September 1948 "Archery"
New Conolon Backings
"Frank eicholtz states that the new improved Conolon bow backings now being offered to bowyers, both professional and amatuer, are even better than the old type he developed several years ago. Conolon bow backings have made an enviable record in flight shooting by establishing record distances in all weights. Distances of over 600 yards with boows of 75-80 pounds are now fairly common. Yet two years ago such performances was not believed possible. The modern Conolon backed flight bow far exceeds anything achieved by the fabulous Turkish bow in approximately the same drawing weights! Based on eight months of rigid tests, the conclusion is that the new Conolon backings are unbreakable.
The new backings, for which a patent application has been filed, are simpler to apply in that their increased thickness with the bonded subback make them a rigid structural part of the bow and prevent even cross-grained wood from breaking beneath the backing. An added advantage is gained in using cross-grained wood as it is much less apt to split longitudinally in using relatively weak woods, such as yew, in Composite bows. Good grade Commercial Maple and Birch cannot be beaten as cores when plastic facings are used. These woods are readily available at lower cost and have the adantage of greater shear strength, better gluing qualities, much easier to work, and there is absolutely no loss in cast.
To use the new backings it is necessary only to sand the plastic side with coarse sandpaper to remove all glaze, and glue with any good adhesive including Cascophen, Urac 185, Penacolite, Cascamite, etc.. Accurately made forms may be cut from plywood to the desired contour of the back and the whole bow glued down to the form, using half-inch Birch strips faced with rubber or wood blanket on top [face] either clamped or wrapped with rubber. Wrapping without the 1/2 " strips would result in a concave back. The undesirability of having the edges of the back higher than the center can be readily seen."