US470295A

US470295A - Metal-reamer

Info

Publication number: US470295A
Authority: US
Publication date: 1892-03-08
Anticipated expiration: 1909-03-08

Description

(No'Model.) P. J. PELDT 8u F. C. MAHLER.

METAL BEAMER.

No. 470,295. Patented Mar. 8, 1892,v

UNITED STATES PATENT OEEICE.

FERDINAND J. FELDT AND FRANK C. MAHLER, OF PEORIA, ILLINOIS.

M ETAL-REAM ER.

SPECIFICATION forming part Of Letters Patent N0. 470,295, dated March 8, 1892.

Application filed December 2, 1891. Serial No. 413,780. (No model.)

To all whom it may concern,.-

Be it known that we, FERDINAND J. FELDT and FRANK C. MAHLER, citizens of the United States, residing at Peoria, in the county of Peoria and State of Illinois, have invented certain new and useful Improvements in Metal- Reamers; and we do hereby declare that the following is afull, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to certain new and useful improvements in metal-reamers by means of which a reamer is provided, simple in construction and effective for the purpose designed, durable, and cheap in first cost.

More particularly our invention relates to that class of reamers adapted for reaining out cocks, but may be used generally for reamin g out metal tubes, &c.

The particular features of our invention consist, essentially, of the form of the reamingtool, the same being semicircular, and of a detachable blade used in connection therewith, and the means of securing thereto an adjustment thereon, as will be more fully shown hereinafter.

That our invention may be more fully understood, reference is had to the accompanying drawings, in which- Figure l shows the metal-reamer with a portion thereof broken away to show the means of securing the cutting-blade to the body of the tool. Fig. 2 is a plan view of the upper face of the tool, showing the adjustment of the blade, (Src. Fig. 3 is a cut sectional view or transverse section of the tool.

In the figures, B represents a conicallyshaped section or body tapering from its base to its extremity and provided at its base with the stem C, purposed to iit within the socket of the chuck and being recessed at its upper face to receive the cutting-blade A.

a a a are set-screws, bearing through the slots fff in the blade Aand within threaded openings in the body B of the tool to secure the Said blade in proper adjustment for operation.

c k are threaded openings purposed to receive the headless screw k', which said screw is in alignment with and is designed to bear against the back of the blade A to facilitate its adjustment and to resist the tendency of the blade to be pushed backward by contact with hard metals.

t' represents the cutting-edge of the blade,

Tools that have heretofore been constructed for the purpose herein specified have been either wholly inadequate for the purpose designed or lack the element of durability pos 7o sessed by our improved tool. Reamingtools have been made with bodies similar toB with the edge of the metal formed into a cutting-tool, and when the same became dulled by use it could only be sharpened by cuttingaway the entire body of the tool until a proper edge was presented, this requiring a great amount of labor and time, and as they were required to be sharpened quite frequently, owing to the extreme hardness of the metal that might be designed to be cut and by the presence of more or less sand or gritv within the cocks which they were required to ream out, acting to dull the tool or the edge thereof, and the sharpening process will constantly reduce the size of the tool and render the same useless. Tools were also constructed in the form of a blade, but were not practical in operation, as it was somewhat flexible and had a tendency to bear away from the metal by contact therewith, thus cutting an uneven and irregular opening or leaving the surface thereof rough. All the disadvantages incident to the use of the styles of tool just mentioned are overcome by the use of our improved reaming-tool.

The operation of the device is apparent,

the tool being first fixed to a rapidly-rotating medium, the connection therewith being made through and by means of the stem C. The cock is run upon the tool and is readily reamed out, ,the hole therein being made larger the farther the same is pushed upon the tool. Vhen the blade becomes dull, the

IOO

same may be detached from the body of the tool by removing the set-screws al ct ct and ground or sharpened and again easily re! placed and secured, or the blade may be ground without detaching same by merely sllpplng saine forward in slots fff, and to facilitate the adjustment of the blade A the headless screws L are provided, that bear against the back edge of the blade, and by screwing the same forward when the setscrews are slightly loosened the edge of the blade is forced outward, and the blade is held 1n this position by contact with the ends of the said screws and by the set-screws d ad, &c.

T he detailed structure of the tool may be varled to suit the application in which it may be desired to be used, and also the material used in its construction may be of anything suitable for the purpose. r,She blades may be attached to a body made reun ding, fiat, square, or 1n any form.

Having thus fully described our invention, what we claim, and desire to secure by Letters Patent,Y is- In a reaming-tool, the combination, with the half-circular body B, tapering from base to extremity and provided with the stem C and raised portions V and m and having the threaded openings and the headless screws t", of the blade A, provided with the slots f f, against the back of which the headless screws 7o bear, and secured to the metal body B by means of the set-screws a a a, hearing in threaded openings inthe metal body, all substantially as described and setforth.

In testimony whereof we aix our signatures in presence of two witnesses.

FERDINAND J. FELDT. FRANK C. MAHLER. XVitnesses:

EDWARD Snrrz, CHARLES R. UHLMANN.