Year: 1886

page_text: I, ALFRED JULIUS BOULT, of 323 High Holborn, in the County of Middlesex,
Engineer, do hereby declare the nature of the said invention (a communication
from Horace Henry Charles Sintzenich, of the City of Toronto, Canada, Civil
Engineer) and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:—
The object of the invention is to design a chair for rail joints which shall possess
the necessary rigidity to ensure a continuous rail, which practically will never get
loose, and in which no bolt-holes are made in the rail; and it consists, essentially, of
a chair formed in the manner hereafter described to receive the rail, which chair
is secured to the tie preferably by three bolts, and is shaped to substantially fit one
side of the rail, forming a solid clutch on that side; the other side of the rail being
braced by a movable clutch secured by a single screw bolt, and so fitting the chair
that the lateral thrust caused by the pounding of the wheel flange against the
inside of the rail-head will be received by the solid chair, and will not cause any
strain on the bolt employed in holding the movable clutch in position.
Figure 1, is a perspective view of a double chair designed in accordance with
this invention.
Figure 2, is a section through, x, y, in Figure 1.
Figure 3, is a cross-section, showing alternative forms of chair and clutch.
Figure 4, is a detail of the chair.
Figure 5, is a detail of the movable clutch.
In the drawing, like letters of reference indicate corresponding parts in each
Figure.
A, is the chair made substantially in the form shown in the drawing, of cast
iron, steel, or any other suitable material; the dimensions of the chair, as well as
of the other parts connected therewith, being altered to suit the particular rail for
which it is intended, or to suit the judgment of the engineer adopting it. The
bottom of the rail B, rests upon the flat bed, a, made in the chair substantially the
width of the bottom of the rail.
b, is a flat side-piece, solid with, and forming part of the chair, A. This side-
piece is designed to fit against the body of the rail, B, a recess, d, being left between
the bed, a, and side-piece, b, for the reception of the flange of the rail, B. It is not
intended that the top side of the flange of the rail B, shall be in actual contact
with the chair, A, the only part of the rail, B, in actual contact with the said chair

page_text: being the bottom of the rail and the side of its body which fits against the side-
piece, b, of the saddle chair, A.
C, is what is termed a movable clutch.
This clutch, when made as shewn in Figure 1. consists of a side-piece,
corresponding with the side-piece, b, and designed to clutch the side of the body of
the rail, B, immediately opposite to that side against which the side-piece, b,
butts. A downwardly-projecting tail-piece, f, formed on the clutch C, is shaped
substantially in the form shown, and fits into a correspondingly-shaped recess, g,
formed in the main body of the chair, A, as indicated.
In placing the clutch, C, in position, the tail-piece f, is first placed into the
recess, g, and the clutch is then rolled down into position, where it is held by the
bolt D, which is screwed into the base of the chair, A, as shown.
This bolt, D, should be screwed into position on a line substantially at right
angles to the line of thrust caused by the pounding of the wheel-flange against the
inside of the rail-head. The end of the tail-piece, f, fits snugly within the
recess, g, and the shoulder h, formed on clutch C, butts against the rounded
shoulder i, formed on the basis of the chair, A. The strain of the said lateral
thrust has no ill effect upon the bolt, D. In fact, in practice it will be found that
the clutch, C, and the rail which it holds will remain in position without the bolt.
This quality will be found of value when trackmen are changing rails on a track
in use, for if caught by a train when the bolts D, were removed, the rail would
still remain in position, notwithstanding the said removal.
Having now particularly described and; ascertained the nature of the said
invention as communicated to me by foreign correspondent and in what manner
the same is to be performed I declare that what I claim is
1. A rail-chair, A, formed substantially as described to support the rail, B, in
combination with the movable clutch, C, substantially as and for the purpose
specified.
2. A rail-chair, A, having a bed, a, and a recess, d, formed in it to receive the
bottom of the rail, B, and the side-piece, b, to butt against the body of the rail B,
in combination with the movable clutch, C, arranged substantially as and for the
purpose specified.
3. The rail-chair, A, formed substantially as described to receive the rail, B, in
combination with the movable clutch, C, designed to butt against the body of the
rail, B, and provided with a tail, f, to fit into the recess, g, substantially as and for
the purpose specified.
4. A rail-chair, A, formed substantially as described to receive the rail, B, and
having a recess, g, and a rounded shoulder, i, formed in its base, in combination
with the movable clutch, C, provided with a tail f, to fit into the recess, g, and a
shoulder, h, to butt against the shoulder i, substantially as and for the purpose
specified.
5. A rail-chair A, formed substantially as described, to receive the rail, B, and
having a recess, g, and a rounded shoulder, i, formed in its base, in combination
with the movable clutch, C, provided with a tail f, to fit into the recess, g, and a
shoulder, h, to butt against the shoulder, i, the bolt, D, inserted through the
clutch, C, and chair, A, substantially as and for the purpose specified.
Dated this 7th day of Santamber 1886