US1441082A - Method of forming pistons - Google Patents

Method of forming pistons Download PDF

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Publication number
US1441082A
US1441082A US396556A US39655620A US1441082A US 1441082 A US1441082 A US 1441082A US 396556 A US396556 A US 396556A US 39655620 A US39655620 A US 39655620A US 1441082 A US1441082 A US 1441082A
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United States
Prior art keywords
piston
guide members
head
forming
cup shaped
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Expired - Lifetime
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US396556A
Inventor
Walter G Heginbottom
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JACOB R FRANCIS
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JACOB R FRANCIS
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Publication date
Application filed by JACOB R FRANCIS filed Critical JACOB R FRANCIS
Priority to US396556A priority Critical patent/US1441082A/en
Application granted granted Critical
Publication of US1441082A publication Critical patent/US1441082A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/10—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass pistons
    • 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
    • Y10T29/49249—Piston making
    • Y10T29/49265—Ring groove forming or finishing

Definitions

  • This invention relates to a method of forming pistons constructed in accordance with the invention disclosed in my application for spring piston filed June 16, 1920, Serial No. 389,517, the object being to provide a method by means of which a piston can be formed very cheaply.
  • a further object of the invention is to provide a method of forming a sprlng piston wherein the piston is provided with guide portions connectedto the disk shaped portion of the head in such a manner that the guide portions can expand and contract so as to fit the cylinder of the internal combustion engine in order to prevent piston 5 slap.
  • Another and further object of the invention is to provide a method of forming the particular construction of piston wherein the piston composed of the head and guide members and wrist pin bosses are cast as a unit and the guide members separated from the head proper to produce the spring guide members in such a manner that the entire piston can be constructed out of aluminum and machined to the proper size without placing the material under excessive strain thereby producing a piston which will fit the cylinder to a nicety at a very small cost.
  • Figure 1 is a side elevation of a piston 5 showing the first step in the operation of forming the same.
  • Figure 2 is a similar view showing the complete piston.
  • the same is preferably cast of aluminum and comprises a cup shaped head 1 having skirt portions 2 forming circular guide members which are connected to t 2 disk portion of the head 1 by 5 arms 3, the arms being connected to the 1920.
  • Serial No. 396,556 is preferably cast of aluminum and comprises a cup shaped head 1 having skirt portions 2 forming circular guide members which are connected to t 2 disk portion of the head 1 by 5 arms 3, the arms being connected to the 1920.
  • the head of the piston is provided with wrist pin bosses 4 between the guide members 2 havin supporting braces 5 and are so constructe as to retard the travel of heat from the head to the wrist pin bosses.
  • piston The detail construction of piston is fully disclosed in my companion application covering the piston construction and this application covers the method and consists in casting a piston with a cup shaped head and circular guide members connected to the disk of the head by arms and then severing the guide members from the cup shaped head in order to produce spring guide members.
  • Vhat I claim is 1. The method of forming a sprin piston consisting in casting a cup shape piston with guide members having a connection with thedisk portion of the cup shaped piston and then severing the guide members from the wall of the cup shaped head.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Description

Jan. 2, 1923.
,W. G. HEGINBOTTOIVI.
METHOD OF FORMING PISTONS.
FILED JULY 15, 1920.
Patented Jan. 2, 11923.
UNITED stares PATENT QFFHGEO WALTER G. HJEGINBOTTOM, 01E FLINT, MICHIGAN, ASSIGNOR F ONE-I413 T0 JACOB R. FRANCIS, 01E FLINT, MICHIGAN.
METHOD OF FORMING PISTONS.
Application filed July 15,
To all whom it may concern:
Be it known that I, VALTER G. HEoINBoT- TOM, a citizen of the United States, residing at Flint, in the county of Genesee and State of Michigan, have invented certain new and useful Improvements in Methods of Forming Pistons. of which the following is a specification. reference being had therein to the accompanying drawing.
This invention relates to a method of forming pistons constructed in accordance with the invention disclosed in my application for spring piston filed June 16, 1920, Serial No. 389,517, the object being to provide a method by means of which a piston can be formed very cheaply.
A further object of the invention is to provide a method of forming a sprlng piston wherein the piston is provided with guide portions connectedto the disk shaped portion of the head in such a manner that the guide portions can expand and contract so as to fit the cylinder of the internal combustion engine in order to prevent piston 5 slap.
Another and further object of the invention is to provide a method of forming the particular construction of piston wherein the piston composed of the head and guide members and wrist pin bosses are cast as a unit and the guide members separated from the head proper to produce the spring guide members in such a manner that the entire piston can be constructed out of aluminum and machined to the proper size without placing the material under excessive strain thereby producing a piston which will fit the cylinder to a nicety at a very small cost.
Other and further objects and advantages 3 of the invention will be hereinafter set forth and the novel features thereof defined by the appended claims.
In the drawings,
Figure 1 is a side elevation of a piston 5 showing the first step in the operation of forming the same; and
Figure 2 is a similar view showing the complete piston.
In carrying out my method of forming the piston as disclosed the same is preferably cast of aluminum and comprises a cup shaped head 1 having skirt portions 2 forming circular guide members which are connected to t 2 disk portion of the head 1 by 5 arms 3, the arms being connected to the 1920. Serial No. 396,556.
guide portions substantially mid-way their length and extending into the cup shape of the piston and connected at a point adjacent the outer edge thereof. The head of the piston is provided with wrist pin bosses 4 between the guide members 2 havin supporting braces 5 and are so constructe as to retard the travel of heat from the head to the wrist pin bosses.
lieve itself and allows the two sections of the piston to finish in perfect alignment.
The detail construction of piston is fully disclosed in my companion application covering the piston construction and this application covers the method and consists in casting a piston with a cup shaped head and circular guide members connected to the disk of the head by arms and then severing the guide members from the cup shaped head in order to produce spring guide members.
From the foregoing description it will beseen that I have produced a method of forming a spring piston which consists in casting a piston with a cup shaped head having circular guide members connected thereto by arms and then machining the entire surface of the piston in order to produce a finished head with grooves for the piston ring and then severing the skirt or guide portions of the head and grinding the guide members which are 'carried by the arms to the proper size in order to produce spring guide members for allowing the same to expand and contract.
Vhat I claim is 1. The method of forming a sprin piston consisting in casting a cup shape piston with guide members having a connection with thedisk portion of the cup shaped piston and then severing the guide members from the wall of the cup shaped head.
2. The method of forming a piston which consists in casting a cup shaped piston with circular guide members extending from the walls thereof having a connection with the disk shaped portion'of the piston by arms, then machining the entire surface of the piston in order to produce a head with ring grooves, then severing the guide members from the cup shaped piston and then grinding the guide members to the proper size.
3. The method of forming a spring piston I consisting in casting a cup shaped piston out of aluminum with guide members connected mid-way their length to the disk portion of the head by arms and then severing the guide members from the head proper.
4;. The method of forming a spring-piston which consists in casting a cup shaped piston with circular skirt portions connected the cup shaped portion of the piston head,
and then grinding the guide members to the proper mm.
In testimony whereof I have hereunto affixed my signature in the presence of two witnesses.
WALTER G. HEGINBOTTOM.
Witnesses:
WILLIAM L. TIKKA, G120. TAFT.
US396556A 1920-07-15 1920-07-15 Method of forming pistons Expired - Lifetime US1441082A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2966382A (en) * 1958-05-26 1960-12-27 Ernest R Olsen Wear-resistant piston

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2966382A (en) * 1958-05-26 1960-12-27 Ernest R Olsen Wear-resistant piston

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