US645601A - Wood-turning machine. - Google Patents

Description

No. 645,601. P'atented Mar. 20, 1900..

H. MAYERS.

WOOD TURNING MACHINE.

(Application filed Sept. 16, 1899.)

(No Model.) 3-Sheets t l.

a Illllllllllllllllll' No. 645,60l. Patented Mar. 20, I900. I H. MAYERS.

WOOD TURNING MACHINE.

(Application 81 d 5 pt. 16, 1899.)

(No Model.) 3 Sheets-Sheet 2.

i IIIIIIC l4 r- Avuen/or No. 645,60l. Paten ted Mar. 20, I900.

H. MAYEBS.

WOOD TURNING MACHINE.

(Application filed Sept. 16, 1899.) (No Model.) 3 Sheets-Sheet 3.

siren STATES PATENT Fries.

HENRY MAYERS, or Union CITY, *rnntivnssnn.

WOOD-TURNING IVIACHlhlE.

si rcrrrcArron forming part er Letters Patent No. 645,601, dated March 26, 1906.

, Application filed $eptember 16,1899. fierial No. 730,731. (No model.)

To all whom it may concern.-

Be it known that I, HENRY MAYERs, a citi zen of the United States, residing at Union City, in the county of Obion and State of Tennessee, have invented certain new and useful Improvements in Wood-Turning 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 same.

This invention relates to new and useful improvements in wood-turning machinery,especially to the chuck-head; audits object, among other things, is to provide a head of simple and durable construction particularly adapted to the shaping of chair rounds or stretchers and the cutting of a radial groove or grooves therein when desired.

To these ends the invention consists in providing an ordinary chuck-head with a lateral passage adapted to receive a knife or bit secured at its outer end to one of two similar segments which are mounted upon springs on opposite sides of the head, with which they revolve, forming at the same time a bearing for. a clamp which may when desired compress said segments while revolving, and thereby cause the insertion of the bit into'the socket of the chuck-head.

The invention also consists in the further novel constructions and combinations of parts hereinafter more fully described and claimed, and illustrated in the accompanying drawings, and in which-- Figure 1 is a perspective view of my improved chuck-head in position within a clamp. Fig. 2 is a central longitudinal section through the head. Fig. 3 is asection on line 00 as, Fig. 2. Fig. 4 is a section on line y y, Fig. 2. Fig. 5 is a detail view of a bit. Fig. 6 is a perspective view of a knife looking toward the inclined or cutting edge thereof. Fig. 7 is a front elevation of a second form of clamp. Fig. 8 is a longitudinal section on line .2 2, Fig. 7. Fig. 9 is a view of a chair-round after it has been cut longitudinally by the knife of the chuck, and Fig. 10 is a similar view of a finished round produced by my chuck-head.

Referring to said figures by letters of reference, A is a mandrel driven in any suitable manner, and B the chuck secured thereto, as

desired, preferably by inserting the threaded end of said mandrel into a threaded socket B, formed in the rear reduced portion of the chuck B. The enlarged front portion of the chuck B, within which is located the stock-receiving recess 'C,is provided with a lateral slot 0, adapted to receive a knife D, bolted to said chuck in the usual manner and adjustable thereon. This knife is preferably of such construction as to produce a round having a contour substantially such as shown in Fig. 9. Arranged, preferably, at right angles to said slot 0 is a second passage E,adapted to receive abit F, threaded at its outer end, as at F, and secured by means of nuts f to the forwardlyprojecting arm G of a plate or casting G, and said arm is loosely bolted by means of bolts g to the chuck, as shown. The rear portion G of the casting, which partially incloses the rear end of the chuck,- is nearly semicircular in cross-section and diminishes in size from its front to its rear edge. A similar casting H is loosely mounted upon the opposite side of the chuck without, however, having a bit secured thereto, and between each casting and the rear portion of the chuck is located a spring I, the ends of which are seated in suitable recesses, whereby the castings G and H are normally pressed away from the chuck, and thereby keep the end of the bit F outside of the recess C.

. In operating my device I employ a suitable clamp, as shown in Fig. 1, for forcing the castings G and H together while the chuck is revolving with the mandrel upon which it is mounted. In said figure the clamp is shown as formed of two cross-pieces J and J, each pivoted at one end to an upright and provided with semicircular recesses within which the chuck and its plates G and H may revolve. At one end of the lower cross-piece is secured a cord 3', which passes thence over a pulley j, mounted in the opposite end of the upper cross-piece J. This cord can be operated by the hand or foot, and it is obvious that when pressure is exerted thereupon the cross-pieces will clamp the castings G and H, which will be forced together thereby and continue to revolve therein.

In Figs. 7 and '8 I have shown another form of clamp, which consists of a ring K, having a tapered bore pivoted upon a yoke movement thereto and to the bitwhile re- K, which is mounted upon the end of a bar K This bar may be pivoted in the center and operated by means of a cord which will throw the ring K forward over the castings G and H and compress them as desired.

In operation the stock is fed to the chuck in any suitable manner, preferably by hand, i

and the knife D immediately gives the round the form shown in Fig. 9. Without stopping the motion of the chuck the clamp is applied thereto, forcing the castings G and II together and causing the bit F to bite into the wood and form the desired radial groove therein, as shown in Fig. 10. As soon as the pressure of the clamp is removed the springs I, assisted by the centrifugal force, will withdraw the bit and the finished round may be removed.

It is obvious that more than one. radial. groove may be out upon theround, as two or more bits may be used, also, in lieu ofbolt-; ing-the plates or castings G and H to the; front, edge of chuck-head they could be.

hinged thereto in any suitable manner.

A chair-round produced by thismachine possesses many advantages overthe ordinary chair-round which is combined bone: dried. with a leg or post in a similarcondt. tion and glued thereto. It iswell, known,

that frequently the glue releases its hold,

causing the chairs to come apart andoften breaking some of its parts. By my construc tion it is merely necessary to force the grooved;

round intothe post. That portion ofthe walls of the recess which is adjacent to the groove will soon contract, filling the. groove.

and securely locking the two partstogether, forming practically one piece. This construction, therefore, entirelyovercomes the, necessity of using glue in joining the rounds; and parts of chairs.

1 makeno claim to the round herein shown and described, as the same forms. subject. matter for asecondapplication filed by meon December 2, 1899, Serial No.;738,989.

Having thus fully described my invention, What I claim, and desire to secure byLetters Patent, is-

1. In a device of thecharacter described, the combination, with a chuck-head, of a .bearingplate are shaped in crosssection loosely secured to and partially embracing said head, a bit secured to the plate and projecting into a lateral passage in the chuckhead, and means normally mounted on and.

bearing upon said plate for imparting lateral volving, substantially as described.

2. In a device of the character described,.

the combination, with a chuckThead, of a plate arc-shaped in crosssection pivoted, to, and. partially embracing, said head,,a taperedend v to said plate, a bit secured to the plate and projecting into a lateral passage Within. the head, a spring intermediate said plate and the head, and means mounted on and bearing upon the tapered portion of the plate for. comprojecting into a lateral passage within the head, a similar plate loosely secured to the opposite side of the chuck-head, springs intermediate the tapered ends of said plates and the head, and means mounted upon said tapered ends for compressing the plates and forcing the bit inward during the operation of the chuck, substantially as described.

4:. In a device of the character described, the combination, with the chuck-head, of

plates loosely mounted thereon at opposite sides thereof and, adapted to inclose thehead, ,rear. end portions of said plates arc-shaped in cross-section and embracing therear, end of the chuck-head, a bit secured to. one end of said plates and projecting into a; lateral passage within the head,.and a clamp asdescribed bearing upon the arc-shaped portion of the plates and adapted to press thesame with the bit, inward, when desired, during the-operation of thechuck,substantiallyas described. 5. In-a device of ,the character described,

the combination, withvthe chuck-head, of plates loosely mounted thereon at opposite sides thereof, rear endportions of said plates arc-shapedincross-section and embracing the solid rear end of thechuck-head,springs in termediate said arc-shaped portions of the platesand the head, said arc-shaped portions tapered rearwardly, a bit secured to one of the plates and projecting into a lateral pas ,sage within the chuck-head, a clamp inclosing and bearingupon: the tapered portion of the plates,and means for operating said clamp,

whereby the plates and thebit areforced inward as desired duringtheoperation of the chuck, substantially asdescribed.

G. Ina device of thecharacter :described, the combination, witha chuck-head having a socket or work-receiving recess and a solid rear portion, of plates arc-shaped in cross-section and loosely secured, at one end, to said chuck-head, enlarged tapered ends to .7 said plates adapted to in close thesolid portion of the chuck and forming a bearing for a clamp, as described, mounted thereon, anda bit secured to one of the plates and projecting into alateral passage within the chuck-head, substantially as described.

7. In a device of. the character described,

the combinatiomwith achuck-head having arc-shaped plates loosely secured thereto at one end, springs between said plates and head,

and a bit secured toone of the plates, of a clamp bearingupon said plates andcomprisin g an upper and a lower cross-piece, pivoted asdescribed, and means for. operatingsaid -cross-pieces toward each other, substantially as and for the purpose described.

said cross-piece and mounted on the pulley, 10 for the purpose and substantially as described.

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

HENRY MAYERS.

Witnesses:

W. HAMILTON, J AS. H. FAIRCLOTH.

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