US1647183A

US1647183A - Disintegrating mill

Info

Publication number: US1647183A
Application number: US171312A
Authority: US
Inventors: Leggemann Albert
Original assignee: Individual
Current assignee: Individual
Priority date: 1927-01-31
Filing date: 1927-02-26
Publication date: 1927-11-01
Anticipated expiration: 1944-11-01

Description

Nov. 1, 1927.

A. LEGGEMANN msmmemwme MILL Fileg Feb. 26, 1927 2 Shoots-Sheet. 1

n n I I l a I m l Nov. 1, 1927. 1,641,183 1 A. LEGGEMANN DISINTEGRATING M1111.

Filed Feb. 26, 1927 2 Sheets-Sheet. 2

I mentor Azberc Lg emanm Z3 r I ,Ac'ior'ney 35 f or beaters being rotated pass between the Patented Nov. 1, 1927.

, UNITED STATES I 1,647,183 PATENT-OFFICE.

ALBERT LEGGEMANN, 0F BRUNSWICK, GERMANY.

msmrnena'rmo MILL.

Application filed February 26, 1927, Serial No. 171,312, and in Germany January 31, 1927.

My invention relates to improvements in disintegrating mills, and more particularly in mills of the type inwhich one or more rotary beaters cooperate with a grate in the form of a funnel, the said beaters passing between the grate bars and acting on the material placed thereon by impact. The-object of the improvements is to provide a mill f this class which has a high efliciency and 1n which obstruction of the bottom part bythe material being disintegrated is avoided. With this object in view my invention con-' sists in providing an abutment at the bottom part of the funnel provided by the grate on which the material being disintegrated is supported, so that the heaters have a full action thereon.

For the purpose of explaining the invention an embodiment of the same has been shown in the accompanying drawing in which the same reference characters have been used in all the views to indicate corresponding parts. In said drawing,

'Fig. 1, isa vertical section'of the mill,

Fig. 2, a top plan view thereof with parts broken away for clearer disclosure, and Fig. 3 is a side view of the abutment at the bottom part of the funnel.

In the example shown in the figures my improved mill consists of two parallel sections each comprising a rotary shaft 71. haying beaters g, s mounted thereon, the said sections having a chute b disposed between the same. The side walls of the chute are formed of grate bars a, andthe hammers said grate bars and into the hopper provided thereby so as to act on the material to be disintegrated.

Referrin now more. partic'ularly to the drawing, t e mill comprises a frame provided with a transverse tapering member 22 and cross-bars o. On the said tapering member an elongated head 'w'of tempered steel is supported, and on the cross-bars 'v and the said tapering member segmental bars 7 are supported, which are connected by grate bars f and cross bars f Above each of the grates f, f a-shaft h is rotatably mounted in bearings a secured to the frame g, and the said shafts are adapted to be rotated bysuitable means such as belt gearings 9'. -At their adjacent top ends the segmental bars ,7, are supplemented by segmental, grates'a, the distance of which from the axes of the respective shafts h is less than the distance between such axes and the coacting grates f, and which are disposed so as to provide a hopper 6 adapted to have the material to be disintegrated delivered into the same. Further, each millis covered by a segmental wall n having openings 0 normally closed by lids p. To eaph of the rotary shafts k a plurality of arms I arefixed. the length of which is less than the distance of the segmental grates a from the respective shafts It. On pivot bolts r fixed to the outer ends of the said arms beaters or hammers 8 are rockingly mounted,-

which hammers are adapted to pass between the bars of the grates a.' Thus, upon rotation of the shafts k the hammers or heaters pass into the hopper b where they act on the material to be disintegrated. The die- -integrated material .falls through the grates a and on the grates f, 7' whereit is further reduced by the hammers moving across the said grates. So far the disintegrating mill is knownin the art.

In the operation of the mill the material fed into the funnel 6 tends to obstruct the bottom part of the grates, a, so that the action of the hammers or heaters s on the material is interfered with. Therefore I provide an" "a. Further, the portions e are supported on the elongated head u. Thus the anvil can be readil Jremoved in case of wear and replace with a new one. The triangular part of the anvil is spaced from the bottom part of the grates a, and in the operation of the mill it provides a rigid sup ort'for the parts of the material falling to t e bottom part of the hopper, so that the heaters or hammers s have a strong disintegrating action.

While in describing the invention refer- .ence has been made to a particular embodiment of the sametI wish it to be understood that my invention is not limited to the construction shown in the drawing, and that variouscha-nges may be made in the neral arrangement of the apparatus an the con.-

struction of its arts without departing from' the invention, t e true scope of which is indicate'd in theappended claims.

I claim:

1, A disintegrating mill, comprising a hopper for the material to be disintegrated having its bottom in the form of a grate, rotary heaters adapted to pass between the bars of the grate into said hopper, and a rigid abutment located above the bottom part of said hopper and spaced from the bottom part of said grate.

2. A disintegrating mill. comprising a pair of segmental compartments, parallel shafts rotatably mounted onein each of said compartments, heaters mounted on said shafts, a hopper above said compartments and common to both compartments, the side walls of said hopper consisting of segmental grates formed with slots located concentrically of said shafts and having a distance from said shafts such that the outer ends of said heaters are adapted when being rotated to pass between the same and into said hopper, and an elongated anvil above the bottom part of said hopper and having its side walls spaced from the bottom parts of the side walls of said hopper.

3. A distintegrating mill, comprising a pair of segmental compartments, parallel shafts rotatably mounted onein each of said compartments, heaters mounted on said shafts, a hopper above said compartments and common to both compartments, the side walls of said hopper consisting of segmental grates formed with slots located concentrically of said shafts and having a distanc from said shafts such that the outer ends 0 said heaters are adapted when being rotate to pass between the same and intosaid hop per, and an elongated wedge-shaped anvil disposed at the bottom part of said hopper and spaced from the bottom parts of the side walls thereof and formed with laterally projecting arms bearing on said side walls.

4. A disintegrating mill, comprising apair of segmental compartments, parallel shafts rotatably mounted one in each of said compartments, beaters mounted on said shafts, a hopper above said compartments and common to both compartments, the side walls of said hopper consisting of segmental grates formed with slots located concentrically of said shafts and having a distance from said shafts such that the outer ends of said heaters are adapted when being rotated to pass between the same and into said hopper, and an elongated anvil at the bottom part of said hopper and spaced with its side walls from the bottom parts of the side walls of said hopper, said anvil being removably fixed to the side walls of said hopper.

In testimony whereof I have hereunto set my hand.

ALBERT LEGGEMANN.