US1444981A - Piston-ring remover - Google Patents

Description

Feb. 13, 1923.

V. A. NELSON.

PISTON RING REMOVER.

FILED OCT. 6.192I. l

Patented Feb. i3, i923.

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Application :tiled @stehe-r 6, 1921. Serial No, 505,875.

To all/wkomz' may concern: l Y

Be it known that l, Vieron A, InLsoN, a citizen'of the United States, and a resident of the city of Portland, county of Multnomah, and State ci Oregon, have invented a certain new and useful Improvement in Fis ton-Ring Removers, of whichv the 'following is J. speciiication.

'This invention relates to piston ring removers ot the type shown in the .patent 'to Charles O. Hammontree and myself, dated April 20, 1920, No. 1,337,600, which vis adapted to be used on a variety of diii'erent piston rings.

The deiiciency which l experienced in the tool described by said patent is, that devices, or so called jaws, of the tool which function to engage lthe ends of the piston rings, so that the ends may be spread, would have to be oi'c' a form corresponding tothe said ends; and in consequence at least 'two tools would be required-one for oblique ends another for square ends, which forms represent the standard types of piston rings at present in use. a D

The primary object of my invention is to provide a tool which is adapted to lbe used on either of said standard types of lpiston rings. 0

Another object of my invention 1s to provide a tool which is inexpensive to manufacture, in that it has but few parts, kand the pieces may7 be stamped out of sheet metal.

The construction and use of my improved tool are shown in the accompanying drawings, in which:

Fig. l is a side view with the remover partially opening a piston ring and indicates the action when the ring is fully opened;

Fig. 2 is a cross sectional view of Fig. l on the line 2 2; j

Fig. 3 is a bottom view of my tool;

Figs. 4, 5 and 6 are views showing the application of my tool to the die'rent standard designs of piston rings;

Fig. 7 shows a sectional detail of construction' Fig` 8 is a perspective view oi the fixed jaw 7L;

Fig. 9 is a cross sectional view on the same line as Fig. 7 and shows the relation oi' the dierent parts to each other; and

Fig. 10 is a perspective view of the removable jaw.

In Figs. 4f, 5 and 6 are shown the Ldifferent standard types of piston rings to which l j leavin 0" a referred. Note that the piston rings shown in Figs. i and 5 lhave obliqueends, while the piston ring shown in Fig. has square ends, that is each end has a rectangular jog G -g projecting lip; the lips of the two ends sliding by each other. l. have designed this ytool so that it `will open all ci the standardrings with the same jaw. i do this by placing they projecting lingers ft2 and e2 e5 slightly below the longitudinal center line of the body d. This allows the {inger- LZ to slip by the projecting lip in Fig. 6 and to seat firmly against the rectangular jog y as shown in the same figure. This feature will n'ot interfere with the proper operating ot oblique end rings as the lips lil and al prevent transverse movement.' l

Another bigadvantage of my present invention is that it can be manufactured very cheaply. All of the parts are made from sheet metal and can be stamped and formed by simple machinery and the only assembling will be to drive one rivet. This will enable to compete in `price with other similar products.

The movable jaw ai is connected to the handle 7) by means of the rivet c and this whole assembly is movably connected to the body d. The body Z is made up of a handle e, a slot f, an oitset g, a fixed jaw It composed of side lips tl, and a finger 7a2, all of which are stamped from a single piece of material.

The movable jaw a is also constructed with side lips al, and a projecting finger a2. The handle b is made with a depression whichis as deep as the thickness of the body d, as shown in F ig. 9, and thus eliminates the necessity or a separate guide plate. The off-set g brings the movable jaw to a position in the same plane as the fixed jaw 71,.

The operation of this piston ring remover is approximately the same as the type shown y in the patent issued to Charles O. Hammon- Y tree and myseli' dated April`20, 1920,'Number 1,337,600. lt is roughly as follows:

When an operator desires to remove a piston ring from its seat on the pistnor desires to insert a ring in position on the piston he adjusts the tool so that the fingers a2 and h2 are pressed against each other. These lingers kcan then be inserted in the gap 'bietween the ends of the ringl and the side flanges o, and Z9; then slip on either side of ring to prevent transverse movement. The handles 110 e and are then drawn together and the ring is then expanded and can be slipped over the ehonldef of the piston and the. ring will resnnle its onlginol shape and the tool can be leleased as' soon as the contracting' pressure on the handles is removed. f

l claim:

l. ln aY toolv for removing piston rings 'W'o connected members one of which is relatively slidable lengthwise on LUne oli-her, each lnelfnbel` benul@` pl'ovided with a jew for engaging onel of the piston ring, and'eeoh mw @ennuie-lng parallel spaced langes and pin-like shoulder located between sind nges banning one end o'" ne channel benges.

described in dann l dsnt die said 'pin-like Shoulders 'th/enel! other end loopted nem-e1' one side olf the jaw channels for Jche purpose spec'e'd.

` 8. A tool for removing piston rings oompl'lsng o body-piece having :L longitudinally extending slolI out outntellnediote its ends7 a Companion piece seated on the body piece, having a, portion thereof pressed out to onn nn (along-Med lug adapted to bear in seid slot7 and e jalw e-lixed on seid lngon the under sdefof'the bodypeoe7 thereby sldably connecting the seid pieces, the comprising parallel spaced flanges and ni'pn-lke shoulderloceted between said'ilenges: and barring one end lof the channel between the letter, lle body piece-being p'ovded with a jew also 'Comprising parallely spaced lzlnges and e pin-like shonldel looated tl'le-re-between bom-ing one vend of the channelbetWeen-the L" flanges, and both pieces being proyded'Wt-h handles. y

VCTR A. NELSON.

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