent to said shafts. On each drillshaft is secured an operating-pulley g4, and each drill-shaft is surrounded by an expansible coil-spring Q7, the ends of Which bear against the bearings of the shaft in the plate D and against the hub of this pulley. In the ends of the drill-shafts are chucks for securing the drills therein.

J represents a plate which is mounted upon the shaft C, upon which it is adapted to slide, but is prevented from turning by a spline. Bolts j screw into this plate at points Where their heads will engage with the rear rounded ends of the drill-shafts. It is obvious that When this plate is caused to slide upon shaft C to the left, as shoivn in the drawings, these various bolt-heads will force the drill-shafts to the left in their bearings and that when this plate is retracted or moved to the right the springs surrounding the drill-shafts will nieve thein to the right.

Loosely mounted on the shaft B is a pulley K, driven by a belt 7n' from a counter-shaft, and a belt 7c, which passes around said pulley, likewise passes in a sinuous path around the four pulleys g4, which are attached to the drill-shafts, Wherefore all of the drill-shafts are simultaneously revolved, although two of them are revolved in one direction and tWo in the other. This makes no diiference, because the drills'uf'hich are used to drill the holes in the buttons will operate equally Well when rotated in either direction. The plate IOC J is caused to slide upon the shaft C by means of a fork-lever H, adjustably pivoted, to. the post d2, which rises from the bed-plate; Its front end bears against the right face of the plate J. The rear end of this lever carries a friction-roller 71 which bears against the face of a disk M, having on its face a camfm, which disk is secured to the shaft B. The shaft B is rotated by means of the pulley b, which is driven from a counter-shaft.

N represents a rotating disk which is mounted upon the shaft C, being prevented from moving along said shaft by the collar c and the hub r', which is fixed tothe shaft. On the side thereof which faces the drills are five chucks, arranged at regular intervals. This disk is rotated one-fifth of an entire revolution every time the shaft B revolves once by means of the notches n in the edge of said: disk, the pawl P, which isladapted to engage in said notches, and the crank ou the shatt B, to the crank-pin of which the rear end of this pawlk is pivoted.

rEhe button-holding chucks consist each: of an adjustably-iixed plate n', having a rig-htangled notch. in its inne-r end, which plates are secured to the face of the disk N by screwsfi, which. pass through slotsn in said" plates, and theI radially-movable correlative plate n2, having a right-angled` notch in its outer end. The button is held between the twdplates and in these notches. The platen2 is movably secured to the disk by screws nl, passing through slots a8, and it is movedradiallyfoutward by mea-ns of a coil-spring n4, whichsurrounds a shank n3 on its inner end. It is moved inward to release-the-button4 from the embraceof thechuek by means of a camshaped flange R, which engages with a triction-wheeln), mounted upon a pin n, which projects from the pla-te n2. This flange-R is secured tothe arm r, which projects outward from the hub r', which is fixed-to the-shaft G.

The means for automatically feeding the buttons intothe chucks consist of a sleeve T, which isv longitudinallyT movable` through a hole in the plate D and through another hole inthe boss r2 on the outer end of the arm r. Thediameter of the hole iin this sleeve is a trifie larger than the diameter of the buttons. A flat tube -S is secured upon the-end of this sleeve. It stands ina nearly vertical position, and, it is in open communication with'V the` interiorv of the sleeve, wherefore whenbuttonsare placed in this tube they will; fall by gravity into the sleeve. A plunger V is longitudinally movable in` thesleeve Tin whichy it lits, and in a suitable bearing in the plate D,and itsright-hand end passes through the plate J, and a coil-spring V surrounds this` plunger andi thrusts endwiseV against a nut o thereon and against the plate J, acting, therefore, to. move the plunger to' the left whenever the` plate J so-moves as toY permit su'chaction. A pin ft2, which is connected with the plunger, passes through a longitudinal slot t2 in the sleeve T. A coil-springt surrounds the left end of the sleeve and thrusts against the boss 'r2' and against the lian ge t: upon said sleeve, wherefore the sleeve is moved toward disk N whenever it can so move. Under normal conditions the right end of the slot t2 engages with the pin r2, which prevents for the time being any move- Ement in that direction.

The parts described operate in the following manner and sequence: Assume that a but- .ton is in the embrace of each of the chucks carried by disk N and that the drill-shafts have just been retracted after the drills have gdrilled-` holes in the buttons. The shaft B is constantly revolved, and it now operates the pawl P and causes the disk'N to be turned one-fii'th of arevolution. Fig. 3 shows these parts when the disk N is` about' midway between two stopping-points. W'hen the disk N reaches the position in which it should stop, a tooth w on thespringV engages with a notch asin the periphery of said disk. Beforel the disk reaches this point one of the friction-rollers ng, which is mounted upon a Ipin* projecting to the right from the plate n2, engages beneath the camfiiangel R. This lcauses the particular plate nawhich carries said roller to be drawn radially inward in opposition to its spring, the result being that 'the button which had been held between the `two plates n" 'n2Y is permitted to drop out. .This happens, as before stated, before the disk N reaches the position where it will stop. `Vhen it does stop, the opening between the lplates n' n2 of the now empty chuck is in `li-ne with the plunger V, as shown in Fig. 5. The buttons in the embrace of; the other Ach'ucks are. in line with the various drills. 'The continued revolution of shaft B causes the cam m of disk M to'engage with the friction-roller h on4 the lever Il, which causes said lever to rock upon its'w pivot, with the result of forcing the disk Jto theleft, whereby the fou-r drill-stems are moved so as to cause "their drills to drill holes in the several buttons. At the same time the plunger V is moved to the left by its spring V. As it so sleeve T to the left until its end strikes the plates n n2; AI further movement of the plunger V which follows pushes. the button in the sleeve out against the disk N and between the two jaws n/ athereby pushing thespring Z out. The cam My passes out of engagement with the friction-roller n, whereupon thef springs surrounding the drill-stems move said drill-stems, and consequently the disk J, to they righ-t.` Jfustv after this movement has begun and before it is quite completed the pawl P again begins toy move -the disk N. Almost immediately after this movement begins the roller'n) passes out of engagementA with the flange R, whereupon the .spring n4 moves the jaw n2 forward, andthe button is graspedv between the two jaws n n2, having been heldA inposition between them until it was so grasped by the end of the moves it permits the spring 15 to move the IOO IIO

sleeve T. The further backward movement of the plunger V brings the pin 'U2 into engagement with the end of the slot t2, whereby the sleeve T is retracted.

The movements above described are repeated indeiinit-ely, the result being that each button is successively presented to the action of each of the four drills and is iinally automatically released from the clutching-jaws. It will be noticed also that all four drills act simultaneously, each upon a different button, and that when they are drilling holes into the buttons a button-blank is being automaticallyinserted in the then empty chuck. The four drills are offset a very little and in different directions from the center of the button, wherefore the drills act upon four points cquidistant from the center of the button and at equal intervals apart. It Will also be noticed that the sleeve T is moved against plates n 'a2 and the button-blank is fed into the empty chuck by the action of springs, whereby the blanks, Whatever be their thickness, are firmly pressed against the disk N and between the plates n n2 Without danger of breaking any of the coperating parts. Y

The bolts j afford means for changing the normal position of the drill-shafts to compensate for the Wearing away of the drills. The adjustable fulcrum of the lever II, which may be secured at any point in the slot e, furnishes means whereby the throw of the drill-shafts may be varied as desired.

To insure the discharge of the button from 1 the chucks as they are opened, I secure upon the back of disk N five bent springs Z, whose ends project through holes uw in the disk between the plates n n2 and bear with a continuous, but light pressure upon the buttons between said plaies.

By adjusting the plates n' out or in the chucks are adapted to hold buttons of different sizes.

Having described my invention, I claimp 1. In a button-drilling machine, in combination,a rotatable ch uok-carryin g disk, mechanism for moving the same intermittently, a series of self-closing chucks supported at regular intervals on one face of said disk, mech-- anism for opening said chucks sequentially, a series of longitudinally-movable drill-shafts, springs for moving said shafts independen tly avvay from the Work, a button-feeding device consisting of a sleeve which is parallel with the drills and in line with the open chuck, and has an opening for the introduction of button-blanks, means for moving the same toward and from said chuck, a plunger movable in said sleeve, a spring for moving it toward the disk, a plate J for simultaneously governing the movements of the drill-shafts, feed-sleeve and plunger toward and from the disks, and means for moving said plate, substantially as and for the purpcsespecifled.

2. In a button-drilling machine, in combination, a plurality of longitudinally-movable drill-shafts, means for holding button-blanks in line therewith, lsprings for independently moving said shafts from the Work, a movable plate which simultaneously moves all of said drill-shafts tou-*ard the Work, adjustable bolts carried by said plate and engaging With the ends of the drill-shaft, a lever for moving said plate, an adjustable fulcrum for said lever, and a cani for operating said lever, suhstantially as and for the purpose specified.

In a button-drilling device, in combination, the disk II carrying on one face a plurality of equally-spaced self-closing chucks, mechanism for moving said disk intermittently, a plurality of longitudinally-movable drill-shafts, springs for independently moving said shafts from the Work, means for sequentiall)7 opening the chucks, a longitudinallymovable sleeve T, a vertical tube S which discharges button-blanks singly into the sleeve T, a plunger in sleeve T, the plate J, through which the rear end of the plunger passes, a nut on said cud, a spring V', the adjustable bolts j, a shaft B, and mechanism operated by said shaft for moving disk N and plate J, substantially as and for the purpose specied.

Li. In a buttoudrilling machine, the combination of a plurality of button-holding chucks, and mechanism for sequentially opening them and presenting the open chuck to the buttonfeeding mechanism, With button feeding mechanism consisting of a longitudinallymovable sleeve, an approximately vertical tube secured upon and discharging into said sleeve, a plunger in the sleeve and mechanism for moving the sleeve and plunger toward the open chuck to guide the button in the sleeve and force it into the open chuck and then WithdrauT said sleeve and plunger,

' substantially as and for the purpose specified.

5. In a button-drilling machine, the combination of a plurality of button-holding chucks, and mechanism for sequentially opening them and presenting the open chuck to the buttonfeeding mechanism, With button feeding mechanism consisting of a longitudinallymovable sleeve, an approximately vertical tube secured upon and communicating with the interior of said sleeve, a plunger in the sleeve, a spring exerting its force to move the sleeve toward the open chuck, a pin ou the plunger projecting into a longitudinal slot in the sleeve, a spring exerting its force to move the plunger forward, and means for retracting said plunger, substantially as and for the purpose specified.

6. In a button-drilling machine, in combination, a rotatable disk carrying a plurality of button-holding chucks each consisting of a fixed jaw, a movable jaw, a spring for closing said movable jaw, and a projection 'au on said jaw, and the friction-roller n, a plurality of longitudinally-mcvable drill-shafts, their operating mechanism, a longitudinally-movable button-feeding sleeve, an arm r in Which said sleeve is supported, a cam-liange R on IOO IIO

said` arm` forv engaging with the friction-roller wg, a spring for moving the sleeveftoward the open chuck, a. spring-actuated plunger for forcing a button from the sleeve into said open chuck, and means for retracting said sleeve, and plunger substantially as and for:

8. In a button-drilling machine, thefeomlbination: of an intermitten-tly-moving rotating disk, a plurality of button-holdingchucks earried thereby, a plurality of longitudinally'- movable drillshafts and their operati-ng mechanism the plates D and D/ havingholesd through themby which they surround said I drillfshafts, bearing-boxes gwithin said holes and embracing said drill-shaftsand set-screws v projecting through said plates intofsaid holes@ CZ and engaging with said bearing boxes,

whereby said bearing-bexesmay be adjusted in any transverse direction,Y substantially as and for the purpose specified.

In testimony whereof I affix my signature in presence of two witnesses.l

JOSEPH S. TARE.

Vitnesses E. L. TnURsToN, ALBERT H. BATES.

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