US1889129A - Hammer mill - Google Patents
Hammer mill Download PDFInfo
- Publication number
- US1889129A US1889129A US498617A US49861730A US1889129A US 1889129 A US1889129 A US 1889129A US 498617 A US498617 A US 498617A US 49861730 A US49861730 A US 49861730A US 1889129 A US1889129 A US 1889129A
- Authority
- US
- United States
- Prior art keywords
- hammer
- hammers
- hammer mill
- mill
- shaft
- 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
- This invention relates to mills adapted for the crushing or pulverizing of ores, cement raw materials and the like and especially to mills of the type known as hammer mills.
- the hammers In the usual type of hammer mills as used for crushing limestone shale, ore and other materials, the hammers, as is well known, are arranged about a rapidly rotating shaft and revolve with it with their working faces in operative relation with an anvil or grate and the hammer action of the mill and also its capability of operating upon large pieces of rock or the like increase with the weight of the hammers.
- the hammers are formed as hollow castings, and by casting the hammers with sufficiently large cavities the formation of blowholes in the material is avoided and the mass can be thoroughly hardened.
- the cavity of the casting is of greatest volume adjacent the point of suspension of the hammers so as to reduce the waste of material when worn hammers have to be replaced.
- a further economy in material is obtained in that the hammers are so supported as to be capable of being moved towards their grinding surface when they have been worn and for this purpose they are mounted on eccentric bushings. By this arrangement the hammering action is increased while the solid material of the hammers can be utilized to a greater extent before it is necessary to change them.
- Figure 1 shows a cross section of a portion of a hammer mill.
- Figure 2 is a side view of one of the hammers.
- gigure 3 is a sectional view of a hammer
- Figure 4 is a detail view, partly in section, showing the formation and support of one of the hammers of a mill, a portion of the supporting and actuating shaft being shown in elevation.
- the hammers 1 are pivotally hung in arms 2 keyed to the rotary shaft 3 of the mill. During the rotation of the shaft 3 and the revolution of the hammers 1 the material is crushed partly against an anvil 4 and partly against grate bars 5.
- Each hammer as shown in Figures 2 and 3, consists of a substantially large hammer head 1 and a shaft 6.
- shaft 6 is provided with studs 7 so that the hammer may be mounted pivotally in the arms 2 and preferably in eccentric bushes 9 in the arms 2.
- the hammers are made hollow, as indicated at 8, such hollowing of the hammer making it possible to produce a hammer which will have the greatest possible hammering action with the smallest possible amount of material.
- the cavity 8 is axially longitudinal with respect to the hammer and is larger in the shaft 6 than in the head of the hammer and is open at each end through suitable passages.
- the pivots 7 of the hammer 1 are mounted in eccentric bushings 9 supported in the arms 2. These eccentric bushings are capable of adjustment so that as the hammers are Worn they may be approached towards the anvil 4- and the grate bars 5 and consequently may have a longer useful life.
- a hammer mill having a pivotally mounted and axially elongated hammer supported about a rotary shaft, the hammer having a shank portion and a head larger than the shank portion, each hammer having an axially longitudinal cavity with its volume larger in the shank of the hammer than in the head of the hammer and adjacent the point of suspension of the hammer, the cavity being open at each end.
Description
Nov. 29, 1932. NlELsEN 1,889,129
HAMMER MILL Filed Nov. 28, 1950 2 Sheets-Sheet 1 NOV. 29, 1932. N L N' 1,889,129
I HAMMER MILL Filed NOV. 28, 1950 2 Sheets-Sheet 2 Patented Nov. 29, 1932 UNITED STATES PATENT- ,OFFICE T CHRISTIAN NIELSEN, 0F COPENHAGEN, DENMARK, ASSIGNOR TO F. L. SMIDTH. 8::
NEW YORK, N. Y., A CORPQBATION OF NEW JERSEY V HAMMER MILL Application filed November 28, 1930, Serial No. 498,617, and in Great Britain May 15, 1930.
This invention relates to mills adapted for the crushing or pulverizing of ores, cement raw materials and the like and especially to mills of the type known as hammer mills.
In the usual type of hammer mills as used for crushing limestone shale, ore and other materials, the hammers, as is well known, are arranged about a rapidly rotating shaft and revolve with it with their working faces in operative relation with an anvil or grate and the hammer action of the mill and also its capability of operating upon large pieces of rock or the like increase with the weight of the hammers. In order to provide for the use of hammers of sufficient weight it has been necessary, in the case of hammer mills of large output and which have to operate upon large pieces of material, to increase the volume of the hammers to such an extent that it has been difficult to produce such large hammers by forging, it being impossible to forge the material of the hammer throughout and difficult to harden the hammers satisfactorily. Difiiculties also occur when the hammers are cast, as segregation and the formation of blow holes are liable to occur in the interior of heavy castings. A further serious drawback is the loss in material which is caused by the frequent replacement of the hammers which have been worn to such an extent as to be no longer suitable for efiicient operation and have to be discarded.
It is the object of the present invention to obviate the difiiculties above referred to.
In accordance with the invention the hammers are formed as hollow castings, and by casting the hammers with sufficiently large cavities the formation of blowholes in the material is avoided and the mass can be thoroughly hardened. The cavity of the casting is of greatest volume adjacent the point of suspension of the hammers so as to reduce the waste of material when worn hammers have to be replaced. A further economy in material is obtained in that the hammers are so supported as to be capable of being moved towards their grinding surface when they have been worn and for this purpose they are mounted on eccentric bushings. By this arrangement the hammering action is increased while the solid material of the hammers can be utilized to a greater extent before it is necessary to change them.
The invention will now be described with reference to the accompanying drawings, wherein Figure 1 shows a cross section of a portion of a hammer mill.
Figure 2 is a side view of one of the hammers.
Figure 4 is a detail view, partly in section, showing the formation and support of one of the hammers of a mill, a portion of the supporting and actuating shaft being shown in elevation.
As will be seen from the drawings, and more particularly from Figures 1 and 4, the hammers 1 are pivotally hung in arms 2 keyed to the rotary shaft 3 of the mill. During the rotation of the shaft 3 and the revolution of the hammers 1 the material is crushed partly against an anvil 4 and partly against grate bars 5. Each hammer, as shown in Figures 2 and 3, consists of a substantially large hammer head 1 and a shaft 6. The
In accordance with the invention, the hammers are made hollow, as indicated at 8, such hollowing of the hammer making it possible to produce a hammer which will have the greatest possible hammering action with the smallest possible amount of material. As will be seen in Figure 3, the cavity 8 is axially longitudinal with respect to the hammer and is larger in the shaft 6 than in the head of the hammer and is open at each end through suitable passages. As will be seen in Figure 4, the pivots 7 of the hammer 1 are mounted in eccentric bushings 9 supported in the arms 2. These eccentric bushings are capable of adjustment so that as the hammers are Worn they may be approached towards the anvil 4- and the grate bars 5 and consequently may have a longer useful life.
I claim as my invention:
A hammer mill having a pivotally mounted and axially elongated hammer supported about a rotary shaft, the hammer having a shank portion and a head larger than the shank portion, each hammer having an axially longitudinal cavity with its volume larger in the shank of the hammer than in the head of the hammer and adjacent the point of suspension of the hammer, the cavity being open at each end. i
This specification signed this 12th day of November, A. D. 1930.
CHRISTIAN NIELSEN.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1889129X | 1930-05-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
US1889129A true US1889129A (en) | 1932-11-29 |
Family
ID=10892875
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US498617A Expired - Lifetime US1889129A (en) | 1930-05-15 | 1930-11-28 | Hammer mill |
Country Status (1)
Country | Link |
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US (1) | US1889129A (en) |
Cited By (43)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3044718A (en) * | 1958-08-21 | 1962-07-17 | Sackett & Sons Co A J | Chain hammer mill |
US3129929A (en) * | 1961-06-12 | 1964-04-21 | Calvert A I George | Rotary impact curb breaker |
US3278126A (en) * | 1963-09-17 | 1966-10-11 | Abex Corp | Hammers |
US5497950A (en) * | 1993-07-12 | 1996-03-12 | Schroedl; Hermann | Rotor for a disintegrating machine |
US5842653A (en) * | 1997-01-24 | 1998-12-01 | Global Processing Systems, Inc. | Slow speed hammermill for size reduction of wood chips |
US5863003A (en) * | 1995-07-26 | 1999-01-26 | Smith; Leward M. | Waste processing machine |
US6016855A (en) * | 1999-03-04 | 2000-01-25 | Tramor, Inc. | Hood assembly for a wood chipper |
US6032707A (en) * | 1998-12-22 | 2000-03-07 | Tramor, Inc. | Drum assembly for a wood chipper |
US6036125A (en) * | 1998-12-22 | 2000-03-14 | Tramor, Inc. | Wood chipper |
US6047912A (en) * | 1998-05-01 | 2000-04-11 | Smith; Leward N. | Break-away processing tool for a waste processing machine |
US6059210A (en) * | 1999-01-20 | 2000-05-09 | Smith; Leward N. | Rotor assembly for a waste processing machine |
US6357684B1 (en) | 2000-10-31 | 2002-03-19 | Tramor, Inc. | Adjustable tension feed wheel assembly for a wood chipper |
US6517020B1 (en) | 2000-09-08 | 2003-02-11 | Leward N. Smith | Replaceable raker assembly for processing tool of waste processing machine |
US6591973B2 (en) | 2001-06-04 | 2003-07-15 | Leward N. Smith | Sideboard assembly for waste processing machine |
US6729567B1 (en) | 2001-07-31 | 2004-05-04 | Tramor, Inc. | Side feed wheel assembly for wood chipper |
US20040104798A1 (en) * | 2002-11-26 | 2004-06-03 | Ambient Corporation | Arrangement of an inductive coupler for power line communications |
US6804871B1 (en) | 2002-05-03 | 2004-10-19 | Leward Nile Smith | Method for aligning clutch assembly |
US6814320B1 (en) | 2001-12-10 | 2004-11-09 | Tramor, Inc. | Reversing automatic feed wheel assembly for wood chipper |
US6845931B1 (en) | 2001-10-03 | 2005-01-25 | Leward Nile Smith | Multi-functional tool assembly for processing tool of waste processing machine |
US6955310B1 (en) | 2002-05-21 | 2005-10-18 | Tramor, Inc. | Remote control assembly for wood chipper |
US7007874B1 (en) | 2002-01-08 | 2006-03-07 | Leward Nile Smith | Shroud assembly for waste processing machine |
US7163166B1 (en) | 2004-03-31 | 2007-01-16 | Leward Nile Smith | Rotatable assembly for machines |
US20080061176A1 (en) * | 2001-10-03 | 2008-03-13 | Smith Leward N | Multi-functional tool assembly for processing tool of material processing machine |
US7384011B1 (en) | 2001-10-03 | 2008-06-10 | Leward Nile Smith | Multi-functional tool assembly for processing tool of waste processing machine |
DE102007000835A1 (en) * | 2007-10-09 | 2009-04-16 | Hazemag & Epr Gmbh | Breaking tool for a breaking device |
US20110042498A1 (en) * | 2004-08-11 | 2011-02-24 | Young Roger T | Hammer |
US8033490B1 (en) | 2004-08-11 | 2011-10-11 | Genesis Iii, Inc. | Hammer |
US8109303B1 (en) | 2006-04-27 | 2012-02-07 | Tramor, Inc. | Stump grinder having an automatic depth control system |
US8141804B1 (en) | 2009-05-22 | 2012-03-27 | Genesis Iii, Inc. | Curved hammer |
US20120256029A1 (en) * | 2004-08-11 | 2012-10-11 | Jonathan Paul | 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 |
US10166696B2 (en) | 2011-07-21 | 2019-01-01 | Bandit Industries, Inc. | Safety device, backflow reduction device, conformable wood processing device, and methods thereof for a waste processing system |
USD839934S1 (en) | 2017-12-06 | 2019-02-05 | Roger Young | Swing hammer |
USD840447S1 (en) | 2017-12-06 | 2019-02-12 | Roger Young | Swing hammer |
US10207274B1 (en) | 2017-08-21 | 2019-02-19 | Roger Young | Non-forged hammermill hammer |
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 |
-
1930
- 1930-11-28 US US498617A patent/US1889129A/en not_active Expired - Lifetime
Cited By (64)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3044718A (en) * | 1958-08-21 | 1962-07-17 | Sackett & Sons Co A J | Chain hammer mill |
US3129929A (en) * | 1961-06-12 | 1964-04-21 | Calvert A I George | Rotary impact curb breaker |
US3278126A (en) * | 1963-09-17 | 1966-10-11 | Abex Corp | Hammers |
US5497950A (en) * | 1993-07-12 | 1996-03-12 | Schroedl; Hermann | Rotor for a disintegrating machine |
US6299082B1 (en) | 1995-07-26 | 2001-10-09 | Leward N. Smith | Waste processing machine |
US5863003A (en) * | 1995-07-26 | 1999-01-26 | Smith; Leward M. | Waste processing machine |
US5904306A (en) * | 1997-01-24 | 1999-05-18 | Global Processing Systems, Inc. | Slow speed hammermill for size reduction of wood chips |
US5842653A (en) * | 1997-01-24 | 1998-12-01 | Global Processing Systems, Inc. | Slow speed hammermill for size reduction of wood chips |
US6047912A (en) * | 1998-05-01 | 2000-04-11 | Smith; Leward N. | Break-away processing tool for a waste processing machine |
US6032707A (en) * | 1998-12-22 | 2000-03-07 | Tramor, Inc. | Drum assembly for a wood chipper |
US6036125A (en) * | 1998-12-22 | 2000-03-14 | Tramor, Inc. | Wood chipper |
US6059210A (en) * | 1999-01-20 | 2000-05-09 | Smith; Leward N. | Rotor assembly for a waste processing machine |
US6016855A (en) * | 1999-03-04 | 2000-01-25 | Tramor, Inc. | Hood assembly for a wood chipper |
US6517020B1 (en) | 2000-09-08 | 2003-02-11 | Leward N. Smith | Replaceable raker assembly for processing tool of waste processing machine |
US6357684B1 (en) | 2000-10-31 | 2002-03-19 | Tramor, Inc. | Adjustable tension feed wheel assembly for a wood chipper |
US6591973B2 (en) | 2001-06-04 | 2003-07-15 | Leward N. Smith | Sideboard assembly for waste processing machine |
US6729567B1 (en) | 2001-07-31 | 2004-05-04 | Tramor, Inc. | Side feed wheel assembly for wood chipper |
US20080061176A1 (en) * | 2001-10-03 | 2008-03-13 | Smith Leward N | Multi-functional tool assembly for processing tool of material processing machine |
US7726594B2 (en) | 2001-10-03 | 2010-06-01 | Leward Nile Smith | Multi-functional tool assembly for processing tool of material processing machine |
US6845931B1 (en) | 2001-10-03 | 2005-01-25 | Leward Nile Smith | Multi-functional tool assembly for processing tool of waste processing machine |
US7384011B1 (en) | 2001-10-03 | 2008-06-10 | Leward Nile Smith | Multi-functional tool assembly for processing tool of waste processing machine |
US7121485B2 (en) | 2001-10-03 | 2006-10-17 | Leward Nile Smith | Multi-functional tool assembly for processing tool of waste processing machine |
US6814320B1 (en) | 2001-12-10 | 2004-11-09 | Tramor, Inc. | Reversing automatic feed wheel assembly for wood chipper |
US7007874B1 (en) | 2002-01-08 | 2006-03-07 | Leward Nile Smith | Shroud assembly for waste processing machine |
US6804871B1 (en) | 2002-05-03 | 2004-10-19 | Leward Nile Smith | Method for aligning clutch assembly |
US6955310B1 (en) | 2002-05-21 | 2005-10-18 | Tramor, Inc. | Remote control assembly for wood chipper |
US20040104798A1 (en) * | 2002-11-26 | 2004-06-03 | Ambient Corporation | Arrangement of an inductive coupler for power line communications |
US7163166B1 (en) | 2004-03-31 | 2007-01-16 | Leward Nile Smith | Rotatable assembly for machines |
US9566584B2 (en) | 2004-08-11 | 2017-02-14 | Genesis Iii, Inc. | Hammer |
US20110042498A1 (en) * | 2004-08-11 | 2011-02-24 | Young Roger T | Hammer |
US8033490B1 (en) | 2004-08-11 | 2011-10-11 | Genesis Iii, Inc. | 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 |
US20120256029A1 (en) * | 2004-08-11 | 2012-10-11 | Jonathan Paul | Hammer |
US10201814B1 (en) | 2004-08-11 | 2019-02-12 | Genesis Iii, Inc. | Hammer |
US8708263B2 (en) | 2004-08-11 | 2014-04-29 | Roger T. Young | Hammer |
US9737894B1 (en) | 2004-08-11 | 2017-08-22 | Genesis Iii, Inc. | Hammer |
US8960581B1 (en) | 2004-08-11 | 2015-02-24 | Genesis Iii, Inc. | Hammer |
US8109303B1 (en) | 2006-04-27 | 2012-02-07 | Tramor, Inc. | Stump grinder having an automatic depth control system |
DE102007000835A1 (en) * | 2007-10-09 | 2009-04-16 | Hazemag & Epr Gmbh | Breaking tool for a breaking device |
US11759789B1 (en) | 2009-05-22 | 2023-09-19 | 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 |
US8998120B1 (en) | 2009-05-22 | 2015-04-07 | Genesis Iii, Inc. | Curved hammer |
EP2707139A4 (en) * | 2011-05-12 | 2015-09-30 | Genesis Iii Inc | Hammer |
CN103717310A (en) * | 2011-05-12 | 2014-04-09 | 吉妮西丝三股份有限公司 | Hammer |
US10166696B2 (en) | 2011-07-21 | 2019-01-01 | Bandit Industries, Inc. | Safety device, backflow reduction device, conformable wood processing device, and methods thereof for a waste processing system |
US11396021B2 (en) | 2011-08-03 | 2022-07-26 | Genesis Iii, Inc. | Multi-connector hammer |
US10486159B2 (en) | 2011-08-03 | 2019-11-26 | Genesis Iii, Inc. | Multi-connector hammer |
US9358546B1 (en) | 2011-08-03 | 2016-06-07 | Genesis Iii, Inc. | Multi-connector hammer and protective arm |
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 |
US10413908B2 (en) | 2016-04-07 | 2019-09-17 | Jacobs Corporation | Hammer mill hammer with non-circular rod hole in inner bearing race |
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 |
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 |
USD839934S1 (en) | 2017-12-06 | 2019-02-05 | Roger Young | Swing hammer |
USD861048S1 (en) | 2017-12-06 | 2019-09-24 | Roger Young | Swing hammer |
USD857066S1 (en) | 2017-12-06 | 2019-08-20 | Roger Young | Swing hammer |
USD840447S1 (en) | 2017-12-06 | 2019-02-12 | 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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