US116266A - Improvement in modes of tempering springs - Google Patents
Improvement in modes of tempering springs Download PDFInfo
- Publication number
- US116266A US116266A US116266DA US116266A US 116266 A US116266 A US 116266A US 116266D A US116266D A US 116266DA US 116266 A US116266 A US 116266A
- Authority
- US
- United States
- Prior art keywords
- springs
- improvement
- modes
- spring
- wire
- 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
Links
- 238000005496 tempering Methods 0.000 title description 10
- 238000000034 method Methods 0.000 description 8
- 239000002184 metal Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000001771 impaired Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/02—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for springs
-
- 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
- Y10T29/49609—Spring making
Definitions
- This invention relates to spiral springs, usually made in a conical form, of steel wire, and extensively used in upholstering sofas and chairs, and for bed-bottoms, 850.; and consists in subjecting the spring to a tempering process after it has been completed in the usual manner, whereby its strength, elasticity, and durability are greatly increased.
- the ordinary furniture-sprin g is made 0t hard drawn wire, coiled and forced to the proper shape, and when this is done the spring is considered finished, without having been subjected to any tempering process other than what is incidental to the drawing of the wire.
- copper or other material is frequently applied by suitable means.
- the metal being greatly condensed and hardened in the process of drawing the wire, a good degree of elasticity is given the wire thereby; but inbending or coiling the wire into the proper shape the metal is unavoidably weakened-the outer portion of the wire coil is drawn or stretched, while the inner portion is crushed or shortened.
- straight bars or wire is subjected to the bending process the stretching or drawingof the outer and crushing of the inner portions are inevitable results.
- the spring consequent on its increased powers of resistance.
- the spring will bear much heavier pressure, and its strength and elasticity are much less impaired than the ordinary spring after long-continued use.
Description
UNITED. STATES PATENT QFFIGE.
ALANSON CARY, OF NEW YORK, N. Y.
IMPROVEMENT IN MODES OF TEMPERING SPRINGS.
Specification forming part of Letters Patent No. 116,266, dated June 27, 1871.
To all whom it may concern:
Be it known that I, ALANSON GARY, of city, county, and State of New York, have invented a new and useful Improvement in Furniture- Springs; and I do hereby declare that the following is a full, clear, and exact description thereof, whichwill enable others skilled in the art to make and use the same.
This invention relates to spiral springs, usually made in a conical form, of steel wire, and extensively used in upholstering sofas and chairs, and for bed-bottoms, 850.; and consists in subjecting the spring to a tempering process after it has been completed in the usual manner, whereby its strength, elasticity, and durability are greatly increased.
The ordinary furniture-sprin g is made 0t hard drawn wire, coiled and forced to the proper shape, and when this is done the spring is considered finished, without having been subjected to any tempering process other than what is incidental to the drawing of the wire. To give them a fin ished appearance, however, copper or other material is frequently applied by suitable means. The metal being greatly condensed and hardened in the process of drawing the wire, a good degree of elasticity is given the wire thereby; but inbending or coiling the wire into the proper shape the metal is unavoidably weakened-the outer portion of the wire coil is drawn or stretched, while the inner portion is crushed or shortened. When straight bars or wire is subjected to the bending process the stretching or drawingof the outer and crushing of the inner portions are inevitable results. This greatly reduces the elasticity, strength and durability of the spring. Being a manufacturer of furniture-springs, and aware of this difl ficulty, I have tried many experiments with a view of restoring the wire, after being bent or formed into springs, to its normal condition. This I have discovered can be done by subjecting the spring to a degree of heat known as {spring-temper heat, which is about 600, more or less, and that a subjection to this temperature for about eight minutes is sufficient to produce the result desired. This temperature I have found to be sufficient to so far relax or produce a complete homogeneity of the metal of the spring as to add from twenty to thirty per cent. to the value of.
the spring, consequent on its increased powers of resistance. Thus treated the spring will bear much heavier pressure, and its strength and elasticity are much less impaired than the ordinary spring after long-continued use.
For carrying out and putting in practicemy discovery I have invented a temperingoven, for which I have an application for Letters Patent now pending.
Having thus described my invention, I claim as new and desire to secure by Letters Patent Y The method of tempering furniture or other coiled springs, substantially as hereinbefore described.
. ALANSON GARY.
Witnesses GEO. W. MABEE, ALEX. F. RoBERTs.
Publications (1)
Publication Number | Publication Date |
---|---|
US116266A true US116266A (en) | 1871-06-27 |
Family
ID=2185725
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US116266D Expired - Lifetime US116266A (en) | Improvement in modes of tempering springs |
Country Status (1)
Country | Link |
---|---|
US (1) | US116266A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2898254A (en) * | 1954-05-20 | 1959-08-04 | Gillette Co | Method of inducing permanent set in razor blade strip |
-
0
- US US116266D patent/US116266A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2898254A (en) * | 1954-05-20 | 1959-08-04 | Gillette Co | Method of inducing permanent set in razor blade strip |
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