An Improvement in Oylindrical or Hollow Shafts, such as are used. for Carrying Spiral Edges or Cutters.
Year: 1894

page_text: Date of Application, 13th Dec., 1894
Complete Specification Left, 25th July, 1895-Accepted, 7th Sept... 1895
"
PROVISIONAL SPECIFICATION. .
An Improvement in Oylindrical or Hollow Shafts, such as are used.
for Carrying Spiral Edges or Cutters.
HENRY SMITH 83 Thirlwell Road' Heeley Sheffield, in the County of York,
Engineer do hereby declare the nature of this invention to be as follows:-
Hollow tubes or shafts as presently used for carrying the spiral cutter blades, or
edges, in cropping or shearing machines are liable to vibrate or expand when
running at high speeds.
To obviate, or remedy, these defects I propose to stiffen the tubes or cylinders as
follows. At intervals along the barrel of the cylinder I bore holes at right. angles
through the tube. These holes I countersink & tap with a screw thread, through
the tapped or screwed holes I insert screwed rods or stays projecting sufficiently at
both sides of the barrel or cylinder to allow of being rivetted securely in their
position so that when said cylinder is turned up true ready for mounting with the
spiral blades or cutters, the screwed rods or stays are not loosened, but act as
supports to sustain the walls of the barrel or tube, stiffening them to prevent
vibration & also clamping them together to prevent the expansion. caused by
centrifugal force when the cylinders are working.
Dated this 17th day of December 1894.
An Improvement in Cylindrical or Hollow Shafts, such as are used
for Carrying Spiral Edges or Cutters.
I, HENRY SMITH late of 83 Thirlwell Road, but now of 103, Artisan View
Heeley, Sheffield, in the County of York, Engineer, do hereby declare the nature
of my said invention and in what manner the same is to be performed to be
particularly described and ascertained in and by the following statement :-
Tubes or hollow shafts as presently used for carrying the spiral cutter blades or
edges, in cropping or shearing machines for linen, jute, cotton, wool, velvet, plush
or other textile fabrics are liable to vibrate when running at high speeds.
To obviate or remedy these defects I propose to stiffen the tubes or cylinders as
follows. At intervals I bore holes at right angles to and through the tube or
cylinder. These holes I countersink and tap with a screw thread, through the
tapped or screwed holes I insert screwed rods or stays projecting sufficiently at
both sides of the tube or cylinder to allow of their being rivetted securely in
position so that when said tube or cylinder is turned up true ready for mounting
with the spiral blades or cutters, the screwed rods or stays are not loosened, but
act as radial or transverse supports to sustain the walls of the said tube or cylinder,
stiffening them to prevent vibration caused by centrifugal force when they are

page_text: The nature of my invention will be better understood on reference to the
accompanying sheet of drawings in which,
Fig. 1, is an elevation partly in section of one of my improved cylindrical or
hollow shafts.
Fig. 2, being a cross section of the same.
The same letters refer to similar parts throughout the several views.
a, is the cylindrical or hollow shaft, b, b, are the gudgeons or trunnions of the
same.
c, c, are pins for securing the gudgeon to the cylinder.
d, d, d, d, are the screwed rods or stays acting as radial or transverse supports to
the walls of the cylindrical shaft. e, e, are loose washers employed for securing the
spiral blades to the cylinder, a.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what I
claim is,
1. In cylindrical or hollow shafts such as are used for carrying spiral edges or
cutters, the introduction of screwed rods or stays screwed and rivetted into position
at intervals to act as radial or transverse supports to stiffen the same and to prevent
vibration when running at high speeds, in the manner and for the purposes
substantially as herein described and illustrated.
Dated this 24th day of July 1895.
R. HEBER RADFORD,
Agent for the Applicant.