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Патент USA US2404288

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Filed Feb.- 9, 1944y
Patented July 16, _1946
‘ 2,404,288V
Elmer E. Harper, Monrovia, Calif.; Esther Pardee J
' ’ Harper-,_executrin of said’Elmer E. Harper, de
' ceased
.Application February 9, 1944, Serial No. 521,597
1 Claim.
y The present inventionpertaîns to valves and
valve mechanism, and theprimary purpose of the
invention'is to provide an improved type of pack
less'valve'construction together with appropriate
operating connections adapted to function as
hereinafter described.
view, representing a section taken on the line
2-2 of Figure 1;
Figure 3 is a transverse sectional View, being
asection taken on the line 3_3 of Figure 2; and
Figure 4 is an' elevation showing one end of
‘the unit.
i Accordingly one of the principal objects in View
is to devise a construction in which valve stem
packing is eliminated by the use of a combination
of tube and rod elements so arranged as to de 10
velop a torque action in effecting the operating
or control functionas required, .This result may
be‘accomplished by a combination of the tube
and rod elements arranged one inside the other,
whereby the rod element operates as a direct me
proved .construction is illustrated as comprising
a valve bodyor housing l0 forming an"> interior
valve compartmentor chamber l2, at one end of
which is provided an outlet or dischargeñtting
lll,A and adjacent to the same end of the com
partment is also provided -a suitable inlet fitting
I6, illustrated as held in place by screws ,|8
see Figure fl.
dium for transmission of the control action while
the outer tube (by being connected with the rod
at one Yend but independently ñxed or anchored
Referring now to the drawingfin detaiLthe im
The inlet fitting I6 is formed with a sleeve 20
projecting inside the chamber or. compartment
l2 and terminating in a valve seat 22 fora nee
at its other end) opposesthe rotation of the rod,
die valve 24 which is mounted vaxiallyin alvalve
thereby introducing its torque action as a factor 20 spool 26 and held in place therein byïm'eans of‘a Y
inthe operation, in an _effective manner.
somewhat> loose connection' with a >pin 2T ;"‘ and,
" In v_carrying out the invention, it is a further
as shown,_the axial bore of the spool 26 is .slightly
object to provide a _construction ofthe character
oversize for the valve element 24 to permitflimited
indicated in which the operating or control func
lateral play of the needle valve forvalve-seating
tion maybe transmitted in either direction, de
pending uponthe type of duty to which it is to
be~_applied._` The construction is further adapted
One end of the valve spool 26 is slotted and
engages slidingly with the end of the sleeve 20,
for eithery manual or automatic control or regu
while the opposite end of said spool is reduced
and mounted slidingly ina vertical slot 28 in the
It is also an object of my invention toprovider 30 side wall of the housing |0_;_ and above and below
a simplified and yet strong and sturdy construc
this end of the spool a pair of adjusting screws
tion of relatively few parts adapted to be assem
` 29 may be employed for maintaining the spool in
bled together _and operated in a foolproof man
horizontal alinement with the sleeve 2U, and
ner.v To'this end the construction is comprised
moreover the horizontal depth of the slot 28 is
of operating connections adapted to withstand
sufficient to permit .the longitudinal sliding move
very heavy ,external pressures while sacrificing
ment of the spool _as required `for the opening
no advantages as to accuracy and sensitiveness
and closing action of the valve (see Figure 3).
of operation.'
The improvements are intended to be especial
ly useful in connection with operations involving
thehandling of corrosive substances, such as in
the feeding of chlorine materials and the like,
The valve spool 26 is provided with one or more
annular slots or grooves BIJÉthel Ydrawing illus
though in no wise limited to such operations.
Withthe foregoing general object in View, as
well as minor objects as will hereinafter appear,
the invention will now be more specifically de_
scribed by reference to the accompanying draw
ing, illustrating a practical form of apparatus
which has been found satisfactory for the em
bodiment of my proposed improvements, after i
which those features and combinations deemed
to be both novel and patentable will be particu
larly set forth and claimed.
In the drawing
_ yFigure l is a top planl View showing a packless
valve unit embodying the present improve
ments-,certain portions Aof the housing structure
being “broken away to‘ disclose parts on the in
Figure 2 is a vertical longitudinal sectional'
trating two ofsuch slots or grooves, which' are
spaced a suitable distance apart for separate en
gagement with key lugs or lingers 32 formed on
blocks' or brackets 34 which are drilled to fit over
the _ends of a pair of torque tubes 36. Each of
the torque tubes 36 is equipped with a rod or
shaft 38 having free fitting relation Within the
tube and secured thereto as well as to the corre
sponding block or bracketl 34 _by a common pin 40.
As illustrated in Figure 3, the inner end of each
tube 35 is plugged with a sealing material 42 and
removably journaled in an opening 43 in the end
wall ofthe housing I @,and its opposite end is
securely and permanently anchoredA as_well'as
sealed within an opening 44 in `a removable endl
vplate 4S forming the opposite end wall of the
chamber or compartment `|72 and held in'place by
suitable screws _41,v
' f
The r’ods or- shafts 38 project out and beyond
the outer ends of the tubes 36,_and are secured
to a crank assembly 48 which is provided with
. 4_
is a decided advantage over ordinary valve con
split clamping lugs 5i) and screws 5| for that,`
structions using packing around the »valve stem
purpose, as illustrated in Figure 4. The top por
friction with` highly yvariable
tion Vof the» crank _assembly includes a bar or
effects fand. in many -cases preventing. 4free re
link pivotally`ïconnected with the crank arms
sponse of the valve to the nexternal actuating
as shown in Figures 1 and 4 and having an open
ing 52 for removable engagement with one endg‘j _ means. For this reason the entire absence of
such packing in the improved construction ren
of a pivoted operating lever 54 for which a ful
ders the same especially suitable for automatic
crum pin 56 is provided on the upper face of'ethe`
housing l0, said lever extending longitudinally l . and proportional control applications.
The exampleY of construction illustrated in the
over the'housing and havingr its Vopposite enden-L
drawing showsv a plurality of-torque tube and
gaged by ay coilspring element 58 which tends
shaft combinations in parallel, but it is to be
` Y normally to transmit a valve-closing movement
to said lever; and for `counteracting said spring* " understood that a single tube and rod or shaft as
action the opposite side of the lever is engaged, l sernloly` may be employed, if desired, when the
operating conditions are not Ísevere, or too great
by the tip of an operating or adjusting screw 60
stresses are. not imposed. The combination of
threaded through an. upright bracket element. 62,.
a plurality of such assemblies in anyY required
A’keeper member 64 extending loosely through
provides a flexible means of meeting any
an. opening 65 inthe lever 54 andV through the
operating'V conditions in a most practical man
coil spring .58 is anchored at its opposite ends
in the bracket element 621and another bracket zo
Incidentally it may be pointed out that> as
element 66 on the top of the housing member l 0
1 and.4.
plate V‘lllis secured over’said opening. by means
action,. it is immaterial in whichdirection the
transmitting action is taking place, and that
25 the direction may be reversed under some condi
tions, as where. the exterior .parts might be em
ployed in connection-with indicating means ac
tuated from within the housingchamber to de
of suitable screws 12, as illustrated in Figures
regards the transmitting function of the torque i
' A top inspection opening 68 is provided .over
the sliding valve spool 26, and a removable cover
Itjwill be understood that by Vmeans of the
note movements of a float or the like inside said
foregoing construction the> movements of the
lever 54 will be transmitted through the crank 30
The, materials employed in the foregoing con
assembly 48 to the tube and. rod elements 36
struction will be such. as. are appropriate for the
and 38, in which aA torque. or twisting action
conditions. to.. be encountered, and where corro.
is produced, with theresult that some-rotation of
sivev substances are tovvbe handled the construe.
the Ykey or vlug- elementsv 32 is likewise produced,
thereby effecting a sliding longitudinal movement 35 tion will be of-v sucha vcharacter as to withstand
the corrosive action o_f such materials. Accord
ofthe valve.V spool and its needle valvev 24. The
ingly, the torque tube may be of hard silver un-.
arrangementdescribed is that which is adapted
der some conditions, or simply of» plastic mate
to produce opening movement of the valve as
rial under other conditions; the rod or shaft
the lever 54 is moved against the pressure of
the spring 58; and since said spring tends to seat 40 may be- ofbronze, or silver-plated steel construc
the valve in closed position it is apparent. that ' tion, and theother yinterior .partsmay be of suit
able materials having non-corrosive properties
by adjusting the screw. 60 in counteraction -to
where necessary.y VThe casing or housing Ill may
said spring v`the valve can be> operated either
-be of cast brass, or of plastic construction,'or
intoclo'sed position or set and maintained in
a cast iron. jacket may be used having a lining
open or any given. partly open position, as may
of an appropriate material.
jbe required. In addition to being manually con
Fromthe foregoing, therefore, it will be. clear
trolled in this manner, it is. also apparent that .
the valve maybe operated entirely automatically
by. completely retracting (or dispensing with)
that I- have devised a practical and highly effl
connection,V such as indicated at, 15 in Figure 1,
to the operating .lever 54 at a suitable point, for
operating the valve in `conjunction with other
control mechanism,as is often required in. plants
employing chemical feeding devices (as. in water
purificationV plants) for vwhich the present im
provements are particularly well adapted.
embodiment of the improvements may of course
be varied toy adaptthe same to meet varying con
ditions and requirements of operation; accord
ingly I desire to'be understood asgexpressly re
cient construction for carrying out the stated
the screw and attaching> a conventional control 50 purposesof my invention, and that the described
serving the. right to make whatever changes or/
modifications mayV properly be deemed, to fall
within the spirit» and scope of invention as
deñned in the appendedy claim.
It is obvious that a packless valve structure «
certain prior packless valve constructions, such
as those of theV diaphragm type, as illustrated
comprising, a. movable element, an operating
in .my Patent No. 2,293,647, dated August 18,
1942. The` present improved device is not only
simpler but stronger construction, and is adapted '
to operate under much heavier externalpressures
by virtue of the combination> torque tube and in
ternal rod’or shaft insuring against any collapse
of such transmitting elements while at the same
time maintaining a high degree of sensitiveness
in the control function..
member, and torque transmission means compris'
ing a plurality of torque assemblies in parallel
65 relation and each comprising` a torque tube and
shaft rod enclosed thereby and connected atcor
responding ends and also >operatively engaged
with said movable element. for jointly actuating
the same, the other ends of the tube and. rod
70 .of each of said assemblies being respectively an
Moreover the improved method of. operation
provides a substantially frictionless transmission .
of the operative action .to the valve member; this
HavingA described >my invention, what I claim
and desire to secure by Letters-Patent is:
Actuating means of the character> described
of this type affords decided advantages over
' chored in fixed positionrand. connectedwith said
operating member. .Y
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