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Патент USA US2412517

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Dec. i0, 1946.
Filed Jan. 26, 1945
Fg. 10 .
'25%' .9.
Patented Dec. lil, 1946
Karl Klein, Westport, Conn.
Application January 26, 1945, Serial No. 574,704
4 Claims. (Cl. 85,-10)
This invention relates to a nail and particu
larly to a nail which will have increased holding
gradually or may be relatively sudden and ,pro
vide a steep portion 5. The vanes 4 are tapered,
power over or by comparison with an ordinary
or conventional nail. It has for one object to
provide a nail structure so shaped that a sub
as at 6, and meetat a point "I, A ilat head 8
is formed integrally with the hollow portion I
a-nd the vane portions 3. As shown, there are
stantial part of the nail is put under heavy com
pression, and therefore tends deñnitely to ad
three vanes. For some purposes a lesser num
ber-or a greater number of vanes might be used.
here to the perforation or opening in which it
is positioned.
Another object is to provide a nail having a
The nail of Figure 5 differs mainly from the
nail of the earlier ñgures b-y the fact that an
maximum surface area for contact with the ma
portion. Thus the nail 5 consists of a hollow
cylindrical or tubular portion 9 with an integral
terial into which the nail is driven.
Another object is to provide a partially `hollow
nail with relatively thin` walls susceptible to
slightl distortion upon being subjected to com
Other objects will appear from time to time
throughout the specification and claims.
This invention is illustrated more or less dia
enlarged solid portion is present below the hollow
flat head l0. Below the hollow portion 9 is a
rounded, somewhat reduced solid portion II. A
relatively sharp taper I2 may join the exterior
of the portion I with the portion II. The solid
portion I I is tapered, as at I3, to form a point i4.
Formed integrally with the hollow portion 9
and the head I0 is a plurality of vanes I5. These
grammatically in the accompanying drawing, 20 vanes are of one diameter throughout substan
tially the length oi the hollow portion and are
Figure 1 is a side elevation of one form of the
Figure 2 is a plan View of the nail of Figure 1;
tapered to form vanes of less diameter' I6 gen
erally throughout the length of the~ solid `portion
I I, A relatively steep taper l1 may join the por
Figure 3 is a longitudinal section taken at line 25 tions I5 and I6 of each vane, or this taper may
be more gradual. The reduced vane portions I6
3--3 of Figure 2;
Figure 4 is a transverse section taken at line
are further reduced or tapered, as at I8, and
come together at the point I4. The entire struc
4-4 of Figure 3;
ture is preferably integral.
Figure 5 is a longitudinal section generally
similar to Figure 3, and showing a modified form; 30
The form of Figures 8, 9 and 10 diiîe'r's from
the preceding forms mainly in the fact that the
Figure 6 is a transverse section taken at line
hollow portion, instead of being tubular or Cylin
6_6 of Figure 5;
Figure '7 is a transverse section taken at line
drical, is irregularly shaped with a plurality of
'I-‘I of Figure 5;
Figure 8 is a side elevation with parts broken
away, showing a further modiñcation;
concaves. Thus a hollow portion AI9 is bounded
by three concave walls 20, although it might be
bounded by a larger number of walls. Vane por
tions 2I are formed integrally with the wall por
Figure 9 is a transverse section‘taken at line
9_9 of_ Figure 8; and
Figure 10 is a transverse section taken at line
Ill--Ill of Figure 8.
Like `parts are indicated by like characters
throughout the specification and the drawing.
As shown in Figures 1, 2, 3 and 4, the nail
comprises a generally tubular or cylindrical shank
tions 2'íl'. Below the hollow portion» formed by
the concave walls 2D' the vanes are reduced, as
40 at 22.
Each vane portion 2l may be joined to
the corresponding portion 22 by sharply reduced
or tapered `portion 23, or the taper may be more
gentle. The reduced Jportions, 23 are further -re
duced or tapered, as at 24, and meet to form a
section I. This is provided with relatively »thin 45 point 25. Formed on the nail and integrally
with its various parts is a head which comprises
Walls and a pointed or tapered bottom portion
an annularwall 25 and a iiat or shoulder portion
2. Integral with the cylindrical portion I is a
plurality of longitudinally disposed vanes 3.
2l. Within the annular member 26' andabove
the flat portion 2l is formed a depression 28’r
major length of the hollow portion I. They are 50 which may receive finishing material when the
nail is driven home.
reduced, as at 4. This reduction occurs approxi
Although I have shown an operative form of
mately at the point where the hollow portion I
my invention, it will be recognized that many
is reduced.
changes in the form, shape and arrangement of
The reduction from the portion of each vane 3
to the portion 4 of the same vane may occur 65 parts can be made Without departing from the
These vanes are of one diameter throughout the
spirit of the invention, and my showing is there
fore to be taken as, in a sense, diagrammatic.
The use and operation of this invention are
9 or 20 which carries the vanes or prongs 3, I5
or 2| -having some resiliency and being under
compression, offers resistance to the displacing
which is exerted upon the nail by -the walls of
This nail may -be used for almost any purpose 5 the holes or perforations within which .the nail
lies. 'I‘hus by compressing the walls of the hollow
for which a nail is required, but i-t is particularly
advantageous for use where especially strong
holding powers are required. In many situations
in which a nail is required, it is undesirable or
portion, a force is obtained which presses from
.the center of the hollow portion outwardly toward
the periphery and creates friction between the
unsatisfactory to use a drive screw or a ring shank 10 nail and the walls of the hole within which it
lies. This friction is suñicient to result in ade
nail or other nails having a shank with more or
less transverse members. With certain types of
wood and wood in certain conditions, some nails
having roughened shanks or drive screw nails
tend to break or shred the fibers of the Wood and
when >that occurs, as the lumber in which the nail
is driven dries out, the hold of the nail upon the
lumber is weakened by the drying of the shredded
or broken fibers. It is one of the purposes of this
invention to provide a nail having substantial
holding powers and arranged to break or disturb
the fibers of the wood as little as possibleThe nail also has important uses as a nail in
which it is used to fasten plaster board, laminated
boards and other structural members in place
and in which the nail itself is driven flush with
the outer surface or actually beneath the outer
surface and a finishing material such as plaster
is applied to the entire wall structure.
quate holding power and to prevent displacement
of the nail.
The head of the nail is, in the form shown,
only slightly larger lthan the over-all diameter of
.the nail, including the vanes. It might be of
greater or less relative diameter. When the nail
is driven the head may be countersunk, if de
sired, and ñnishing material such as plaster or
something comparable to it may be spread over
the wall end of the nail head and will penetrate
into .the nail and key with it as above described.
I claim:
1. In combination in a nail, a hollow shank
portion, closed at one end, a plurality of generally
radially projecting vanes positioned on the ex
terior of said hollow portion and spaced about its
surface, said vanes being of reduced radial extent
below said hollow portion, and joined at their
In a case of that sort a nail of the form of 30 inner edges and terminating in a point, there
being a head ñxed upon the nail, the hollow por
Figure 8 has particular advantages, but the other
tion, the vanes and the head being integral with
forms are also adaptable. A part, at least, of
respect to each other.
.the hollow may receive finishing material which
2. In combination in a nail, a hollow unbroken
keys with it and which not only covers the nail,
cylindrical shank portion having one end open, a
but serves Ito hold lthe finishing material in place
plurality of generally radially projecting vanes
because of its engagement with the nail.
positioned on the exterior of said hollow portion
When the nail is to be used in any of its forms,
and symmetrically spaced about its surface, said
it is driven into .the material which is Ato be held
vanes being of reduced radial extent below said
in place. In each form of the device the lower
portion is of less diameter than an upper portion. 40 hollow portion, and joined at .their inner edges
and terminating in a point, a nail head at the
The lower portion serves as a penetrating and
open end of the shank. the hollow portion, the
hole or perforation forming member. It is into
vanes and the head being integral with respect to
this hole or perforation which has initially been
each other.
formed by the lower portion of the nail that the
3. In combination in a nail having a plurality
upper portion or larger portion of the nail is 45
of outwardly directed vanes of varying radial
driven. As the larger portion of the nail moves
extent, the lower ends of said vanes being joined
into the opening formed by the smaller or nar
at their inner edges, and terminating in a point,
rower portion of the nail, it is put under com
pression andthe thin walled hollow portion is put
and means for exerting an outward pressure upon
under definite and substantial compression. As a
the material into which said nail is driven, said
means comprising a relatively thin walled hollow
result of this, the outer surface of the hollow
portion of the nail grips the wall of the perfora
tion into which it has been driven more eiîec
tively than would be the case if the entire nail
were of uniform diameter.
The narrower or smaller part of the nail is
solid and that is the portion which effects pene
tration of the Wood or wall board or other ma
member carrying said vanes, all of the parts of
said nail being integrally formed each with re
spect to the others.
4. In combination in a nail a plurality of sym
metrically> spaced, outwardly directed vanes of
varying radial extent, said vanes being of lesser
radius toward the lower portion of the nail, and
terminating in a point, and means for exerting
.terial into which the nail is driven. Because this
relatively thin walled tubular section has resili 60 an outward pressure upon a body into which the
nail is driven, said means comprising a relatively
ency, it is capable of exerting pressure in a radial
thin walled hollow member carrying said vanes,
direction against .the wood or wall board or other
and positioned generally above and away from
material into which it is driven.
the point of said nail, all of the parts of said nail
This is in sharp contrast to the performance
of a solid nail which, when driven into such ma
terial, lacks resiliency and can exert no pressure,
radial or otherwise, upon the material which en
gages it. Tha-t portion of the hollow member I,
being integrally formed each with respect to the
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