US1672300A

US1672300A - Barking drum

Info

Publication number: US1672300A
Application number: US220459A
Authority: US
Inventors: Branch Burl
Original assignee: Individual
Current assignee: Individual
Priority date: 1927-03-24
Filing date: 1927-09-19
Publication date: 1928-06-05
Anticipated expiration: 1945-06-05

Description

June 5, 1928. 1,672,300

B. BRANCH BARKING DRUM Filed Sept. 19, 1927 Ji (4 1s Patented une 5, 192a v UNITED STATES PATENT OFFICE.

nun:- men, or rename, ONTARIO, CANADA. :aAnxnte manic.

Applipation fled September 19, 1927, Serial No. 830,459, and in Canada Iarch 24, 1987.

This invention relates to barker drums for removing the bark from logs which are to be made up into paper pulp. Heretofore these drums have been constructedof bars and rings secured together by means of rivets and bolts having their axes directed radially of the drum and having their heads located within the interior of the drum, and my object is to provide a drum of simple construction that will overcome the above objectionable features.

I attain my object by provldmg mwardl directed lugs on rings by means of whici the drum is carried so that it may be rotated. The rings are connected by means of longitudinal channel bars which are mounted between adjacent lugs on the rings. The flanges of the channel barsare directed outwardly and a rivet or bolt is passed through each lug and the flanges of ad acent bars in contact therewith. The constructions are hereinafter more fully described and are llustrated in the accompanying drawings in which:

Fig. 1 is a side elevation of a portion of an end section of my drum;

Fig. 2 a cross sectional detail of the drum; Fig. 3 a view similar to Fig. 2 on a larger scale showing the means for secunng the bars to the rin and v Fig. 4 a longitudinal sectional deta11 of the drum showing the binding ring and dr1v1ng gear connected thereto in cross section.

In the drawings like letters of reference 86 indicate corresponding parts in the different figures.

The drum includes a plurallty of rm? A and a plurality of longitudinal channel ars B wh1ch define the circumference of the 40 drum. The rings are provided with radial lugs C which are directed inwardly between adjacent bars to space them from one another. The flanges b and b of the channel bars are directed outwardly and are adapted to be received snugly between adjacent lugs C to form a number of continuous bands of metal therewith around the drum. Rivets D passed through the lugs and through the flanges b and b of the adjacent channel bars in contact with each lug secure the bars to the lugs. The axes of the rivets are directed substantially circumferentially of the drum and substantially at right angles to the axis thereof. The outer ends of the flanges b and b engage shoulders 0' formed on the lugs C. From the above description it is obvious the rivets.

that the rivets D merely hold the bars B in position on the lugs C and that any stresses, caused by the logs striking the bars, are borne by the shoulders or the lugs. In other words the hereinbefore described arrangement for securing the bars to the rings substantially eliminates any shearing stress on Further the rivets are so located that they cannot be struck by the logs tumbling around within the drum and therefore {.hey will not be damaged nor loosened by the ogs.

The spaces E between the longitudinal bars form slots through which the detached pieces of bark may discharge from the drum into the tank or the like (not shown) wherein the drum is mounted. The drum is suitably supported for rotation by rollers or pulleys (not shown) which engage the ripheries of the rings A and is suite 1 driven by means of a pinion (not shownj meshed with a gear G secured by studs H to the side of one of the rings A.

Any number of rings A may be used in accordance with the length of the drum and the bars intermediate the rings may be connected in spaced relationshi with one another by means of blocks fitted in the spaces The blocks are connected by rlvets J to adjacent flanges b and b, the rivets J bein arranged in the same manner as the rivets It will be distinctly understood that the term rings used throughout the claims is intended to include any members for supporting the longitudinal bars of abarker and filial; the term rivets includes bolts and the e. What I claim is:

1. A barking drum comprising rings connected by longitudinal bars, the rings being provided with lugs directed between adjacent bars.

2. A barking drum comprising rings; a plurality of longitudinal bars definin the circumference of the drum, the rings eing provided with lugs directed inwardly between adjacent bars; and means for securing the bars to the lugs.

3. A barking drum comprising rings; a plurality of longitudinal bars; lugs carried by the rings; and rivets for securing the bars to the lugs, the said rivets having their axes directed substantially circumferentially of the drum and substantially at right angles to the axis thereof.

4. A barking drum comprising a series of channel bars; binding rings provided with lugs directed inwardly between adjacent bars to space them from one another; and rivets for securing the bars to the lu s, the said rivets having their axes directed substantially circumferentially of the drum and substantially at right angles to the axes thereof.

5. A barking drum comprising rings; a

lurality of longitudinal channel bars defining the circumference of the drum, the flanges of the channel bars being directed outwardly; lugs carried by the rings, the said'lugs being directed inwardly between the flanges of adjacent channel bars; and a rivet passed through each lug and the flanges adjacent thereto. I 6. A barking drum comprising rin s; a plurality of longitudinal channel bars efiiiing the circumference of the drum; lugs directed inwardly from the rings, the lu s being spaced from one another to receive a channel bar between adjacent lugs; shoulders formed on the lugs for limiting the outward-movement of the channel bars; and

rivets for securing the channel bars to the lugs.

. A barking drum comprising rings connected by longitudinal bars, the rings being provided with lugs directed between adjacent bars to space them from one another; and blocks interposed between adjacent bars intermediate theends thereof.

8. A barking drum comprising a series of channel bars; binding rings provided with lugs directed inwardly between adjacent bars to space them from one another; rivets BURL BRANCH.