IMPROVEMENTS IN CROSSHEADS FOR MOTIVE POWER ENGINES
Year: 1880

page_text: LETTERS PATENT to Henry Edward Newton, of the Office for Patents, 66,
Chancery Lane, in the County of Middlesex, Civil Engineer, for the Invention
of "IMPROVEMENTS IN CROSSHEADS FOR MOTIVE POWER ENGINES."
communication from abroad by Albert Louis George Dehne, of Halle, on the
Saale, in the Empire of Germany.
A
Sealed the 30th March 1880, and dated the 3rd February 1880.
COMPLETE SPECIFICATION filed by the said Henry Edward Newton at the
Office of the Commissioners of Patents on the 3rd February 1880.
HENRY EDWARD NEWTON, of the Office for Patents, 66, Chancery Lane, in the
County of Middlesex, Civil Engineer. "IMPROVEMENTS IN CROSSHEADS FOR
MOTIVE POWER ENGINES,"
The object of this Invention is so to construct the crossheads for the piston
rods of motive power engines that they can be readily tightened up when they
become worn or work loose in their guides. The cylindrical form of crosshead
is that to which this Invention relates.
In order that the Invention may be thoroughly understood, reference is had to
the accompanying Sheet of Drawings, in which Fig. 1 is a longitudinal section of
the cross head and its cylindrical guide taken on the line A, B, of Fig. 2, which
is a cross section of the same taken on the line C, D, of Fig. 1, and having the con-
necting rod removed. Fig. 3 is a longitudinal section of the crosshead taken on
the line G, H, of Fig. 4, which is a cross section of the same taken on the line E, F,
of Fig. 3. The same letters of reference throughout the figures indicate similar
parts.
The crosshead consists of a cylindrical case or surface a, and of a centre piece b;
the latter may be formed at its ends in any suitable way for coupling with a piston
rod and a connecting rod.
The case or surface a and the centre piece b are connected together by the arm
c, c, so that all these parts form one piece. The number of arms connecting the
case or surface a to the centre piece may vary.

page_text: The surface or case and the arms are slit at d and e, parallel to the axis of the
cross head; the opposite faces of these slits are recessed for the reception of conical
shaped screw bolts which extend from end to end of the crosshead.
The crosshead is inserted into, and works in the cylindrical guide h. In the
annexed Drawing the crosshead is shewn as coupled to the connecting rod i, and
the piston rod k.
When by reason of wear the crosshead works loosely in its guide, the circum-
ference of the case a may be increased by screwing up the screws ƒ and g until
a good fit is again obtained.
Having now described the nature of this Invention of " Improvements in
Crossheads for Motive Power Engines," as communicated to me by my foreign
correspondent, and explained the manner of carrying the same into effect, I wish it
to be understood that I claim constructing cylindrical crossheads in the manner
herein shewn and described, whereby their adjustment in their guides may be
readily effected as set forth.
In witness whereof, I, the said Henry Edward Newton, have hereunto set my
hand and seal, the Third day of February, in the year of our Lord One
thousand eight hundred and eighty.