US1751800A - Weatherproof nail - Google Patents

Description

March 25, 1930.

G. E. DI CKSON WEATHERPROOF NAIL Filed July 15, 1926 jive/27b" Patented Mar. 25 1930 T OFFICE GEORGE E. DICKSON, OF CHICAGO, ILLINOIS WEATHERPROOF NAIL Application filed July 15,

This'invciition relates to improvements in weatherproof nails and it consists of the matters hereinafter described and more particularly pointed out in the appended claims.

The primary objects of the invention are to provide a nail of the kind described, wherein thesoft metal cap is. applied .to the nail head by what is known as the cold method, at a great saving in time and in the amount of material making up the cap,,whereby said nails may be produced at a relatively low cost and with more simple dies whichare capable of, greater production life.

These objects of the invention-as well as others, together with the many advantages thereof, will more fully appear as I proceed with my specification.

In the drawing Fig. 1 is a perspective view of a weatherproof nail, made in accordance with my invention. I Fig. 2 is a vertical sectional view through the capped end of the nail after the same has been driven.

Referring now in detail to that embodiment of the invention illustrated in the accompanying drawing and especially to Figs.-

' 1 and 2 thereof, 1 indicates the cylindrical shank of a wire nail having a driving or piercing point '2 at one end and a head 3 at the other end. The head of the nail is of a diameter considerably greater than that of the shank and is flat as at 4 on its top surface and on the under side of the head at its j unction with the shank is provided a radial shoulder 5 of a. diameter a trifle greater than that of said shank.

6 indicates the cap as a whole which is made of a relatively soft metal such as lead and encloses the head 3 and the peripheral wall of said shoulder 5. Said cap includes a top wall or portion 7 having a rounded orcrowned top surface 8, a peripheral portion 9 of suitable thickness and a bottom portion 10 of a depth equaling that of the shoulder 5, the bottom surface 11 of said wall 10 flaring or tapering upwardly andoutwardly from the bottom edge of said shoulder. 4

In driving my improved nail for example through a galvanized iron roofing, the point-,2

- its crowned top described,

1926. Serial No. 122,521.

of the nail pierces the roofing 20, as at 21 turning down the metal thereof as shown in Fig. 2, thus bringing the bottom surface 11 of the-cap into snug seating engagement against such roofing, leaving a space 22 just below the shoulder so that only the soft metalof the cap course in driving the weatherproof nail, the top wall receives the hammer blows so that surface will be somewhat. flattened out. A weatherproof nail construction as above has many advantages. The amount of soft metal required to form-the cap is considerably reduced, and the cost of the finished weatherproof nail is of course reduced in proportion. Again the cap being securely seated against the shoulder as described prevents the points of the other nails in a keg being shipped, from prying the caps ofother nails loose from the head while such keg is in shipment. As the shoulder. 5 engages upon a flat surface of the die, instead of upon a sharpened edge as heretofore, the

production life of each dieis indeed greatly increased. I

While in describing my invention, I have referred to many details of construction as I well as form and arrangement of the parts thereof, it is only intended as by way of illustration so that I do not wish to be limited engages said roofing. Of.

thereto except as may be pointed out in theappended claims.

I claim as my invention:- 1. A weatherproof nail or the like embodying therein a shank and a head with an an .nular shoulder on the underside ofthe head,

and a cap member of relatively soft metal enclosing and in direct engagement with said head and having its bottom surface tapered upwardly and outwardly from said shoulder.

2. A weatherproof nail or the like embodying there-in a shank and a head with an annular shoulder on the underside of the head,

and a cap member of relatively soft metal enclosing and in direct engagement with said head. and the peripheral wall of said shoulder and leaving the bottom radial surface of said shoulder devoid of such metal.

3. Aweatherproof nail or the like embody- I ing therein a shank and a head with an annular shoulder on the underside of the head, and a cap member of relatively soft metal enclosing and in direct engagement with said head and the peripheral wall of said shoulder and tapering upwardly and outwardly from the bottom edge of said shoulder.

4. A weatherproof nailembodying therein a shank and a head with an annular shoulder on the underside of the head and a cap member of relatively soft metal enclosing and in direct engagement with said head and the periphery of said shoulder and terminating substantially flush with the bottom radial surface of said shoulder.

In testimony whereof, I have hereunto set my hand, this 1st day of July, 1926.

- GEORGE E. DICKSON.

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