IMPROVEMENTS IN NAILS, BOLTS, SPIKES AND OTHER SIMILAR IMPLEMENTS to be as follows
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
I, HERBERT JOHN ALLISON, of the firm of Allison Brothers, of 52 Chancery
Lane, London, in the County of Middlesex, Patent Agents, do hereby declaro
the nature of my invention for "IMPROVEMENTS IN NAILS, BOLTS, SPIKES AND
OTHER SIMILAR IMPLEMENTS to be as follows:-
"
My invention relates to improvements in nails, bolts, spikes and other similar
implements and consists in a certain device by means of which the holding power
of the same is increased.
The Dail is made of the same metal and general form as the ordinary cut nail in
common use. Depressions or indentations are inade on one, two, three or four sides,
or at the corners of the nail, at any suitable distances apart, either alternately or
opposite each other. Where the indentations are made upon the side instead of at
the corner, they throw out projections or barbs.
It will be understood that these depressions or indentations may also be made
upon bolts, spikes and other similar implements.
A continuation of closely arranged depressions may be made to give the effect of
a screw when held in wood.
Dated this ninth day of December 1884

page_text: •
COMPLETE SPECIFICATION.
I, HERBERT JOHN ALLISON, of the firm of Allison Brothers, of 52 Chancery
Lane, London, in the County of Middlesex, Patent Agents, do hereby declare the
nature of my invention for "IMPROVEMENTS IN NAILS, BOLTS, SPIKES AND OTHER
SIMILAR IMPLEMENTS and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :-
"
My invention relates to improvements in nails, bolts, spikes and other similar
implements and consists in a certain device by means of which the holding power
of the same is increased. It will be readily understood by reference to the
accompanying drawing and the letters referring thereto.
Fig. 1 is an edge view, and Fig. 2 a side view of an ordinary cut nail with one 1
form of my device employed in construction.
Fig. 3 is an edge view, and Fig. 4 a side view of a similar nail with another
form of my improvement wrought in the same.
Figs. 5 and 6 show still two other forms.
1
Fig. 7 shows one form of large spike or nail.
Fig. 8 shows a substitute for wood screw bolt.
The following is the construction of the same. I make the nails A, B, C, D,
E and F, of the same metal and general form as the ordinary cut nail in common
use. I form the depressions G alternately as shown in Figs. 1 and 2, or opposite
each other as shown by H in Fig. 3 when required. When the indentation is made 2
upon the side instead of at the corner of the nail, it throws out the projection
shown in Figs. 3, 7 and 8 which serves as a barb or tooth. The forms shown in
Figs. 1, 2, 3, 4, 5 and 6 are well adapted to the common cut nail or finishing nail.
Fig. 7 shows a large spike suitable for railroad work.
Fig. 8 shows the construction of a heavy bolt designed to take the place of the 2
wood screw bolt for which it is an excellent substitute.
I do not confine myself to the exact form of construction, or number of depressions
or projections, as a single one may be beneficially employed.
I also employ a continuation of closely arranged depressions to give the effect of
a screw when held in wood. I employ the depressions or barbs described, on one,
two, three or four sides, as may be required.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what
I claim is
3
1. The nail A, B, shown in Figs. 1 and 2, having the depressions G, constructed 3
and operated substantially as and for the purposes set forth.
2. The nails C, D, E and F, shown in Figs. 3, 4, 5 and 6, having the depressions
and barbs or teeth H, J and K, constructed and operated substantially as and for
the purposes set forth.
3. The spike shown in Figure 7, having the depressions L constructed and 4
operated substantially as and for the purposes set forth.
4. The bolt shown in Fig. 8 having the teeth M constructed and operated
substantially as and for the purposes set forth.
DL: 00-1 of Ton 100%