Steam and Air Valve Operator. Page: 2 of 3
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UNITED STATES PATENT OFFICE.
DAVID H. GREESON, OF BOWIE, TEXAS, ASSIGNOR TO GREESON, BURNETT
& CO., OF BOWIE, TEXAS.
STEAM AND AIR VALVE OPERATOR.
No. 843,593. Specification of Letters Patent. Patented Feb. 12, 1907.
Application filed April 20, 1906. SerialiNo. 312,850.
To all whom it may concern: ! the gear is secured a second rack 16, the op-
Be it known that I, DAVID H. GREESON, a erating -faces of these racks being spaced 55
citizen of the United States, residing at i from each other radially with respect to the
Bowie, in the county of Montague and State gear-wheel. The frame is further provided
5 of Texas, have invented a new and useful with a short sh aft or stud 18, on wI.ich is
Steam and Air Valve Operator, of which the loosely mounted a double segment, r aving
following is a specification. two sets of rack-teeth 19 and 20, which are 6o
T: is invention relates to valve-operating arranged, respectively, for engagement by the
mechanisms, and has for its principal object racks 15 and 16. Secured to the double seg-
o to provide a mechanism of simple construc- ment 19 is an arm 21, and to the lower end of
tion, whereby the rotative movement of one this arm 21 is secured a valve-operating arm
element may be transformed into reciproca- 22, which may be guided in any suitable 65
tory movement of another element. manner and through which reciprocatory
A further object of th~e invention is to pro- movement is imparted to a valve or other
t5 vide a mechanism of this type in wb ich a suitable mechanism.
double gear-segment is arranged to be en- During the operation of the device, the
gaged in successive order by a pair of racks valve-rod being at full stroke to the left, the 70
through which positive movement will be gear 12 is rotated at any desired speed and
transmitted to the segment alternately in the rack 15 is first brought into engagement
20 opposite directions, the segment being ar- with the upper teeth 19 of the segment, ro-
ranged to assume a normal position of rest tating the latter to the position shown in
between its intervals of movement. Fig. 2 and moving the arm 21 rearward 75
With these and oter objects in view, as through an arc of somewhat more than one
will more fully 1: ereinafter appear, the inven- hundred and twenty degrees, and after the
25 tion consists in certain novel features of con- final disengagement of the rock with the
struction and arrangement of parts, herein- teeth 19 the parts are held in the position to
after fully described, illustrated in the ac- which they have been moved by friction or 80
companying drawings, and particularly other force acting on the valve or its rod.
pointed out in the appended claim, it being The teeth of the rack 16 will then engage the
30 understood that various changes in the form, teeth 20, and the segment will be rotated in
proportions, size, and minor details of the I the opposite direction to the position indi-
structure may be made without departing cated in Fig. 3, moving the arm 21 to its 85
from the spirit or sacrificing any of the ad- initial position and completing the full stroke
vant ages of the invention. of the valve.
35 In the accompanying drawings, Figure 1 is The apparatus may be employed to ad-
a sectional elevation of a valve-operating vantage as a mechanical movement for trans-
med: anism constructed in accordance with forming rotative into reciprocatory move- 90
the invention. Figs. 2 and 3 are similar ment and is of especial value in the operation
views of portions of the same, showing parts of valves of fluid-pressure-operated mechan-
40 in different positions. isms of different types.
Similar numerals of reference are em- The apparatus is found of especial value in
ployed to indicate corresponding parts the operation of steam cotton-presses. Un- 95
throughout the several figures of the draw- der ordinary conditions the pressman must
ings. stand very close to the press and in a position
45 The working parts of the mechanism are that is very injurious to health. By employ-
supported in a suitable frame 10, having hing this mechanism the controlling-valve of
bearings for a horizontally-disposed shaft 11, the press may be operated by the ginner, X00
on which is mounted a gear-wheel 12, and in who stands generally at a considerable dis-
ti: e present instance tI is gear receives motion tance from the press proper.
5o from a pinion 13, that is mounted on a shaft I claim-
14, arranged parallel with the shaft 11. To In apparatus of the class described, a dou-
the shaft 11 is secured a small segment or ble-segment gear, the segments being of the 105
curved rack 15, and to the outer portion of same radius, a valve-operating arm project-
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Greeson, David H. Steam and Air Valve Operator., patent, February 12, 1907; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth509288/m1/2/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.