US1342071A - Method of making installation-loops for electric fixtures - Google Patents

Method of making installation-loops for electric fixtures Download PDF

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Publication number
US1342071A
US1342071A US333974A US33397419A US1342071A US 1342071 A US1342071 A US 1342071A US 333974 A US333974 A US 333974A US 33397419 A US33397419 A US 33397419A US 1342071 A US1342071 A US 1342071A
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United States
Prior art keywords
loops
making installation
ring
electric fixtures
slug
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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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US333974A
Inventor
Shoner John
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Chase Companies Inc
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Chase Companies Inc
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Publication date
Application filed by Chase Companies Inc filed Critical Chase Companies Inc
Priority to US333974A priority Critical patent/US1342071A/en
Application granted granted Critical
Publication of US1342071A publication Critical patent/US1342071A/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
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/30—Installations of cables or lines on walls, floors or ceilings
    • H02G3/32—Installations of cables or lines on walls, floors or ceilings using mounting clamps

Definitions

  • Figure 1 a view in side elevation of such a rod-slug as may be used in the production of my improved installation-loop.
  • Fig. 2. a view in side elevation showing the article after the first or heading operation.
  • Fig. 3. a corresponding view showing the article after the first stamping operation.
  • Fig. 4. an edge view thereof.
  • Fig. 5. a view of the article after the second stamping operation.
  • Fig. 6. an edge view thereof.
  • Fig. 7 a view of the article after the piercing operation.
  • Fig. 8. a corresponding View of the article after the threading operation.
  • Fig. 9. a view after the drilling operation which results in the production of the finished loop.
  • My invention relates to an improved method of making installation-loops for electric fixtures, the object being. to produce a loop of superior strength and one which may be cut and opened and closed without danger of breaking it, for the insertion into it of another loop or a link of a chain.
  • -loops of this character have been made of cast metal and have partaken of the weakness pertaining to cast metal articles, frequently breaking when opened and closed for the purpose of inserting another loop or a link of a chain.
  • my invention consists in a series of forming steps by means of which installation-loops of superior strength are produced from wroughtmetal.
  • a rod-slug 2 of suitable length and diameter In carrying out my invention, I use a rod-slug 2 of suitable length and diameter.
  • This slug is first headed in a suitable heading-machine whereby the stock is displaced to produce an annular seating-flange 3 between the stem-end 4 of the slug, which end is countersunk as at 5, and the ring-end 6 of the slug which is bulged, the slug being shortened by this heading operation.
  • the slug as thus developed is now subjected to the action of a stamping-press whereby its bulged ring-end 6 is flattened to form a diskshaped ring-blank 7, shown in Figs. 3 and 4.
  • the article is then subjected to a second stamping operation in which the ring-blank 7 is further flattened and enlarged to the desired diameter and thickness as shown at 8 in Figs. 5 and 6.
  • the article is now subjected to a piercing operation whereby the ring 9 is produced.
  • the stem-end 4 is now threaded as at 10 as shown by Fig. 8.
  • the blank is finally drilled as at 11 through the threaded stem-end 4 into the ring 8, this drilling operation being assisted by the countersink 5 in the stem-end 4C.
  • rod-slug 2 work the metal so that the finished loop is far tougher and stronger than "if made of cast metal-so tough and strong that the ring 9 may be sawed open and bent in either direction for the insertion of another loop or the link of a chain and then bent back and.
  • a rodslug to a heading operation for producing a countersunk stem-end, a bulged ring-end and an annular seating-flange between the same, then subjecting the article to one or more stamping operations for fiattening its bulged ring-end to the required thickness and diameter, then piercing. its flattened ring-end to produce the ring, and threadingand drilling its stem-end.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Adornments (AREA)

Description

J. SHONER. v
METHOD OF MAKING INSTALLATION LOOPS FORELECTRIC FIXTURES. APPLICATION FILED 0CT.28. I919.
1,342,071 Patented June 1, 1920.
UNITE JOHN SHONER, OF WATEBBURY CONNECTICUT, ASSIGNOB, TO THE CHAS-E COMPANIES, INC., OF WATERBURY, CONNECTICUT, A CORPORATION.
METHOD OF MAKING INSTALLATION-LOOPS FOR ELECTRIC FIXTURES.
Specification of Letters Patent.
Application filed October 28, 1919. Serial No. 333,974.
To all whom it may concern:
Be it known that I,-JOHN SHONER, a citizen of the United States, residing at Waterbury, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Methods of Making Installation Loops for Electric Fixtures; and I do hereby declare the following, when taken in connection with the accompanying drawings and the characters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this application, and represent, in-
Figure 1. a view in side elevation of such a rod-slug as may be used in the production of my improved installation-loop.
Fig. 2. a view in side elevation showing the article after the first or heading operation.
Fig. 3. a corresponding view showing the article after the first stamping operation.
Fig. 4. an edge view thereof.
Fig. 5. a view of the article after the second stamping operation.
Fig. 6. an edge view thereof.
Fig. 7 a view of the article after the piercing operation.
Fig. 8. a corresponding View of the article after the threading operation.
Fig. 9. a view after the drilling operation which results in the production of the finished loop.
My invention relates to an improved method of making installation-loops for electric fixtures, the object being. to produce a loop of superior strength and one which may be cut and opened and closed without danger of breaking it, for the insertion into it of another loop or a link of a chain. Heretofore,-loops of this character have been made of cast metal and have partaken of the weakness pertaining to cast metal articles, frequently breaking when opened and closed for the purpose of inserting another loop or a link of a chain.
With these ends in view, my invention consists in a series of forming steps by means of which installation-loops of superior strength are produced from wroughtmetal.
In carrying out my invention, I use a rod-slug 2 of suitable length and diameter. This slug is first headed in a suitable heading-machine whereby the stock is displaced to produce an annular seating-flange 3 between the stem-end 4 of the slug, which end is countersunk as at 5, and the ring-end 6 of the slug which is bulged, the slug being shortened by this heading operation. The slug as thus developed is now subjected to the action of a stamping-press whereby its bulged ring-end 6 is flattened to form a diskshaped ring-blank 7, shown in Figs. 3 and 4. The article is then subjected to a second stamping operation in which the ring-blank 7 is further flattened and enlarged to the desired diameter and thickness as shown at 8 in Figs. 5 and 6. The articleis now subjected to a piercing operation whereby the ring 9 is produced. The stem-end 4 is now threaded as at 10 as shown by Fig. 8. The blank is finally drilled as at 11 through the threaded stem-end 4 into the ring 8, this drilling operation being assisted by the countersink 5 in the stem-end 4C. These sev- Patented une I, 1920.
eral operations-upon the rod-slug 2 work the metal so that the finished loop is far tougher and stronger than "if made of cast metal-so tough and strong that the ring 9 may be sawed open and bent in either direction for the insertion of another loop or the link of a chain and then bent back and.
closed, without danger of breaking. The
loop, moreover, is so strong that comparatively heavy weights in the form of heavy chain fixtures suspending glass shades, may
a rodslug to a heading operation for producing a countersunk stem-end, a bulged ring-end and an annular seating-flange between the same, then subjecting the article to one or more stamping operations for fiattening its bulged ring-end to the required thickness and diameter, then piercing. its flattened ring-end to produce the ring, and threadingand drilling its stem-end.
In testimony whereof I have signed this specification in the presence of two subscribing witnesses.
JOHN SHONER.
Witnesses:
J. S. NEAGLE,
A. C. Broken.
US333974A 1919-10-28 1919-10-28 Method of making installation-loops for electric fixtures Expired - Lifetime US1342071A (en)

Priority Applications (1)

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US333974A US1342071A (en) 1919-10-28 1919-10-28 Method of making installation-loops for electric fixtures

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