US 2165314 A
Abstract available in
Claims available in
Description (OCR text may contain errors)
y 9 R. E. STEVENSON 2,165,314
SNOW PLOW Filed March 12, 1938 I'm 621207" Eoberz" C Stevenson, fly 1 B .4 fiorneya Patented July 11, 1939 UNITEDSTATES PATENT OFFICE Robert E. Stevenson, Indianapolis, Ind.
Application March 12, 1938, Serial No. 195,572
This invention relates to a snow plow and is a continuation in part of my co-pending application for U, S. Letters Patent, Serial No. 119,292, filed January 6, 1937, Patent No. 2,114,641.
A primary object of the present invention is to incorporate means in the snow plow which will permit the plow to ride easily over cracks or slight irregularities in the road or walk way from which the snow is being plowed.
This and other objects of the invention will become apparent to those versed in the art in the following description of one particular form of the invention as illustrated in the accompanying drawing, in which Fig. 1 is a front perspective view of a structure embodying the invention;
Fig. 2, a top plan view;
Fig. 3, a longitudinal vertical section on the line 3-3 in Fig. 2;
Fig. 4, a detail in transverse section on line 4-4 in Fig. 2; and
Fig. 5, a detail in end perspective view of a modified form of runner adjustment.
Like characters of reference indicate like parts throughout the several views in the drawing.
The form of invention herein shown and described is that of a hand operated plow. In this form, there is a leading, cutting or scraping edge l0 provided on a moldboard II. This moldboard is preferably made, for the hand operated form, out of a single piece of sheet metal and is given a gradual curve back from the edge III for a distance and is then curved around upwardly and finally forwardly by its upper edge as best indicated in Fig. 3. The curved portion just indicated is given a general slope to the discharge side of the moldboard, here shown as the right hand side. At the discharge end, the metal is curved around rearwardly and downwardly to provide the flange [2 in the nature of a backturned ear in the upper part and a down-turned runner in the lower part as it approaches the leading edge In.
The other end of the moldboard tapers forwardly to the left hand end of the edge I0 and is then turned around forwardly to give an end closure l3 which extends upwardly to substantially the height of the moldboard II. This closure l3 serves as a vertical cutter to slice off the snow and also serves as means for turning that end of the snow back into the moldboard. This end also will prevent side slippage of the shovel due to thrust of the snow against the moldboard as the plow is pushed thereagainst.
c osu e 3 .5 ca ie q w rd y 01' the leading edge It! by its under side. Some means is then provided in conjunction with this closure [3 to bear against the road or walk way so as to normally lift the edge In slightly above the normal level of that road or walk way. This means may take the form of a roller or wheel l4 mounted on the closure l3 or, it may take the form simply of a runner l5, here shown as a piece of metal welded to the side of the closure I 3. In any event, this means is so located in reference to the edge I 0 that as the plow is pushed forwardly, the means will ride upon the surface being scraped so that when the edge It reaches some variation in the surface, such as the crack it in a walk N, Fig. 2, this means will carry the edge l0 over the obstruction without that edge being abruptly stopped thereby.
This action is further facilitated by forming the edge ill to slope rearwardly from the closure l3 to the discharge end of the moldboard as best indicated in Fig. 2. In other words, the edge In is shifted from a ninety degree position in reference to the operating handle l8 to be inclined rearwardly as indicated. Then when the roller M or the runner l5, as the case may be, rides over the edges of the two segments of the walk I! at the crack or dividing line l6, that means will lift the edge It adjacent the closure l3 and thus start the edge I0 over the dividing line.
The balance of the edge I0 will, of course, slide on over since it is angularly disposed to that obstruction and has already been started thereover.
This feature of including the leading or cutting edge In from a ninety degree position in reference to the closure end l3, in conjunction with the means for carrying that end of the edge I0 slightly above the discharge end of the edge l0 constitutes the invention in the present application.
While I have herein shown and described my invention in the one form as now best known to me, it is obvious that structural changes may be made without departing from the spirit of the invention, and I, therefore, do not desire to be limited to that precise form beyond the limitations as may be imposed by the following claims.
1. In a snow plow, a moldboard, a handle at-- tached to the moldboard, said moldboard having a front scraping edge oblique to the axis of the handle and having a rear roll at a more oblique angle to the axis of the handle,
one end of the moldboard being bent down and back into a curved runner on which the moldboard is rocked, and the other end of the moldboard being bent into a closure and cutter, and means extending forwardly of the scraping edge at the cutting end to bear against the scraped surface and lift the edge over projections in the surface by the rocking of the moldboard.
2. In a snow plow, a moldboard, a handle attached to the moldboard, said moldboard having a front scraping edge oblique to the axis of the handle and having a rear roll at a more oblique angle to the axis of the handle, the end of the moldboard nearest the handle being bent down and back into a curved runner on which the moldboard is rocked, and the other end of the moldboard being bent into a closure and cutter and extended forwardly of the scraping edge to bear against the scraped surface and lift the edge over projections in the surface by the rocking of the moldboard.
ROBERT E. STEVENSON.