US551647A - Propeller-wheel - Google Patents

Description

(No Model.) 7 2 Sheets-Sheet 1. -E. J. PARKER.

PROPELLER WHEEL.

No. 551,647. PatentedDecl 17, 1895.

1727622502? iglzbzavflwiier E LISIIA J. PARKER, OF DALLAS, TEXAS.

PROPELLER-WHEEL.

SPECIFICATION forming part of Letters Patent No. 551,647, dated December 17, 1895.

Application filed August 24, 1895.

To all whom, it may concern:

Be it known that I, ELIsHA J. PARKER, a citizen of the United States, residing at Dallas, in the county of Dallas and State of Texas, have invented new and useful Improvements in Propeller-VVheels, of which the following is a specification.

My invention relates to propeller-wheels for steam and other vessels, my purpose being to provide 'a propeller for steamships, or for smaller vessels driven by steam or other power, the propeller having such construction as to give an increased speed to the vessel at an expense of less power than is usually expended. It is my aim, in other words, to provide a propeller by which a maximum speed may be obtained without a proportionate increase in the motive poweremployed. This result I obtain by providing a construction which will avoid the lateral resistance of the water and enable the power of the propeller to be applied in the line of movement of the vessel, instead of being diffused, more or less, in all directions. i

My invention consists, to these ends, in the novel features of construction and in the new parts and combinations of parts hereinafter fully explained and then particularly pointed out in the claims.

To enable those skilled in the art to which my invention pertains to fully understand and to make and use the same, Iwill now describe said invention in detail, reference being had for this purpose to the accompanying drawings, in which- Figure 1 is a perspective view of a propeller constructed in accordance with my invention. Fig. 2 is a view in front elevation, showing the working face of the propeller. Fig. 3 is a central vertical section of the parts shown in Fig. 2. Fig. 4 is a view of the same in edge elevation, showing the lines of attachment of the buckets or wings of the propeller to the outer band. Fig. 5 is a .detail perspective of a portion of the outer series of wings, a part of the external band being broken away. Fig. 6 is a view of one of the wings detached from the wheel. Fig. '7 is an edge elevation of the same.

In the said drawings, the referencemumeral 1 indicates the hub or sleeve of the propeller, by which it is mounted 011 its shaft.

Serial No. 560,374. (No model.)

From the outer or cylindrical face of this hub project, at equal intervals, arms or supports 2, wl1ich afford attachment to the first or inner series of wings or buckets 3. These wings, like all others employed in my propeller, consist of plates of metal which are perfectly flat throughout their entire extent, the pitch or angle at which they arearranged being determined by the size of the vessel and the speed to be attained.

The first or inner series of wings 3 are of relatively short length and terminate at a band or circular shell 4,'which is concentric with the hub or sleeve. The edges of the wings 8 are secured strongly to the inner face of theband 4 in any suitable manner, the preferred method being to turn the edge of the wing at a right angle and bolt or rivet throughlthe same and through the band. I may, however, cast the whole structure in one or more parts-as, for example, in halves or other divisional parts-and unite the said portions in any suitable manner.

Between the band or shell 4 and a concentric band 5 I arrange a second or intermediate series of wings or buckets 6, of somewhat greater dimensions, both in breadth and length, each wing being, like the wings 3,

perfectly flat throughout its whole extent.

The wings 6 are secured to the bands or shells 4 and 5 in the manner already explained, and one edge of each of the wings 3 is substantially in the same line with the corresponding edge of one of the wings 6.

It will be noticed from Fig. 3 that by rea son of the increased dimensions of the intermediate series of wings 6 the band 5 is of greater width than the band 4, and the distance separating the two bands is greater than that between the sleeve 1 and the band 4.

A third series of wings or buckets 7 is arranged between the band or shell 5 and an external band 8, concentric with the sleeve 1. The external series of these wings is preferably double the number of the intermediate wings 6, and thus the edges of the alternate wings in the external series coincide with the radial lines of the edges of the second series. Moreover, throughout both series of wings the edge of one lies substantially in the same axial plane with the alternate edge of the next succeeding wing, as shown in Figs. 3, 4,

and In other words, a plane intersecting the bands l, 5, and S and the axis oil. the propeller will coincide with the edge of one wing between the bands 5 and 8, and also with the edge-of the adjacent wing between. the same bands, but between their opposite edges. The same arrangement also characterizes the intermediate series of wings S.

The external series of wings are also oil"; somewhat greater width and length than the intermediate series, and thus the width of the external shell 8 and the distance separating it from the band 5 are greater than the corresponding dimensions 01' the band 5 and the space between it and the band 4..

It should be noted that the intcri'nediate series of wings may be four, or even more, in number, according to the size of the wheel. So, also, the outer series of wings will be correspondingly increased.

I usually place the flat wings in each series at an angle of inclination of about thirty degrees, but this angle may be varied. As the outer series travel at greater speed than the inner, I may, in some cases, arrange the outer series of wings at a greater or less angle than that of the inner wings, these matters being regulated by the weight of the vesschtl 1e speed of the wheel and the speed to be attained by the vessel.

By my invention I can. utilize, or render officient, at least sixty per cent. of the motive power developed, which is largely in excess of the power which .is utilized under present constructions. Moreover, by the manner oil;- in- 1 1. A propeller for vessels and boats consistinof a plurality of concentric series of wings, or buckets, separated by bands, or shells, the forward edge of one wing being substantially in line with the rearward edge of the adjacent wing, substantially as described.

53. A propeller consistingoi"v a hub, or sleeve, having flat wings, or buckets mounted thereon, a concentric band to which the ends of said wings are attached, an intermediate series of flat wings between said bands and a second, concentric band, and an external series of flat wings between the latter band and an external, concentric band, the wings in the intermediate and external. series being olf greater dimensions than those in the adjacmit, inner series, snbstaiitially as described.

In testimony: whereof I have hereunto set my hand in n'esence of two subscribing witnesses.

ETJSIIA .l'. PARKER.

\Vi tn esscs:

Amman. II. Noinns, Tues. A. Gnnnx.

Images