US1030981A - Attachment for turning-lathes. - Google Patents

Description

2 SHEETS-SHEET 1.

Patented July 2, 1912.

C. L. DICKERT.

ATTACHMENT PoR TURNING LATHBS.

APPLIOATION FILED SEPT. 15, 1911.

CDLUMBIA FLANUURPH co., WASHINGTON, DY C.

0. L. DIGKERT.

ATTACHMENT FOR TURNING LATHES.

APPLICATION FILED SEPT. 15, 1911.

Patented July 2, 1912.

2 SHEETS-SHEET 2.

COLUMBIA PLANMRAPH c0..WAsl-||Nu'roN. D.. c.

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CURTIS LEE DICKERT, OF MACONl GEORGIA. ASSIGNOR OF ONE-THIRD T0 CHARLES WILLIAM RICE AND ONE-THIRD TO WALTER CHAPMAN, OF MACON, GEORGIA.

ATTACHMENT FOR TURNING-LATI-IES.

To all whom t may concern Be it known thatl I, CURTIS LEE Drciiun'r, a citizen of the United States, residing at Macon, in the county of Bibb and State of Georgia, have invented certain new and useful Improvements in Attachments for Turning-Lathes; and I do delcare the following to bea full, clear, and exact description ot' the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to attachments for turning lathes.

One object of the invention is to provide an attachment for turning lathes whereby when the work will not swing clear of the lathe shears the tool may be revolved instead of the work.

Another object is to provide an attachment of this character adapted to be applied to the lathe carriage in place of the. tool head and having means to operatively connect the same with the driving mechanism of the lathe.

With these and other objects in view the invention consists of certain novel features of construction, and the combination and arrangement of parts as will be more fully described and claimed.

In the accompanying drawings: Figure 1 is a side view of a portion of a machine lathe showing the application of the invention; Fig. 2 is an enlarged vertical sectional view of the 'tool holding and revolving mechanism of the attachment; Fig. 3 is an end view thereof; Figltis a side view of the rotary tool holding member of the attachment; Fig. 5 is an end view thereof with the parts broken away `and in section; Fig. 6 is an end view of the face Vplate of the lathe showing the power transmitting gear of the attachment secured thereto; Fig. 7 is a central longitudinal sectional view of the parts shown in Fig. 6; Fig. S is a side view partly in section of the pinion and sleeve of the power transmitting shaft with which the power transmitting gear of they attachment is operatively engaged; Fig. 9 is a similar view of the sleeve and pinion vide a supporting frame 1 comprising paral- Specficaton of Letters Patent.

Application led September 15, 1911.

Patented July 2, 1912.

Serial No. 649,585.

lel side plates 2 formed integral with a base plate 3. The plates 2 are rigidly braced at their side edges by integral bracing webs 4f as shown.. In the upper portion of the plates is formed the lower half of a bearing 5 the upper half G of which is arranged on the upper ends of the plates and is securely fastened thereto by bolts 7 engaged with lugs 8 formed on the edges of the plates as shown. The upper half or section 6 of the bearing is preferably in the form of two semrcircular plates connected together midway between their ends by an integral web 9, said plates being also connected together at their ends by the lugs 8 as shown.

The frame 1 is adapted to be bolted or otherwise suitably secured to the carriage 10 of the lathe and to take the place of the tool vhead usually attached to the carriage. In the lower portion of the side plates 2 of the frame are formed bearings 11 in which is revolubly mounted a sleeve 12 having on its inner end an annular stop iange 13 adapted to engage the end of the bearing while the opposite end of t-he sleeve is threaded exteriorly to receive an internally threaded retaining washer or nut lil which is screwed thereon and into engagement with the opposite end of the bearing as clearly shown in Fig. 2 of the drawings. On the sleeve ,l2 is formed a centrally disposed spur gear pinion 15 which is adapted to engage and operate the tool supporting mechanism hereinafter described. Thel sleeve 12 has a keyed sliding engagement with a power transmitting shaft 16 which is operatively supported at one end by said sleeve and the frame l and has fixedly mounted on its opposite end a supporting and operating sleeve 17 which is revolubly supported in a bearing bracket 18 secured to the frame of the lathe as shown. The sleeve 17 has formed on one end a spur gear pinion 19 which when the shaft and sleeve are in place is disposed adjacent to the outer side of the bracket 18. The opposite end of the sleeve 17 is eXteriorly threaded and has screwed thereon an. interiorly threaded retaining washer 2O whereby the shaft is heldin position and revolubly supported by the bracket 18.

Secured to the face plate 21 of the lathe byscrews of other suit-able fastening means is a power transmitting gear 22 which is adapted to engage the pinion 19. By thus engaging the gear 22 with the pinion 19 on the power transmitting shaft 16 the latter will be driven by the power which operates the lathe as will be readily understood.

Revolubly mounted in the bearings formed in the side plates and upper section of theframe 1 is atool supporting and operating member comprising semi-cylindrical sections 23 and 24 having on their opposite ends segmental flanges 25 in which adjacent to their engaging ends are formed right angular notches 26, said notches forming lugs 27 on the ends of the anges as shown. In the lugs 27 are formed screw holes, the holes of the lugs on the flanges of one section being threaded to receive the clamping screws 28 by means of which the sections 23 and 24 are securely fastened together. On the outer sides of the sect- ions 23 and 24 midway between the flanges 25 are formed segmental series of spur gear teeth which, when the sections are clamped together form a gear 29 with which thegpinion 15 on the sleeve 12 of the power trans-` mitting shaftisoperatively engaged to revolve said tool carrying member in its bearings in the frame 1.

In the anges 25 on the, upper section 23 of the tool holding member are formed centrally disposed angular tool receiving slots 30 said slots opening through the inner surface of the sect-ion 23 as shown clearly in Fig. 2. lWith the slot 30 at either end of the section 23 is adapted to be engaged the cutting tool or bitrl said tool being adjustably securedin the slots 30 by set screws 32 arranged in the outer ends of the section 23 as shown. By thus arranging and connecting the tool holding member it will be seen that the latter may be driven by the driving mechanism of the lathe to bring the tool in operative engagement with the work when the latter is of such nature as to prevent the same from being revolved by the lathe in the usual manner. By attaching the supporting mechanism of the tool holding member to the lathe carriage in place of the usual tool head, said supporting mechanism and the tool holder may be readily shifted back and forth across the lathe and will be automatically fed byY the usual feeding mechanism of the carriage. It will be noted that the power transmitting shaft 16 is provided throughout its length with a continuous key way thus permitting the sleeve of the power transmitting pinion 15 to operatively engage the shaft at any position to which the carriage may be shifted.

The attachment is primarily designed for the purpose of turning bearings on lift shafts but may be employed with any work for whichthe same is suited. In arranging the attachment the same is Secured to the carriage of the lathe in the manner described and the work is inserted through the tool holding and operating member of the attachment and is secured to the face plate and tail piece` of the lathe in the usual manner. When thus arranged the tool or bit is adjusted in the tool holding member to bring the edge of the bit into operative engagement with the work and as hereinbefore stated, said bit or Atool is fed along by the tool feeding mechanism which shifts the carriage to the lathe. Y

From the foregoing description taken in connection with the accompanying drawings, the construction and o-peration of the invention will be readily understood without requiring a more extended explanation.`

Various changes in the form, proportion and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of the invention as claimed.

Having thus described my invention, what I claim is: i

1. A tool holding and operating attachment for turning lathes comprising a supporting frame adapted tobe secured to the carriage of the lathe, a tool holding and operating member revolubly mounted in said frame comprising a tubular cylindrical body having retaining flanges for engagement with said frame, said flanges having obliquely disposed tool Y receiving formed therein, means for securing tools in said slots, a power transmitting shaft geared to the driving mechanism of the lathe, and means to operatively connect said shaft withY said tool holding and operating member whereby the latter is driven and the tool thus operatively applied to the work.

2. A tool Asupporting and operating attachment for lathes comprising a Vsupporting frame adapted to be secured to the carriage of therlathe, a tool supporting member revolubly mounted in said frame, said member comprising semi-cylindrical sections bolted together toform a tubular cylindrical body, retaining anges formed on the ends of said member and adapted to engage the outer sides of the frame, a spur gear arranged on said member midway between said flanges, means to secure a tool in the flanges of one of the sections of said member, a revolubly mounted power transmittingshaft,'a pinionl slidably keyed t-o one end of said shaft and adapted to engage the gear on saidV tool holding member whereby the latter is revolved by said shaft, and means to operatively connect the opposite end of the shaft with the driving mechanism of the lathe. s

3. A tool holding and operating attachment for lathes comprising a supporting frame adapted to be attached to the carriage of the lathe, a tubular cylindrical tool holding and operating member revolubly s lotsV mounted in said frame, means to adjustably secure a tool or bit in said member, a gear arranged on said member, a revolubly mounted power transmitting shaft, a sleeve slidably keyed to said shaft,apinion formed on said sleeve and adapted to engage the gear on said tool operating member, a. sleeve xedly mounted on one end of said shaft, a pinion formed on said sleeve, a power transmitting gear operatively engaged with said pinion, and means to secure said gear to the face plate of the lathe.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

CURTIS LEE DIGKERT.

Vitnesses:

BEN BASHINSKI, J. B. RAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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