US378196A

US378196A - Daniel f

Info

Publication number: US378196A
Authority: US
Publication date: 1888-02-21
Anticipated expiration: 1905-02-21

Description

(No Model.)

D. F. DUNN.

MACHINE FOR TRUING VALVE PLUGS, SEATS, &c. No. 378,196. Patented Feb. 21, 1888.

WITNESSES: INVENTOR: I

ATTORNEYS.

' UhllTED "Sierras PATENT @trrc DANIEL F. DUNN, OF COLUMBUS, OHIO, ASSIGNOR OF ONE-HALF TO JOHN S. ELLIS, OF SAME PLACE.

MACHINE FOR TRUSNG VALVE PLUGS, SEATS, 8L0.

.SPBCIFICATION forming part of Letters Patent No. 378,195, dated February 21, 1883.

Application filed October 15, 1887.

To all whom it may concern:

Be it known that I, DANIEL F. DUNN, of Columbus, in the county of Franklin and State of Ohio, have invented a new and Improved Machine for Trning Valve Plugs, Seats, &c.,

of which the following is a full, clear, and exact description.

The present invention relates to a device for centering a valve-stem or valve-casing, 810., and means for grinding or burring the plug or seat of the socentered valve stem or casing; and it consists in the formation and combination of the parts for operation, all substantially as will hereinafter more fully appear, and be :5 pointed out in the claims,

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure l is a side view of the clamping and centering mechanism, showing the position of a valvestem when centered and clamped therein and the burring or grinding imple ment combined therewith. Fig. 2 is an end view of the clamp-arms and clamp-jaws and of a barring head, and Fig. 3 is a view of the burr-shaft crank detached.

At and upon the end of astationary tubular spindle, A, suitably supported or held and exteriorly screw-threaded, are formed ear-pieces a u, to which are pivotally hung the ends 5 of clamp'arms B, having inward bends near their outer ends, as at c, to the ends of which, by their car pieces (1, are pi votally hung clamping'jaws C, the inner edges, f, of which are made of concave or other suitable form for an embrace or hold of said jaws upon the valve, stem, the, said clamparms 13 having lugs D outside of their pivotal connections with the tubular spindle, to which are pivoted the outer ends of links E, their inner ends being pivoted to earpiecesq, formed upon asleeve, F, fitting loosely upon the screw-threaded tubular spindle A, to the rear of which sliding sleeve, e11- gaging with the screw-threads of the spindle, is a nut, G.

lVithin the tubular spindle A, and having a rotatable and sliding bearing therein, is a shaft, H, at the outer end provided with a squared portion, h, formed thereon to receive the socket 7a of a crank-handle, K, its other end project- (No modeLl ing beyond thcinncr end ofspindle A,and there provided with an enlargement, L, having therein an axial opening,M, ofconicahconoidal,

or funnel shape, as indicated at 'HL, and of a shape corresponding with that of the end of a valve-plug, said opening M having its surface hurred, milled, roughened, or otherwise prepared for cutting or grinding. A valve'plug,

N, to be trned is first centered by its stem N within the clamp-jaws Cby the turning of the screw-nut G on the threaded spindle A against the sleeve F, forcing it inwardly, and through the links E forcing the clamp-arms B forward, they swinging upon their pivots at a on the 55 end of said fixed spindle, their enner ends, 0, being carried inwardly toward the axial line of the said spindle and upon the valve-stem, the pivoted clamp-jaws G insuring an adjustment and parallel bearing upon said stem. Then upon attaching the crank-arm A onto the end of burr-shaft H, forcing said shaft inwardly for its conical burred opening to lie upon and around the end and edge of the valve-plug, and rotating said shaft, a cutting or grinding of said valve-plug is secured perfeet-1y true and concentric with the axial line of its stern, and all in a most simple, easy, and practical manner, it being observed that the jaws are capable of such a spread from each other as to permit the passage of the burringshaft between them for its withdrawal from the tubular bearing-socket A, enabling the substitutions of burr-shafts having heads with barring or grinding surfaces of different charenters or forms suitable for use upon other articles clamped by said jaws O Cas, for instance,

a valve casing or body may he clamped and centered with the axial line of its seat coincident with the axial line of shaft H, which is 0 provided with a conical-shaped head having exterior burr or grinding surface.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination, with a tubular spindle having clamp-arms pivoted thereto, of a sliding sleeve fitting upon thcspindle and links connecting said clamp-arms and sleeve, sub stantially as and for the purpose described.

2. The combination, with a screw-threaded tubular spindle having clamp-arms pivoted thereto, of a sliding sleeve fitting upon the spindle, links connecting said clamp-arms and sleeve, and screw-nut G, substantially as and for the purpose described.

3. The combination, with a tubular spindle having clamp-arms pivoted thereto provided with pivoted clamp-jaws G, of a sliding sleeve fitting upon the spindle and links connecting said clamp-arms and sleeve, substantially as and for the purpose described.

4. The combination, with a screw-threaded tubular spindle having clamp-arms pivoted thereto provided with pivoted clamp-jaws, of a sliding sleeve fitting upon the spindle, links connecting said clamp-arms and sleeve, and screw-nut G, substantially as and for the purpose described.

' 5. The combination, with a tubular spindle having clamp-arms pivoted thereto, a sliding sleeve fitting upon the spindle, and links connecting said clamp-arms and sleeve, of a shaft having rotatable and sliding bearing in said sleeve, provided with a burring or grinding head, substantially as and for the purpose described.

6. The combination, with a tubular spindle having clamparms pivoted thereto, a sliding sleeve fitting upon the spindle, and links conmeeting said clamp-arms and sleeve, ofa shaft having rotatable and sliding bearing in said 0 sleeve,provided with a funnel-shaped opening, M, with burring or grinding surface, substantially as and for the purpose described.

7. The combination, with a'screw-threaded tubular spindle having clamp-arms pivoted 5 thereto, a sliding sleeve fitting upon the spindle, links connecting said clamp -arms and sleeve, and screw-nut, of a shaft having rotatable and sliding bearing in said spindle, pro vided with a burring or grinding head, sub 0 stantially as and for the purpose described.

'8. The combination, with a screw-threaded tubular spindle, A, having clamp-arms B B pivoted thereto, provided with pivoted clampjaws O G, a sliding sleeve, F, fitting upon the 5 spindle, links E E, connecting said clamp-arms and sleeve, and screw-nut G, of a shaft, H, having enlargement L, with funnel shaped opening M, with burring or grinding surface, and provided with crank-handle K, all sub- 50 stantially as shown and described, for the purpose specified.

DANIEL F. DUNN.

\Vitnesses:

J. WV. FRIESTONE, O. O. \VILLIAMs.