US689071A - Turning and boring lathe. - Google Patents

Description

No. 689,07l. Patented Dec. l7, l90i. G. A. ENSIGN. TURNING AND BORING LATHE.

( Application filed May 22, 1901.)

(No Model.) 3 Sheets-Sheet I.

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No. 689,07I.

TURNING AND BORING LATHE.

(Application flied May 22, 1901.)

(No Model.)

3 Sheets-Sheet 2.

WITNESSES: /NVEN7'0/? N0. 689.07... Patented Dec. l7, 190i. G. A. ENSIEN.

TURNING AND BORING LATHE.

(Application filed May 22, 1901.)

//v VENTOff rrno STATES tries.

GEORGE A. ENSIGN, OF DEFIANOE, OHIO,'ASSIGNOR TO THE DEFIANCE MACHINE WVORKS, OF DEFIANOE, OI-IIO, A CORPORATION OF OHIO.

TURNING AND BORING LATHE.

SPEGIFIGATION forming part of Letters Patent No. 689,071, dated December 17, 1901.

Application filed May 22, 1901.

To all whom it may concern:

Be it known that I, Gnonen A. ENSIGN, a citizen of the United States, and a resident of Defiance, in the county of Defiance and State of Ohio, have invented a new and Improved Turning and Boring Lathe, of which the following is a full, clear, and exact description.

The invention relates to Woodworking machinery; and its object is to provide a new and improved turning and boring lathe designed for rapidly and accurately producing various articles fromwood and arranged to completely bore, turn, polish, and cut off the article from the stock, so that no further hand-labor is required,and the article appears exceedingly sharp, clean, and smooth when leaving the lathe.

The invention consists of novel features and parts and combinations of the same, as will be fully described hereinafter, and then pointed out in the claims.

A practical embodiment of the invention is represented-in the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a perspective View of the improvement. Fig. 2 is an enlarged transverse section of the same on the line 2 2 in Fig. 1. Fig. 3 is a like view of the same on the line 3 3 in Fig. 1, and Fig. 4 is a sectional side elevation of the tool-post and the finishing-tool held thereon.

On the bed A of the lathe is mounted a suitable head-stock B, carrying a spindle 0, provided with driving-pulleys D and with a chuck E for engaging and holding one end of the stock F to be first acted on at its other end by a roughening-tool G, then bored by a bit H, then finished by a finishing-tool I, the finished article being finally cut off the outer end of the stock by a cut-off tool J. The ronghening-tool G extends through a slot K into the mouth of a bushing K, removably held in a suitable bearing on the carriage L, the aXis of the bushing coinciding with the axis'of the spindle C, so that the free end of the stock F can pass through the bore of the bushing, the size of the bore conforming to the largest diameter of the article to be fin- Serial No. filAOl- (N0 model.)

ished. As shown in Fig. 2, the bushing is formed at its front face with a flange K ,abutting against the front of the carriage L, and a set-screw K screwing in the latter, serves to securely hold the bushing in position.

A carriage L is mounted to slide longit'u riage L is moved longitudinally toward the head-stock B to cause the roughening-tool G to roughen the stock F at the free end there of, the roughened portion of the stock passing through the bore of the bushing K and projecting from the right-hand side thereof, to be then engaged by the finishing-tool I for turning this end of the stock into the comple-te article.

In case the article is to be bored in addition to being turned, the bit H is first moved up to bore theend of the stock previous to finishiug the same by the tool I; but in case the article is not to be bored then the bit H is dispensed with and a cup-shaped center is employed to engage the outer end of the stock and hold the same true during the finishing process. \Vhen the stock, however, is bored by the bit, then the latter remains in position during the finishing process by the tool I, so that the stock is steadied at the outer end. The roughening-tool G is held on a tool-post G, fulcrnmed at G on the carriage L, and a screw G screwing on said carriage, engages the bottom of the tool-post G to permit of adjusting the tool-post and bringing the cutting edge of the roughening-tool G in proper position relatively to the stock. A

bolt G extending through a segmental slot G in the tool-post G, serves to fasten the latter in place after the tool-post is adjusted, as previously mentioned. A clamping-bar G engages the top of the roughening-tool, so as to securely hold the same in placein the toolpost G, and aset-screw G" presses the clamping-bar G for the purpose mentioned.

The finishing tool I has a cross-section throughout its length conforming to the shape of the article to be turned from the stock F, and the cutting edge of the'tool is formed by beveling one end thereof in the usual manner, as is plainly indicated in Fig. 3. The tool I is moved transversely through the stock, the cutting edge and the upper face being a distance from the axis of the stock, so that during the transverse movement of the tool I the stock is turned to the exact shape, it being understood that the distance the cutting edge passes through the stock from the axis thereof corresponds to the diameters of the article to be finished.

The finishing-tool I is held in a tool-post N and is fastened therein by set-screws N, engaging the top of the tooll, so as to press the samein contact with removable bottom pieces N as isplainly indicated in Figs. 3 and 4.

The tool-post N has its base .N mounted to slide on transverse guideways N, fulcrumed at N on the front of the carriage L, and on the free end of said guideways N is arranged a yoke N engaged by a screw-rod N abutting with its lower end on the carriage L, so as to hold the guideway N in a desired inclined position, so that when the tool-post N is moved transversely on the guideway the cutting edge and top of the finished toolIare the desired distance from the axis of the stock. The yoke N is adapted to be locked in place on the carriage L after the desired adjustment is made by the screw N and for this purpose a b'oltN is provided, screwing in the carriage L and extending through a segmental slot N formed in the yoke N, as is plainly shown in Figs. 2 and 3.

In order to impart the desired transverse movement to the tool-post N, the latter is provided with a rack O in mesh with a pinion 0', secured on a shaft 0 mounted to turn and to slide longitudinally in bearings carried by the carriage L. A handle 0 is securedon the shaft 0 and is adapted to be taken hold of by the operator to enable the latter to impart a turning motion to the shaft 0 and to cause the pinion O to move the rack 0 and tool-post N transversely to cause the tool I to engage and turn the stock, as above explained, and to return the tool I to a starting position, as shown in Fig. 3. A block 0 is held between the pinion O and one of the bearings for the shaft 0 so as to hold the pinion O in mesh with the rack 0; but when the attendant desires to change the position of the handle 0 then he releases the block 0 and pulls 011 the handle 0 to slide the shaft 0 from the left to the right, and thereby move the pinion 0 out of mesh with the rack O. The attendant can now move the handle into a desired position and then slide the shaft 0 from the right to the left to again move the pinion O in mesh with the rack O. The block 0 is then again inserted between the pinion O and the bearing to hold the pinion in mesh with the rack.

The cut-off tool J is secured on a tool carrier or post P, mounted to slide vertically on bearings L secured or formed on the carriage L, and on said carrier P is arranged a pin P, extending through an elongated slot P in an arm P fulcrumed at P on the car riage L. (See Fig. 2.) A spring P is connected with the arm P so as to hold the latter and the cut-off tool J normally in an uppermost position, said spring P being connected with a screw-rod P for regulating the tension of the spring P A lever P adapted to be taken hold of by the attendant, is connected with the arm P so that upon swinging the lever P downward in a forward direction against the tension of the spring P then the arm P by the pin P imparts a downward sliding motion to the tool post or carrier P and moves the cut-off tool J in engagement with the stock at the end of the article formed by the tool I and adjacent to the outer end of the bushing K, so that the article is out offfrom the stock. when the attendant releases the pressure on the lever P then the spring P returns the several parts to'an uppermost dormant position. The arm P can also be automatically actuated from the tool-post N, and for this purpose the arm P is provided with an angular arm P carrying a vertical roller P adapted to be engaged by a lug P secured to the base N of the tool-post N, so that when the latter is moved transversely and the tool Ihas finished the article then the lug P moves in engagement with the friction-roller P and imparts a swinging motion to the arms P and P to slide the carrier Pdown ward, and thereby cause the cut-off tool J to cut off the article from the stock after the article has been finished by the tool I. The tail-stock center Q, carrying the bit H or cup-center, is adjustably held by a set-screw Q in the tail-stock Q mounted to slide on the guideway A, and on said tail-stock Q is journaled a shaft Q carrying a pinion Q in mesh with the rack L, so that when the shaft Q is turned the tail-stock can be longitudinally adjusted on the guideway A to bring the bit H or the cupcenter in engagement with the end of the stock for the purpose previously mentioned. A hand-wheel Q is secured on the outer end of the shaft Q to permit the attendant to conveniently and quickly turn the shaft Q On the bed A, adjacent to the head-stock B, is secured a stop It for the carriage L to limit the movement of the said carriage from the right to the left and prevent the roughening-tool G from moving in engagement with the chuck E.

The operation is as follows: The stock F,

of a desired length and diameter, is secured at one end in the chuck E, and then the attendant by turning the hand-wheel L feeds the carriage L from the right to the left, so

that the roughening-tool G turns the stock F, the turned portion passing through the bushing K to the right-hand side thereof, and when the desired length projects beyond the bushing corresponding to that of the article then the attendant stops the feed of the carriage L, takes hold of the handle 0 and swings the same upwardly and transversely to cause the tool-post N to feed the tool I throughthe stock, and thereby turn the article to the desired shape. As the top face of the tool I corresponds to the shape of the finished article it is evident that after the cutting edge has dressed the stock to the shape of the article then the top surface of the tool I moves in engagement with the article, and thereby polishes and smoothes the same. The attendant then swings the handle 0 back to its previous position, so that the tool I moves out of engagement with the article, and the latter is now out off, as previously explained, either by the operator swinging the lever P downward or the lug P having previously engaged the frictionroller P as described. In case the article has to be bored, then the bit H is used as previously explained, the bit remaining in position during the finishing operation by the tool I, and then the bit is run out of the article previously to cutting the article from the stock by the cut-off tool J. After the article has been cut the operator again turns the hand-wheel L and the above-described operation is repeated.

Having thus fully described my invention, I claim as new and desire to secureby Letters Patent- 1. A lathe having a tool-post mounted to slide transversely relatively to the stock, a finishing and polishing tool carried by the tool-post and having its cutting edge and top .face conforming to the shape of the article to be turned, a guideway pivoted at one end and upon which the toolpost slides, an adjusting device for the free end of the guideway, a rack on the tool-post, a pinion movable in and out of mesh with the rack, and means for operating the pinion, as set forth.

2. A lathe having a tool-post mounted to slide transversely to the stock, a finishing and polishing tool carried by the post, a guideway pivoted at one end and on which the post slides, an adjusting device for the free end of the guideway, a rack on the tool-post, a shaft mounted to slide and turn, a pinion on the shaft and meshing with the rack, a handle on the shaft for turning and sliding it, and means for locking the shaft against sliding movement, as set forth.

3. A lathe having a tool-post mounted to slide and provided with a rack,a shaft mounted to turn and to slide and provided with a pinion meshing with the rack, and with a handle for turning and sliding it, and means for locking the shaft against sliding movement, as set forth.

4:. A'lathe having a tool-post carrying a finishing and smoothing tool and mounted to slide transversely and cause the tool to turn the stock and smooth the article turned, a sliding cut-off tool-carrier,and means adapted to be engaged by the tool-post to operate the cut-off tool, as and for the purpose set forth.

5. A lathe having a tool-post mounted to slide transversely, a rack on said tool-post, a pinion in mesh with said rack, a shaft mounted to turn and to slide lengthwise and carrying said pinion, a handle on said shaft, and a removable block for insertion between the pinion and a shaft-bearing, as set forth.

6.- A lathe, comprising an upper stock-spindle carrying a chuck for the stock, a carrier mounted to slide longitudinally,a stock-bushing removably held on said carrier in axial alinement with said spindle, a rougheningcutter on the carrier and extending through a slot in the bushing to the bore thereof, a tool-post mounted to slide transversely on the carrier relatively to the stock, a finishingtool on said tool-post, a vertically-movable carrier carrying a cut-off tool for cutting off the finished article from the stock, and means adapted to be engaged by the tool-post to opcrate the tool-carrier, as set forth.

7. In a lathe, the combination with .a transversely-movable finishing-tool carrier, of a vertically-sliding cut-off-tool carrier, and an angular arm having one member loosely connected with the cut-off-tool carrier and its other member projecting into the path of the finishing-tool carrier, as set forth.

8. In a lathe, the combination with a sliding finishing-tool post provided with an upwardly-projecting lug, of a vertically-sliding cut-oif-tool carrier provided with a lateral pin, an angular pivoted arm having a slot in one member through which said pin passes, the other member of the arm extending down in the path of the lug of the tool-post, and a spring secured to said arm and to a fixed support so as to hold the said carrier in an uppermost position, as set forth.

In testimony whereof I have signed my name to this specification in the presence'of two subscribing witnesses.

GEORGE A. ENSIGN.

Witnesses:

GEO. W. DEATRIGH, JOSEPH BAUER.

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