Improvements in Means for Reducing Friction in Sluice Valves, and in Packing therefor.
Year: 1895

page_text: Date of Application, 30th Jan., 1895-Accepted, 23rd Mar., 1895
COMPLETE SPECIFICATION.
Improvements in Means for Reducing Friction in Sluice Valves,
and in Packing therefor.
THOMAS BLAKEBOROUGH of J. Blakeborough & Sons Hydraulic Engineers
Brighouse Yorkshire. I 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, that is to say :-
This invention has for its objects, the providing of a watertight durable packing,
and the reduction of friction by the form of packing and the application of ball, or
conical roller bearings, all specially applicable to sluice valves.
The foregoing being the nature and objects of this invention, its application is
now described and illustrated.
Reference being had to the annexed sheet of drawings, which are marked with
letters and figures of reference corresponding with those in the following explanation
like letters being used to denote like parts throughout.
Fig. 1 is a sectional elevation shewing the mode of applying the packing.
A, is the upper part of a sluice valve body of cast iron, B is the cover or bonnet
bolted onto the body A. of cast iron, and fitted with a coned bearing of antifriction
metal, C. D, is the bridge piece of cast iron or brass which rests upon each side
of the body A, and is provided with E, an antifriction metal washer. F, is a vul-
canized rubber packing of special form G, is a gland of cast iron bolted onto the
cover, B, and fitted with H, a bush of gun metal. I, is the rotating spindle of gun
metal, provided with a coned collar to suit the bearing C. J, is the spindle cap
of cast iron.
Figure 2. is a sectional elevation similar in its leading features to Fig. 1. but
shewing the mode of applying ball or conical roller bearings along with the special
packing. K, K, are the ball or roller bearings of hard gun metal, placed both above
and below, or only above or only below (as occasion requires) the collar on the
spindle, I, which is prepared to receive them. L, L, are ball or roller paths of gun
metal specially prepared to receive the balls K. K. The rubber packing F, is hat
shape in form to fit round the spindle I, and project downwards into the cover B,
and is provided with a circular flange, which fits into a recess in the cover, B.
The gland, G, holds it firmly in position without distortion, preventing passing of
fluid, and allowing the spindle, I, to revolve freely.
The rubber packing may be either hat shape or U shape, and placed in the same
position on the spindle, 1.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim as being novel are the following points,
Firstly. The application of vulcanized rubber packings of the forms described
and shewn to sluice valves, and in the manner shewn on the accompanying drawing
Figure 1.
Secondly. The application of ball or roller bearings to sluice valves in the manner
described, and shewn on the accompanying drawing Figure 2.
Dated this 29th day of January 1895.
THOMAS BLAKEBOROUGH.