US3744288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tensiometer
Assignee: Siemens Industry Inc
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Filing: 1971-12-22
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Granted: 1973-07-10
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Expires: 1991-12-22
Abstract
Abstract Mechanism for determining and varying the tension present in a rod being rolled as it passes between adjacent stands in a rod mill. The read-out gives an indication enabling the operator to make manual speed adjustment of the rolls to change the rod tension to the desired norm, or through a feed-back device the roll speeds may be changed automatically to achieve the same result. The mechanism operates on the principle of temporarily applying a transverse force moved through a fixed distance against the moving rod. The resistance to this force measured by a load cell and associated meters will give an indication of the then existing rod tension as it moves between adjacent roll stands and an indication of the adjustment to be made in roll speeds to change the rod tension to the desired norm.
Inventors
- 👤 R Wykes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:05
CPC Classifications
B; B21; B21C; B21C51/00; B21B; B21B37/00; B21B37/48; B21B37/52
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
209 words
The method of adjusting the tension of moving stock being rolled in a rolling mill to a predetermined normal tension between each pair of adjacent stands comprising the steps of: transversely moving the stock at a position intermediate the said adjacent roll stands a standard fixed distance by the application of a transverse force thereby to deflect the stock and to increase the tension therein; measuring the transverse force required to deflect said stock through the use of a tensiometer which measured force is predictably related to the said normal tension when said stock is undeflected; adjusting the speeds of the rolls in adjacent stands while said stock is deflected to produce the desired normal tension in this section of the moving stock; then removing said transverse deflecting force and allowing the stock to resume its normal undeflected condition; thereafter periodically deflecting said moving stock section transversely through said standard fixed distance and noting the force required to cause said deflection; adjusting the speeds of the rolls of said adjacent stands to change the said stock deflecting force to that which is predictably related to the said normal tension in the undeflected stock; and then removing said deflecting force and allowing said stock to resume its normal undeflected condition.
Claim 2
Independent Claim
209 words
The method of adjusting the tension of moving stock being rolled in a rolling mill to a predetermined normal tension between each pair of adjacent stands comprising the steps of: transversely moving the stock at a position intermediate the said adjacent roll stands a standard fixed distance by the application of a transverse force thereby to deflect the stock and to increase the tension therein; measuring the transverse force required to deflect said stock through the use of a tensiometer which measured force is predictably related to the said normal tension when said stock is undeflected; adjusting the speeds of the rolls in adjacent stands while said stock is deflected to produce the desired normal tension in this section of the moving stock; then removing said transverse deflecting force and allowing the stock to resume its normal undeflected condition; thereafter periodically deflecting said moving stock section transversely through said standard fixed distance and noting the force required to cause said deflection; adjusting the speeds of the rolls of said adjacent stands to change the said stock deflecting force to that which is predictably related to the said normal tension in the undeflected stock; and then removing said deflecting force and allowing said stock to resume its normal undeflected condition.
Claim 3
Dependent Claim
20 words
The method set forth in claim 1, said adjusting of the speeds of said rolls being controlled by manual operation.
Claim 4
Dependent Claim
34 words
The method set forth in claim 1, said adjusting of the speeds of said rolls being controlled by automated devices the extent of whose movement is related to the said then existing transverse force.
Claim 5
Dependent Claim
180 words
In a rolling mill having a plurality of roll stands and means for varying the speed of the work rolls in said roll stands, apparatuS for determining the tension present in the product being rolled as it is passing from one stand to the next, comprising: a product engaging element located between said stands; support means for carrying said product engaging element for movement in a direction transverse to the path traveled by the product passing between said stand; operating means associated with said support means for moving the product engaging element a predetermined constant distance whereby said element will engage the product and move the engaged part of the product a uniform transverse distance in relation to its normal path of travel between said roll stands and whereby the product will press against said element with a force which is predictably related to the undeflected product tension; a load cell included as part of said support means and located between said product engaging element and said operating means; and, means actuated by said load cell for indicating said force.
Claim 6
Dependent Claim
180 words
In a rolling mill having a plurality of roll stands and means for varying the speed of the work rolls in said roll stands, apparatuS for determining the tension present in the product being rolled as it is passing from one stand to the next, comprising: a product engaging element located between said stands; support means for carrying said product engaging element for movement in a direction transverse to the path traveled by the product passing between said stand; operating means associated with said support means for moving the product engaging element a predetermined constant distance whereby said element will engage the product and move the engaged part of the product a uniform transverse distance in relation to its normal path of travel between said roll stands and whereby the product will press against said element with a force which is predictably related to the undeflected product tension; a load cell included as part of said support means and located between said product engaging element and said operating means; and, means actuated by said load cell for indicating said force.
Claim 7
Dependent Claim
78 words
The apparatus as claimed in claim 4 wherein said support means is comprised of a bell crank pivotally mounted for movement about an axis spaced laterally from and extending in a direction transverse to the path traveled by the product passing between the roll stands, said product engaging element being mounted on one arm of the crank, and said load cell being pivotally attached at opposite ends respectively to the other of said crank and said operating means.
Claim 8
Dependent Claim
26 words
The apparatus as claimed in claim 5 wherein said product engaging element comprises a roller, and wherein said operating means comprises a fluid operated piston-cylinder assembly.
Claim 9
Independent Claim
143 words
The method of adjusting the tension of moving stock being rolled in a rolling mill to a predetermined normal tension between each pair of adjacent roll stands comprising the steps of: transversely moving the stock at a position intermediate the said adjacent roll stands a standard fixed distance by the application of a transverse force to thereby deflect the stock and to increase the tension therein; measuring the transverse force required to deflect said stock through the use of a tensiometer which measured force is predictably related to the stock tension when the stock is undeflected; adjusting the speeds of the rolls in the adjacent roll stands while said stock is deflected to achieve a measured force which is predictably related to the desired predetermined normal tension; then removing said transverse deflecting force and allowing the stock to resume its normal undeflected condition.
Claim 10
Independent Claim
143 words
The method of adjusting the tension of moving stock being rolled in a rolling mill to a predetermined normal tension between each pair of adjacent roll stands comprising the steps of: transversely moving the stock at a position intermediate the said adjacent roll stands a standard fixed distance by the application of a transverse force to thereby deflect the stock and to increase the tension therein; measuring the transverse force required to deflect said stock through the use of a tensiometer which measured force is predictably related to the stock tension when the stock is undeflected; adjusting the speeds of the rolls in the adjacent roll stands while said stock is deflected to achieve a measured force which is predictably related to the desired predetermined normal tension; then removing said transverse deflecting force and allowing the stock to resume its normal undeflected condition.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |