An Improved Metallic Packing for the Spindles of Corliss Valves and other Spindles having a similar Rotary Motion.
Year: 1892

page_text: Date of Application, 16th Dec., 1892
Complete Specification Left, 16th Sept., 1893-Accepted, 21st Oct., 1893
PROVISIONAL SPECIFICATION.
An Improved Metallic Packing for the Spindles of Corliss Valves
and other Spindles having a similar Rotary Motion.
We, SAMUEL DRUMMOND, of Lumb Lane Mill, Bradford, in the County of
York, Manufacturer, and THOMAS ABBOTT, of Manningham, Bradford aforesaid,
Engine-tenter, do hereby declare the nature of this invention to be as follows:-
.
This invention relates to improvements in the method of packing the spindles of
Corliss valves and other spindles having a similar rotary motion and its object is to
provide a simple steam tight packing adapted to cause little friction.
For this purpose we form or shrink or otherwise secure a steam-tight collar on
the valve spindle in such a position that it lies in the packing box when the spindle
is in position and we provide a gun-metal or other suitable packing ring fitting
loosely on the spindle between the front face of said collar and the packing-box
cover. The front face of said collar may be made concave or convex and the
collar made to accurately fit it so as to form a sort of ball joint and a similar joint
may be made between the said ring and the packing-box cover. A spring is
arranged in any convenient manner to keep the said collar, packing ring and
packing-box cover in contact.
This spring may be arranged to act on the spindle through the medium of a lever
bearing against an adjustable collar on said spindle. Or it may be mounted upon,
the spindle in front of or inside the packing-box.
Dated this 15th day of December 1892.
.
DRACUP & NOWELL,
Bradford, Agents.
COMPLETE SPECIFICATION.
An Improved Metallic Packing for the Spindles of Corliss Valves
and other Spindles having a similar Rotary Motion.
We, SAMUEL DRUMMOND, of Lumb Lane Mill, Bradford, in the County of
York, Manufacturer, and THOMAS ABBOTT, of 45, Victor Terrace, Manningham,
Bradford aforesaid, Engine-tenter, do hereby declare the nature of this invention
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
This invention relates to improvements in the method of packing the spindles of
Corliss valves and other spindles having a similar rotary motion and its object is to
provide a simple steam tight packing adapted to cause little friction.
For this purpose we form or shrink or otherwise secure a steam-tight collar on
the valve spindle in such a position that it lies in the packing box when the spindle
is in position and we provide a gun-metal or other suitable packing ring fitting
loosely on the spindle between the front face of said collar and the packing-box
cover. The front face of said collar is made concave or convex and the collar
made to accurately fit it so as to form a sort of ball joint. A spring may be
arranged in any convenient manner to keep the said collar, packing ring and
packing-box cover in contact.
Reference is to be had to the accompanying sheet of drawings forming a part of
this Specification, in which similar letters of reference indicate corresponding parts
in each of the figures.
Figure 1, represents a sectional view of the valve spindle bracket or valve box
cover and packing box of a Corliss valve engine together with a portion of the
valve spindle necessary to illustrate the application of our improvements thereto.

page_text: Figure 2, is a separate view of the spindle. And Figure 3, is a section of the
same on the broken line y, z.
The collar A is formed upon or secured by a steam-tight joint upon the spindle B
and in order to enable the spindle to be placed in position in the bracket C after
the collar A is fixed thereon the bottom of the packing box D is bored through.
The front face a of the collar is curved or rounded to form a portion of a sphere
and the face of the packing ring F (introduced between the collar and the
packing box cover G) is formed to the same curve as a. A spiral spring H more
or less compressed between the outer face of G and the adjustable collar J
fixed upon the spindle may be provided to keep A, F and G in contact, but the
steam or other pressure is in many cases sufficient to insure contact without the
spring.
It is apparent that the face of the ring F bearing upon G may also be rounded
but we find that leaving the ring free to adjust itself to position enables the rounded
face on the collar to maintain a tight joint notwithstanding the spindle may have a
certain amount of play in its bearings.
It is obvious that a spring lever adapted to be adjusted by a screw may be
arranged to bear upon the collar J instead of the spring H.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :
In a Corliss valve spindle or other similar spindle, a packing collar formed or
secured on said spindle the face of which collar is adapted to form a tight joint in
conjunction with a packing ring, substantially as herein shown and described and
illustrated in the accompanying drawings.
Dated this 14th day of September 1893.
DRACUP & NOWELL,
Bradford, Agents.