US484993A - Machinery bearing - Google Patents
Machinery bearing Download PDFInfo
- Publication number
- US484993A US484993A US484993DA US484993A US 484993 A US484993 A US 484993A US 484993D A US484993D A US 484993DA US 484993 A US484993 A US 484993A
- Authority
- US
- United States
- Prior art keywords
- lac
- boxes
- lining
- ordinary
- machinery bearing
- 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
- 239000000463 material Substances 0.000 description 26
- 239000000835 fiber Substances 0.000 description 8
- 239000010439 graphite Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910002804 graphite Inorganic materials 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- RHAXKFFKGZJUOE-UHFFFAOYSA-N 7-acetyl-6-ethyl-3,5,8-trihydroxy-9,10-dioxoanthracene-1,2-dicarboxylic acid Chemical compound O=C1C2=CC(O)=C(C(O)=O)C(C(O)=O)=C2C(=O)C2=C1C(O)=C(CC)C(C(C)=O)=C2O RHAXKFFKGZJUOE-UHFFFAOYSA-N 0.000 description 4
- 229920001800 Shellac Polymers 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 4
- 229940113147 shellac Drugs 0.000 description 4
- 235000013874 shellac Nutrition 0.000 description 4
- 239000004208 shellac Substances 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 2
- 210000000088 Lip Anatomy 0.000 description 2
- 240000003936 Plumbago auriculata Species 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 235000015450 Tilia cordata Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000001143 conditioned Effects 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000010699 lard oil Substances 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000010297 mechanical methods and process Methods 0.000 description 2
- 230000001264 neutralization Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/18—Sliding surface consisting mainly of wood or fibrous material
Definitions
- the improvement lies in the materials'employed and the process of manufacture. I produce the boxes in molds of any required form and size. The entire box may be of my composition. I prefer manufacturing only the lining-pieces of my composition and fitting them in supporting-boxes of iron or other metal, and will describe the invention as thus carried out.
- the invention may apply to all sizes and characters of journal-boxes.
- bearing-boxes for two-inch shafts-sueh as are extensively used for the line-shafting of cotton and other mills-my material maybe about three-eighths of an inch thick and of a form adapted to match in corresponding recesses in the metal boxes.
- the pressure should be from one thousand to one hundred thousand pounds per square inch.
- the hydraulic or other press employed should be adapted to follow and maintain the pressure as the material yields.
- the material can be dressed by tools. I prefer for most uses to manufacture the linings a little large and reduce them subsequently.
- the surplus material may be removed by any ordinary cutting or abrading treatment.
- the supporting-boxes of metal should be cast or otherwise produced in the proper form with the recess having a depth nearly but not quite equal to the thickness of the lining.
- Scheel-lac One important quality due to the use of Scheel-lac is a higher degree of conductivity of heat in the bearings, and consequently less disposition to overbearing by friction than is obtained with the use of shellac or other ordinary material.
- Figure 1 is a cross-section of a box with my lining in position.
- Fig. 2 is a plan view, and
- Fig. 3 is alongitudinal section of the same.
- A is my lining, and B the inclosing-box, of metal.
- a lip B extends across each end; but it is of less height than the thickness of my lining A.
- sperm-oil, lard-oil, .or any of the ordinary lubricants may be applied, either sparingly or liberally, without involving difficulties; but I prefer for most purposes that no lubricant shall be used.
- My box or lining will work satisfactorily under all ordinary log pressures and at all ordinary speeds, either with or Without lubrication or alternately in the two conditions.
- the Scheel-lac described is purchasable in the market in any quantities under that name. It is low-priced, only from four to four and a half cents per pound. It is of no appreciable effect in the mixture at ordinary temperatures; but at the high temperatures at which I compress it gives a strong and uniform adhesive quality to the finely-disintegrated dry material which I use. My boxes or linings therefore possess great strength With a slight degree of elasticity. When carrying a rapidlyrevolving shaft under heavy pressure, the friction engendered raises the temperature; but the heat is communicated to the surrounding atmosphere or conducted away as rapidly as it is generated by the very slight friction experienced, so that there is no heating above 90 to 110 Fahrenheit.
- I can use the ordinary'hard gums known as stick-lac, seed-lac, 0r shellac, instead of the Scheel-lac described, but the first-mentioned materials are much more expensive and not as good.
- My material similarly made and molded in proper shape may be also used for packings, gibs for cross-heads, and for machinery bearings generally.
- a machinery bearing composed of Scheellac combined with plumbago and fiber in the manner and substantially the proportions herein specified.
- ma chinery bearings which consists in intimately mixing dry fiber, pulverized Scheel-lac, and pulverized graphite, eompressingat a temperature of from 200 to 300 Fahrenheit, holding under pressure until cool, and subsequently releasing it and raising it uncompressed to between 300 and 400 Fahrenheit, all substantially as herein specified.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
- Forging (AREA)
Description
(No Model.)
J. DE S. BROWN. MACHINERY BEARING.
No. 484,993. Patented Oct. 25, 1892.
ms MoRms vzrzns $0.. Puoro'uwo" WA$HIN5TON. D, a
5 UNITED STATES PATENT OFFICE.
JAMES DE SELDING BROWN, OF PHILADELPHIA, PENNSYLVANIA.
MACHINERY BEARING.
SPECIFICATION forming part of Letters Patent No. 484,993, dated October 25, 1892.
Application filed March 29, 1892. Serial No. 426,860. (No model.)
To all whom it may concern.-
Be it known that 1, JAMES DE SELDING BROWN, a citizen of the United States, residmg in the city and county of Philadelphia, State of Pennsylvania, have invented a certain new and useful Improvement in Machinery Bearings, of which the following is a specification.
I will describe it as applied to journalboxes.
The improvement lies in the materials'employed and the process of manufacture. I produce the boxes in molds of any required form and size. The entire box may be of my composition. I prefer manufacturing only the lining-pieces of my composition and fitting them in supporting-boxes of iron or other metal, and will describe the invention as thus carried out.
The invention may apply to all sizes and characters of journal-boxes.
I take one hundred pounds of wood pulp, made by mechanical process, in which the material preserves its original condition, except that it is divided into fine and short fibers. With this I intimately mix two hundred pounds of what is known as Scheel-lac and eight hundred pounds of finely-divided graphite, which latter has been previously separated from all foreign matter, especially gritty material, by the well-known process of floating. The mixing is made very intimate and thorough by grinding in a burr-mill or other mill, the process being conducted so slowly as to avoid materially raising the temperature. This dry material may be stored for any period. When it is to be used, it is tumbled through a revolving inclined pipe kept at a sufficient heat, or is otherwise uniformly raised in temperature to about 250 Fahrenheit, and then subjected to strong compression in moldsof the proper size and form and kept under pressure untilcooled to about 100 Fahrenheit.
For bearing-boxes for two-inch shafts-sueh as are extensively used for the line-shafting of cotton and other mills-my material maybe about three-eighths of an inch thick and of a form adapted to match in corresponding recesses in the metal boxes. The pressure should be from one thousand to one hundred thousand pounds per square inch. The hydraulic or other press employed should be adapted to follow and maintain the pressure as the material yields. After removal from the press my molded bearings or linings therefor are detached from their molds and embedded in ground sulphate of lime or analogous neutral supporting material, which will aid them to keep their shape and subject them thus conditioned to a temperature of from 300 to 400 Fahrenheit and maintain this for a period of from one hour upward, according to the thickness of the box or lining therefor. For the boxes of line-shafting of the character described (about three-eights of an inch thick) this final heating should be continued from one to two hours. After this heating it may be allowed to cool either slowly or rapidly, and is ready for use.
The material can be dressed by tools. I prefer for most uses to manufacture the linings a little large and reduce them subsequently. The surplus material may be removed by any ordinary cutting or abrading treatment.
The supporting-boxes of metal should be cast or otherwise produced in the proper form with the recess having a depth nearly but not quite equal to the thickness of the lining.
One important quality due to the use of Scheel-lac is a higher degree of conductivity of heat in the bearings, and consequently less disposition to overbearing by friction than is obtained with the use of shellac or other ordinary material.
The accompanying drawings form a part of this specification.
Figure 1 is a cross-section of a box with my lining in position. Fig. 2 is a plan view, and Fig. 3 is alongitudinal section of the same.
Similar letters of reference indicate corre' sponding parts in all the figures where they appear.
A is my lining, and B the inclosing-box, of metal. A lip B extends across each end; but it is of less height than the thickness of my lining A.
When in use, sperm-oil, lard-oil, .or any of the ordinary lubricants may be applied, either sparingly or liberally, without involving difficulties; but I prefer for most purposes that no lubricant shall be used. My box or lining will work satisfactorily under all ordinary log pressures and at all ordinary speeds, either with or Without lubrication or alternately in the two conditions.
The Scheel-lac described is purchasable in the market in any quantities under that name. It is low-priced, only from four to four and a half cents per pound. It is of no appreciable effect in the mixture at ordinary temperatures; but at the high temperatures at which I compress it gives a strong and uniform adhesive quality to the finely-disintegrated dry material which I use. My boxes or linings therefore possess great strength With a slight degree of elasticity. When carrying a rapidlyrevolving shaft under heavy pressure, the friction engendered raises the temperature; but the heat is communicated to the surrounding atmosphere or conducted away as rapidly as it is generated by the very slight friction experienced, so that there is no heating above 90 to 110 Fahrenheit.
I can use the ordinary'hard gums known as stick-lac, seed-lac, 0r shellac, instead of the Scheel-lac described, but the first-mentioned materials are much more expensive and not as good. My material similarly made and molded in proper shape may be also used for packings, gibs for cross-heads, and for machinery bearings generally.
In bearings for light Work I can omit the fiber. In such case I could use a larger proportion of the Scheel-lac, say, three hundred pounds of Seheel-lac to eight hundred pounds of graphite.
On commencing the manufacture the molds should be warmed sufficiently to take 011' the chill.
I claim as my invention 1. A machinery bearing composed of Scheellac combined with plumbago and fiber in the manner and substantially the proportions herein specified.
2. The process described of producing ma chinery bearings,which consists in intimately mixing dry fiber, pulverized Scheel-lac, and pulverized graphite, eompressingat a temperature of from 200 to 300 Fahrenheit, holding under pressure until cool, and subsequently releasing it and raising it uncompressed to between 300 and 400 Fahrenheit, all substantially as herein specified.
In testimony that I claim the invention above set forth I at'fix my signature in presence of two witnesses.
JAMES DE SELDING BROWN.
Witnesses:
CHARLES R'SEARLE, J osn L. FINGLE'ION.
Publications (1)
Publication Number | Publication Date |
---|---|
US484993A true US484993A (en) | 1892-10-25 |
Family
ID=2553842
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US484993D Expired - Lifetime US484993A (en) | Machinery bearing |
Country Status (1)
Country | Link |
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US (1) | US484993A (en) |
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0
- US US484993D patent/US484993A/en not_active Expired - Lifetime
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