Year: 1887

page_text: Date of Application, 30th Aug., 1887
Complete Left, 15th Nov., 1887
Complete Accepted, 16th Dec., 1887
[Communicated from abroad by HENRY EMANUEL RUSSELL, Managing Director and
Secretary of the Russell and Erwin Manufacturing Company, of New Britain,
Connecticut, United States of America.]
Nans aпи пррала
1, HENRY HARRIS LAKE, of the firm of Haseltine, Lake, and Co., Patent
Agents, Southampton Buildings, in the County of Middlesex, do hereby declare the
nature of this Invention to be as follows:-
This Invention relates to Screws or Screw-threaded Nails of the kind or class made
from round wire and having the screw-threads "rolled on," that is to say, formed by
pressure without cutting away or otherwise removing any of the metal.
The object of the said Invention is, by the employment of a peculiar ribbed formation
of the shank immediately under the head, to provide for retaining more rigidly than
heretofore in any desired position plates of metal through which the said Screws may
be passed to secure them to wood surfaces or the like.
Heretofore, the neck or portion of the shank immediately under the head has been
left round and of the norinal diameter of the wire stock from which the Screw was
made.
The act of rolling on "the thread invariably raises and throws out radially the
outer edge or highest part of the screw-thread, thereby increasing its diameter and
leaving the unthreaded portion of the wire much smaller in diameter than the
threaded portion.
When Screws so formed are used for securing to wood surfaces metal plates having
holes of sufficient size to receive the threaded body of the Screw, the neck under the
head will be too small to fill such hole and will, therefore, allow the plate to move in a
lateral direction. Should such a Screw after a time become loose, or should the wood
shrink, the metal plate may move laterally a considerable distance. This is particularly
•

page_text: objectionable in the case of escutcheons, strike-plates, butt-hinges and that class of
builder's hardware in which plates of metal are secured to wood surfaces.
To obviate this defect I form immediately under the head, a ribbed neck, by swaging
the round wire stock and making the same angular in transverse section or forcing
outward two or more longitudinal ridges or ribs until they are flush or approximately
so with the perimeter of the screw-threaded body, and will, therefore, fill a hole that
will just receive the said screw-threaded portion. When so formed, the slight loosening
of one or more Screws does not permit lateral movement of the metal plate and its
attachments as above described.
The shaping of the neck to accomplish the above mentioned result is effected by the
grippers in the act of forming the head, so that no additional expense is incurred in
imparting the said angular or ribbed form to the neck. This neck may extend to the
screw-threaded portion, such construction being best adapted for short Screws. In
longer Screws, the neck may stop short of the thread, thereby leaving a plain portion
of the normal size and shape of the wire.
In some cases, I slightly roughen the neck by indenting or "burring" its several
faces by means of roughened faces on the grippers. If desired, instead of roughening
the gripping dies, the said dies may be provided with well defined transverse grooves
to produce well defined transverse ribs, the tops or outer edges of which will project
diametrically beyond the normal size of the wire stock.
Dated this 30th day of August 1887.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.

page_text: Nails and in Apparatus therefor.
1, HENRY HARRIS LAKE, of the firm of Haseltine Lake and Co., Patent Agents,
Southampton Buildings, in the County of Middlesex, do hereby declare the nature of
this Invention and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement :-
This Invention relates to Screws or Screw-threaded Nails of the kind or class made
from round rods or wire and having the screw-threads "rolled on," that is to say,
formed by pressure between rollers without cutting away or otherwise removing any
of the metal.
The chief object of the said Invention is to provide for retaining in place more
rigidly than heretoforo plates of metal or other material secured to wood or other
surfaces by means of such Screws.
According to the method heretofore adopted of making Screws of this kind, the
neck or unthreaded portion of the shank is left circular in transverse section and of
the same diameter as the rod or wire from which the Screws are made. The act of
rolling on the screw-thread invariably raises or forces radially outward the outer edge
or highest part of the said thread, thereby increasing its diameter so that the unthreaded
portion of the Screw is left considerably smaller in diameter than the threaded portion
thereof. The result is that, when Screws so formed are used for securing metal or
other plates to wood surfaces, the holes formed in the said plates having to be of
sufficient diameter to permit the threaded parts of the Screws to pass through them,
the necks of the said Screws will be too small to fill the said holes, and, should the
Screws after a time become loosened or the wood shrink, the said plates will be free
to move laterally a considerable distance. The use of such Screws for securing to
wood surfaces escutcheons, strike-plates, butt-hinges and other articles of builders'
hardware comprising plates of metal, is, therefore, somewhat disadvantageous.
This disadvantage is obviated, according to the present Invention, by making the
Screws with a peculiar ribbed formation of the neck or unthreaded portion of the
shank, preferably by the use of gripping dies made substantially as hereinafter
described. The said ribbed formation may, however, be obtained in any other
convenient manner.
In the accompanying drawings
Figure 1 is a side elevation of one of the improved Screws.
Figure 2 is a transverse section on the line, Figure 1, looking toward the screw-
threaded part of the shank.
Figure 3 is a side elevation illustrating a modification of the said Screw.
Figure 4 is a transverse section of a screw having a triangular neck as hereinafter
set forth.
Figure 5 is a side elevation illustrating a further modification of the improved
Screw.
Figure 6 is a face view showing portions of a pair of griping dies hereinafter
described, and
Figure 7 is an edge view of one of the said dies.
The main portion a of the shank of the Screw is provided with a rolled screw-
thread, and the hoad b and point c are formed in the usual manner.

page_text: The neck or unthreaded portion d is made with longitudinal ridges or ribs formed
by swaging the round rod or wire and making the same angular in transverse section.
These longitudinal ridges or ribs are forced outward until they are flush, or approxi-
mately flush with the perimeter of the screw-threaded body a, so that, when the Screw
is inserted in a hole that will just receive the said screw-threaded portion, the said
ribs will be in contact with the edges of the said hole. When Screws so formed are
used for securing plates to flat surfaces, there is no liability to lateral movement of
the said plates by reason of the slight loosening of one or more of the said Screws or
the shrinkage of the wood or other material, as with Screws of, the kind above
described as heretofore made.
The neck of the Screw is shown in Figures 1 and 2 with four ribs, that is to say,
square in transverse section, and in Figure 4 with three ribs, or triangular in
transverse section. It may, however, be made with any other desired number of ribs
for the purpose herein specified.
The shaping of the neck to accomplish the above mentioned result is by preference
effected by the gripers or griping dies in the act of griping the blank to hold the
same during the formation of the head, so that no additional expense is incurred in
imparting the said angular or ribbed formation to the neck. For this purpose I make
the dies with flat working surfaces as shown in Figures 6 and 7.
The above described peculiar formation of the neck may extend to the screw-
threaded portion as shown in Figures 1 and 3, which construction is best adapted for
short screws; or it may stop short of the screw-thread, leaving a plain portion e of
the normal size and shape of the rod or wire, as shown in Figure 5. In Figure 3,
the neck is shown slightly roughened by indenting or "burring" its several faces by
means of roughened faces on the gripers or griping dies. If desired, instead of
merely roughening the faces of the griping dies, they are provided with well defined
transverse grooves as at f in Figures 6 and 7, to produce on the neck of the Screw
well defined transverse projections g, Figure 5, the tops or outer edges of which will
project diametrically beyond the normal size of the rod or wire.
may, if desired, form projections on the faces of the griping dies so that well
defined grooves will be formed in the neck of the Screw.
The neck may be made of any suitable shape in transverse section so as to provide
the same with one or more longitudinal ribs and thus ensure the fitting of the said
neck in a hole of the same diameter as the screw-thread, for the purpose above
specified.
Having now particularly described and ascertained the nature of the said Invention
and in what manner the same is to be performed as communicated to me by my
foreign correspondent, I wish it understood that I claim :-
First. A Screw or Screw-threaded Nail having the peculiar ribbed formation of
the neck or unthreaded portion of the shank, substantially as, and for the purpose,
above specified.
Second. The above described method of compressing the neck of a Screw or Screw-
threaded Nail by means of griping dies, in the course of its manufacture, to provide
it with one or more longitudinal ribs for the purpose above specified.
Third. The improved griping dies substantially as described with reference to
Figures 6 and 7 of the drawings for the purpose specified.
Dated this 15th day of November 1887
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.