US831151A - Process of grinding piston-rings. - Google Patents

Process of grinding piston-rings. Download PDF

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Publication number
US831151A
US831151A US28729205A US1905287292A US831151A US 831151 A US831151 A US 831151A US 28729205 A US28729205 A US 28729205A US 1905287292 A US1905287292 A US 1905287292A US 831151 A US831151 A US 831151A
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Prior art keywords
rings
piston
grinding
ground
grinding piston
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Expired - Lifetime
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US28729205A
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Paul Gaeth
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/04—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49274—Piston ring or piston packing making
    • Y10T29/49282—Piston ring or piston packing making including grinding or honing

Definitions

  • This invention is a process of grinding and fitting pistons and piston packing-rings.
  • the rings in place. and prevents them from yielding inwardly under the pressure of the Said substance is afterward melted out, and the rings are left in place at a true and correct fit.
  • Figure 1 being a sectional elevation showing the manner of locating
  • Fig. 2 is a section of the piston, showing the rings in position and the means for introducing the fusible substance behind the same.
  • the piston and rings are turned to the size wanted plus the allowance for grinding.
  • the rings which are indicated at 6, are then slipped in position in their grooves in the piston, so tlfat all thelaps 7 come in a straight line down the side of the iston.
  • the sleeve 8 is then slipped over t e piston, thus centering the rin s in lace on the piston. Holes are then ille lengthwise through the walls of the iston 9 and through the ends of the rin s a jacent to the lap to receive wires 10, w 'ch thus hold the rings and prevent them from turning or spreading apart during the grinding operation.
  • the piston which,as shown, is of the trunk type, is turned upside down and filled with a readily-fusible substance, such as wax, and this is heated, causing the substance to. run through the holes 11 into the spaces 12 in the grooves under the rings.
  • a readily-fusible substance such as wax
  • the piston and its rings are ready for grinding and can be ground and polished by any of the approved machines or means for that purpose.
  • the rings are held against ro-,
  • wires 10 are then withdrawn and the holes in which they were contained are plugged up. Pins are also put into the holes 11.

Description

PATENTED SEPT. 18,1906.
P. GARTH.
PROCESS OF GRINDING PISTON RINGS.
APPLICATION IILILD NOV. 14, 1905.
In. J v
' other reasons.
UNITE STATES PATENT oFFIonj Specification of Letters Patent.
Application filed November 14,1905. Serial No. 287,292.
To-aZZ whom, it may concern.-
Be it known that I, PAUL GAETH, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented new and useful Improvements in Processes of Grinding Piston-Rings, of which the following is-a specification.
This invention is a process of grinding and fitting pistons and piston packing-rings.
In the existing state of the industry the piston and rings are ground separately, the ringsbeing ound before they are placed in postion on t e piston. cause the best fit is not. obtained and for By means of the present invention the piston and rings are ground at the same time and while the latter are in position. means must be provided to'hold t em out flush or in proper position during the grinding operation. This is done by running in some readily-fusible substance under or behind the rings, which when it solidifies holds centering the rings on the piston.
grinding implement.
the rings in place. and prevents them from yielding inwardly under the pressure of the Said substance is afterward melted out, and the rings are left in place at a true and correct fit.
The invention is illustrated in the accompanying drawings, Figure 1 being a sectional elevation showing the manner of locating and Fig. 2 is a section of the piston, showing the rings in position and the means for introducing the fusible substance behind the same.
Primarily the piston and ringsare turned to the size wanted plus the allowance for grinding. The rings, which are indicated at 6, are then slipped in position in their grooves in the piston, so tlfat all thelaps 7 come in a straight line down the side of the iston. The sleeve 8 is then slipped over t e piston, thus centering the rin s in lace on the piston. Holes are then ille lengthwise through the walls of the iston 9 and through the ends of the rin s a jacent to the lap to receive wires 10, w 'ch thus hold the rings and prevent them from turning or spreading apart during the grinding operation. After this is done the piston, which,as shown, is of the trunk type, is turned upside down and filled with a readily-fusible substance, such as wax, and this is heated, causing the substance to. run through the holes 11 into the spaces 12 in the grooves under the rings.
This is defective, be
Since the rings yield-under ressure,
cooled and the fusible substance solidified.
Patented Sept. 18,1906. I
Now the piston and its rings are ready for grinding and can be ground and polished by any of the approved machines or means for that purpose. The rings are held against ro-,
tation and also against yielding inwardly and are so acted upon by the grinding instruments the same as the piston'and are ground to the true surface and accurate diameter desired. After the piston and rings are ground to size and finish the piston is reheated and the readily-fusible substance is run out. The
wires 10 are then withdrawn and the holes in which they were contained are plugged up. Pins are also put into the holes 11.
The process is not confined to a piston or its rings nor to the particular type of piston shown for the purpose of illustration, but may; be applied to .any analogous device where a yielding acking-ring or surface is to be ground or po ished in connection with a relatively rigid p'art or surface. The method described saves the labor of two separate operations upon the respective parts and also insures a-better fit and more correct size.
I claim; 7 4
1. The method of grinding. simultaneously a relatively rigid part and a relatively yielding part carried thereby, consisting in supporting the latter in unyielding position upon the former durin the grinding operation.
2. The metho of truing and grinding the surfaces of two adjacent parts of the same structure, one of said parts being relatively rigid and the other yielding, consisting in supporting the latter in unyielding position .upon the former by means of a readily-fusible substance during the truing and grinding operation.
3. The method of grinding packing-rings, consisting in placing the same in the grooves in the member in which they are to remain, introducing areadily-fusible substancein the grooves under the rings, applying the memton, and supporting said rings unyieldingly in such position during the grinding operation. I
.IIO
5. The method of simultaneously grinding I In testimony whereof I have signed my a piston and its packin -rings, consisting in name to this specification in the presence of centering and fixing. sai .rings in their places two subscribing Witnesses. on the piston'with their surfaces'fiush With. v PAUL GAETH. 5 the surface of the piston, and holding said Witnesses: 1
rings in said'position unyieldingly during the JOHN A. BOMMHALRDT, grinding operation. ANDREW GRIEBEL.
US28729205A 1905-11-14 1905-11-14 Process of grinding piston-rings. Expired - Lifetime US831151A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3093891A (en) * 1959-07-27 1963-06-18 Gen Motors Corp Method of producing a shock absorber with sleeved piston
US3705934A (en) * 1968-07-12 1972-12-12 Michele Giannini Method for the covering of moldable articles (in particular, the heels and soles of shoes) and mold for application of said method
US4463487A (en) * 1981-04-30 1984-08-07 Associated Engineering Italy S.P.A. Method of manufacturing piston rings

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3093891A (en) * 1959-07-27 1963-06-18 Gen Motors Corp Method of producing a shock absorber with sleeved piston
US3705934A (en) * 1968-07-12 1972-12-12 Michele Giannini Method for the covering of moldable articles (in particular, the heels and soles of shoes) and mold for application of said method
US4463487A (en) * 1981-04-30 1984-08-07 Associated Engineering Italy S.P.A. Method of manufacturing piston rings

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