US763639A - Grate for pulverizing-machines. - Google Patents

Grate for pulverizing-machines. Download PDF

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Publication number
US763639A
US763639A US15231203A US1903152312A US763639A US 763639 A US763639 A US 763639A US 15231203 A US15231203 A US 15231203A US 1903152312 A US1903152312 A US 1903152312A US 763639 A US763639 A US 763639A
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Prior art keywords
grate
pulverizing
machines
sides
center
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Expired - Lifetime
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US15231203A
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August Schoellhorn
Herman S Albrecht
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PayPal Inc
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Priority to US15231203A priority Critical patent/US763639A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26Details
    • B02C13/282Shape or inner surface of mill-housings
    • B02C13/284Built-in screens

Description

UNITED STATES Patented June as, 1904.

PATENT O FICE.

AUGUST SCHOELLHORN AND HERMAN S. ALBRECHT, OF ST. LOUIS,

V MISSOURI.

GRATE FOR PULVE'RIZING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 763,639, dated June 28, I904.

Application tiled April 13, 1903. Serial 110,152,312. (Nomodell) To all whom it may concern:

Be it known that we, AUGUST SoHoELLI-IoR and HERMAN S. ALBRECHT, citizens of the United States, residing in the city of St.Louis, in the State of Missouri, have invented. certain new and useful Improvements in Grates for Pulverizing-Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

This invention relates to pulverizing-machines.

In pulverizing-machines for clay and the like the material works from the center toward the sides of the casing, and consequently is not caught by the hammers. Further, some of the material becomes caked in the corners between the sides of the casing and the unperforated edges of the grates; and it' is the object of our invention to provide means for eliminating both of these disadvantages.

In the drawings forming part of this specification, Figure l is a perspective view showing a section of the grate forming a part of our machine and part of another section in dotted lines. Fig. 2 is a vertical transverse section of the grate. Fig. 3 is a detail vertical transverse section of our pulveriZing-machine.

Referring more particularly to the drawings, 1 designates one of the sections of the grate, of which there may be any desired number. Each section is composed of a rectangular casting having two rows of diagonal slots 2, which on eachside of the center of the grate are inclined forwardly from the adjacent edge toward the center, whereby the material when it strikes the slots (due to the movement of the rotary heater) is carried to the center of the grate instead of to the sides between the sides of the casing and the sides of the grate and between the bottom of the grate and the groove, band, or other support upon which the grate rests.

Having thus described our invention, what we claim is- The combination of a grate formed with slots inclined from each side toward the middle in the direction of travel of the material, and a revolving beater mounted above the grate.

AUGUST SCHOELLHORN. .HERMAN S. ALBRECHT. In presence of p NELLIE V. ALEXANDER,

E. S. KNIGHT.

US15231203A 1903-04-13 1903-04-13 Grate for pulverizing-machines. Expired - Lifetime US763639A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3617007A (en) * 1969-10-03 1971-11-02 Joseph F Bonarrigo Jr Grate bar assembly for a rock crusher
USRE28368E (en) * 1969-10-03 1975-03-18 Grate bar assembly for a rock crusher
US4061277A (en) * 1976-09-20 1977-12-06 Sivyer Steel Corporation Shredder with grate cartridge
CN102836757A (en) * 2012-09-18 2012-12-26 江苏牧羊集团有限公司 Screening piece for hammer grinder
US20130161427A1 (en) * 2010-09-02 2013-06-27 Vermeer Manufacturing Company Apparatus for comminuting fibrous materials
US9707565B2 (en) 2014-04-09 2017-07-18 II Lyman Burdette Lyne Screen assembly for shredding machine
US10682649B2 (en) 2013-04-09 2020-06-16 Esco Group Llc Discharge grates for reduction mills
US10710092B2 (en) 2014-07-14 2020-07-14 Esco Group Llc Discharge grates for reduction mills

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3617007A (en) * 1969-10-03 1971-11-02 Joseph F Bonarrigo Jr Grate bar assembly for a rock crusher
USRE28368E (en) * 1969-10-03 1975-03-18 Grate bar assembly for a rock crusher
US4061277A (en) * 1976-09-20 1977-12-06 Sivyer Steel Corporation Shredder with grate cartridge
US20130161427A1 (en) * 2010-09-02 2013-06-27 Vermeer Manufacturing Company Apparatus for comminuting fibrous materials
US9186683B2 (en) * 2010-09-02 2015-11-17 Vermeer Manufacturing Company Apparatus for comminuting fibrous materials
CN102836757A (en) * 2012-09-18 2012-12-26 江苏牧羊集团有限公司 Screening piece for hammer grinder
US10682649B2 (en) 2013-04-09 2020-06-16 Esco Group Llc Discharge grates for reduction mills
US9707565B2 (en) 2014-04-09 2017-07-18 II Lyman Burdette Lyne Screen assembly for shredding machine
US10710092B2 (en) 2014-07-14 2020-07-14 Esco Group Llc Discharge grates for reduction mills

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