Improvements in Straight Way Valves.
Year: 1893

page_text: Date of Application, 4th Apr., 1893-Accepted, 10th June, 1893
COMPLETE SPECIFICATION.
Improvements in Straight Way Valves.
I, EDMUND H. LUNKEN, of 34 Grand Street, Walnut Hills, Gincinnati, Ohio,
United States of America Manufacturer, 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 :-
My invention relates to all classes of straight way valves employing either one
or two valve disks, and it has for its object the improved construction of the same
and the production and application of a removable and renewable seat or seats,
whereby their cost is reduced to a minimum and their efficiency is increased.
The novelty of my invention will be hereinafter set forth and specifically pointed
out in the claims.
In the accompanying drawings-
Figure 1, Sheet 1, is a front elevation of a valve embodying my invention.
Figure 2, Sheet 1, is a side elevation of the same.
Figure 3, Sheet 1, is a transverse sectional view of the valve in elevation.
Figure 4, Sheet 1, is a front elevation of the body of the valve with the bonnet
removed, and showing the application of the operating handle or wrench for the
removable seat.
Figure 5, Sheet 1, is a perspective view of the removable ring seat.
Figure 6, Sheet 2, is a central sectional end elevation of the valve when
opened.
Figure 7, Sheet 2, is a sectional view through the body of a valve with two disks,
and with the wedging half ring interposed between them.
Figure 8, Sheet 2, is a sectional elevation of the body, showing the application
of the wedging half ring.
Figure 9, Sheet 2, is a perspective view of the wedging half ring.
Figure 10, Sheet 2, is a sectional detail of the lower part of the valve stem
under a modified form of construction.
Figure 11, Sheet 2, is a side elevation of the operating handle or wrench for
the ring seat.
The same letters of reference are used to indicate identical parts in all the
figures.
A is the body of the valve of the usual or any suitable construction, with threaded
pipe connections, a, in line with each other and with the valve opening. In
Figures 1, 2 and 3 and 6, I have shown but a single valve disk, B, which when
lowered is forced uniformly and tightly to its seat, C, by a self-adjusting half
ring, D, Fig. 9, loosely fitted in a groove in the body, and whose upper beveled
ends engage inclined shoulders on the rear of the disk, B, approximately on a
horizontal diametrical line.
E is the bonnet of the valve fitted upon the body with an intermediate packing,
and secured thereto by a single clip-bolt, F, embracing the body and held between
lugs, d, at its bottom, Fig. 3, and in recesses, e, in the sides of the body and
bonnet, while its upper threaded ends are passed through perforated ears or lugs, c,
projecting from the bonnet, and have nuts, f, screwed upon their upper ends to
lock the parts securely together. By this simple and secure manner of uniting the
body and bonnet I am enabled to do away with the enlarged flanges heretofore
sed, and through which bolts were passed to lock the parts, and I consequently
ave much metal and render the valve more compact, as will be readily understood.
In addition to these advantages 1 obtain greater strength in the valve shell,
both to resist bursting strain from expansion and contraction and internal

page_text: pressure, and to resist the pressure requisite in forcing the disk or disks tightly
to their seats.
The bonnet, E, is just of sufficient size to receive within it the valve disk
or disks when entirely raised, as seen in Fig. 6, and to afford a sufficient extension
at the top for a stuffing. box, whose cap nut, G, is screwed upon its exteriorly
threaded end.
The stem, H, of the valve, with a hand wheel, I, at its upper end, passes down
through the stuffing box and bonnet and engages the upper end of the valve disk
or disks, by means of a collar, h, on its lower end, confined in a horizontal slot, i, in
the upper edge of the disk or disks. Just above the collar, h, the stem is enlarged
for a short distance and threaded, as shown at J, to engage sectional or part-nut
threads, g, in the opposite sides of the bonnet in the space occupied by the disk or
disks when raised, as seen in Fig. 6, so that the turning of the stem carries the
disk or disks up and down with it. The part J, instead of being integral with the
stem, may be a threaded sleeve, as seen in Fig. 10, fitted and secured upon the stem
by a pin or screw.
By having the wedging half ring loose and movable in the body it can always
adjust itself to both sides of the disk or disks to cause the same to be seated true
and uniformly, as will be readily understood.
The remaining feature of my invention consists in the provision and application
of a removable and renewable seat for the disk or disks, which can, after taking
off the bonnet, be applied through the disk opening of the body without disturbing
the pipe connections. It is well known that in valves of this class the seats wear
by use and often become untrue, thereby rendering the whole valve useless and
requiring it to be replaced by a new one. To remedy this and to prolong the life
of the valve almost indefinitely. I form in the valve body a tapped seat bearing,j,
Fig. 3, whose inner edge is slightly tapering, and into this bearing is screwed the
valve seat, C, Figs. 3 and 5, in the following manner : The valve seat, C, is an
exteriorly-threaded ring with an inner flange, k, whose inner face constitutes the
seat and whose outer face is slightly beveled, as seen more particularly in Fig. 3.
Upon the inner side of the ring are a number of equidistant projections or teeth, l,
but slightly raised above the inner surface of the ring.
The teeth or lugs, l, are shorter than the ring, C, constituting the valve seat, so
that their ends are set back from the seating or bearing surface of the valve seat.
The periphery of the ring is milled or otherwise roughened, to provide a gripping
surface whereby the valve seat can be turned by a pointed instrument, as is
desirable in first screwing or starting the valve seat in when getting it into place.
The ring thus constructed is slipped through the seat opening of the body before
the bonnet is applied, and is screwed into the bearing, j, by means of a wrench, J¹,
Figs. 4 and 11, which is simply a hand-piece flattened at its lower end, on one
side of which are two engaging shoulders, m, which fit in between the teeth, l, as
seen in Fig. 4, to enable the wrench to become hooked to the ring and to turn the
same to screw it home. By vibrating the wrench in the seat opening of the body
the ring, C, can be screwed into place or unscrewed when it is desired to replace
the old seat with a new one, as will be readily understood. It is evident that the
wrench might be made to engage notches in the outer edge of the flange, k, instead
of the projections, l, and said notches might be used to start the screwing in
of the seat with the fingers before applying the wrench to the projections, l. By
tapering the outer face of the flange, k, a perfectly tight joint is effected with the
seat opening.
In Fig. 7 I have shown the application of the wedging half ring to a valve with
two disks, in which construction the ring at its upper ends is beveled on both sides
and is held in place by a metal strap, o, and in the same figure I have shown the
application of the seat ring to iron bodies. When iron bodies are used the seat
ring would become rusted tight, and could not be unscrewed if screwed directly
into the iron body, so I provide a supplemental brass ring, n, preferably threaded
exteriorly and interiorly, which is screwed or otherwise secured in the valve body,

page_text: so as to become a permanent part thereof, and into this ring, which has its inner
edge beveled as shown, the seat ring, C, is screwed as before described.
When only a single disk is used I prefer to employ projections n, Fig. 9, on the
rear top edges of the half ring, to enable the latter to better adjust itself, against
lateral movement by bearing against the valve body, as seen in Fig. 3, or, if
desired the projections may be in the valve body and bear against the edges of the
half ring.
When these seats become worn it is only necessary to remove the bonnet and
take out the worn seat and replace it with a new seat, whereupon the valve is
rendered as good as new.
As the disk or disks are likewise renewable when they wear and become untrue,
the valve is practically indestructible.
Having now particularly described and ascertained the nature of this inveu-
tion and in what manner the same is to be performed I declare that what [
claim is
1. In a straight way valve, the combination with the body and its disk or disks,
of a stem for operating the latter and having a threaded portion engaging threads
formed in the recess occupied by the disk or disks when the valve is open.
2. In a straight way valve, the combination with the body and its disk or disks,
of a stem for operating the latter, having thereon a threaded portion engaging
part-nuts on opposite sides of the space occupied by the disk or disks when the
the valve is open.
'
3. In a straight way valve, the combination of the body and its disk or disks, a
stem for operating the latter and having a threaded portion thereon, and a bonnet
having threads on its inner sides on opposite sides of the space occupied by the
disk or disks when the valve is open and engaging the threaded portion of the stem,
substantially as described.
4. In a straight way valve, the combination of the body and its disk or disks and
a stem for operating the latter and having a threaded portion thereon, a bonnet
having threads on its inner sides on opposite sides of the space occupied by the
disk or disks when the valve is open and engaging the threaded portion of the stem,
and a wedging half ring secured in the body to cause the tight seating of the valve
when closed.
5. The combination in a straight way valve, of the body and its removable seat,
the valve disk, the elongated narrow two-eared bonnet provided with means for
operating the valve disk, and a tie-bolt surrounding the body with its ends
projecting through the ears of the hood and secured by nuts, whereby a secure,
compact connection between the body and bonnet, in close proximity to the
removable valve seat, is effected, substantially as described.
6. The combination in a straight way valve, of the body and its removable seat,
the valve disk, the threaded disk carrier, the elongated narrow two-eared bonnet
having part threads formed in its inner sides engaging the threads on the disk
carrier, and a tie-bolt surrounding the body and held from lateral movement by
lugs, said tie-bolt having its ends projecting through the ears of the bonnet and
secured by nuts, substantially as described.
7. In a straight way valve, the combination with the valve body provided with
a narrow elongated opening in close proximity to the valve seat, of a removable
valve seat consisting of a ring having threads on its outer periphery, a series
of lugs set back from the valve seating surface on its inner periphery, and a
double faced flange projecting from the end of said ring, with its outer edge
provided with a roughened or gripping surface, the whole being so constructed
that the valve seat can be inserted through said opening or taken out through
the same, without injury to the bearing surfaces of the valve seat, substantially as
described.
8. In a valve, the combination of an iron body, a brass ring secured therein and
threaded interiorly to form a seat bearing, and a threaded ring seat having gripping

page_text: surfaces, and adapted to he inserted through the disk opening of the body and
screwed into said brass ring, substantially as described.
9. In a straight way valve, the combination of the body having a valve seat, a
valve disk for said seat, means for opening and closing the valve, and a self-adjusting
wedging piece for forcing the disk to its seat, substantially as described.
10. In a straight way valve, the combination of the body having a valve seat, a
valve disk for said seat, means for opening and closing the valve, and a self-adjusting
wedging half ring for forcing the disk to its seat, substantially as described.
11. In a straight way valve, the combination with the body and valve disk, of a
self-adjusting wedging half ring, and projections in rear of the same to aid it in
adjusting itself to the valve disk, substantially as described.
12. In a straight way valve, having opposing valve seats and valve disks, the
body having a wedging half ring secured therein with its ends upward, so as to be
interposed between the disks when lowered to force them to their seats, substantially
as described.
13. In a straight way valve, having opposing valve seats and valve disks, with
wedging shoulders on an approximately diametrical line, the body having a wedging
half ring secured therein with its ends upward, so as to be interposed between the
disks when lowered, and to engage said wedging shoulders to force the disks to their
seats, substantially as described.
14. In a straight way valve, having opposing valve seats and valve disks, a self-
adjusting wedging half ring interposed between the valve disks to cause them to set
uniformly, substantially as described.
1000
R. HADDAN,
Herbert Haddan & Co.,
18, Buckingham Street, Strand, London, Agent for Applicant.