US198994A - Improvement in pulverizing-machines - Google Patents
Improvement in pulverizing-machines Download PDFInfo
- Publication number
- US198994A US198994A US198994DA US198994A US 198994 A US198994 A US 198994A US 198994D A US198994D A US 198994DA US 198994 A US198994 A US 198994A
- Authority
- US
- United States
- Prior art keywords
- machines
- case
- projections
- pulverizing
- improvement
- 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
- 239000002184 metal Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 229910000754 Wrought iron Inorganic materials 0.000 description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 4
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 229910000760 Hardened steel Inorganic materials 0.000 description 2
- 210000001503 Joints Anatomy 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- -1 earths Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000005445 natural product Substances 0.000 description 2
- 229930014626 natural products Natural products 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 229910052904 quartz Inorganic materials 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/28—Shape or construction of beater elements
- B02C13/2804—Shape or construction of beater elements the beater elements being rigidly connected to the rotor
Definitions
- This invention has reference to improvements on machines used for disintegrating, grinding, or reducing to powder various substances, such as earths, stones, quartz, grains, and other natural products, also manufactured articles, such as litharge, colors, and other chemical compounds, and also all other substances requiring to be finely pulverized;
- Figure 1 is a side elevation of my improved machine with part of the case removed.
- Fig. 2 is a front elevation.
- Fig. 3 is a transverse section of the case and the rotary beater taken parallel with the. shaft.
- Fig. 4 is a detail of the revolving beater in section.
- the machine consists, essentially, of the stationary metallic case and the inclosed revolving beater, (shown in the drawing,) which, in general form, are like machines of this character heretofore used, but which have been of such faulty construction that they have failed to stand the wear of use, which, owing to the high velocity required of the beater, is very severe.
- the two sides or heads A of the case have been fastened to rim B by bolts passing through them and the flanges G of the rim, and extending across the front of the rim, so that they were surrounded by the atmosphere between the two flanges, and thus were not so much heated as the rim by the friction of the machine, and, consequently, would not expand equally with it; and, generally, the case has been made of cast-iron,'while the bolts were wrought-iron, which aggravated the difficulty of unequal expansion, thus causing looseness of the case and breakages, which prevented the keeping of the case tight, as it is required, and soon destroyed it altogether.
- the revolving beater which consists of a disk, F, with projections G, has been heretofore constructed of cast metal for the disk,
- My improvement in the beater consists of making both the disk and projections of rolled or hammered metal, preferably steel, and in connecting them by dovetail joints, as shown, whereby they do not become loose by expansion or contraction, and it is impossible for the beaters to be thrown off tangentially, even though they be not tightly fitted, and all bolts and screws for holding them on are avoided, only a small key, H, being required to fasten them against lateral movement, which key may be very light, as the machine does not exert any force against it; whereas, in the common arrangement, the bolts are subjected to the powerful effect of the centrifugal force generated by the rotation of the disk, besides the 'strains incident to the grinding of the material under treatment.
- I represents wearing-plates of hardened steel, applied to the faces of the projections for protecting them from wear, and for being removed from time to time to renew the wearing-surfaces more cheaply than the projections could be, which plates, together with the faces.v of the projections to which they are attached,
Description
H. B. MOORE.
Pulverizing Machines. No. 198,994.
Patented Jan. 8, 1878.
IL'PETERS. PHOTD-UTNOGFAPNER, WASHINGTON. D Cw UNITED Sirrirns PATENT OFFICE.
HARRISON R O'ORE, or, BROOKLYN, NEW YORK.
IMPROVEMENT IN, PULIVERIZ-INFG-MACHINES;
Specification forming part of Letters'PatentNo. 198,994, dated January 8, 1878; application filed November 29, 1876.
To all whom it may concern:
Beit known that I, HARRISON BRAY MOO of Brooklyn, Kings county, and State of New York, have invented new and useful Improvements in Pulverizing and Grinding Machines, of which the following is a specification:
This invention has reference to improvements on machines used for disintegrating, grinding, or reducing to powder various substances, such as earths, stones, quartz, grains, and other natural products, also manufactured articles, such as litharge, colors, and other chemical compounds, and also all other substances requiring to be finely pulverized;
, and it consists, essentially, in a mode of securing the keys which fasten the beater projections in the disk by the wearing-plates.
In the accompanying drawings, Figure 1 is a side elevation of my improved machine with part of the case removed. Fig. 2 is a front elevation. Fig. 3 is a transverse section of the case and the rotary beater taken parallel with the. shaft. Fig. 4 is a detail of the revolving beater in section.
The machine consists, essentially, of the stationary metallic case and the inclosed revolving beater, (shown in the drawing,) which, in general form, are like machines of this character heretofore used, but which have been of such faulty construction that they have failed to stand the wear of use, which, owing to the high velocity required of the beater, is very severe.
Heretofore the two sides or heads A of the case have been fastened to rim B by bolts passing through them and the flanges G of the rim, and extending across the front of the rim, so that they were surrounded by the atmosphere between the two flanges, and thus were not so much heated as the rim by the friction of the machine, and, consequently, would not expand equally with it; and, generally, the case has been made of cast-iron,'while the bolts were wrought-iron, which aggravated the difficulty of unequal expansion, thus causing looseness of the case and breakages, which prevented the keeping of the case tight, as it is required, and soon destroyed it altogether.
, For remedying this defect I propose to make the case entirely of rolled metal, preferably- Bessemer steel, and to bolt or rivet the heads or sides A of the caseindependently to the flanges O, as shown at l) and E, thus using much shorter bolts or rivets, and intimately confining them with the metal of the case, so that both are alike exposed to heat and cold, and will expand and contract alike, and thus avoid all undue strains on the bolts or rivets, and enable the case to keep perfectly tight.
The revolving beater, which consists of a disk, F, with projections G, has been heretofore constructed of cast metal for the disk,
with steel or wrought-iron projections bolted,
screwed, or riveted on, and, like the case, has been subject to looseness by unequal expansion and contraction, which caused the projections to break off frequently, and being very heavy and running very fast, they were projected through the case with great force, destroying it and endangering life and property.
My improvement in the beater consists of making both the disk and projections of rolled or hammered metal, preferably steel, and in connecting them by dovetail joints, as shown, whereby they do not become loose by expansion or contraction, and it is impossible for the beaters to be thrown off tangentially, even though they be not tightly fitted, and all bolts and screws for holding them on are avoided, only a small key, H, being required to fasten them against lateral movement, which key may be very light, as the machine does not exert any force against it; whereas, in the common arrangement, the bolts are subjected to the powerful effect of the centrifugal force generated by the rotation of the disk, besides the 'strains incident to the grinding of the material under treatment.
I represents wearing-plates of hardened steel, applied to the faces of the projections for protecting them from wear, and for being removed from time to time to renew the wearing-surfaces more cheaply than the projections could be, which plates, together with the faces.v of the projections to which they are attached,
I propose to make square, and to fasten by a bolt, J, in the center, so that all the edges of v the plates will serve alike at the wearing-point, which is at the outermost edge from the center disk, and the plate may be turned from time to time to change the edges as they wear away; and the plates may also be reversed as Having thus described my invention, What I claim, and desire to secure by Letters Patent, is-
The Wearing-plates of the beater projections and the keys for fastening said projections, combined and arranged in the manner described, for locking the keys by the plates, substantially as specified.
HARRISON B. MOORE.
Witnesses F. A. THAYER, WM. J. MORGAN.
Publications (1)
Publication Number | Publication Date |
---|---|
US198994A true US198994A (en) | 1878-01-08 |
Family
ID=2268401
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US198994D Expired - Lifetime US198994A (en) | Improvement in pulverizing-machines |
Country Status (1)
Country | Link |
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US (1) | US198994A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2639863A (en) * | 1950-07-21 | 1953-05-26 | Riley Stoker Corp | Hammer and wear-plate structure for attrition pulverizers |
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0
- US US198994D patent/US198994A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2639863A (en) * | 1950-07-21 | 1953-05-26 | Riley Stoker Corp | Hammer and wear-plate structure for attrition pulverizers |
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