US399919A - Machine for gumming and sharpening gin-saws - Google Patents

Description

(No Medal.) 2 Sheets-Sheet 1.

T. ENANGE.

MACHINE FOR GUMMING AND SHA'RPEITING GINSAWS.

No. 399,919. PatentedMaJr. 19, 1889.

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T. H. NANCE.

MACHINE FOR GUMMING AND SHARPENING GIN SAWS. No. 399,919. Patented Mar. 19, 1889..

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TURNER IIUNT NANCE, OF TALLADEGA, ALABAMA.

MACHINE FOR GUNHVIING AND SHARPENING GIN-SAWS.

SPECIFICATION forming part of Letters Patent No. 399,919, dated March 19, 1889. A

Application filed October 16, 1888. Serial No. 288 225. (No model.)

To all whom it may concern:

Be it known that I, TURNER HUNT NANCE, a citizen of the United States, residing at Talladega, in the county of Talladega and State of Alabama, have invented a new and useful Improvement in Machines for Gumming and Sharpening Gin-Saws, of which the following is a specification.

My invention relates to an improvement in machines for gunnning and sharpening ginsaws; and it consists in the peculiar construction and combination of devices, that will be more fully set forth hereinafter, and particu larly pointed out in the claims.

This invention is an improvement on the machine described in Letters Patent of the United States No. 358,874, granted to me March 8, 1887; and the object of my present improvement is to simplify the construction of the machine and increase the utility thereof.

In the accompanying drawings, Figure 1 is a side elevation of a saw sharpener and gummer embodying my improvements arranged in position to operate 011 the teeth of a ginsaw. Fig. 2 is a top plan view of the same. Fig. 3 is a vertical longitudinal sectional view taken on a' so of Fig. 2. Figs. 4 and 5 are detail perspective views of modified forms of my invention. Fig. 6 is a detail view showing the slot in the arm I. Fig. 7 is a detailed perspective View of the punch and the gage.

A represents a shaft of a cotton-gin. B represents a series of saws, which are attached to the said shaft; and 0 represents the usual blocks, which are used to separate the saws on the shaft and to space them a suitable dis tance apart.

D represents the body or frame of a saw gumming and sharpening machine, which consists of a longitudinal bar of metal provided at one end with a slot, E, which is open, as shown.

If preferred, the body or frame may be composed of three or more longitudinal bars securely fastened together.

The slot E bifurcates the outer end of the body or frame and forms a pair of arms, Gr H. The latter has a recess, I, of suitable length on its outer side, and in the said recess is arranged the inner end of an arm, I. A pivotal bolt or screw, K, extends through an opening near the inner end of arm I, and engages a transverse threaded opening in the arm I-I, thus pivoting the arm I to the body or frame, and said arm I has a curved slot, L, which is concentric with the pivot K, and is engaged by a set-screw, M, which also enters the arm II, and is adapted .to secure the arm I to the body or frame at any desired angle.

N represents a circular disk or die-plate of suitable diameter, which is arranged in the slot E, and is clamped against the inner side of the arm G by means ofa set-screw, O. Said die-plate has a series of peripheral tangential V-shaped notches, P, which are arranged at substantially right angles to each other, as shown, and are adapted to register with the upper side of the body or frame D, near the inner end of slot E. The width of the disk or die-plate N is somewhat less than the width of the slot E, thereby adapting the edge of the gin-saw to be inserted in said slot between the opposing sides of the die-plate or disk and 'the arm H, as shown in Fi 2.

R represents a stud, which extends transversely through the body or frame, and has an enlarged head, S, that projects from one side thereof.

T represents a punch, which may be either single or double ended, and has its ends beveled downward on their upper sides .and inward on their outer edges, as shown. The said punch is made of steel, is arranged on the bed or body D, and is pivoted theretoby means of a screw, U. The front end of the punch is adapted to enter the notch P of the die-plate or disk, which registers with the upper side of the frame or body. On the beveled outer side of the front end of the punch is arranged a gage, V, the same having a longitudinal slot, WV, through which extends a set-screw, X, that enters a threaded opening in the punch, and is thereby adapted to secure the gage thereto at any desired adjustment. The depth of the cut of the punch is regulated by increasing or decreasing the distance between the outer ends of the punch and gage by adjusting the latter, as will be readily understood.

Y represents a handle, which has a threaded stud, Z, at its front end, that is'screwed into a longitudinal threaded opening in the rear end of the frame or body D, the said handle being thereby secured to the said frame or body, and being adapted to be grasped by the left hand of the operator.

A represents a circular disk, which is made of metal, and is pivoted eccentrically on the head of stud R by means of a bolt or screw, B.

C represents a rod, which has its inner end screwed into'an opening in one side of the eccentric, and to the outer end of the said rod is secured a handle, D, which is adapted. to be grasped by the right hand of the operator.

E represents a spring-arm, which is secured to the outer side of the frame or body D,near the rear end thereof, by a screw, F, and the free end of the said spring-arm is bent inward at right angles and bears against the outer side of the punch and presses the latter against one side of the eccentric. hen the handle D is moved outward from the frame, the eccentric is turned, and the spring-arm moves the front end of the punch laterally beyond the engaging edge of the saw. The operator then urges the device forward with his left hand to engage the gage V with the out between two of the saw-teeth, and thereby arrange the projecting end of the punch against one side of the saw, and he then moves the handle D inward, thus causing the eccentric cam to move the punch laterally and cause the engaging end thereof to deepen the out between the saw-teeth, as will be readily understood.

In order to prevent the punch from moving vertically 011 the body or frame, I provide a screw, G, which engages a threaded opening in the upper side of arm H, and has its head bearing on the free end of the punch, as shown. At the outer end of the arm I is a weight, H, which serves to balance the device on the gin-saw, said arm bearing on one of the blocks, as shown.

In Fig. 4 I illustrate a modified form of my invention, in which I discard the spring-arm E and substitute therefor a coiled extensile spring, a, which is arranged on one end of a movable pin or bolt, 1), that works in a transverse opening in the frame or body, has a nut,

0, which bears against the outer end of the spring, and has its opposite end curved upward to form a semicircular arm, cl, that bears against the outer side of the punch.

I11 Fig. 5 I illustrate another modified form of my invention, in which the gage has a lateral arm or head, 9, at its rear end, which bears on the upper side of the punch, and has an enlarged circular opening, f, through which passes a stem or shank of a set-screw, 11, said set-screw entering a threaded opening in the upper side of the punch, and having its enlarged head bearing on the plate or arm 6, and securing the gage to the punch at any desired adjustment.

Having thus described my invention, I

claim 1. In a saw gumming and sharpening machine, the laterally-movable punch pivoted directly on the body or frame, and having its outer cutting end beveled on its upper side to form a cutting-edge, substantially as described.

2. I11 a saw gumming and sharpening machine, the punch having the gage V clamped to one side and movable toward and from the cutting-point of the punch, substantially as described.

3. In a saw gumming and sharpening machine, the laterally-movable punch pivoted on the body or frame, and the screw G, engaging the upper side of the cutting end of the punch to prevent the latter from rising, substantially as described.

4. In a saw gumming and sharpening machine, the punch pivoted directly to the frame or body and laterally movable thereon, the operating-cam bearing on one side of the punch, and the spring bearing on the opposite side thereof, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

TURNER HUNT NANCE.

\Vitnesses P. I'IAINE, J. H. ELLIOTT.

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