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1858 Article - Jay's Mortising and Boring Machine |
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10/22/2003 11:19:05 PM |
Here is the complete article text:
JAY's MORTISING AND BORING MACHINE
The number of machines which will perform many operations, and combine within the limits of a compact frame, apliances which render them useful for a multitude of purposes, are daily becoming more numerous. Amongst the most prominent of these is the machine we are about to describe, which is the invention of J. M. Jay, of Canton, Ohio, and was patented by him July 28, 1857.
Of our engravings we will describe first the perspective view, Fig. 1. A are four legs bound together in a frame, and having hinged to them links, a, which are again hinged to the legs, A', of a supplemental frame. To B are secured cross slides, C, one of them having two small sliding stops, c, upon it. In these slides there moves the frame, D, carrying a frame, E, provided with a cogged arc, F, so that it can be set at any angle by the rod and worm wheel, f. G is an upright stand for holding stuff, and being provided with two spring-fastened angular catches, g, and so arranged that it can be placed at any angle by means of the sliding bar and screw, H. There is a small stop screw which regulates the depth of the mortise, seen at h, and operated by the milled head, i. The frame, B, can slide to and from the tool on A', and it is generally held back by two spiral springs, not shown in the engraving.
I is a band wheel on a shaft, J, that receives the power, and gives motion to K placed in a vertical frame, L; this frame, L, also carrying a shaft, M, that has two bevel wheels, m m, upon it, by turning which, the screws, N, are rotated, and the frame, A', raised or lowered to the tool. 0 is a lever, having a band, P, attached to it, the other end of which is connected with the back of B, so that by depressing 0, the frame and contained stuff is brought against the tool. Q is a hand, which passes over one tool arbor that has a wheel, R, on one end, so that the machine can be driven by hand, and a tool, 5, in a recess in its other end. The belt, Q, communicates with K, and derives its motion from it. T is a tool in an arbor below, that is operated by Q and also rotated by it. This lower arbor is placed in a sliding frame, U, so that it can be lifted up or down, and adjusted in the most desirable position. The stuff to be mortised is placed on the frame, E, at any desired angle, and by means of a pin in D, catching against the stops, c, the length of the mortise is determined. The two notched plates, g, are used in boring round stuff, and in fastening a chair pillar, when you wish to mortise one; the extra arbor cuts tenons of any thickness, by simply raising or lowering it.
Fig. 6 is a hollow auger for cutting round tenons. Fig. 4 is a tool for turning chair backs, and Fig. 5 smoothens or cuts any stuff. There is an almost endless variety to the tools that can be employed in this machine, for the various purposes to which it can be applied. For the purpose of turning carriage hubs, tIme frame, D, has to be removed, and the face plates, W, (of which Fig. 2 is a front, and Fig. 3 a side view,) on the pieces, V, put in its place. These face plates are each composed of two pieces, W and W'; W having three slots, direct from the center to the edge, and straight, and W' having spiral slots, from the center to the edge; in these slots work slides or catches, w, so that by turning W' they will firmly grasp the hub, and a spring catch, X, fitting into the holes on the rim of the face plates, holds it secure while being shaped. Z is the spring of one of these catches, part of V being broken away.
This is a most convenient and compact machine. Any more information concerning it can be obtained by addressing the inventor as above. |
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