Abstract: A hoist for roll material surface treatment composes of a lift platform means, a securing means, a hoist means and a transmission means. There are two pairs of spaced bars in the hoist means engagable with two pairs of spaced V-shape blocks in the securing mean allowing the hoist means to load or discharge a roll material supported by the lift platform means. There are rotary shafts in the hoist means for suspending the roll material through the central opening thereof The roll material is compressed between layers at the upper portion and stretched to form loosely gap between layers at the lower portion. The roll material is hoisted and immersed in a processing tank. When rotary shaft and the roll material are driven to rotate by the transmission means, the upper portion of the roll material squeeze out the processing liquid while the lower portion allow processing liquid to sip into the gap and uniformly cover the surface of the roll material. Thus roll material can get a uniform surface treatment.

Abstract: A front-end loader includes a pair of loader arms and features a parallelogram-shaped plate assembly associated with each arm and having first and second corners respectively pivotally mounted to the forward end of a respective loader arm and to an implement carrier holder and having third and fourth corners respectively pivotally coupled to levelling and tilt linkage assemblies. A tilt cylinder is mounted between the tilt linkage assembly and the parallelogram-shaped plate assembly. The parallelogram-shaped plate assembly serves to transfer levelling linkage and tilt cylinder inputs to an implement carrier holder coupled to a mounting bracket at the rear side of a bucket.

Abstract: The invention is an improvement in a machine such as a surface mining "shovel" having an arm, a bucket-like digging dipper and a brace. The latter is used to maintain a selected "rake angle" between the arm and the dipper. The brace has first and second end lugs and extends between the arm and the dipper. The improvement comprises a tube-like collar interposed between and connecting the lugs. At least the first end lug is positionally adjustable with respect to the collar so that the "rake angle" between the arm and the dipper may be readily selected. In a highly preferred embodiment, each end lug is threaded to an opposite end of the collar and better "vernier" adjustment of the rake angle results.