IMPROVED APPARATUS FOR DRAWING BOLTS
Year: 1861

page_text: LETTERS PATENT to William Edward Newton, of the Office for Patents,
66, Chancery Lane, in the County of Middlesex, Civil Engineer, for the
Invention of "IMPROVED APPARATUS FOR DRAWING BOLTS."-A communi-
cation from abroad by Hamilton Towle, of Cambridge Port, Massachusetts,
in the United States of America.
Sealed the 19th September 1861, and dated the 9th April 1861.
PROVISIONAL SPECIFICATION left by the said William Edward Newton
at the Office of the Commissioners of Patents, with his Petition, on the
9th April 1861.
I, WILLIAM EDWARD NEWTON, of the Office for Patents, 66, Chancery Lane,
in the County of Middlesex, Civil Engineer, do hereby declare the nature of
the said Invention for "IMPROVED APPARATUS FOR DRAWING BOLTS," to be as
- follows:-
This Invention of improved apparatus for drawing bolts is intended to be
applied more particularly for drawing the copper or other bolts used in ship-.
building, and has for its object to effect this operation in such a manner that
the bolts may not be injured or bent when being drawn, nor the timbers
damaged, as is now the case.
The apparatus consists principally of a hollow screw, at the lower end of
which is adapted a pair of spring jaws provided internally with serrated or

page_text: roughened surfaces, so as to enable them to grasp and hold the head of the
bolt firmly. This hollow screw passes through a female screw made in the
boss of a wheel, to which rotary motion may be communicated by means of
suitable gearing. The wheel containing the female screw is held in its place
by a ring or other suitable contrivance, which will secure it to the fixed framing,
and yet allow it to rotate on its axis. The operation of the apparatus will be
as follows:-The spring jaws at the bottom of the screw are made to take
hold of and firmly grasp the head of the bolt, and the hollow spindle being
made to bear against the wood round the bolt head, the wheel containing the
female screw is rotated, and by this means will draw up the screw, and with
it the bolt out of the wood.
Owing to the length of some bolts, they may require two operations to draw
them; the screw is therefore made. hollow, so that the bolt may be allowed to
pass up into it, and then the spring jaws carried down a second time to take
another grip of the shaft of the bolt.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Edward Newton in the Great Seal Patent Office on
the 9th October 1861..
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
EDWARD NEWTON, of the Office for Patents, 66, Chancery Lane, in the County
of Middlesex, Civil Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Ninth day of April, in the year of our Lord One
thousand eight hundred and sixty-one, in the twenty-fourth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
William Edward Newton, Her special license that I, the said William Edward,
Newton, my executors, administrators, and assigns, or such others as I, the said
William Edward Newton, my executors, administrators, and assigns, should at
any time agree with, and no others, from time to time and at all times there-
-after during the term therein expressed, should and lawfully might make, use,
exercise, and vend, within the United Kingdom of Great Britain and Ireland,
the Channel Islands, and Isle of Man, an Invention for "IMPROVED APPARATUS
FOR DRAWING BOLTS," being a communication from abroad, upon the condition
(amongst others) that I; the said William Edward Newton, by an instrument
in writing under my hand and seal, should particularly describe and ascertain

page_text: +
the nature of the said Invention, and in what manner the same was to be
performed, and cause the same to be filed in the Great Seal Patent Office
within six calendar months next and immediately after the date of the said
.Letters Patent.
NOW KNOW YE, that I, the said William Edward Newton, do hereby
declare the nature of the said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement, reference being had to the Drawing hereunto annexed,
and to the letters and figures marked thereon (that is to say :-
This Invention of improved apparatus for drawing bolts, is principally
intended to be used in the repair of ships and other vessels for the purpose of
drawing from their timbers or frames the bolts or fastenings used to secure
the planking to the timbers; but the apparatus may also be employed for
drawing bolts or fastenings used in other structures. One of the principal
advantages of the apparatus is, that the bolts are drawn in such a manner as
not to bend or injure them so as to prevent them from being again employed
for their legitimate use. It is well known that the ordinary method of drawing
bolts or fastenings from timber bends and injures them in such manner and
degree that they are unfit for further use, which is a great loss, particularly
when the bolts are made of copper, which is the case, to a great extent, in
Government vessels. The usual mode of drawing also injures the timbers by
splitting them, and also leaving in them a hole of irregular shape to be
.plugged.
To overcome these objections is the object of the present Invention, and the
apparatus whereby, it is effected is shewn in the accompanying Drawings, in
which Fig. 1 is a vertical and sectional elevation of the machine taken in the
lines A, B, and C, D, of Fig. 2; Fig. 2 is a partial plan view of the same;
Fig. 3 is a transverse section at the line E, F, of Fig. 1.
1.
The part a, a, is of a cylindrical form, having arms or projections from its
sides for the support of the shafts or axles b, b. The cylindrical part a, a, also
forms a case or covering for the screw c, and a rest or bearing for the nut d.
In the part a is fitted a feather e to prevent the screw c from turning with the
nut d. The screw c is made hollow to allow of the peculiar arrangement of
the jaws or dies f, and also to permit of the bolt, when being drawn, to pass
unobstructed through it. One end of the screw c is internally made in the
form of the frustrum of a cone or pyramid for the reception of the jaws or dies f.
The jaws or dies f are for holding the bolt, and are made of steel, and are
properly hardened and tempered. Their external surfaces are fitted to the

page_text: conical cavity at one end of the screw c, and the inner surfaces of the jaws are
serrated, or have teeth cut upon them, so that they gripe well upon the bolt
that is required to be drawn. Above the serrated portion of the jaws there
are recesses in which is placed a circular spring g, that causes the jaws to
open while being drawn out by the tube h. On each of these jaws are bails
or handles by which they may be drawn out or forced in upon the bolt. The
transverse section of these jaws may, if desired or preferred, be of a rectangular
or other shape than that shown in the Drawings. The ram h is made of a
tubular form to allow the bolt to pass up through it, and having on its opposite
sides projections by which to form the connection between the jaws and ram.
The helical spring i is for the purpose of returning the several parts to their
proper places, and also to close the jaws f, f, upon the bolt. The washer or
collar forms the connection between the spring i and the jaws f. The office of
the handle k (Fig. 1) is to return the screw to its position for taking hold of
the bolt without loss of time, and is to be removed when the cranks m are in
use, one of which only is shewn in the Drawing. The axle b', and its pinion
(drawn in red in Fig. 1) which gears with the wheel o are to be used for
multiplying or increasing the power when required. The pinions n on the
opposite sides of the large toothed wheel are for the convenience of two men
working at the same time, if required.
The operation of the machine as follows: On the machine being applied
to or placed over a bolt, the jaws fare drawn back (upon the inclined surfaces
upon which they rest) by the tube or ram h. The jaws fare at the same time
forced apart or opened by the circular spring 9. The jaws are then ready to
gripe the head of the bolt, which operation will be effected by the jaws being
forced or driven upon the head by the advance of the tube or ram h; which is
free to move the length of the slots or openings in the bails or handles marked Z.
Upon power being applied to the hollow screw c through the toothed wheels
or gearing shewn in the Drawing, the jaws will be caused to grasp the
bolt so firmly as to remove it if power be continued to be applied, so as to
draw up the screw è and the jaws with it. If the bolt to be drawn is longer
than can be drawn at one pull, the screw may be turned back and a new hold
taken, and the process continued until the bolt is completely drawn out of the
timber. After the bolt is removed the pinions n are thrown out of gear, and
the screw c may be run back to its original position, so as to receive another
bolt. This operation may be effected by the handle k, and the machine will
then be again ready for operation.
Having now described the Invention of improved apparatus for drawing

page_text: bolts, and having explained the manner of carrying the same into effect, as
communicated to me by my foreign correspondent, I claim as the Invention
secured to me by Letters Patent as aforesaid, the combination and arrange-
ment of the several parts herein described and shewn for the purposes above
set forth.
In witness whereof, I, the said William Edward Newton, have hereunto
set my hand and seal, this Seventh day of October, in the year of
our Lord One thousand eight hundred and sixty-one.
0 Witness,
J. W. MOFFATT,
66, Chancery Lane.
W. E. NEWTON. (L.S.)