Conveyors: power-driven – Conveyor section – Load simultaneously engaged between and moved by a plurality...
Patent
1986-01-27
1988-06-28
Spar, Robert J.
Conveyors: power-driven
Conveyor section
Load simultaneously engaged between and moved by a plurality...
198692, 1986991, 198836, 198837, 144245A, 834352, B65G 1510
Patent
active
047533382
DESCRIPTION:
BRIEF SUMMARY
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a continuation-in-part of PCT application filed May 27, 1985 and bearing application Ser. No. PCT/FI85/00046. This claim is made under Section 35 U.S.C. 365 (c), under Section 35 U.S.C. 371 and under any other Section of the U.S.C. supporting such claim.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention concerns a feeder apparatus for timber harvesters where the feed-in movement, parallel to the log, is generated with a rotating, preferably three strand roller chain which has log grabbing members such as, for example spikes, attached to the outer plates of the roller links of the outer strands. In the following, the roller chain including its grabbing members is referred to as a track.
2. Brief Description of the Background of the Invention Including Prior Art
In tracks, the loading force between the track and its bed presents a problem. Further, it is difficult to support a track in the area where the driving and turning wheels meet the bed. In this area, the cogs of the driving and turning wheels require some space, meaning that the bed cannot extend seamlessly into the turning and driving wheels. Further, in conventional tracks, the track elements tend to move to an upright position since the distance to the grabbing spike, placed perpendicularly to the direction the track is pulled, on top of the pulling link and the track element, is considerable as compared to the space between the joints of the track element. When the chain is pulled, a moment is created which tends to force the front edge of the track element up and the rear section of the element down. Simultaneously, the loading force to which the track and the bed are subjected becomes localized.
SUMMARY OF THE INVENTION
1. Purposes of the Invention
It is an object of the present invention to provide a light-weight compact feeder apparatus which solves the problem of the loading force between the track and its bed.
It is another object of the present invention to provide a feeder apparatus where the bed of the track can extend seamlessly into the turning and driving wheels.
It is a further object of the present invention to provide a feeder apparatus where the tendency of the track elements to move to an upright position is eliminated.
These and other objects and advantages of the present invention will become evident from the description which follows.
2. Brief Description of the Invention
The present invention provides a feeder apparatus for pulling logs into a timber harvester. The feeder apparatus includes a case with two attached outer side walls supporting a first shaft and a second shaft, a drive means attached to the first shaft, a cog wheel coaxially positioned on the first shaft, a turning wheel positioned on the second shaft and a three strand roller chain. The three strand roller chain has a middle strand of roller links and two outer strands of roller links with outer link plates and rotates around the turning wheel and the cog wheel with the cog wheel driving the center strand of roller links. Log grabbing members are attached to the outer plates of the two outer strands of roller links. A rolling bed is provided for supporting the center strand of roller links, and outer rolling beds are provided for supporting the two outer strands of roller links for essentially their total grab length.
The outer rolling beds can be fitted to support the rollers of the outer strands of roller links in the area of the cog wheel for the total length of the roller chain's turn.
A narrow turning wheel can be disposed overlapping the outer rolling beds on each outer side of the outer rolling beds at the end of the chain's travel opposite to the end where the cog wheel is disposed for supporting the rollers of each of the outer strands of roller links.
The roller links of the roller chain can be assembled such that the pin piercing the front section of each roller link also pierces a rear section of the adjacent roller link.
The turning wheels can run essentia
REFERENCES:
patent: 1533353 (1925-04-01), Smith
patent: 1580842 (1926-04-01), Mattison
patent: 1746697 (1930-02-01), Eaglesfield
patent: 1842419 (1932-01-01), Morris
patent: 1878423 (1932-09-01), Nowlin
patent: 2593324 (1952-04-01), Mann
patent: 3545597 (1970-12-01), Resener
patent: 4167999 (1979-09-01), Haggerty
patent: 4615343 (1986-10-01), Komossa
Kasper Horst M.
Kimms Lyle K.
Spar Robert J.
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