US1220470A - Process of forming brake-rings. - Google Patents

Process of forming brake-rings. Download PDF

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Publication number
US1220470A
US1220470A US6710815A US6710815A US1220470A US 1220470 A US1220470 A US 1220470A US 6710815 A US6710815 A US 6710815A US 6710815 A US6710815 A US 6710815A US 1220470 A US1220470 A US 1220470A
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US
United States
Prior art keywords
web
brake
rings
semi
iron
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US6710815A
Inventor
John F Smith
Guy H Williams
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SAFETY FIRST BRAKE SHOE CO Inc
Original Assignee
SAFETY FIRST BRAKE SHOE CO Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SAFETY FIRST BRAKE SHOE CO Inc filed Critical SAFETY FIRST BRAKE SHOE CO Inc
Priority to US6710815A priority Critical patent/US1220470A/en
Application granted granted Critical
Publication of US1220470A publication Critical patent/US1220470A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • 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
    • Y10T29/49995—Shaping one-piece blank by removing material
    • Y10T29/49996—Successive distinct removal operations

Definitions

  • his invention relates toa process of manufacturing brake rings from steel T iron and has for its principal objecflto render the process of manufacture of brake rmgs cheaper and more rapid; to provide a superior brake ring as to quality of material.
  • cast iron is generally usedwhich possesses little tensile strength, deforms in casting, requires machine finishing, etc.
  • a brake ring is formed in halves from a piece of T iron by cold cutting and forming.
  • the accompanying drawings illustrate our brake ring process.
  • Figure 1 is a plan View of a complete brake ring.
  • Fig. 2 is a half sectional elevation of Fig. 1.
  • Fig. 3 is a detail showing the end of the T iron before bending.
  • the brake ring When completed the brake ring is in the form of apair of similar semi-circular members of T iron With the flange outward. Friction wearing strips 3 are secured to the outside of the ring. Two of the adjacent ends of the semi-circular members are cut away on the web as at 4 and the end of the flange bent up at right angles against the end of the web. The other adjacent ends have semi-circles punched from them so that when the ends of Washington, have in i are brought together, a complete hole as at 5 is formed. Both semi-circular members are cut away centrally on the web as at 6. In our process the length of material is first cut from stock, the end of the web cut away as at 4 and the flange end bent up. The opposite end is punched as at 5 and the web cut away as at 6. stamped to receive springs 8.
  • Our brake rings may be formed forging or by other hot processes, but I prefer cold cutting and forming as it increases the tensile resistance of the metal.
  • Holes 7 may also be,

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Description

J. F. SMITH & G. H WILLIAMS.
PROCESS OF FORMING BRAKE RINGS.
APPLICATION FILED DEC.14,1915.
1320,4770. Patented Man 27,1917.
Mai;
A TTOR/VE) OF WASHINGTON.
PROCESS OF FORMING BRAKE-BIN GS.
Laeomo.
Specification of Letters Patent.
Patented Mar. 27, 11917.
To all whom it may concern.-
Be it known that we, JOHN F. SMITH I and GUY H. WILLIAMS, citizens of the United ings, numeral 1 indicates States, and residents of Seattle, in the county of King and State vented certain new and useful Improvements in Processes of Forming Brake-Rings, of which the following is a full, true, and exact specification.
his invention relates toa process of manufacturing brake rings from steel T iron and has for its principal objecflto render the process of manufacture of brake rmgs cheaper and more rapid; to provide a superior brake ring as to quality of material. In the manufacture of brake rings, cast iron is generally usedwhich possesses little tensile strength, deforms in casting, requires machine finishing, etc. By means of our process, a brake ring is formed in halves from a piece of T iron by cold cutting and forming. The accompanying drawings illustrate our brake ring process.
In the drawings, Figure 1 is a plan View of a complete brake ring. Fig. 2 is a half sectional elevation of Fig. 1. Fig. 3 is a detail showing the end of the T iron before bending.
Referring more particularly to the drawthe flange of a T v iron and 2 the web. When completed the brake ring is in the form of apair of similar semi-circular members of T iron With the flange outward. Friction wearing strips 3 are secured to the outside of the ring. Two of the adjacent ends of the semi-circular members are cut away on the web as at 4 and the end of the flange bent up at right angles against the end of the web. The other adjacent ends have semi-circles punched from them so that when the ends of Washington, have in i are brought together, a complete hole as at 5 is formed. Both semi-circular members are cut away centrally on the web as at 6. In our process the length of material is first cut from stock, the end of the web cut away as at 4 and the flange end bent up. The opposite end is punched as at 5 and the web cut away as at 6. stamped to receive springs 8.
Our brake rings may be formed forging or by other hot processes, but I prefer cold cutting and forming as it increases the tensile resistance of the metal.
aims:
l. The process of forming semi-circular brake rings from T iron, consisting in cutting away the web at one end of the piece of T iron, bending the flange of the T back at right angles and against the end of the web, cold bending the piece of T iron into a semicircular form with the web innermost, punchby drop 1ng an open semi-circular notch in the end of the web opposite the said cut away end, and shearing away an edge portion of the web midway between the two ends.
2. The process of forming semi-circular brake ring members, consisting in bending a piece of T iron in a semi-circle with the web innermost, cutting away a square portion of the web of the T iron at( one end of the semi-circular member and bending the free end of the flange against the end of the web and on a diainetrical line, punchin an open semi-circular notch in the web 0 the other end of the semi-circular member, and shearing a crescent shaped piece from the edge of the web midway of the ends of the semi-circular member.
JOHN F. SMITH. GUY HEWILLIAMS.
Holes 7 may also be,
US6710815A 1915-12-14 1915-12-14 Process of forming brake-rings. Expired - Lifetime US1220470A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US6710815A US1220470A (en) 1915-12-14 1915-12-14 Process of forming brake-rings.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6710815A US1220470A (en) 1915-12-14 1915-12-14 Process of forming brake-rings.

Publications (1)

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US1220470A true US1220470A (en) 1917-03-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE975677C (en) * 1949-11-01 1962-04-26 Daimler Benz Ag Process for one or both sides of a hub rim from a disc with holes in the center of the axis

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE975677C (en) * 1949-11-01 1962-04-26 Daimler Benz Ag Process for one or both sides of a hub rim from a disc with holes in the center of the axis

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