A chain drum for a chain conveyor, in particular a chain flight conveyor mounted on the cutting jib of a cutter-loader, consists of a split sprocket removably mounted on a non-divided drum which is connected to and rotates together with its shaft. The drum is provided with external teeth which mesh with internal teeth on both sprocket halves. Both sprocket halves are held together by locking disks which extend over shoulders on the sprocket halves, which latter are fixed to the drum by means of ...

Presented is a chain tensioner device for chain drives which, because of the environment in which the chain drives are used, must have considerable slack, while operating at high speeds, and yet remain properly engaged to the sprockets on which the chain rotates.

A safety chain for a chain saw comprising drivers connected by side link units each having a pivot fulcrum on its lower edge running in contact with the saw blade kerf bottom, the side links including a cutter tooth, a depth gauge, and a safety device for the particular cutter.

In a combination of a metal chain and a J-shaped hook, a first ring of the metal chain is connected to a J-shaped hook through a hole provided in a bottom thereof. Therefore, the J-shaped hook can rotate about the first ring at the connection hole and be changed into an approximately inverted J-character shape when hanging from the metal chain in case the chain hook is not used. Moreover, the head portion of the J-shaped hook can be in contact with and held by the first ring so as to keep an app...

A saw chain for motor-driven chain saws includes a cutting link which has three mutually adjacent supporting surfaces defining a U-shaped cutout for accommodating a hard metal insert in the form of a cutting plate therein. The support of the insert is provided at only subportions of these supporting surfaces and the remaining subportions provided an adequate spacing so that a solder gap is formed. The hard metal insert placed in this cutout has an adequate service time and does not require speci...

An endless chain of this invention for a chain saw is provided with cutter links of a unique shape and construction. Such cutter link has an inclined U-shaped and substantially consists of a saw adjusting portion and a saw tooth portion. The saw tooth portion further has a hard metal tip brazed at the top thereof, wherein the hard metal tip forms a saw set. Due to such construction, the saw tooth portion which is provided with such hard metal tip can smoothly saw off lumber while the saw adjusti...

A non-skid chain for a tire is disclosed having a link construction of welded steel wire which is sustantially polygonal in cross-section perpendicular to the longitudinal direction of the link. The link cross-section has a cylindrical surface portion with two bearing surface portions located toward the inside of the link. Adjacent chain links are adapted to contact each other only at points disposed on the bearing surface portions between the links.

The invention disclosed herein relates to a chain tightener assembly for adjusting the tension of an endless chain entrained over a pair of spaced sprockets. The chain tightener consists of a carrier rotatably supporting a pair of idler sprockets respectively engaging opposite surfaces of the chain. The carrier is moved by a fluid ram consisting of a cylinder supported on a fixed pivot axis and a piston secured to the carrier. The cylinder has a relief valve communicating with an internal chambe...

The invention relates to a roller chain for chain drives, which has a plurality of inner and outer links alternating in tandem. The inner links have at least two inner plates having pairs of pin holes and having pin bearings disposed between the pin holes. The outer links contain each at least two outer plates which are joined together by at least two pins fastened in them. For the articulation of the outer links with two adjacent inner links each, the one pin of each outer link reaches through ...

A chain saw guide blade includes a pair of side plates between which an axle is fixedly supported and a sprocket is rotatably supported with respect to the axle. The sprocket is rotatable about the axle with roller bearings therebetween for guiding a cutter chain for movement around the edge of the guide blade. A pair of annular seals are respectively disposed between the sprocket and one of the side plates and between the sprocket and the other side plate. Each of the seals includes an annular ...