US1320437A - norway - Google Patents

Description

A. A. ALFSEN.

BARKING DRUM.

APPLICATION FILED MAY 16. um.

Patented Nov. 4, 1919.

Iii en 2:07-

1311mm ey.

ADOLF AUGUST ALFSEN, 0F AADALEN, NEAR HEEN, NORWAY, ASSIGNOR TO A /S. MYRENS VERKSTED, OF CHRISTIANIA, NORWAY.

BARKING-DRUM.

Specification of Letters Patent.

Patented Nov. 4, 1919.

Application filed May 16, 1917. Serial No. 169,095.

To all whom it may concern:

Be it lmown that I, ADOLF AUGUST A121 SEN, a subject of the King of Norway, residing at Aadalen, near Heen, in the Kingdom of Norway, have invented certain new and useful Improvements in Barking- Drums; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to makeand use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

Up to the present time barking-drums have generally been manufactured with both ends open, the wood passing continuously in through one end of the drum and out through the opposite end. Barking-drums with closed ends have also been used, which drums have been worked in an interrupted process, the lumber or wood being fed in and out through a suitable charging opening on one side of the drum.

None of these arrangements are suitable for barking Wood or lumber of considerable length. In the barking process as applied on such lumber drums 'of approximately the same length as the lumber are utilized, and it is therefore not possible to let the lumber pass continuously through the drums.

On the other hand the charging and discharging of the drums through charging openings at the side of the drums takes too much time.

According to the present invention the barking of lumber takes lace in long drums, open at both ends and mounted in chains or rollers, the longitudinal movement of the ltunber being prevented through the rotation of the barking-drum by means of pivoted walls or end covers, located at both ends of the drum and independent of the same.

By arranging the said. walls or covers pivotally on horizontal hinges, they may easily and quickly be removed from the end opening of the drum, whereby the lumber may be put in and out of the same.

On the drawing are shown two forms of the invention.

Figure 1 is a longitudinal section of a barking-drum and Fig. 2 is an end view of the same.

Fig. 8 is a slightly modified form of the invention.

Referring to Figs. 1 and 2, 1 is the bark ing-drum and 2 is the trough in which the drum rotates. At each end of the drum the trough is provided with a wall 3. Said walls are not required to extend right up to the upper side of the drum, as the drum will never be completely filled with lumber. The walls are pivotally connected by means of hinges 4E with the bottom or end pieces of the trough and are maintained in upright position by means of columns 5, to which they are fastened by means of bolts 6.

The form of the invention illustrated on Fig. 3 differs from the above specified form thereby that the drum is combined with means for charging the same with lumber. Said means consists in an endless chain 7, the lower part of which runs through the drum slightly below the upper side of the same, guiding disks 8 preventing the chain from engaging the drum, while the chain is tightened by means of tightening roller 9. The lumber is fed into the drum by means of a chain 10 inclosing the lumber and being fastened to the chain 7 as illustrated on the drawing.

In order to perform the feeding of the lumber into the drum without difficulty, the lumber is placed on a floor 11 a little higher than the level of the water in the trough. From this floor 11 a slope 12 leads to the foot of the trough, and against this slope the walls 3 are rested during the feeding of the lumber in and out of the drum.

I claim:

1. In a machine for barking lumber, a rotating open-ended barking drum, a water tank in which the lower part of said drum rotates, movable end partitions cooperating with each end of saiddrum and adapted to prevent logs working out of the same, a charging floor arranged adjacent one end of said drum and above the lower inner wall thereof to facilitate the feeding of relatively long logs into said drum, an elevated delivery floor adjacent the other end of said drum, inclined runways between said floors and the ends of said drum and an endless feed chain having one run extending through the upper part of said drum.

2. In a machine for barking lumber, a rotating open-ended barking drum, a water tank in which the lower part of said drum rotates, adjustable means cooperating with each end of said drum and adapted to prevent logs working out of the same, and a flexible feed device extending through the upper part of said drum.

3. In a machine for barking lumber in a continuous process a rotating barking-drum open at both ends, walls independent of the said barking-drum covering both ends of the same up to a certain height, one or more of said walls being provided with means, such as hinges, for removing the same from the position in which it covers the end opening of the drum, and means comprising an endless chain the lower part of said chain running through the upper part of the drum for feeding lumber into and out of said drum.

41-. In a machine for barking lumber in a continuous process a rotating barking-drum open at both ends, walls independent of the said barking-drum covering both ends of the same up to a certain height, one or more of said walls being provided with means, such as hinges, for removing the same from the position in which it covers the end opening of the drum and means comprising a floor on a somewhat higher level than the bottom of the drum and a slope leading from said floor toward the drum for facilitating the charging of the drum.

5. In a machine for barking lumber, a rotating open-ended barking drum, a water tank in which the lower part of said drum rotates, movable end partitions cooperating with each end of said drum and substantially closing the lower part thereof to prevent logs working out of the same and a charging floor arranged adjacent one end of said drum and above the lower inner wall thereof to facilitate the feeding of, relatively long logs into said drum.

In testimony that I claim the foregoing as my invention, I have signed my name in the presence of two subscribing witnesses.

AD OLF AUGUST ALFSEN.

"Witnesses KARL L. LEE, C. NORMAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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