US1218032A - Non-heating valve hand-wheel. - Google Patents

Description

D. R. YARNALL.

NON-HEATING VALVE HAND WHEEL.

APPLICATION FILED SEPT. 8, I916.

1,21 8,032. A Patented Mar; 6, 1917.

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DAVID EoBEET YAENALL, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR To NELsON vALvE COMPANY, 0E CHESTNUT HILL, PHILADELPHIA, PENNSYLVANIA, A COR- POBATION OF PENNSYLVANIA.

NON-HEATING VALVE HAND-WHEEL.

To all whom it may concern:

Be it known that I, DAVID ROBERT YAR- NALL, a citizen of the United States, residing at 316 Preston street, Philadelphia, in the county of Philadelphia a and State of Pennsylvania, have invented a certain new and useful Non-Heating Valve Hand- Wheel, of which the following is a specification.

My invention relates to hand-wheels for steam valves in which it is desirable to attain a maximum of strength with thorough reliability and as much heat insulation as possible.

The purpose of my invention is to provide a pair of radially arranged annular rims of different diameter spaced by a relatively thin central perforated web.

A further purpose of my invention is to make the outer part of the wheel of girder section with the head or flange upon the inside smaller than upon the outside.

A further purpose of my invention is to supply an annular heat distributing ring, or annulus connected with the hub and to provide a larger grasping ring thereabo-ut, spaced therefrom by a circumferent'ielly interrupted web.

Further purposes will appear in the specification and particularly in the claims thereof.

I have preferred to illustrate my invention by but one form thereof, selecting one which in practice has proved to be light, strong, a good heat insulator and inexpensive in manufacture and which at the same time well illustrates the principles of my invention.

In the drawings, similar numerals of reference indicate like parts.

Figure l is a top plan view of the preferred embodiment of my invention.

Figs. 2, 3 and 4 are sections of Fig. 1 upon lines 2-2, 3-3 and 4l, respectively.

The hub 1' contains the usual tapered stem hole 2 and supports the spokes 3. These spokes are shown as extending in radial planes, but at an angle with the radii within these planes, as best seen in Fig. 2, giving room for the valve stem nut below the level of the hand hold.

Instead of connecting the spokes directly with the outer rim, I connect them with an inner rim or annulus &, of preferably ellipti- Specification of Letters Patent. I Patented 131 6 1917.

Application filed september s, 1916.

Serial No. 118,986.

cal cross section and with the major axis of the ellipse (its depth) parallel with the hub axis. I give the annulus l considerable body for the purposes of providing strength and of distributing the heat and giving off a large proportion of the heat conducted to it by the spokes 3.

In order that the heat from the annulus 4 may affect the user of the valve as little as possible, I surround it by an outer annulus or rim 5, whose depth (parallel with the axis of the hub) is greater than the depth of the annulus 4 so that the relative projection of the faces of the outer annulus beyond the inner annulus will protect the hands of the user from engaging the more highly heated inner annulus. The two annuli or rims are connected by a. preferably radial web 6 perforated as at 7. The outer rim is also shown as of elliptical cross section and the two rims may be considered as forming heads or opposltelyextendmg flanges for the web, glvmg a girder cross sectlon.

I show a large number of perforations in the web to reduce the heat conductivity between the annuli 4 and 5, while maintaining sufficient strength between.

To improve the grasping qualities of the having two co-axial, radially-disposed'anside the annulus in radial line therewith having greater depth axially of the hub than the annulus and an apertured web connecting the annulus and rim.

3. In a valve hand wheel, a valve wheel having two coaxial annuli of different depth, axially of the wheel, connected by an apertured web to form a beam section, that annulus which is of greater depth being of the larger diameter and having its outer edge extending farther axially away from the valve than the annulus of'lesser depth and diameter, in combination with a hub and spokes connecting the hub and inner annulus.

DAVID ROBERT YARNALL.

Copies ofthis patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. C.

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