US1042301A - Wire tack. - Google Patents

Description

J. A. WELCH.

WIRE TACK.

APPLICATION FILED MAY 31, 1910.

1 ,942, 30 1 Patented Oct. 22, 1912.

JAMES ALFRED WELCI-I, 0F TAUNTON, MASSACHUSETTS.

WIRE TACK.

oaasor.

Specification of Letters Patent.

Patented Oct. 22,1912.

Application filed May 31, 1910. Serial No. 564,220.

To all whom it may concern:

Be it known that 1, JAMES ALFRED WELoH, a citizen of the United States, residing at Taunton, in the county of Bristol and Commonwealth of Massachusetts, have invented a new and useful Improvement in Wire Tacks, of which the following description, together with the drawings filed therewith, forms a specification.

The object of my invention is to supply a wire tack or brad that may readily be placed in position for the blow of the driving tool by means of very slight pressure, as of the thumb or fingers of the operator, without any blow whatever of the driving tool or similar instrument, no matter how tough or hard the material to be pierced.

As heretofore made. wire tacks and brads h ave been too blunt to be readily stuck into leather, hard wood, and similar hard or tough substances, but have been liable to fall out unless tapped by the driving tool or unless unusually great pressure has been employed. This quality of easy fixation is of prime importance in industries, such as lasting, where tacks must be driven into leather or other tough or hard substances very rapidly, and a very fine, splinter-like point, such as is found on ordinary cut tacks, is necessary to give the required sharpness. I have provided such a point on my tack, by a simple change in the method of making wire tacks, brads, and nails now in use. I have further provided novel means for retaining the tack in the material after being driven, as I will set forth below.

I will now describe my tack, reference be ing made to the accompanying drawings, in which similar characters of reference indicate similar parts in all the figures.

Figure 1 shows a piece of the wire, with. head formed thereon, from which the tacks are made, the small figure at the left of same being an end view; Fig. 2 is a view of one side of a finished tack; Fig. 3 is a view at right angles to that shown in Fig. 2; Fig. 4 is a view of the opposite side of the view shown in Fig. and Fig. 5 is a view of the opposite side to that in Fig. 3.

The tack itself has the usual round shank B and head A, but has a very slender, splinter-shaped point C at its extremity, quite short. and resembling a blade protruding from its scabbard. This point is extremely sharp, and as fine as that of a needle, the wire being torn, rather than cut, off by the upper aw, which is made to take out an extra large piece of metal at the point. At the point an, at the base of the mosquito bill point C, there is a quick enlargement y, and from y the lines of the point of the tack slope, more or less regularly, to the shank B.

In Figs. 2 and 4, the lowerside b is shown as slightly raised at the extreme point, which is done by slightly curving the eiid of the groove in the lower jaw upward at its end.

In Figs. 4 and 5 may be seen ragged longitudinal projections 2', z and the channel m. The projections 2, c are formed by nicking the edge of the upper jaw, and the channel m is formed by the wire being torn away as the upper jaw passes over it, the projections slightly overhanging the channel m. The object of the projections and channel is to aiford means to hold the tack in the material, when driven, and the bending of the point is to prevent the point of the tack from taking an oblique course through the material, which it would tend to do if one side of it were vertical and the other oblique.

Having now described my invention, what I claim as new and desire to secure by Letters Patent, is

As an article of manufacture, a tack made from round wire, said wire being sheared to a point in a single plane surface diagonal to its axis, said plane surface having longitudinal. projections and a longitudinal channel, therein, as and for the purpose described.

J. ALFRED WELCH.

Witnesses:

CLARENCE J. SMERDoN, BENJAMIN L. W001).

Gop'ies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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