US2237510A - Hammer-mill hammer - Google Patents
Hammer-mill hammer Download PDFInfo
- Publication number
- US2237510A US2237510A US288037A US28803739A US2237510A US 2237510 A US2237510 A US 2237510A US 288037 A US288037 A US 288037A US 28803739 A US28803739 A US 28803739A US 2237510 A US2237510 A US 2237510A
- Authority
- US
- United States
- Prior art keywords
- hammer
- tooth
- mill
- face
- faces
- 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
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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
Definitions
- My invention relates to hammer mills and more particularly to the hammers employed therein. It is the object of my invention to produce a hammer which will possess a more eflicient cutting action and have a longer effective life than prior hammers of which I am aware.
- the differential hardness of the faces in the cutting tooth i5 may be obtained in various ways. For example, I may case-carburize the hammers l3 before the grooves it are provided therein, and then cut the grooves l4 exposing the so constituted wears away, the relatively soft side face also wears away, thus keeping the tooth thin and sharp.
- Fig. 1 is a fragmental transverse section through a hammer mill
- Fig. 2 is an end elevation of one of the hammers
- Fig. 3 is a section on the line 3-3 of Fig, 2
- Fig. 4 is an iso-- metric view on an enlarged scale, illustrating one corner of a hammer embodying my invention
- Fig. 5 is a fragmental section on the line 55 of Fig. 3.
- the hammer mill shown in Fig. 1 includes a foraminous screen l0 and a rotor ll rotatably mounted within such screen.
- the rotor includes .an annular series of axially extending rods l2 upon which the hammers l3 are pivotally mounted.
- Each hammer I3 is shown as consisting of a flat plate of metal having in each of its .outer corners a generally V-shaped groove II which extends inwardly along the side face of the hammer from the outer end face thereof. Each of these grooves divides the outer corner of the hammer to form two teeth l5. If desired-and I have so indicated in the drawing-each of the hammers 13 may be reversible on the rotor H, being provided with symmetrically, arranged holes I! either of which may receive the rod l2. If this is done, all four corners of each hammer i3 are grooved as indicated in Figs. 2, 3, and 4; V
- Each of the teeth l5 has four faces (seeFig. 4) one (It) defined by the end face of the hamone side of each tooth, the sharpness of the teeth pling. As the tooth-face ll wears away under uncarburized core of the hammer. In the preferred method, the hammers are not quenched at the conclusion of the carburizing process but instead are left soft, the grooves it cut as by milling, and the hammer then hardened. If the hammers are quenched at the conclusion of the carburizing process, thereby hardening them, the grooves l4 may be cut by grinding.
- the side tooth-faces which are to remain soft protected against carburization, as by copper-plating.
- each corner of the hammer would form, in effect, a single cutting tooth.
- each corner of the hammer is made to possess two'cutting teeth; and the cutting action is consequently rendered more effective.
- Fig. 5 is an enlarged crosssection through one of the teeth I5
- the hardened portion of the tooth being indicated by stipthe influence of the cutting action
- the relatively soft side face l9 also wears away, the shape of the tooth after considerable wear being indicated by the dotted lines. It will be evident that in spite of wear the tooth-face ll will not increase in width and that as a result the tooth will remain sharp for extended periods of use.
- hammer for use in hammer mills,'comprising a generally rectangular metal plate adaptrrer-mill rotor, said plate being provided at at least one of its outer comerswith a groove opening in the end face of the hammer and extending inwardly along the adjacent side face of the hammer, the walls of such groove being softer than the outersurfaces of the hammer adjacent such outer corner.
- a hammer for use in hammer mills comprising a generally rectangular metal plate adapted at one end for pivotal attachment to the hammer-mill rotor, said plate being provided at at 1 least one of its outer corners with a groove opening in the end face of the hammer and extending inwardly along the adjacent side face of the hammer, to form two cutting teeth, at least i one side face of each of said teeth beingsofter than the other faces thereof.
- a hammer for use in hammer-mills said hammer being adapted at one end for pivotal attachment to the hammer-mill rotor and provided at the other end with a cutting tooth having opposite side faces disposed generally perpendicular to the axis of pivotal attachment of the hammer to the rotor, at least one of the side faces of said tooth being softer than the remaining faces thereof.
- a hammer for use in hammer-mills said hammer being adapted at one end for pivotal attachment to the hammer-mill rotor and provided at the other end with an integral cutting tooth having a relatively hard portion and a relatively soft portion, the hard portion being of approximately uniform thickness and extending generally perpendicularly to the axis of the hammer-mill rotor and the softer portion being contiguous to said harder portiomextending generally perpendicular to the axis of the hammermill rotor, and being of increasing thickness toward the base of the tooth.
Description
J. A. TANKEIRSLEY April 8, 1941.
HAMMER-MILL HAMMER Filed Aug. 2, 1939- IN VENTOR.
[/2755 Z Ewmmaszzg ATTORNEYfi,
Patent ed Apr. 8, 1941 HAMTMER-IVIILL HAMMER James A. Tankersley, Indianapolis, Ind, assignor to Heat Treating Incorporated, Indianapolis, Ind., a corporation of Indiana Application August 2, 1939, Serial No. 238,037
6 Claims.
My invention relates to hammer mills and more particularly to the hammers employed therein. It is the object of my invention to produce a hammer which will possess a more eflicient cutting action and have a longer effective life than prior hammers of which I am aware.
their cutting teeth, are desirably hardened; but
I find that the effective life may be even further increased if one of the side faces of each tooth is left soft. As the cutting edge of a tooth mer, one (ll) defined by the side of the hammer, one (l8) defined by a face of the hammer, and the fourth (i9) defined by a side wall of the groove M. In the preferred form of my invention at least one of the latter two faces, desirably the face I9, is made relatively soft so that as it wears away the tooth I will become thinner.
The differential hardness of the faces in the cutting tooth i5 may be obtained in various ways. For example, I may case-carburize the hammers l3 before the grooves it are provided therein, and then cut the grooves l4 exposing the so constituted wears away, the relatively soft side face also wears away, thus keeping the tooth thin and sharp.
The accompanying drawing illustrates my invention: Fig. 1 is a fragmental transverse section through a hammer mill; Fig. 2 is an end elevation of one of the hammers; Fig. 3 is a section on the line 3-3 of Fig, 2; Fig. 4 is an iso-- metric view on an enlarged scale, illustrating one corner of a hammer embodying my invention; and Fig. 5 is a fragmental section on the line 55 of Fig. 3. I v
The hammer mill shown in Fig. 1 includes a foraminous screen l0 and a rotor ll rotatably mounted within such screen. The rotor includes .an annular series of axially extending rods l2 upon which the hammers l3 are pivotally mounted.
Each hammer I3 is shown as consisting of a flat plate of metal having in each of its .outer corners a generally V-shaped groove II which extends inwardly along the side face of the hammer from the outer end face thereof. Each of these grooves divides the outer corner of the hammer to form two teeth l5. If desired-and I have so indicated in the drawing-each of the hammers 13 may be reversible on the rotor H, being provided with symmetrically, arranged holes I! either of which may receive the rod l2. If this is done, all four corners of each hammer i3 are grooved as indicated in Figs. 2, 3, and 4; V
Each of the teeth l5 has four faces (seeFig. 4) one (It) defined by the end face of the hamone side of each tooth, the sharpness of the teeth pling. As the tooth-face ll wears away under uncarburized core of the hammer. In the preferred method, the hammers are not quenched at the conclusion of the carburizing process but instead are left soft, the grooves it cut as by milling, and the hammer then hardened. If the hammers are quenched at the conclusion of the carburizing process, thereby hardening them, the grooves l4 may be cut by grinding.
Alternatively, the grooves it may be provided before the hammer is carburized, and the side tooth-faces which are to remain soft protected against carburization, as by copper-plating. In general, I contemplate the use of any hardening process which will render one side face of each cutting tooth relatively soft.
In the absence of the grooves l4, each corner of the hammer would form, in effect, a single cutting tooth. By providing a groove M in each corner of the hammer, each corner of the hammer is made to possess two'cutting teeth; and the cutting action is consequently rendered more effective.
Moreover, because of the relative softness of is preserved in spite of wear. This will be apparent from Fig. 5, which is an enlarged crosssection through one of the teeth I5, the hardened portion of the tooth being indicated by stipthe influence of the cutting action, the relatively soft side face l9 also wears away, the shape of the tooth after considerable wear being indicated by the dotted lines. It will be evident that in spite of wear the tooth-face ll will not increase in width and that as a result the tooth will remain sharp for extended periods of use.
I claim as my invention:
1.-A hammer for use in hammer mills,'comprising a generally rectangular metal plate adaptrrer-mill rotor, said plate being provided at at least one of its outer comerswith a groove opening in the end face of the hammer and extending inwardly along the adjacent side face of the hammer, the walls of such groove being softer than the outersurfaces of the hammer adjacent such outer corner.
2. A hammer for use in hammer mills, comprising a generally rectangular metal plate adapted at one end for pivotal attachment to the hammer-mill rotor, said plate being provided at at 1 least one of its outer corners with a groove opening in the end face of the hammer and extending inwardly along the adjacent side face of the hammer, to form two cutting teeth, at least i one side face of each of said teeth beingsofter than the other faces thereof.
3. A hammer for use in hammer-mills, said hammer being adapted at one end for pivotal attachment to the hammer-mill rotor and provided at the other end with a cutting tooth having opposite side faces disposed generally perpendicular to the axis of pivotal attachment of the hammer to the rotor, at least one of the side faces of said tooth being softer than the remaining faces thereof.
4. The invention set forth in claim 1 with the addition that said hammer is of low-carbon steel. the outer faces of the hammer being carburized and the walls of said groove being uncarburized. 5. The invention set forth in claim 3 withv the addition that said hammer and tooth are of low-carbon steel, the harder faces of said tooth being carburized and the softer face or faces uncarburized.
6. A hammer for use in hammer-mills, said hammer being adapted at one end for pivotal attachment to the hammer-mill rotor and provided at the other end with an integral cutting tooth having a relatively hard portion and a relatively soft portion, the hard portion being of approximately uniform thickness and extending generally perpendicularly to the axis of the hammer-mill rotor and the softer portion being contiguous to said harder portiomextending generally perpendicular to the axis of the hammermill rotor, and being of increasing thickness toward the base of the tooth.
JAMES A. TANUIRSLEY.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US288037A US2237510A (en) | 1939-08-02 | 1939-08-02 | Hammer-mill hammer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US288037A US2237510A (en) | 1939-08-02 | 1939-08-02 | Hammer-mill hammer |
Publications (1)
Publication Number | Publication Date |
---|---|
US2237510A true US2237510A (en) | 1941-04-08 |
Family
ID=23105475
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US288037A Expired - Lifetime US2237510A (en) | 1939-08-02 | 1939-08-02 | Hammer-mill hammer |
Country Status (1)
Country | Link |
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US (1) | US2237510A (en) |
Cited By (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2473531A (en) * | 1943-09-17 | 1949-06-21 | Birtman Electric Co | Disintegrator rotor for hammer mills and the like |
US2559701A (en) * | 1946-05-22 | 1951-07-10 | M And M Wood Working Company | Hog machine having rotary cutter and feed conveyer |
US2566103A (en) * | 1947-11-05 | 1951-08-28 | Weston David | Liners for material crushing and grinding mills |
US2602597A (en) * | 1951-06-06 | 1952-07-08 | Gerald L Ball | Rotary hammer for feed mills |
US2712417A (en) * | 1952-04-04 | 1955-07-05 | Sanning C Jensen | Rotary striking hammer with tip-attached wear member |
US2714995A (en) * | 1952-05-26 | 1955-08-09 | Sanning C Jensen | Self-sharpening laminated hammer mill knife |
US2810529A (en) * | 1957-10-22 | Hammermill rotor including paired | ||
US3058679A (en) * | 1958-04-04 | 1962-10-16 | Adams Engineering Company | Impact crusher |
US3069102A (en) * | 1959-07-21 | 1962-12-18 | Dante S Cusi | Comminuting method and apparatus |
US3184172A (en) * | 1961-03-24 | 1965-05-18 | Gen Mills Inc | Impact milling apparatus |
US3187385A (en) * | 1959-07-21 | 1965-06-08 | Dante S Cusi | Comminuting method and apparatus |
DE1239184B (en) * | 1963-09-13 | 1967-04-20 | Ing Walter Godderidge | Hammer for hammer mills |
US3491959A (en) * | 1966-12-19 | 1970-01-27 | Sanning C Jensen | Blade system for hammer mills |
US3561686A (en) * | 1968-06-25 | 1971-02-09 | Glenn D Hedrick | Hammermill hammers |
US3738586A (en) * | 1971-07-14 | 1973-06-12 | Abex Corp | An improved hammer for hammer mills |
US3779319A (en) * | 1972-04-24 | 1973-12-18 | T Pease | Mobile snow working apparatus with adjustable height flailer |
US20110042498A1 (en) * | 2004-08-11 | 2011-02-24 | Young Roger T | Hammer |
US8033490B1 (en) | 2004-08-11 | 2011-10-11 | Genesis Iii, Inc. | Hammer |
US8141804B1 (en) | 2009-05-22 | 2012-03-27 | Genesis Iii, Inc. | Curved hammer |
US8800903B1 (en) | 2011-08-03 | 2014-08-12 | Roger T. Young | Multi-connector hammer and protective arm |
USD731565S1 (en) | 2013-11-14 | 2015-06-09 | Esco Corporation | Stepped hammer for shredding machines |
RU2563696C1 (en) * | 2014-07-03 | 2015-09-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Алтайский государственный аграрный университет" (ФГБОУ ВПО АГАУ) | Method of production of plate hammer of feed grinder |
USD839934S1 (en) | 2017-12-06 | 2019-02-05 | Roger Young | Swing hammer |
USD840447S1 (en) | 2017-12-06 | 2019-02-12 | Roger Young | Swing hammer |
US10201814B1 (en) | 2004-08-11 | 2019-02-12 | Genesis Iii, Inc. | Hammer |
US10207274B1 (en) | 2017-08-21 | 2019-02-19 | Roger Young | Non-forged hammermill hammer |
US10300491B2 (en) | 2016-12-08 | 2019-05-28 | Jacobs Corporation | Hammer mill hammer with grooves for receiving hard facing material and method of making same |
US10413908B2 (en) | 2016-04-07 | 2019-09-17 | Jacobs Corporation | Hammer mill hammer with non-circular rod hole in inner bearing race |
USD861048S1 (en) | 2017-12-06 | 2019-09-24 | Roger Young | Swing hammer |
US10478824B2 (en) | 2017-08-21 | 2019-11-19 | Bliss Industries, Llc | System and method for installing hammers |
US10486160B2 (en) | 2017-08-21 | 2019-11-26 | Bliss Industries, Llc | Method of replacing hammers and spacers |
US10610870B2 (en) | 2017-08-21 | 2020-04-07 | Bliss Industries, Llc | Hot and cold forming hammer and method of assembly |
USD905136S1 (en) | 2018-03-05 | 2020-12-15 | Bliss Industries, Llc | Hammermill hammer |
US11839879B2 (en) | 2020-10-09 | 2023-12-12 | Genesis Iii, Inc. | Hammer |
-
1939
- 1939-08-02 US US288037A patent/US2237510A/en not_active Expired - Lifetime
Cited By (50)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2810529A (en) * | 1957-10-22 | Hammermill rotor including paired | ||
US2473531A (en) * | 1943-09-17 | 1949-06-21 | Birtman Electric Co | Disintegrator rotor for hammer mills and the like |
US2559701A (en) * | 1946-05-22 | 1951-07-10 | M And M Wood Working Company | Hog machine having rotary cutter and feed conveyer |
US2566103A (en) * | 1947-11-05 | 1951-08-28 | Weston David | Liners for material crushing and grinding mills |
US2602597A (en) * | 1951-06-06 | 1952-07-08 | Gerald L Ball | Rotary hammer for feed mills |
US2712417A (en) * | 1952-04-04 | 1955-07-05 | Sanning C Jensen | Rotary striking hammer with tip-attached wear member |
US2714995A (en) * | 1952-05-26 | 1955-08-09 | Sanning C Jensen | Self-sharpening laminated hammer mill knife |
US3058679A (en) * | 1958-04-04 | 1962-10-16 | Adams Engineering Company | Impact crusher |
US3069102A (en) * | 1959-07-21 | 1962-12-18 | Dante S Cusi | Comminuting method and apparatus |
US3187385A (en) * | 1959-07-21 | 1965-06-08 | Dante S Cusi | Comminuting method and apparatus |
US3184172A (en) * | 1961-03-24 | 1965-05-18 | Gen Mills Inc | Impact milling apparatus |
DE1239184B (en) * | 1963-09-13 | 1967-04-20 | Ing Walter Godderidge | Hammer for hammer mills |
US3491959A (en) * | 1966-12-19 | 1970-01-27 | Sanning C Jensen | Blade system for hammer mills |
US3561686A (en) * | 1968-06-25 | 1971-02-09 | Glenn D Hedrick | Hammermill hammers |
US3738586A (en) * | 1971-07-14 | 1973-06-12 | Abex Corp | An improved hammer for hammer mills |
US3779319A (en) * | 1972-04-24 | 1973-12-18 | T Pease | Mobile snow working apparatus with adjustable height flailer |
US20110042498A1 (en) * | 2004-08-11 | 2011-02-24 | Young Roger T | Hammer |
US11185866B2 (en) | 2004-08-11 | 2021-11-30 | Genesis Iii, Inc. | Hammer |
US11103875B1 (en) | 2004-08-11 | 2021-08-31 | Genesis Iii, Inc. | Hammer |
US8708263B2 (en) | 2004-08-11 | 2014-04-29 | Roger T. Young | Hammer |
US10201814B1 (en) | 2004-08-11 | 2019-02-12 | Genesis Iii, Inc. | Hammer |
US8960581B1 (en) | 2004-08-11 | 2015-02-24 | Genesis Iii, Inc. | Hammer |
US8033490B1 (en) | 2004-08-11 | 2011-10-11 | Genesis Iii, Inc. | Hammer |
US9737894B1 (en) | 2004-08-11 | 2017-08-22 | Genesis Iii, Inc. | Hammer |
US9566584B2 (en) | 2004-08-11 | 2017-02-14 | Genesis Iii, Inc. | Hammer |
US11759789B1 (en) | 2009-05-22 | 2023-09-19 | Genesis Iii, Inc. | Curved hammer |
US8998120B1 (en) | 2009-05-22 | 2015-04-07 | Genesis Iii, Inc. | Curved hammer |
US8141804B1 (en) | 2009-05-22 | 2012-03-27 | Genesis Iii, Inc. | Curved hammer |
US10857540B1 (en) | 2009-05-22 | 2020-12-08 | Genesis Iii, Inc. | Curved hammer |
US9358546B1 (en) | 2011-08-03 | 2016-06-07 | Genesis Iii, Inc. | Multi-connector hammer and protective arm |
US10486159B2 (en) | 2011-08-03 | 2019-11-26 | Genesis Iii, Inc. | Multi-connector hammer |
US11396021B2 (en) | 2011-08-03 | 2022-07-26 | Genesis Iii, Inc. | Multi-connector hammer |
US8800903B1 (en) | 2011-08-03 | 2014-08-12 | Roger T. Young | Multi-connector hammer and protective arm |
USD731565S1 (en) | 2013-11-14 | 2015-06-09 | Esco Corporation | Stepped hammer for shredding machines |
RU2563696C1 (en) * | 2014-07-03 | 2015-09-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Алтайский государственный аграрный университет" (ФГБОУ ВПО АГАУ) | Method of production of plate hammer of feed grinder |
US10413908B2 (en) | 2016-04-07 | 2019-09-17 | Jacobs Corporation | Hammer mill hammer with non-circular rod hole in inner bearing race |
US20190247857A1 (en) * | 2016-12-08 | 2019-08-15 | Jacobs Corporation | Method of making a hammer mill hammer with grooves for receiving hard facing material |
US11951485B2 (en) * | 2016-12-08 | 2024-04-09 | Jacobs Corporation | Method of making a hammer mill hammer with grooves for receiving hard facing material |
US10300491B2 (en) | 2016-12-08 | 2019-05-28 | Jacobs Corporation | Hammer mill hammer with grooves for receiving hard facing material and method of making same |
US10486160B2 (en) | 2017-08-21 | 2019-11-26 | Bliss Industries, Llc | Method of replacing hammers and spacers |
US10507468B2 (en) | 2017-08-21 | 2019-12-17 | Bliss Industries, Llc | Non-forged hammermill hammer |
US10610870B2 (en) | 2017-08-21 | 2020-04-07 | Bliss Industries, Llc | Hot and cold forming hammer and method of assembly |
US10207274B1 (en) | 2017-08-21 | 2019-02-19 | Roger Young | Non-forged hammermill hammer |
US10478824B2 (en) | 2017-08-21 | 2019-11-19 | Bliss Industries, Llc | System and method for installing hammers |
USD857066S1 (en) | 2017-12-06 | 2019-08-20 | Roger Young | Swing hammer |
USD840447S1 (en) | 2017-12-06 | 2019-02-12 | Roger Young | Swing hammer |
USD839934S1 (en) | 2017-12-06 | 2019-02-05 | Roger Young | Swing hammer |
USD861048S1 (en) | 2017-12-06 | 2019-09-24 | Roger Young | Swing hammer |
USD905136S1 (en) | 2018-03-05 | 2020-12-15 | Bliss Industries, Llc | Hammermill hammer |
US11839879B2 (en) | 2020-10-09 | 2023-12-12 | Genesis Iii, Inc. | Hammer |
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