US88454A - Improvement in making nails - Google Patents

Description

tzend? @time le t Letters Patent No. 88,454, dated March 30, 1869.

IMPROVEMENT IN MAKING NAILS.

The Schedule, referred to in these Letters Patent and making part of the same.

To all whom it may conce/ra:

Be it known that I, J. MAsLIN Ooorneyfof Philadelphia, Pennsylvania, have invented an Improved Nail; and I do hereby declare the following to be a full, clear, and exact description of the same.

My invention consists in the making. of cut-nails, with the sides all parallel, and the points bevelled from the rolledl sides, bycutting the nails from a plate bev elled at one' edge, to correspond to the bevel of the points ofthe nails, so that no turning of the plate, in feeding it to the machine, is required, and so that the nails produced may be superior to ordinary cut-nails, as. regards easy penetration and permanency of retention in place.

In order to enable others skilled in the art to make and apply my invention, I will now proceed to describe its construction and operation, reference being had to the accompanying drawing, which forms apart of this speciiication, and in which- Figure l' is a perspective view of my improved nail.

Figure 2, also a perspective view, showing the position of the nail in respect to the grain of the wood, prior to driving.

Figure 3 is a view of the cut side ofthe nail;

Figure 4, a view of the rolled side; and

Figure 5, a modification.

The rolled sides 'ol' an'ordinary cnt-nail are parallel, while its cut sides are inclined, so as to render the nail Wedge-shaped, and tapering toward the point, which taper, while it acilitatesthe introduction of the point in driving the nail, causes the resistance-to constantly l increase as the nail penetrates the wood.`

Another objection to this form of nail is, that in orderl to taper its sides, the plates, when fed to the machine, must be turned for each nail, so as to present opposite faces alternately to the action of the shears.

This renders the feeding of the machine, if performed by hand, laborious, and comparatively slow, while, if machinery be employed, it must necessarily, owing to the variety of motions demanded, be of a most complicated character.

My improved nail (plainly illustrated in tig. 1) has its cut sides c parallel to each other, and its rolled sides b,which are also parallel, are bevelled at the end, and thcrebyreduced to the chisel-shape shown.

The mode of making Jthis nail is as follows:

The plates are tir'st, previous to being fed to the nail-machine, passed between beve-lied rolls, which ineline them upon both sides of one edge, at a proper angle to give the desired chisel-shaped point to the nails.

After being thus bevelled, the plates are fed to the machine straight, and without turning, between the successive clips, and, consequently, the cut sides of the nail being parallelto each other, the head, and that portion of the nail adjacent to it, are` formed in the ordinary manner and by the usual machinery.

The manner of adjust-ing the nail for drivingis the reverse of that resorted to with ordinary nails, the cut sides being placed parallel with the grain of the wood, and the rolled sides across it; the wedge-shaped point, consequently, penetrates into the wood across its grain, and has no tendency to split. (See o'. 2.)

After-.the point has penetrated, the nail can be driven home with comparative ease, as there are no tapering sides to increase the resist-ance as the nail enters the wood.

; The ordinary nail, when driven home, and accidentally` started from its place, has, by reason of its ta pering sides, a constantly-increasing tendency to draw out or become loose; while my improved nail, even if started, will still hold, as all its sides are straight and parallel.

Another advantage of my nail is the facility of its manufacture, for, as it is unnecessary to turn the plates in feeding them to the nail-machine, the operation, if performed by hand, will be much more' rapid and less laborious than the old method, while it will be evident., as the drawing back and-turning ofthe plate are dispensed with, that machinery of a most simple character can be adapted to the work.

In the modiiication of my invention, shown in fig. 5, the point of the nail is formed, as will be readily understood, by bevelliini the edge of the plate upon one side only, instead of Both.

I clailn as my invention, and desire to secure by Letters Patent p As an improved method of making improved cntnails, cutting the same of equal breadth from end to end, of a plate of equal thickness, but of which an edge is bevelled on opposite sides, as described.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

J. MASLIN COOPER.

, lVitnesses z W. W. DOUGHERTY, VHanny SMITH.

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