WOODEN BAR BOXES.
An undoubted improvement on the box described in the last section, consists in the addition of separate moveable bars of wood, crossing the top of the hive, in parallel lines, to which the combs are to be attached. By this means any comb, on removal of the cover, can be separately extracted, adhering to its own particular bar. The bar-system, as we may call it, has had many advocates, but to none are we more indebted than to Dr. Bevan and Mr. Golding, for reducing to fixed rules what had previously been undefined and uncertain. The latter, however, appears to have a preference for straw hives, and has given instructions for adapting bars to them. We shall hereafter describe a hive of this kind, but varying in some respects from Mr. Golding’s. With Dr. Bevan, many prefer boxes; and a square form is better than any other, as in these every bar has the advantage of being alike, fitting anywhere, either in the same or another box. At all events, “whatever the construction of the hive,” says Mr. Golding, “without some such facility as bars, whereby every comb can be made individually available, there is something wanted, something wrong.” With no claim, therefore, to the invention of any new principle, the boxes I have constructed are modifications of those that preceded them; the object in view being to render these, at a small extra cost, more manageable to the amateur. In short, I know of no hive more completely under control.
I may premise that the boxes (as illustrated in a former edition), following those described by Dr. Bevan, were adapted for the reception of seven bars. Subsequent experience has shown that these may be advantageously increased to eight in number, extending the square of the hive, but diminishing its height. In thickness the wood ought not to be less than a full inch. The dimensions withinside are thirteen and a quarter inches square; the height being seven inches, inclusive of the bars. As regards windows, there may be one at the back and at the side, four inches high by seven or eight inches long; with sliding shutters, like those described in the preceding section. The glass ought to be so fixed as to leave as little recess as possible withinside the box, otherwise the extraction of the combs is impeded. Indeed, it is better to have the panes introduced flush, and cemented from the inner side into a fine rabbet. The best kind of cement for this purpose is a mixture of powdered chalk and glue. The bars must be one and an eighth inch wide, and half an inch thick; being best unplaned on the under side, to enable the combs to adhere to them. Recesses of a full eighth of an inch are cut from the upper inner edge of the box, to receive the ends of the bars, into which they should fall easily, ranged from front to back. It is essential to follow the rules laid down by Dr. Bevan, who says, “if the distances of the bars from each other be nicely adjusted, there will be interspaces between them of about half an inch. The precise width of the bars should be attended to, and also their distances from each other, as any deviation in this respect would throw the combs wrong. It is better to be somewhat within the rule than to exceed it by ever so little, for the tendency is generally to make the combs approximate. This has induced me to vary a little the relative distances of the bars, the three (four) centre ones being placed only seven sixteenths of an inch from each other, whilst the rest gradually recede from that distance.” For the purpose of ensuring the needful uniformity and correctness of workmanship requisite in all points, I constructed a pattern gauge, as seen in the annexed engraving. It is made of sheet metal, brass being the best, of the same dimensions as the interior square of the boxes, exclusive of the end projections. These latter denote the exact interspaces between the bars; so that if the gauge is placed upon the inner edge of the box, the position of the recesses into which the bars are intended to fall may be indicated at each end. Moreover, the gauge gives a correct pattern for making the bars, as also the position of the holes through the crown and centre boards.
It may be well here to allude to what some have thought to be an improvement in the construction of the bars, the object being to render the combs more accessible, and the usual cutting, to detach them from the sides of the hive, avoided. A reference to the accompanying engraving will exhibit a bar with a frame suspended beneath it, but so made as not to touch either the sides or bottom of the hive, and within which the combs are, or ought to be, wrought. Doubtless, advantages may arise from the facilities thus given for removal, provided these are not counterbalanced by the evil of greater complication, and the inconvenience arising from the possible attachment by the bees of the frame itself to the sides of the hive, and so setting them fast. Moreover, as such frames curtail space in the hive, allowance is necessary in its external dimensions.
A cover or crown board, three quarters of an inch thick, clamped at the ends, and projecting all round nearly half an inch, is fixed down, flush with the bars, with two or three long screws. To prevent rusting, these may be of brass.