US731896A - Nail, spike, &c. - Google Patents

Description

No. 731,896. PATENTED JUNE 23, 1903.

- 0. HASS.

NAIL, SPIKE, 8w. APPLIOATION FILED mm. 24, 1902.

170 MODEL.

Patented June 23, 1903.

CAESAR HASS, OF LONDON, ENGLAND.

NAIL, SPIKE, 84.0.

SPECIFICATION forming part of Letters Patent N 0. 731,896, dated June 23,1903.

Application filed March 24,1902 Serial No. 99,729; (No model.)

To all whom it maly concern:

Be it known that I, CAESAR HASS, a citizen of the United States of America, residing at 11 Dod street, Limehouse, London, England, have invented certain new and useful Improvementsin Nails, Spikes, and other Driven I-Ioldfast Devices, of which the following is a specification.

The object of this invention is 'an improved construction of nails, spikes, and other driven holdfast devices, and is specially applicable to that class of nail known as a wire or French nail.

In the manufacture of many wooden articles the nails have to be driven in close to the edge of the wood, and as they are atpresent constructed splitting of the wood is a constant occurrence, because the nail has to find its way between the grain of the wood instead of cutting its way through. Now by my invention I obviate this splitting of the wood by making the wire nail with three, four, or more grooves running from the stem to a point constituting the point of the nail,

the grooves being of such a character that three, four, or more cutting edges are formed of concave formation running from the central point to the outsideof the nail. Thus I have a nail with a centralpoint which first nail when driven home without fear of split 35 enters the wood, when the concave chisel or cutting edges take upthe work and cut into the wood, cause the fibers to be pressed into the body of the wood, and form a grip to the ting. The outside edges of the concave cutting edge may be swaged slightly wider than the diameter of the nail.

The annexed drawings clearly show several ways of carrying my invention into effect.

Figure 1 is an elevation of a portion of a wire nail having four cutting edges and grooves and one long central point. Fig. 2

is a section on the line a a of Fig. 1. Fig. 3 I is a plan of Fig. l, and Fig. 4 is a part-sec- 45 i 1, through the line b b of Fig. 3.

tional elevation-of a portion of a nailshown Fig. 5 is an elevation of a portion of a nail of the construction shown in the previous figures, but with thecutting edges swaged out slightly, so that the outer ends'of the cutting edges d d of Fig. .9. three-grooved nail, but showing the grooves,

are of a slightly-larger diameter than the body of the nail. Fig. 6 is an elevation of a complete nail. Fig. 7 is an elevation of a portion of a nail having three cutting edges and grooves and a short point. Fig. Sis a sectionon line a c of Fig. 7. Fig. 9 is a plan, and Fig. 10 a part-sectional elevation of a portion of the nail shown in Fig. 7 on the line Fig. 11 is an elevation of a the ends of the cutting edge being swaged slightly, so that they take a diameter slightly larger than the body of the nail.

According to Figs. 1 to 6 the grooves l are substantially concaved and cut from the body of the nail 2 to a point adjacent to the end of the central point 3, and the point 3 is of a long character; but at Figs. 7 to 11 the grooves are out on the curve from the body,

of the nail 2 to the central point 3, which is of a short character. The concaved grooves 1 on the end of the nail are in continuity-that is to say, each groove merges into the otheror, in other words, the end of the nail is cut away to form an endless succession of concaved grooves. As before explained, the cut ting edges 4 formed by the grooving are of concave form, the degree of curve being determined by the size, and such cutting edges may be of a sharp or blunt character, according to the quality of themetal employed for V the nail. If the quality be of a hard character, the cutting edges may be fairly sharp; but if of a soft character the cutting edges may be somewhat blunt, so that in using the nail for hard or knotted wood the cutting edges will not be destroyed.

In the use of the nail for wood the sharp central point is simply stuck by the carpenter into the wood, and it will hold itself there in position for being driven home by the hammer without the necessity of the nail being held by the carpenter during the striking operation with the hammer.

By slightly swaging out the ends of the 5 cutting edges, and thereby forming such ends of a larger diameter than the body of the nail, all the work of cutting through the woodis done by the cutting edges, causing the fibers of the wood which are displaced to properly and efficiently grip the stem of the nail, and thus securely holding it. in position during the entire portion of its length.

, From the foregoing it will be evident that the essential feature of the invention is the vided with concaved grooves in continuity, concaved cutting edges separating the grooves and a central sharp point.

2. A nail or the like having one end provided with grooves in continuity, cutting edges separating the grooves and an extended sharp point.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

CAESAR HA SS.

Witnesses:

RICHARD CoXE GARDNER, PERCY E. MATTooKs.

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