US599551A - oolbubn - Google Patents

Description

3 Sheets-Sheet 1.

(No Model) L. H. GOLBURN. UPRIGIIT BORING AND TUNNING MACHINE.

Eagnted Feb. 22, 1898.

3 Sheets-Sheet 2,

L. H. COLBURN. UPRIGHT BORING .AND TURNING MAHINE. ,551 Patented Peb. 22, 1898.-

(N0 Model.)

JNVENTUR.

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3 Sheets-Sheet 3.

(No Model.)

' L. H. COLBURN. UPRIGIIT BORING AND TURNING MACHINE. No. 599,551.

'Patented Peb. 22, 1898.

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UNITED STATES- PATENT OEEICE."

LESLIE H. OOLBURN, OF TOLEDO, OHIO, ASSIGNOR OF ONE-HALF TO HERBERT BAKER AND ARTHUR E. BAKER, OF SAME PLACE.

uPRIGI-I' BORING AND TURNING MACHINE."

SPECIFICATION forming part of Letters Patent No. 599,551, dated February 22, 1898.

Y Application iiled July 39, 1897. Serial No.'646,499. (No model.)

To all whom t may concern:

Be it known that I, LEsLIE H. OOLBURN, a citizen of the United States, residing at Toledo, in the county of Lucas and State of Ohio, have invented certain new and useful Improvements in Upright Boring and Turning Machines; and I do hereby declare the following to be afull, 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 same.

My invention relates to improvements in what are known as upright boring and turning machines.'

The objects of the said invention are, iirst, toaiford improved facilities for simultaneously boring and turning small machine parts, such as sprocket-wheels, gear-blanks, gear-Wheels, dac.; second, to produce a machine capable of various combinations, to the end that a great variety of shapes and sizes can be operated upon and the character of the operations changed to meet the requirements, and, third, to so construct the machine that most of the oper/ations are automatic and by means of stop devices to so regulate the various feeds that the parts finished on the machine will be interchangeable. I attain these objects by the mechanism illustrated in the accompanying drawings, in which Figure 1 isaside elevation of the machine. Fig. 2 is a side elevation of the entire machine viewed on the'opposite side from Fig. 1. Fig. 3 is a front elevation of the entire machine. Fig. 4 is a section on line A, Fig. 1, showing the head B with extension-arms B". Fig. 5 is a section on the same line,

showing'the head without the extensions B.`

Fig. 6 is a side elevation of the tipping-box O. Fig. 7 is a view showing the top of the tipping-box C. Fig'. 8 is a cross-section of the clutch mechanism for throwing in and .out the automatic feed for the spindle D.

Fig. 9 shows the automatic stop mechanism for regulating the depth of the feed of the upper spindle. Fig. 10 is a cross-section of the main frame of the machine on line E, Fig. 2, showing a part of the main driving mechanism for lower spindle F. Fig. 11 is a side view of the gear-case which traverses on shaft L. Fig. 12 isa front view of the same. Fig.

`13 is a sectional view on line 6, Fig. 2, showing the slide with holder for supporting the angularly-adjustable cutters G. Fig. 14 is a sectional view of a chuck specially adapted for holding a bicycle sprocket-wheel while being operated upon. Fig. 15 is a top view of the chuck with sprocket-wheel secured in the same. Fig.v16l is a view illustrating a bicycle-sprocket apart from the operating-clutch. Fig. 17 is a sectional view of the upper driving-gears II H', showing pin for locking gear H in position. Fig. 18 is a sectional View of the end of upper spindle D', showing cylindrical cutter and steadyin-g-pin. Fig. 19 is a sectional view of the lower spindle F. Fig. 2O is a side elevation of the bracket g, which supports the worm-shaft f.

Similar letters refer to similar parts throughout the several figures of the drawings.

The main frame I is preferably made in one piece, with outwardly-projecting bosses,

to which are secured the separable parts 0f the machine, including the several extensions or supports for the running parts. One of these extensions is the bracket M at the rear of the machine. Supported in the said bracket M is the counter-shaft M, fitted with tight and loose pulleys at one end', (one of which is shown at m,) at which point by suit- Aable belting the power for driving the Whole machine is applied. The object of placing the counter-shaft in this position is to allow a number of machines to be belted from one driving-shaft and yet be independent of the others in starting and stopping. A beltshifter m is provided,which is operated from a convenient point at the front of the machine by means of the shaft u and hand-wheel u. Another of these extensions is the bracket L. lSupported in a bearing in said bracket L at one end is' the main driving-shaft L', carrying the cone-pulley L. This shaft is supported at the other end by a bearing on the bracket M and is connected by the bevelgears M M with the counter-shaft M'.

On the front of the frame I is fastened a knee or bracket I. This bracket is bored out for the reception of the lower spindle F and should be in perfect alinement with the upper spindle D.

To the lower end of the spindle F is secured the large bevel-gear F. Engaging with this gear` is a bevel-pinion F", which is secured to the end of shaft E', deriving motion from main shaft L'. Said shaft E' is fitted in suitable bearings E", integral with the main frame, and E'" in lower portion of bracket I', as shown in Fig. l0. Fastened to the shaft E' is a spur-gear J, engaging with pinion J', secured to intermediate shaft J", which is supported in suitable bearings, as shown. Rigidly fastened to the shaft J are several gears K K K.

The gear-case lT (shown in detail in Figs. 1l and 12 and connected in Figs. 2 and 3) has three bearings on each side for the studs N' and N" and shaft L. The driving-shaft L passes through the case, as shown in Fig. 3, and the case is free to move longitudinally on the shaft. Between the two sides of the case is a pinion O, which is keyed to the shaft L and adapted to slide on the same with the gear-case, the shaft having a spline along its length for the purpose. The pinion O meshes with the pinion O on stud N', and this in turn meshes with another pinion O" on stud N". By grasping the lever P and releasing the spring locking-pin P and lifting the saine in the direction of the arrow P" the pinion is disengaged from one of the three gears K, K', or K, and by sliding the gear-case along the shaft engagement can be made with any of the other gears on shaft J". It is obvious that this will change the speed of the spindle F and allow a quick change from one speed to another to be made at any time.

To the upper portion of the main frame I is secured the head B, Fig. 1. Vhen it is not desirable to have the upper spindle revolve, a head without the extension-arms B" B" is used, as shown in Fig. 5, and in this case a solid spindle D is used, the rack being itted to or formed in one side. Vhen, however, the revolver boring-spindle is used, the part carrying the rack is made as shown in Fig. 4, with a perforation through which the said revolving spindle passes, as shown in Figs. 2 and 3. These parts are interchangeable.

The pinion Q,fltted to the stud Q', engages the rack D", and by means of the mechanism which will be hereinafter described the spindle D is moved downward toward the lower spindle F. On stud Q' is secured the worm gear-wheel Q", which is engaged with the worm Q'", as shown in Fig. l. To the hub of worm-gear Q" is fitted the adjustable stoplever R, which is adapted to be clamped in tny position on the periphery of the said gearlub.

Pivoted on a stud R' is the divided trip-lever R". The said lever R" has an extension R'", which is adjustably secured to it in any desired position by means of a clamping-bolt T, passing through the slot T. On the part R of the lever R" is a notch T". Pivoted at S is a lever S', having a handle at its lower extremity, and an extension S, as shown in Figs. l and 9. When the lever is in the position shown in Fig. l, this extension S" comes in contact with a lug underneath the tippingbox C and keeps the worm Q" engaged with the worm-gear Q". Vhen the lever S' is in position to engage the worm Q'" with the gear Q", the upper end of the said lever is held in position by the notch T.

C is a tipping-box frame pivoted at one end on the shaft V'" and held against the frame of the machine by means of a bolt or stud y, which passes through the slot y'. This slot does not clamp the tipping-box frame tightly' against the frame of the machine, but merely acts to keep it pressed against the same and leaves it free to fall when the supporting-lever S is disengaged, as described.

The worm revolving in the teeth of the gear Q" causes the spindle to feed downward in the direction of the arrow T". The adjustable lever R having previously been set at the proper point, when the spindle has reached its proper amount of downward travel the lever R engages with the end of lever R" and lifts it until the upper part of lever S is disengaged from the notch T". This allows lever S to fall backward, as shown in Fig. 9, and the worm Q'" becomes disengaged from the worm gear, thus stopping the feeding movement of the spindle D. A quick return can now be given the said spindle by grasping the lever U' and turning the pinion Q by hand until the spindle reaches the proper height. This return movement also carries the adjustable lever R back to its position, and in so doing the lever R'" falls from the position shown in Fig. 9 to the position shown in Fig. l against the pin U, which holds it in proper place. To engage the automatic or power feed again, it is only necessary to grasp the handle on lower part of lever S' and throw it back into position from that shown in Fig. f) to that shown in Fig. l. By this movement the end of lever S raises the lever R" momentarily until the point of lever S reaches the notch in extension l when the latter falls again and locks lever in position, thus keeping worm Q'" securely engaged with gearwheel Q" until released.

The worm-shaft U" (shown in Figs. l, 8, and 9) is supported at the hand-wheel end in two bearings, one on each side of the worm, and at the other end it passes through a sleeve U", which is supported in the box or bearing V. One end of sleeve U" at V', Fig. 8, is made in the form of a clutch, having teeth cut crown fashion on its end. The other end is in the form of a bevel-gear and engages with a similar gear V" on a shaft V", which passes through the frame of the machine. A clutchcollar lV, having teeth cut crown fashion to engage with the teeth on V', has a sliding fit on the shaft U" and is adapted to drive the same through the medium of the spline or feather W'. A lever W", having projections engaging With this clutch-collar in a groove cut in the same, is adapted to throw the said IOO IIO

collar out of and into engagement with the sleeve U'". in Figs. 1 and9, the automatic feed causes the worm Q' to revolve and feed the spindle' D. When it is thrown out, as in Fig. 8, the automatic or power feed is disengaged and the spindle is fed by hand through the medium l V" derives its motion as follows: On the opposite side of the machine, Fig. 2, on-the end of shaft V'", is a worm-gear X. On the end of the worm-shaft X" is a pulley X'", which is driven b y a belt from a-pulley above.

On some classes of work it is preferable to have a revolving upper spindle in place of the non-revolvin g spindle just described. In order to readily adapt this type of machine for either the revolving or the n on-revolving spindle without changing the general construc-4 tion certain provisions are made. The main frame is formed at its upper'extremity with a groove Y planed in it, and the interchangeable heads B and B'have tongues adapted to fit the said groove. groove are planed in exact parallelism with the spindles, upper and lower, thus placing the head in correct position to bring the said upper and lower spindles into perfect alinement with each other.

When itis desired to use the solid or nonrevolving spindle, the head B', as shown in Fig. 5, without extensions B" B", is used. When it is desired to use the revolving upper spindle, the head B, with the extensions B" B", is used. This style of head is shown in Figs. 2, 3, and 4. The feeding is exactly the same as that used for the non-revolving spindle; but in this case the part which carries the rack has an aperture to receive the revolving spindle. When. large holes are to be bored that are nearer the diameter of the outside-as, for example, in a detachable bicycle-sprocket, as shown in Fig. 16-the nonrevolving spindle can be used, as the difference between the cutting speed at the bore and on the outside will not be great. When, however, small'holes are to be bored and the y outside turned at the same time, the 4difference in the cutting speed of a cutter working at the periphery, where it may be seven inches in diameter, and that of a drill or boring-tool working on a diameter of one inch would be too` great, and it would be necessary to accelerate the cutting speed of the boring-tool or drill, and this is accomplished by revolving the upper spindle in the opposite direction from that of the lower spindle. For driving the said revolving upper spindle the upright shaft Y' is fitted in suitable bearings in the extensions B" B". This shaft carries the bevel-gearY"and pinion H. The said pinion H engages with the large spur-gear H', which drives the spindle D', in the manner illus- When it is in the position shown` The said tongue and `trated in Fig; 17. The gear H has a long hub of its rotation without regard to the position of the spindle, up or down. V

Engaging with bevel-gear Y" is a bevel-gear Y'", secured to shaft Z'. This shaft is supported in bearings Z Z'" and a bearing on the end of arm a and carries a cone-pulley a', which is the main drive-pulley for the shaft;

also, a small cone-pulley a" for driving the feed mechanism. Pulley a' is driven from pulley L", and pulley a" drives pulley X'" by 'means of suitable belts.

Should it at any time be .'desired to use the machine for heavy boring, counterboring, or facing and have the spindle D'stationary for this purpose, it is only necessary to removethe pinion H from the shaft Y and lock the gear H' in position rigidly by means of the locking-pin b, Fig. 17. There is an aperture or recess h' in the gear H', into which the pin h fits closely. Said pin is held in position-in a lug b", and when it is not in use it is unscrewed, so as not to engage with gear H'.

It is obvious that the modification just described has all the desirable functions of that shown in Fig. land other useful features besides, as enumerated. When it is not desired to employ the' drill-press features, the head B', Fig. 5, will be used, and arm a, bearings Z" and Z'", shaft Z', with its pulleys a' and a", gear Y'", upright intermediate shaft Y', with`its gears Y" and H, will be dispensed with, giving the form of the machine shown in Fig. 1. be useless and should be removed andfeedpulley ct" put on in'its place. The small conepulley X' is then placed on the opposite side of the bearings, and the worm-shaft X" may be made reversible for that purpose. It will then be possible to drive the feeding mechanism directly from the shaft L'.

The lower spindle'F is preferably made hollow, as shown in Fig. 19. It is threaded at d, Fig. 19, to receive a chuck, as shown in Fig. 14. The upper portion of the hollow part of the spindle F is enlarged for the receptionof different-sized bushings, as shown at d'. The lost motion in F is designed to be taken up by the nuts d" d". Upon the top of bracket I', Fig. 3, are fitted two slides e and e', Figs. 3 and 13. The slide chas power or automatic feed attachment, while slide e is usually made to feed by hand alone, although power feed can be attached, if desired. The feed-screw e", Fig. 3, is fitted into the plate e'", which holds it in position. The threaded portion of e" fits into the nut f, Fig. 13, which is attached to the slide e. 0n the end of the feed-screw e" is the worm-gear f'.- On shaftf" is a worm f'" and cone-pulley g.

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The pulley L" in such case will l IIO The shaft f is held in position by two bearings g and g. Bearing g is pivotally attached to the bracket g", as shown in Figs. 1 and 20. The other end of the shaft is supported in bearing g". This bearing g is held against the plate c'" by a bolt h. Said bolt does not clamp the bearing or box g tightly, but merely keeps it snugly against the plate, leaving it free to drop in the direction of arrow 7L when the catch 7L is released. A slot i', Fig. 1, in the plate 6 allows the box g to fall only enough to let the teeth of the wormgear f to become disengaged from the worm f which stops the automatic feed of the slide e. The bolt h passes through the slot t'. The slide e is provided with an automatic stop mechanisln. (Shown in Fig. The catch-lever h" is pivoted to the plate 6" and one end is notched to support the box g with the worm engaged with the worm-gear. Lever j is pivoted to the bracket I', andthe two levers j and 7L" are connected by means of the straight link j. A spring 7c, secured to lever j and to a pin 7c', acts to keep the catchlever h" in position, as shown, with worm and gear engaged. The slide e has a lug k", in which is fitted the screw for adjusting precisely the time of trip. As the slide feeds toward the spindle F the screw 7c, having been previously adjusted, comes in contact with lever j and causes the catch-lever 7L" to recede from the box g until the same is unsupported, when it falls the length of the slot c', Fig. 1, and the worm disengages from the gear, thus bringing the slide e toa stop. The slide e can then be quickly brought back to the starting-point by means of a handle l, which is adapted to fit over the end of feedscrew e. To throw the automatic feed in again, it is only necessary to lift the wormshaft f upward by means of the handle m until the worm enga-ges with the gear at the proper depth, when the spring 7c, will pull the end of the catch-lever h" under the box g" and lock the worm and the gear together. The feed now continues until automatically thrown out again, as just described. The other slide e is operated in a similar manner, except that the automatic feed and stop are not used. On each of the slides e and e is fitted a screw-stud n, as shown in Fig. 13. This is threaded at n and iitted into c. The upper portion is attened or made square, so that it can be turned easily up and down. The jam-nut n" locks it in any position when set. The cutter G' rests on a shoulder n" and can therefore be adj usted up and down in the direction of the arrow o. The nut o' clamps the cutter in position, so that it cannot turn around. These cutters may be of various shapes suited to the work in hand. The one illustrated is for turning bicycle sprocket-wheels. The object of having two cutters is that the cutter which is fed automatically is generally used to rough the piece out and the one which is fed by hand is generally used to merely take off the last or iinishing cut.

The shaft p, Figs. l and 3, is supported in bearings p 1). It carries a spur-gear p and a cone-pulley 29. The gear p" engages with and is driven bythe large gear J. The conepulley 19" is belted direct to the cone-pulley g, and thus communicates power for the feeding mechanism from the central drivingshaft E.

For boring out the work various styles and shapes of cutters may be used, depending upon the character of the work in hand. Fig. 18 illustrates a cutter 7" for counterboring the inwardly-projecting arms of a sprocketwheel, as shown in Figs. 14, 15, and 16. r is a plug adapted to iit into the bushing d in spindle F, Fig. 19. Its object is to assist in steadying the upper spindle D' while the cutter r is performing its work. Fig. 14 shows a section and Fig. 15 a top View of a special form of chuck for holding a bicycle sprocketwheel while it is being turned on the outside and bored or counter-bored on the inside. It is made with upwardly-extending projections s s s s, which are threaded on their outside for the nuts s. Between the said arms s s s s are spaces for the arms of the piece operated upon, as shown in Fig. 15. The loose collar s" iits into the inside portion of the rim of the said piece, thus truing it up by the rim, after which the nut is screwed down against it, as shown in Fig. 14. In this position, when the chuck is on the spindle F, as shown in Fig. 3, the sprocket-piece is ready to be turned and bored, as described. Passages t t t t lead down from the interior of the chuck to the outside of the same, as shown, Fig. 14, and are for the purpose of conveying away any chips orlubricant which may accumulate from the interior boring-cutters.

I claim and desire to secure by Letters Patent- 1. In an upright boring and turning machine, the combination of the frame, the upper spindle provided with rack, pinion engaging said rack, worm-wheel Q, provided with adjustable stop R, worm Q", divided triplever R having adjustable extension-piece R'", and pivoted supporting-lever S having extension S, substantially as shown and described.

2. The combination of the frame, the upper perforated spindle provided with rack, upper vertical splined spindle D, removable spurpinion H, sleeved spur-gear l'I, cooperating with spline, collar H, means for locking the said gear H', means for revolving the said gears, and means for feeding down the said spindles automatically, substantially as shown and described.

3. The combination of the frame, the lower revoluble spindle, with means for revolving the same, the slide e', bearing circular adjustable cutter G on vertical stud, and means for feeding the same by hand, the slide e, bearing ICO IIO

circular adjustable cutter G' on vertical stud and means for feeding the said slide automatically, and independently of slide e', and upper revoluble spindle with means for rotating the same, and for simultaneously feeding the same downward automatically, substantially as shown and described.

t. The combination of the frame, upper revoluble spindle, horizontal shaft Z', intermediate gearing between said .shaft and said spindle, cone-pulleys a a", cone-pulleys X'", worm-shaft X", worm X', worm-wheel X, worm-shaft V'", worm-.shaft U" and intermediate gears, worm Q'", worm-wheel Q", stop R, feed-pinion Q, and feed-spindle D, provided with feed-rack D", substantially as shown and described. v

5. The combination of the frame, lower revoluble spindle, central counter-shaftE", gears J J', shaft J", gears K' K" K'", main shaft L', gear-case N, sliding on shaft L', pinions O O' O", and locking-lever P P', substantially as shown and described.

6. The combination of bracket I', gears F' F",hollow spindle F, havingbushing d',screw threaded on the upper extremity to receive a chuck, and horizontal slide e', with means for feeding the same and bearing circular adjustable cutter G supported on vertical stud fn, substantially as shown anddescribed.

7. The combination of slide e, having feednut f, screw-threaded and shouldered stud n, jam-nut n", and binding-nut o', substantially as shown and described.

8. Thecombination of slide e, bearing circular adjustable cutter G' on vertical stud n, automatic worm feed-gear f' f ,tipping wormshaft f", slotted front bearing g", latch 71.", tripping-lever connections, and adjustable tripping means k" o'", substantially as shown and described.

9. The combination of the upper spindle D' provided with rack, .pinion engaging with said rack, worm-wheel Q" provided withadj ustable clamping-stop R, two-part trip-lever` R" having adjustable extension-piece R'", tipping-box O,c'arryin g worm and worm-shaft, means for automatically rotating the latter, and supporting-lever having lug S'l and tripping extension S', substantiallyas shown and described. v

lO. TheV combination of tubular lower revoluble spindle F, screw-threaded atY d, with chuck S3 having projections s, s, nut s', loose collar s", and inclined passages t, t, substantially as shown and described.

` 11. The combination of head B with eXten- -sions B", perforated spindle D with rack,

ing spline, having aperture b', and lockingpin b, substantially as shown and described.

shaft f" with cone-pulleys, shaft Z' with conepulleys a' and a", upper revoluble spindle D', and lower revoluble spindle F, substantially as shown and described.

. 13. The combination of spindle D with rack,

pinion Q, worm-wheel Q", adjustable stop R,

adjustableppivoted lever R", having notch T", stop-pin U, tipping-box C having slot fy', sleeved gear and clutch U'", sliding clutch W, splined worm-shaft U", worm Q'", supporting-lever S' having lug S", and clutchlever W", substantially as shown anddescribed.

14. The combination of reversible wormshaft X", having cone-pulleys X'", worm X', worm-gear X, shaft V'", bevel-pinion V", sleeved gear and clutch V', tipping-box C, having slot y', worm-shaft U", worm Q'", worm-gear Q", stud Q', pinion Q, and rack D", substantially as shown and described.

l5. The combination of lower tubular revoluble Aspindle F, 'and means for rotating the same, upper splined revoluble spindle D' having removable cylindrical crown-toothed cutter r", steadying-plug r', and means for automatically rotating and simultaneously feeding down the said spindle D', substantially as shown and described.

16'. The combination of the slide e, having feed-nut f and means for automatically feeding said slide, adjustable shouldered stud n, jam-nut fn", clamping-nut o', and circular adjustable cutter G', with revoluble spindle F, clutch S3 having projections s s, nut s', loose collar s", and passages t, t, substantially as shown and described.

17. The combination of bracket I', lower revoluble spindle F, with means for rotating the same, slide e, having feed-nut and hand feed-screw, slide e', having feed-nut and means for automatically feeding the same, means for automatically throwing the same out of feed, cutters G' G', adj ustably mounted on said slides, and upper revoluble spindle D', with means for revolving the same, and automatically feeding down the same, and automatically throwing thesame out of feed, substantially as shownand described.

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In testimony whereof I affix my signature Witnesses:

VRUFUs H. BAKER,

CONRAD WEIL,J r.

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