D&M refined and improved the original Arthur Irwin catchers mitten dramatically in the decade 1890-1900. Below is a photo that pretty much illustrates that change.

Below is an early ad for the first improved Irwin mitten circa 1891. The "patent pad" of the ad referred to a hardened rubber belting inside at the top of the mitt and thumb. It protected the catchers fingers and kept the inner padding protected and in place. The belting was riveted to the perimeter of the mitt. As an extra precaution, heavy twine was attached inside at the rivets and sewn in through the padding. At this point there was no webbing.

The photo below shows the hardened rubber belting inside the mitt with two rivets holding it in place. The golden color twine inside was used to sew into the padding and secure it in place.

The Grommet web was also introduced in 1891 and was used to compliment the hardened rubber belting by the ability to adjust the thumb closer to the body of the mitten to strengthen the perimeter. The raised heel pad was brought out in 1894 to deepen the pocket and the laced heel introduced in 1895 for padding adjustment. It is clear that D&M had broken ties with Arthur Irwin by 1895 and stated emphatically in the ad below.

The last change to the D&M mitt in that decade was the choice of a riveted strap instead of the grommet web in securing the thumb to the body of the mitt. This permanently formed a pocket and was used many times in conjunction with a sewn palm to reinforce the pocket with a double layer of leather. The designers were clever in bringing the ends of the sewn palm through the cleft of the mitt and riveting it in place.


The original hook and eyelets are still intact as is the heel lacing.


D&M experimented further with the webbing as the patent drawing below from 1908 illustrates. Hugo Goldsmith was the inventor and D&M used this design for a few years on some of their top mitts.


Note the dedicated grommets on the perimeter band used for lacing an adjustable web. This was more or less a transitional design bridging the old D&M grommet web and the modern technique of incorporating a web through the perimeter lacing.
