US2001483A - Method of making jewelry chains - Google Patents

Method of making jewelry chains Download PDF

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Publication number
US2001483A
US2001483A US4979A US497935A US2001483A US 2001483 A US2001483 A US 2001483A US 4979 A US4979 A US 4979A US 497935 A US497935 A US 497935A US 2001483 A US2001483 A US 2001483A
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United States
Prior art keywords
tube
chain
spinning
jewelry chains
making jewelry
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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
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US4979A
Inventor
Frederick W Bopp
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Individual
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Individual
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Publication date
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Priority to US4979A priority Critical patent/US2001483A/en
Application granted granted Critical
Publication of US2001483A publication Critical patent/US2001483A/en
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21L—MAKING METAL CHAINS
    • B21L11/00—Making chains or chain links of special shape
    • B21L11/005—Making ornamental chains

Definitions

  • Patented May 14, 1935 UNITED STATES PATENT OFFICE 1 Claim.
  • This invention relates to a chain mainly designed for jewelry purposes, the general object of the invention being to provide a flexible core and a plurality of tubular members placed on the core to provide a tube chain.
  • Fig. 1 is an elevation of a length of chain constructed in accordance with this invention.
  • Fig. 2 is a fragmentary view, with parts in section.
  • Fig. 3 is a view, with the tube in section, showing how the tube is cut into short lengths by a spinning operation.
  • Fig. 4 is a fragmentary longitudinal sectional view, the section being taken at right angles to that of Fi 2.
  • the numeral I indicates a chain which is composed of the links 2 having rounded ends, and in carrying out the invention, a plurality of short tubes 3 is placed on the chainso that the chain forms a core or filler and each end of each tube has an inwardly extending part 4 ment on thechain.
  • each tube has but limited sliding move- I
  • the invention is carried out by placing an elongated tube over the chain and then cutting the tube into short lengths and deforming the ends to provide the inwardly extending parts 4 which limit sliding movement of the tubes on the chain.
  • This operation is performed by a spinning process as shown in Fig. 3, which shows one part of a tube being separated from another part by the spinning action of a rotating member 5 carried by a shaft 6.
  • This spinning process displaces the middle of the tube inwardly until a point is reached where the metal parts; so that one part of the tube is separated from another part, the displaced metal extending inwardly to form the inwardly extending portions 4.
  • Fig. 3 shows one part of a tube being separated from another part by the spinning action of a rotating member 5 carried by a shaft 6.
  • This spinning process displaces the middle of the tube inwardly until a point is reached where the metal parts; so that one part of the tube is separated from another part, the displaced metal extending inwardly to form the inwardly extending portions 4.
  • the members 5 are used as are necessary to divide the tube into the desired number of parts.
  • the tube is severed at points which intersect certain of the links midway between the ends of said links as shown in Figs. 2 and 4 and during the spinning operation, the side members of said links are indented as shown at I by the spinning actions.
  • the beveled spinning wheel leaves the ends of the tube sections slightly beveled as shown.
  • the herein described method of forming a tube chain consisting in placing a long tube over a chain, then cutting the tube into short lengths by spinning operations which press the metal at the ends of the short lengths inwardly to form interior projections at the ends of the short lengths, said projections engaging portions of the chain.

Description

Patented May 14, 1935 UNITED STATES PATENT OFFICE 1 Claim.
This invention relates to a chain mainly designed for jewelry purposes, the general object of the invention being to provide a flexible core and a plurality of tubular members placed on the core to provide a tube chain.
This invention is a continuation in part of an application filed by me on May 1'7, 1934, Serial No. 726,151.
This invention also consists in'certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawing and specifically pointed out in the appended claim.
In'describing the invention in detail, reference will be had to the accompanying drawing wherein like characters denote like or corresponding parts throughout the several views, and in which:
Fig. 1 is an elevation of a length of chain constructed in accordance with this invention.
Fig. 2 is a fragmentary view, with parts in section.
Fig. 3 is a view, with the tube in section, showing how the tube is cut into short lengths by a spinning operation.
Fig. 4 is a fragmentary longitudinal sectional view, the section being taken at right angles to that of Fi 2.
In this drawing, the numeral I indicates a chain which is composed of the links 2 having rounded ends, and in carrying out the invention, a plurality of short tubes 3 is placed on the chainso that the chain forms a core or filler and each end of each tube has an inwardly extending part 4 ment on thechain.
which is engaged by a rounded link of the chain. so that each tube has but limited sliding move- I The invention is carried out by placing an elongated tube over the chain and then cutting the tube into short lengths and deforming the ends to provide the inwardly extending parts 4 which limit sliding movement of the tubes on the chain.
This operation is performed by a spinning process as shown in Fig. 3, which shows one part of a tube being separated from another part by the spinning action of a rotating member 5 carried by a shaft 6. This spinning process displaces the middle of the tube inwardly until a point is reached where the metal parts; so that one part of the tube is separated from another part, the displaced metal extending inwardly to form the inwardly extending portions 4. Of course, as many of the members 5 are used as are necessary to divide the tube into the desired number of parts.
The tube is severed at points which intersect certain of the links midway between the ends of said links as shown in Figs. 2 and 4 and during the spinning operation, the side members of said links are indented as shown at I by the spinning actions. The beveled spinning wheel leaves the ends of the tube sections slightly beveled as shown.
I claim:
The herein described method of forming a tube chain consisting in placing a long tube over a chain, then cutting the tube into short lengths by spinning operations which press the metal at the ends of the short lengths inwardly to form interior projections at the ends of the short lengths, said projections engaging portions of the chain.
FREDERICK W. BOPP.
US4979A 1935-02-04 1935-02-04 Method of making jewelry chains Expired - Lifetime US2001483A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US4979A US2001483A (en) 1935-02-04 1935-02-04 Method of making jewelry chains

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US4979A US2001483A (en) 1935-02-04 1935-02-04 Method of making jewelry chains

Publications (1)

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US2001483A true US2001483A (en) 1935-05-14

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US4979A Expired - Lifetime US2001483A (en) 1935-02-04 1935-02-04 Method of making jewelry chains

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2931195A (en) * 1957-05-17 1960-04-05 Achille A Laflamme Earring

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2931195A (en) * 1957-05-17 1960-04-05 Achille A Laflamme Earring

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