US1384456A

US1384456A - Method of repairing scored cylinders

Info

Publication number: US1384456A
Application number: US294126A
Authority: US
Inventors: Zebulon J Eury
Original assignee: Individual
Current assignee: Individual
Priority date: 1919-05-01
Filing date: 1919-05-01
Publication date: 1921-07-12
Anticipated expiration: 1938-07-12

Description

Z. J. EURY.

METHOD OF REPAIRING SCORED CYLINDERS. APPLICATION FILED MAY 1. 1919. RENEWED JUNE 6, I921.

.1 84,456. E Patented July 12, 1921.

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R R w 2 R w R v 0 a v R J R R R I I R R r UNITED STATES PATENT OFFICE.

METHOD OF REPAIRING SCOBED CYLINDERS.

Application filed May 1, 1919, Serial No. 294,126. Renewed June 6, 1921.

To all whom it may concern:

Be it known that I ZEBULON J. EURY,a citizen of the United states of America, residing at Forth W'orth, in the county of Tar-rant and State of Texas, have invented certain new and useful Improvements in Methods of Repairing Scored Cylinders, of which the following is a specification.

My inventionrelates' to improvements in repairing scored cylinders and particularly for repairing scored cylinders of internal combustion engines; and the object is to provide a simple and highly eflicient method of repairing scored cylinders and which will make the cylinders as smooth and hard as they were originally before being scored, and to fill the scores with a composition of metal which will be as firm as the original metal of the cylinder. Other objects and advantages will be fully explained in the following description and the invention will be more particularly pointed out in the claims.

Reference is had to the accompanying drawings which form a part of the application.

Figure 1 is a broken section of a cylinder, showing several repairs of scores. Fig. 2 is a cross section of the repaired score at a.

Fig. 3 is a cross section of the repaired score at b. Fig. 4 is a cross-section of the repaired score at 0.

Similar characters of reference are used to indicate the same parts throughout the several views.

In repairing the scores, the score is made deeper and the edges are undercut, or cut so that the metal added will be dove-tailed into the surface of the cylinder as shown at a, Figs. 1 and 2. The added metal may be melted and forced into the score by an acetylene torch. An alloy of zinc, tin, and silver may be used as hereinafter specified, and when prepared, this alloy is forced into the scored portion until the metal is firmly pressed into score until the metal fills all the undercut edges. The surface of the metal is then ground smooth to conform to the contour of the interior surface of the cylinder. This alloy has a high melting point and when carefully placed and anchored in the score in the manner described, the interior surface of the cylinder is as smooth as the cylinder originally appeared before being scored.-

Sp'ecification of Letters Patent.

Patented July12, 1921.

Serial No. 475,558.

Another method of anchoring the repair alloy in the cylinder is to drill out the score deeper and undercut the edges, as shown at 6, Figs. 1 and 3. Small holes are then made through the undercut edges so that when the alloy is forced into the score, the alloy Wlll pro ect through the openings in the overhanging edges, as illustrated in Fig. 3. After the alloy is forced into the drilled out score and through the openings to form the pro ectiOns g, the alloy is ground smooth to conform to the interior surface of the cylinder. In this manner the alloy is firmly an- 'chored to the interior of the cylinder.

Another method of anchoring the repair alloy to the cylinder is to drill out the score as shown at 0 in Figs. 1 and 4. After the score is drilled out, small cavities h are made in the bottom of the score, as shown at h in the score (1. The alloy is then forced into the score and into the cavities it. The alloy is then ground smooth as before. When so repaired, the alloy is firmly anchored in the score and cannot be removed by any ordinary service. Different alloys may be used, such as copper, tin, and silver combined.

The composition may consist of block tin containing 2% of silver and 1% of nickel, or the same composition with T}-% of zinc added, or of silver solder and 1 to 2% of nickel, or tin and silver solder with 3% to 8% nickel added.

Variations in the method described may be made without departing from my invention.

What I claim, is,-

1. The method herein described which consists in drilling scores in cylinders and forming undercut edges with perforations therein, forming and forcing an alloy of high melting point into and filling the scores and interlocking the alloy in said perforations, and then polishing the alloy and making the same conform to the interior surface of the cylinder.

2. The method herein described which consists in drilling scores in cylinders with undercut edges and forming cavities in the scores, forming and forcing an alloy of high melting point by blow torch into the scores and into the cavities therein for anchoring the alloy in the cavities in the scores, and then polishing the alloy to make the same conform to the interior surface of the cylinder;

3. The method herein described for rewhile in lastic condition. and then polishpairing scored cylinders of internal combusing the a loy to make the Same conform to tionengines which consists in drilhng the the interior surface of the cylinder. scores to form openings with undercut edges In testimon .whereof, I set my hand this 5 and forming cavities therein, forming and 28th day of pril, 1919.

forcing an alloy of zinc, tin, and silver by ZEBULON J. EURY.

blow torch into the scores and the cavities