IM- PROVEMENTS IN APPARATUS FOR STRAIGHTENING OR BENDING SHAFTING, TUBES, RAILS, AND THE LIKE.
Year: 1876

page_text: ·LETTERS PATENT to William Robert Lake, of the Firm of Haseltine, Lake, & Co.,
Patent Agents, Southampton Buildings, London, for the Invention of "IM-
PROVEMENTS IN APPARATUS FOR STRAIGHTENING OR BENDING SHAFTING,
TUBES, RAILS, AND THE LIKE.' A communication from abroad by Charles
Schofield, of Vineland, New Jersey, United States of America.
led the 7th October 1876, and dated the 12th April 1876.
PROVISIONAL SPECIFICATION left by the said William Robert Lake at the
Office of the Commissioners of Patents on the 12th April 1876.
WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London. "IMPROVEMENTS IN APPARATUS FOR STRAIGHT-
ENING OR BENDING SHAFTING, TUBES, RAILS, AND THE LIKE." A communication.
This Invention relates to a bed of tubular form and open at the top for readily
admitting the article to be straightened or bent. Also to making the bearing or
supporting blocks longitudinally adjustable. Also to bracings for the open top of
the bed. Also to a brace for strengthening the bed at points occupied by a screw.
Also to a bed having a screw which may work as a common screw or as a com-
pound screw for exerting greater power, and which acts with nicety and ease on
the article to be operated upon. Also to the combination of various parts forming
an improved apparatus for the purpose of straightening and bending.
On the inner face of one side of the bed there are fitted two or more sliding
blocks consisting of pieces of metal constructed and arranged to bear at their backs
against the adjacent portions of the bed. The screw passes through the side of the
The said screw also
bed opposite to the bearings, and carries a swivelled head.
passes through a boss projecting transversely through the bed, and forming an
extended bearing for the screw. The bed will rest on a suitable base or support.
There is a brace which extends around the outside of the bed at the centre
thereof, but there may be one at each end of the bed, and the boss of the screw
projects through an opening in said central brace. I provide a series of loops,
rods, bars, or bracings, which are hinged or connected to one side of the upper
end of the bed, and they extend over the open end thereof, and are adapted to
engage with projections or other fastenings on the other side of the upper end
[Price 6d.]

page_text: of the bed. There is usually a bracing at each end of the aforesaid bed and one
at the centre thereof, although a greater or less number may be employed.
The shafting, axle, tube, rail, or other article to be straightened or bent is
introduced into the bed either through the ends or top, and brought in proximity
to the bearings, which should be previously or subsequently moved or adjusted
relatively to the bends in the article to be straightened or the place to be bent.
The said bracings are then properly applied and secured. The screw is now moved
in against the article, so that the latter will be held between the bearing blocks
and the swivelled head of the screw, the faces of these parts being grooved or
doubly inclined inwardly in order that they will properly hold and support the
article acted upon and be adapted for various sizes of articles. It is evident that
the pressure of the screw against the article at the point to be straightened or
bent will cause the same to give at such points since they have no immediate
support thereat, and thus the operation of straightening or bending will be readily
and properly performed.
The open top of the bed besides admitting of the introduction of the article to
be acted upon affords ready means of adjusting the bearing blocks and inspecting
the work.
The apparatus will be light but strong and durable, and may be applied. to
shafting and the like without removing the latter from its lathe or centres or
bearings of the shafting when hung in position.
The compound screw has its inner threads finer than the outer threads, so that
it will work with great power, nicety, and case.
The screw is swivelled to the
head so as to rotate thereon, and thus it will rapidly move to and from the work
without loss of time, it being adapted to be used as a common or compound screw
as circumstances require.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Robert Lake in the Great Seal Patent Office on the 12th
October 1876.
WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London. "IMPROVEMENTS IN APPARATUS FOR STRAIGHT-
ENING OR BENDING SHAFTING TUBES, RAILS, AND THE LIKE," A communication
from abroad by Charles Schofield, of Vineland, New Jersey, United States of
America..
This Invention relates to a bed of tubular form and open at the top for readily
admitting the article to be straightened or bent. Also to making the bearing or
supporting blocks longitudinally adjustable. Also to bracings for the open top of
the bed. Also to a brace for strengthening the bed at points occupied by the
screw. Also to a bed having a screw which may work as a common screw or as
a compound screw for exerting greater power, and which acts with nicety and
ease on the article to be operated upon. Also to the combination of various parts
forming an improved apparatus for the purpose of straightening and bending.
DESCRIPTION OF THE DRAWING.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Robert Lake in the Great Seal Patent Office on the 12th
October 1876.
WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London. "IMPROVEMENTS IN APPARATUS FOR STRAIGHT-
ENING OR BENDING SHAFTING TUBES, RAILS, AND THE LIKE." A communication
from abroad by Charles Schofield, of Vineland, New Jersey, United States of
America..
This Invention relates to a bed of tubular form and open at the top for readily
admitting the article to be straightened or bent. Also to making the bearing or
supporting blocks longitudinally adjustable. Also to bracings for the open top of
the bed. Also to a brace for strengthening the bed at points occupied by the
screw. Also to a bed having a screw which may work as a common screw or as
a compound screw for exerting greater power, and which acts with nicety and
ease on the article to be operated upon. Also to the combination of various parts
forming an improved apparatus for the purpose of straightening and bending.
DESCRIPTION OF THE DRAWING.
Figure 1 is a perspective view of apparatus embodying my Invention.
Figure 2 is a transverse vertical section of the said compound screw and
connected parts. Similar letters indicate corresponding parts throughout the
Drawing.
A represents a bed which is somewhat of tubular form and open at the top B
and ends a. On the inner face of one side of the bed there are fitted two or more
sliding blocks C, C, consisting of pieces of metal constructed and arranged to bear
at their backs against the adjacent portions of the bed; D represents a screw
Figure 1 is a perspective view of apparatus embodying my Invention.
Figure 2 is a transverse vertical section of the said compound screw and
connected parts. Similar letters indicate corresponding parts throughout the
Drawing.
A represents a bed which is somewhat of tubular form and open at the top B
and ends a. On the inner face of one side of, the bed there are fitted two or more
sliding blocks C, C, consisting of pieces of metal constructed and arranged to bear
at their backs against the adjacent portions of the bed; D represents a screw

page_text: which passes through the side of the bed opposite to the bearings C, and carries
a swivelled head D¹. The screw also passes through a boss H projecting trans-
versely through the bed and forming an extended bearing for the screw. The
bed will rest on a suitable base or support K. J represents a brace which extends
around the outside of the bed at the centre thereof, but there may be one at
each end of the bed, and the boss H of the screw D projects through an opening
in said central brace; L represents a series of loops, rods, bars, or bracings, which
are hinged or connected to one side of the upper end of the bed A, and they
extend over the open end thereof and are adapted to engage with projections or
others fastenings M on the other side of the upper end of the bed. In the present
case there is a bracing at each end of the bed and one at the centre thereof,
although a greater or less number may be employed. The operation is as follows:-
The shafting axle, tube, rail, or other article to be straightened or bent is intro-
duced into the bed A either through the ends or top, and brought in proximity to
the bearings C, which should be previously or subsequently moved or adjusted
relatively to the bends in the article to be straightened or the place to be bent.
The bracings L are then properly applied and secured. The screw D is now
moved in against the article, so that the latter will be held between the bearing
blocks and the swivelled head of the screw, the faces of these parts being grooved
or double inclined inwardly in order that they will properly hold and support the
article acted upon and be adapted for various sizes of articles. It is evident that
the pressure of the screw against the article at the point to be straightened or
bent will cause the same to yield at such points, since they have no immediate
support thereat, and thus the operation of straightening or bending will be readily
and properly performed. In some cases judgment should be exercised to subject
the article to repeated pressure of the screw, and at different points, the bearing
blocks being moved or adjusted to accomodate the work. It will be seen that
the pressure against the bearing blocks is transferred directly to the side of the
bed with which the blocks are in contact. The other side of the bed is likewise
subjected to great pressure, but the bracings L strengthen the upper or weakest
portion of the bed, and thus the latter is able to withstand the transverse strain.
The central portion of the bed, owing to the location of the screw D, is subjected
to the most strain, but this is amply provided for by the encircling brace J. The
open top of the bed besides admitting of the introduction of the article to be acted
upon affords ready means of adjusting the bearing blocks and inspecting the work.
The said apparatus will be light but strong and durable, and may be applied to
shafting and the like without removing the latter from its lathe or centres or
bearings of the shafting when hung in position. The aforesaid compound screw
has its inner threads finer than the outer threads, so that it will work with great
power, accuracy, and case. The said screw is swivelled to the head to rotate
thereon, and thus it will rapidly move to and from the work without loss of
time, being adapted to be used as a common or a compound screw as circumstances
require.
Having thus fully described the said Invention as communicated to me by my
foreign correspondent and the manner of performing same, I wish it understood
that I claim-
First. The bed with its open top as above described and for the purpose set
forth.
Second. The open bed with longitudinally adjustable bearing blocks as above
described and for the purpose set forth.
Third. The bracings in combination with the open top bed as above described
and for the purpose set forth.
Fourth. The brace encircling, the bed as above described and for the purpose
set forth.
Fifth. The bed having a screw operating as a compound or common screw as
above described and for the purpose set forth.

page_text: Sixth. The bed adjustable blocks screw and top bracings combined and operating
as above specified and for the purpose set forth.
In witness whereof, I, the said William Robert Lake, have hereunto set my
hand and seal, this Twelfth day of October, in the year of our Lord One
thousand eight hundred and seventy-six.
WM ROBT LAKE. (LS)
W ROBT LAKE (LS)