US2758472A - Web tensiometer - Google Patents
Web tensiometer Download PDFInfo
- Publication number
- US2758472A US2758472A US313889A US31388952A US2758472A US 2758472 A US2758472 A US 2758472A US 313889 A US313889 A US 313889A US 31388952 A US31388952 A US 31388952A US 2758472 A US2758472 A US 2758472A
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- United States
- Prior art keywords
- frame
- tension
- web
- roller
- nerve
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
- G01L5/08—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using fluid means
Definitions
- This invention relates to tensiometers an'd 'more particularly to a device'for determining the tension ona web of material.
- One of the objects of the present -inve'ntion is to provide a tensiometer reading of 'the tension on Vthe web of cloth used in a coating machine.
- Another object of the present invention is to provide a tensiometer reading of the tension onV the w'eb of cloth used in a coating machine and'thereby'permit the operator to manually adjust the controls of the'machine to maintain a web tension in accordance with the tensiometer readings.
- Uniform tension is aprerequisiteto uniformit of product in many web processing machines such as textiles, paper, imitation leather, printing and .the like. Especially is this true in coatingsmachinery'where ,the tension on the web effects the nature of the application of the coating being applied to the'cloth.
- a supply roll of cloth ' is placed in the machine 4'the cloth is drawn off at a constant speed and at a given tension. As the diameter of the supply roll decreases, the speed or linear travel of the cloth is mantained Constant. However, the tension on the cloth increases as the drag on the ⁇ supply roll increases because the decreasing diameter produces more revolutions per minute. It is necessary to decrease the drag or friction on the supply roll shaft if the tension on the cloth is to be mantained constant.
- Figure l is a schematic view of the essential elements of the new tensiometer.
- Figure 2 is a perspective view of the nerve roller and the actuating mechanism.
- Figure 3 is a detail view of the bellows in Vertical cross section.
- Figure 4 is a Vertical sectional view of a diaphragm which is a substitute for the bollows.
- Figure 5 is a schematic view of a recording pressure gage.
- a supply beam of web material 11 which is supported in the frame 12 of a plastic coating machine (illustrated by way of example).
- the web 13 passes over an idle roller 14 supported in frame 12. It then passes around a nerve roller 15 to a second idle roller 16 and on past a knife coating head to drying ovens and a windup roll.
- the last three devices are not shown because they are well known in the art.
- the nerve roller 15 mounted upon a shaft 20 suitably i number of feet per minute.
- a U-shaped arm 27 secured to the frame 12 has secured thereto a bellows 28 of the type commercially known as a Sylphon bellows.
- the bellows 28 responds to the position of frame 23 at 30.
- a pressure gage 31 lof any conventional commercial manufacture is ⁇ mounted in any convenient position on or oif the frame 12.
- a tube 32 connects bellows 28 with pressure gage 31.
- a fluid contained in bellows 28, tube 32 and pressure gage 31 causes the latter to respond to the reaction of the former thereby indicating the position of frame 23 as it pivots on shafts 26 and 26A to indicate the position of nerve roll 15 in response to the tautness of web 13.
- tension control is so vitally important to first grade workmanship and ⁇ hence quality product, it may ⁇ be vfound expedient to substitute a recording pressure gage 39 in place of pressure gage 31. This would pro- Vduce a permanent record of the tension applied to the individual supply beam of 'web material, thereby exercising production control.
- the recording pressure gage ⁇ 39 is a commercially manufactured product.
- Figura 4 depicts a diaphragm generally indicated by 'reference character 40 and comprises a two part housing '41, 42 fastened together by means of screws v43.
- Housing 41 is provided with a threaded shank 44 which may be secured to arm 27.
- a membrane 45 is positioned between the two parts of housing 41, 42 and is held in position by screws 43 intermediate chambers 46, 47 formed between the housings 41, 42.
- Tube 32 is secured in housing 41 and communicates with chamber 46.
- a plunger 48 slidably mounted in housing 42 and acting in chamber 47 uponmembrane 45 is operatively connected at 30 to frame 23. As plunger 48 responds to the position of Vpressure gager31 or recording pressure gage 39, as the case may be.
- a frame In a machine for maintaining uniform tension on a traveling web, a frame, a shaft provided with a brake drum rotatably mounted in said frame, a supply beam of Web material fixed to said shaft, brake hands pivotally mounted in said frame engaging said brake drum, oppositely disposed idler rollers in spaced Vertical alignment supported in said frame, a force responsive fluid pressure element supported in said frame, a pressure indicator fixed in said frame operatively connected to said force responsive fluid pressure element, oppositely disposed brackets in horizontal alignment secured to said frame, a second frame pivotally mounted intermediate said brackets, said second frame engageable and disengageable With said force responsive fluid pressure element, a nerve roller rotatably mounted in said second frame intermediate said idler rollers, said traveling web having a takeoff from said supply beam of Web material to one of said idler rollers, thence to said nerve roller and to the other idler roller and beyond, said brake bands being manually operated in accordance With the reading on said indicator, said nerve roller reacting to the tension on said traveling Web.
- a frame a shaft provided With a brake drum rotatably mounted in said frame, a supply beam of web material fixed to said shaft, brakev bands pivotally mounted in said frame engaging said brake drum, oppositely disposed idler rollers in spaced Vertical alignment supported in said frame, a bellows fixed on one end to said frame, a pressure indicator'fixed in said frame operatively connected to said bellows, oppositely disposed brackets in horizontal alignment secured to said frame,
- a nerve roller rotatably mounted in said second frame intermediate said idler roller, said second frame engaging and disengaging said bellows in response to the action of said nerve roller, said traveling Web having a takeoff from said supply beam ofweb material to one of said idler rollers, thence to said nerve roller and to the other idler roller and beyond, said brake bands being manually operated in accordance With the reading on said indicator, said nerve roller reacting to the tension on said traveling Web, said tension passing from said nerve roller to said second frame and thence to said bellows and said indicator.
- a frame a shaft provided With a brake drum rotatably mounted in said frame, a supply beam of Web material fixed to said shaft, brake bands pivotally mounted in said frame engaging said brake drum, oppositely disposed idler rollers in spaced Vertical alignment supported in said frame, a diaphragm having a plunger, said diaphragm being fixed to said frame, a pressure recorder fixed in said frame operatively connected to said diaphragm, oppositely disposed brackets in horizontal alignment secured to said frame, a second frame pivotally mounted intermediate said brackets, a nerve roller rotatably mounted in said second frame intermediate said idler rollers, said second frame engaging and disengaging said plunger in response to the action of said nerve roller, said traveling web having a takeoff from said supply beam of web material to one of said idler rollers, thence to said nerve roller and to the other idler roller and beyond, said brake bands being manually operated in accordance with the reading on said recording on said pressure recorder, said brake bands being manually operated in accordance with the reading on said recording on
- a frame a supply beam of web material supported in said frame, oppositely disposed idler rollers in spaced Vertical alignment supported in said frame, a force responsive fluid pressure element supported in said frame, a pressure indicator fixed in said frame operatively connected to said force responsive fluid pressure element, oppositely disposed brackets in horizontal alignment secured to each side of said frame, a second frame pivotally mounted intermediate said brackets, said second frame being engageable and disengageable With said force responsive fiuid pressure element, a nerve roller rotatably mounted in said second frame intermediate said idler rollers, said traveling web having a takeoff from said supply beam of web material to one of said idler rollers, thence to said nerve roller to the other idler roller and beyond, said nerve roller reacting to the tension on the web and indicating said tension on the pressure indicator.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
Description
Aug. 14, 1956 R. L.. BowEN, JR
WEB TENsIoMETER Filed Oct. 9, 1952 RichargyLeBoron Bowen,dr. MJ/M AmRNEY United States Patent 2,758,'472 WEB TENsIoMEmR Richard L. Bowen, Jr., Pawtucket, R. I.
Application October 9, 1952, SerialNo. 313,889 4 iClaims. (C1. 73-144) This invention relates to tensiometers an'd 'more particularly to a device'for determining the tension ona web of material.
One of the objects of the present -inve'ntion is to provide a tensiometer reading of 'the tension on Vthe web of cloth used in a coating machine.
Another object of the present invention is to provide a tensiometer reading of the tension onV the w'eb of cloth used in a coating machine and'thereby'permit the operator to manually adjust the controls of the'machine to maintain a web tension in accordance with the tensiometer readings.
Other objects of the present invention will be pointed out in part and become apparent in part in 'the following specification and claims.
Uniform tension is aprerequisiteto uniformit of product in many web processing machines such as textiles, paper, imitation leather, printing and .the like. Especially is this true in coatingsmachinery'where ,the tension on the web effects the nature of the application of the coating being applied to the'cloth. *When a supply roll of cloth 'is placed in the machine 4'the cloth is drawn off at a constant speed and at a given tension. As the diameter of the supply roll decreases, the speed or linear travel of the cloth is mantained Constant. However, the tension on the cloth increases as the drag on the `supply roll increases because the decreasing diameter produces more revolutions per minute. It is necessary to decrease the drag or friction on the supply roll shaft if the tension on the cloth is to be mantained constant. In the past constant tension devices have failed to give an instrument reading of the tension on the web. Past devices have also failed to automatically control the drag and regulate the tension accurately in accordance with a scientific indication of the tension. A tension curve of the present controls would be a straight line. The tension curves of present commercial controls would not be.
Referring to the drawings in which similar characters of reference indicate corresponding parts in all the figures:
Figure l is a schematic view of the essential elements of the new tensiometer.
Figure 2 is a perspective view of the nerve roller and the actuating mechanism.
Figure 3 is a detail view of the bellows in Vertical cross section.
Figure 4 is a Vertical sectional view of a diaphragm which is a substitute for the bollows.
Figure 5 is a schematic view of a recording pressure gage.
In proceeding with this invention there is provided a supply beam of web material 11 which is supported in the frame 12 of a plastic coating machine (illustrated by way of example). The web 13 passes over an idle roller 14 supported in frame 12. It then passes around a nerve roller 15 to a second idle roller 16 and on past a knife coating head to drying ovens and a windup roll. The last three devices are not shown because they are well known in the art.
The nerve roller 15 mounted upon a shaft 20 suitably i number of feet per minute.
2,758,472 g Patented Aug. 14, 1955 ice supported in the ears 21, 22 of a frame 23 which is pivotally mounted by means of shafts 26 and 26A in brackets 24, 25 secured to frameslZ and 12A.
- A U-shaped arm 27 secured to the frame 12 has secured thereto a bellows 28 of the type commercially known as a Sylphon bellows. The bellows 28 responds to the position of frame 23 at 30. A pressure gage 31 lof any conventional commercial manufacture is `mounted in any convenient position on or oif the frame 12. A tube 32 connects bellows 28 with pressure gage 31. A fluid contained in bellows 28, tube 32 and pressure gage 31 causes the latter to respond to the reaction of the former thereby indicating the position of frame 23 as it pivots on shafts 26 and 26A to indicate the position of nerve roll 15 in response to the tautness of web 13.
When a supply beam 11 is placed on frame 12 the web I material 13 rolls off ata maximum diameter at a given As the beam diameter becomes smaller, the speed of supply beam 11 in R. P. Mfs increases thereby increasing the tension on the web. This increased tension aifects the application of the coating material,`producing a non-uniformcoating and resulting vin secondary product. By maintaining the tension constant or uniform, the coating application is more readily uniformly applied resulting in a high grade uniform product. To achieve this end a brake 35 mounted on frame 12 and acting on supply .beam shaft 36 is manually controlled in accordance with the tension indicated on pressure gage 31. a
Because tension control is so vitally important to first grade workmanship and `hence quality product, it may `be vfound expedient to substitute a recording pressure gage 39 in place of pressure gage 31. This would pro- Vduce a permanent record of the tension applied to the individual supply beam of 'web material, thereby exercising production control. The recording pressure gage` 39 is a commercially manufactured product.
Figura 4 depicts a diaphragm generally indicated by 'reference character 40 and comprises a two part housing '41, 42 fastened together by means of screws v43. Housing 41 is provided with a threaded shank 44 which may be secured to arm 27. A membrane 45 is positioned between the two parts of housing 41, 42 and is held in position by screws 43 intermediate chambers 46, 47 formed between the housings 41, 42. Tube 32 is secured in housing 41 and communicates with chamber 46. A plunger 48 slidably mounted in housing 42 and acting in chamber 47 uponmembrane 45 is operatively connected at 30 to frame 23. As plunger 48 responds to the position of Vpressure gager31 or recording pressure gage 39, as the case may be.
It becomes evident that a piston or other mechanical equivalent of a diaphragm 40 or a bellows 28 may be substituted for the diaphragm 40 and bellows 28 shown and described without departing from the spirit or scope of this invention.
What I claim is:
l. In a machine for maintaining uniform tension on a traveling web, a frame, a shaft provided with a brake drum rotatably mounted in said frame, a supply beam of Web material fixed to said shaft, brake hands pivotally mounted in said frame engaging said brake drum, oppositely disposed idler rollers in spaced Vertical alignment supported in said frame, a force responsive fluid pressure element supported in said frame, a pressure indicator fixed in said frame operatively connected to said force responsive fluid pressure element, oppositely disposed brackets in horizontal alignment secured to said frame, a second frame pivotally mounted intermediate said brackets, said second frame engageable and disengageable With said force responsive fluid pressure element, a nerve roller rotatably mounted in said second frame intermediate said idler rollers, said traveling web having a takeoff from said supply beam of Web material to one of said idler rollers, thence to said nerve roller and to the other idler roller and beyond, said brake bands being manually operated in accordance With the reading on said indicator, said nerve roller reacting to the tension on said traveling Web. i
2. In a machine for maintaining uniform tension on a traveling web, a frame, a shaft provided With a brake drum rotatably mounted in said frame, a supply beam of web material fixed to said shaft, brakev bands pivotally mounted in said frame engaging said brake drum, oppositely disposed idler rollers in spaced Vertical alignment supported in said frame, a bellows fixed on one end to said frame, a pressure indicator'fixed in said frame operatively connected to said bellows, oppositely disposed brackets in horizontal alignment secured to said frame,
a second frame pivotally mounted intermediate said brackets, a nerve roller rotatably mounted in said second frame intermediate said idler roller, said second frame engaging and disengaging said bellows in response to the action of said nerve roller, said traveling Web having a takeoff from said supply beam ofweb material to one of said idler rollers, thence to said nerve roller and to the other idler roller and beyond, said brake bands being manually operated in accordance With the reading on said indicator, said nerve roller reacting to the tension on said traveling Web, said tension passing from said nerve roller to said second frame and thence to said bellows and said indicator. i i
3. In a machine for maintaining uniform tension on a traveling Web, a frame, a shaft provided With a brake drum rotatably mounted in said frame, a supply beam of Web material fixed to said shaft, brake bands pivotally mounted in said frame engaging said brake drum, oppositely disposed idler rollers in spaced Vertical alignment supported in said frame, a diaphragm having a plunger, said diaphragm being fixed to said frame, a pressure recorder fixed in said frame operatively connected to said diaphragm, oppositely disposed brackets in horizontal alignment secured to said frame, a second frame pivotally mounted intermediate said brackets, a nerve roller rotatably mounted in said second frame intermediate said idler rollers, said second frame engaging and disengaging said plunger in response to the action of said nerve roller, said traveling web having a takeoff from said supply beam of web material to one of said idler rollers, thence to said nerve roller and to the other idler roller and beyond, said brake bands being manually operated in accordance with the reading on said recording on said pressure recorder, said nerve roller reacting to the tension on said traveling web, said tension passing from said nerve roller to said second frame and thence to said plunger and through said diaphragm to said pressure recorder.
4. In a machine for indicating tension on a traveling web, a frame, a supply beam of web material supported in said frame, oppositely disposed idler rollers in spaced Vertical alignment supported in said frame, a force responsive fluid pressure element supported in said frame, a pressure indicator fixed in said frame operatively connected to said force responsive fluid pressure element, oppositely disposed brackets in horizontal alignment secured to each side of said frame, a second frame pivotally mounted intermediate said brackets, said second frame being engageable and disengageable With said force responsive fiuid pressure element, a nerve roller rotatably mounted in said second frame intermediate said idler rollers, said traveling web having a takeoff from said supply beam of web material to one of said idler rollers, thence to said nerve roller to the other idler roller and beyond, said nerve roller reacting to the tension on the web and indicating said tension on the pressure indicator.
References Cited in the file of this patent UNITED STATES PATENTS 558,426 Scott Apr. 14, 1896 1,650,603 Burton Nov. 29, 1927 1,882,932 Rosen Oct. 18, 1932 2,131,868 Bolton et al Oct. 4, 1938 2,462,558 Scheuermann et al Feb. 22, 1949 FOREIGN PATENTS 138,761 Great Britain Feb. 19, 1920 173,851 Great Britain Ian. 5. 1922
Claims (1)
1. IN A MACHINE FOR MAINTAINING UNIFORM TENSION ON A TRAVELING WEB, A FRAME, A SHAFT PROVIDED WITH A BRAKE DRUM ROTATABLY MOUNTED IN SAID FRAME, A SUPPLY BEAM OF WEB MATERIAL FIXED TO SAID SHAFT, BRAKE BANDS PIVOTALLY MOUNTED IN SAID FRAME ENGAGING SAID BRAKE DRUMS, OPPOSITELY DISPOSED IDLER ROLLERS IN SPACED VERTICAL ALIGNMENT SUPPORTED IN SAID FRAME, A FORCE RESPONSIVE FLUID PRESSURE ELEMENT SUPPORTED IN SAID FRAME, A PRESSURE INDICATOR FIXED IN SAID FRAME OPERATIVELY CONNECTED TO SAID FORCE RESPONSIVE FLUID PRESSURE ELEMENT, OPPOSITELY DISPOSED BRACKETS IN HORIZONTAL ALIGNMENT SECURED TO SAID FRAME, A SECOND FRAME PIVOTALLY MOUNTED INTERMEDIATE SAID BRACKETS, SAID SECOND FRAME ENGAGEABLE AND DISENGAGEABLE WITH SAID FORCE RESPONSIVE FLUID PRESSURE ELEMENT,
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US313889A US2758472A (en) | 1952-10-09 | 1952-10-09 | Web tensiometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US313889A US2758472A (en) | 1952-10-09 | 1952-10-09 | Web tensiometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2758472A true US2758472A (en) | 1956-08-14 |
Family
ID=23217600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US313889A Expired - Lifetime US2758472A (en) | 1952-10-09 | 1952-10-09 | Web tensiometer |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2758472A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3675482A (en) * | 1970-10-14 | 1972-07-11 | Goodyear Tire & Rubber | Automatic tension sensing apparatus for belt conveyor |
| US3747402A (en) * | 1972-05-12 | 1973-07-24 | Pyramid Derrick & Equipment Co | Arrangement for measuring the load on a hook carried by a traveling block which is supported from the crown block of a drilling mast |
| US3811316A (en) * | 1972-10-20 | 1974-05-21 | Motor Devices Corp | Testing device for shock absorbers and the like |
| USRE31312E (en) * | 1977-10-11 | 1983-07-19 | W. J. Industries, Inc. | Tension monitor means |
| US4823619A (en) * | 1986-02-28 | 1989-04-25 | Antonio Nicholas F D | Sensor and transducer apparatus |
| US5033316A (en) * | 1988-11-14 | 1991-07-23 | Ende Andre M V D | Device for measuring at least the tensile force in a winch wire |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US558426A (en) * | 1896-04-14 | Web-tension device for printing-presses | ||
| GB138761A (en) * | 1919-04-08 | 1920-02-19 | Edgar Wilton Smith | Means for hydraulically controlling the reel tension in rotary printing and other machines |
| GB173851A (en) * | 1920-10-05 | 1922-01-05 | Crabtree & Sons Ltd R | Improvements relating to web printing machines |
| US1650603A (en) * | 1923-06-09 | 1927-11-29 | Burton Warren Dean | Tension meter |
| US1882932A (en) * | 1929-05-25 | 1932-10-18 | Wood Newspaper Mach Corp | Tension meter |
| US2131868A (en) * | 1938-01-07 | 1938-10-04 | Halliburton Oil Well Cementing | Well measuring |
| US2462558A (en) * | 1944-06-15 | 1949-02-22 | Cameron Machine Co | Tension control means for running webs |
-
1952
- 1952-10-09 US US313889A patent/US2758472A/en not_active Expired - Lifetime
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US558426A (en) * | 1896-04-14 | Web-tension device for printing-presses | ||
| GB138761A (en) * | 1919-04-08 | 1920-02-19 | Edgar Wilton Smith | Means for hydraulically controlling the reel tension in rotary printing and other machines |
| GB173851A (en) * | 1920-10-05 | 1922-01-05 | Crabtree & Sons Ltd R | Improvements relating to web printing machines |
| US1650603A (en) * | 1923-06-09 | 1927-11-29 | Burton Warren Dean | Tension meter |
| US1882932A (en) * | 1929-05-25 | 1932-10-18 | Wood Newspaper Mach Corp | Tension meter |
| US2131868A (en) * | 1938-01-07 | 1938-10-04 | Halliburton Oil Well Cementing | Well measuring |
| US2462558A (en) * | 1944-06-15 | 1949-02-22 | Cameron Machine Co | Tension control means for running webs |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3675482A (en) * | 1970-10-14 | 1972-07-11 | Goodyear Tire & Rubber | Automatic tension sensing apparatus for belt conveyor |
| US3747402A (en) * | 1972-05-12 | 1973-07-24 | Pyramid Derrick & Equipment Co | Arrangement for measuring the load on a hook carried by a traveling block which is supported from the crown block of a drilling mast |
| US3811316A (en) * | 1972-10-20 | 1974-05-21 | Motor Devices Corp | Testing device for shock absorbers and the like |
| USRE31312E (en) * | 1977-10-11 | 1983-07-19 | W. J. Industries, Inc. | Tension monitor means |
| US4823619A (en) * | 1986-02-28 | 1989-04-25 | Antonio Nicholas F D | Sensor and transducer apparatus |
| US5033316A (en) * | 1988-11-14 | 1991-07-23 | Ende Andre M V D | Device for measuring at least the tensile force in a winch wire |
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