Here's a later Glenwood cabinet type - a #14- with what looks like geared pairs. http://www.ebay.com/itm/Glenwood-cabine ... 1c4496dc04
Note that the two outer grate bars don't have shaker handle triangular stubs, leading me to believe that all four are in gear pairs.
But, that doesn't mean much because the bar lengths and where the bars sit in a frame, or supports, could be quite different than the earlier stoves - which can differ quite a bit from other models of the same year- or, sometimes from even later versions of the same model name. Example, my 1903 Sunny Glenwood range has different length grate bars than the Sunny model of only a couple of years later.
The stove shops have a lot of different grate bars that they save for patterns to have new bars recast. And since the grates take such a beating, I think that's a better route to go then gambling on buying a used stove to see if the grate bars are better than what one already has.