I too am looking for a blade for a Landis Model 30 blade primarily as a spare. If you become aware of a company carrying such a thing by any brand please let me know.
LANDIS MODEL 30 LEATHER SPLITTER OPERATING INSTRUCTIONS - SET UP & MAINTENANCE
Anyone familiar with the correct setting of the Landis Model 30 machines should experience few difficulties setting or aligning different makes/models stationary knife Splitters. Most other makes and models use an entirely different knife edge (sharpening) angle, and the specific knife edge (sharpening) angle for each machine make, has to be maintained.
OILING
Before using a Splitter all the bearings should be oiled and, in addition, some oil may be brushed on the teeth of the Splitter gears as proper lubrication is very important and necessary to prevent undue wear of moving parts. The various parts for oil to apply has been indicated on the oil chart. Note there are four bearing blocks, two at the left side of the frame and two at the right side. These bearing blocks support the top and bottom rolls. On the left side blocks you will find holes for oiling at the top of the block close to the edge. The oil holes on the right side bearing blocks are also at the top of the blocks and close to the body of the roll and these oil holes are reached from the inside of the frame. In addition, you will find four oil holes at the right side of the frame, three of them in the lower roll pivot plate, reference #33, and one in the end of the stud which journals the intermediate driving gear, reference #56. The oil holes in the pivot plate are, one at the pivot stud, two at the bearing of the hand crank shaft and the other at the bearing for the lower roll extension shaft.
GAUGING THICKNESS OF WORK
On the front of the Splitter you will note the Gauge Plate, ref. #6, which is graduated from 0 to 15. These graduation marks indicate the thickness of the work in irons that will be produced when feeding the Leather through the Splitter.
IN LEATHER THICKNESS MEASUREMENTS THERE ARE 48 IRONS PER INCH
Since 15 iron equal 5/16 inch thickness, being the heaviest work that can be handled on a model 30 Splitter. The upper roll of the Splitter is adjusted for various thicknesses of work by moving the adjusting bar operating lever, ref. #14, to the thickness required. This lever has an indicator pin which points to the gauge scale and a plunger, ref. #15, which engages a ratchet plate to hold the lever in set position. To move the lever the adjusting bar indicator plunger is first pulled out so as to disengage the ratchet teeth.
i don’t believe I can copy the rest to you in this style but if you are interested I could PDF it and send email. I found this article who knows where & copied it so am unable to advise how to find its original location.