Патент USA US2114641код для вставки
5TEVENSON SSSSSSS OW Fil ITIN!! 2,114,641 Patented Àpr. 19, 193g UNITED STATES `PA'I‘ENT OFFICE 2,114,641 SNOW PLOW Robert E. Stevenson, Indianapolis, Ind. Application vJanuary 6, 1937,- Serial No. 119,292 3 Claims. This invention relates to the art of plows and particularly to a snow plow, the primary object of which is to throw the snow aside by simply pushing the plow along without having to pick 5 up the snow a shoveful at a time and throw it aside. A further important advantage of my invention lies in the fact that it may be made at a comparatively low cost and is light in weight so that it may be operated without undue fatigue. A still further advantage of my invention is that it may be easily operated over rough walks and the like. These and other objects and advantages will become apparent to those versed in the art from the following description of one particular em bodiment of my invention as illustrated in the accompanying drawing, in which Fig. 1, a perspective view of a preferred form of my plow; Fig. 2, an elevation of the side next to the 20 operator; and Fig. 3, a top plan view. Like characters of reference indicate like parts throughout the several views in the drawing. I form the plow share 9’ from sheet metal 2 Ul of the desired thickness to have a forward scrap ing or cutting edge Il’. From this edge II', the metal is carried rearwardly and around upwardly to form in effect a mold board I0’. The metal is carried back from the edge Il’ to form a hat 30 or plane portion having a rearwardly extending length a’ on the one side, here shown as the right hand side, greater than -the length b’ on the opposite side and the curved portion extend ing rearwardly and upwardly and around for 3 Ul wardly therefrom forms the part I0’ which will collect and guide the snow to one side of the plow. A very important feature of the invention is that the forward edge Il’ is at right angles to 40 the line of travel of the plow as it may be pushed along over the surface being cleaned. In other words the edge I I’ is at right angles to the handle I2 which is secured to the plow by means of any suitable bracket I3 attached to the plow on its 45 rear side substantially at the junction of the upwardly curving portion with the forward plane portion. I have discovered that contrary to the usual practice in plowing operations, the plow is most effective by having this forward edge II’ 50 formed at right angles to the handle I2 rather than being sloped to one side. In fact it has been my experience that sloping the forward cutting edge gives very unsatisfactory performance and causes the plow to slip sidewise and not main 55 tain a forward course. Another feature of my invention resides in the fact that I provide means for permitting the plow to be pushed along over obstructions by rocking the handle I2 downwardly without havj ing to lift the plow. In the form of my invention shown in Figs. 1-3, inclusive, the upwardly extended rear portion III’ is extended by suitable curves to the cutting edge Il’ at the narrow end b' to keep the snow from escaping at that end and, aided by the curves, to cause the snow to roll and slide to ward the opposite wide, discharge end a', and to increase the clearance and facilitate the dis charge of the snow from the plow, I curve the rear portion I0’ rearwardly and also curve the 15 adjacent lower or plane surface downwardly for the same reason. To give the cutting edge Il’ a better contact or bite against the surface of the side-walk, I form a depending flange or runner I8 at the end a', gradually increasing in width from nothing at the edge II’ to approximately an inch near where the curve for the rear upwardly ex tended portion IU’ begins, and there this runner merges into the adjacent curve of the plane. The flange I8 thus gives the proper tilt of the plane to cause the edge II’ to bite and does not ob struct the discharge of snow. By forming the plow to have a forward cutting edge at right angles to the direction of travel of the implement and having a mold board across the rear of the plow in a sloping position in ref erence to the line of travel, I have provided an unusually efficient tool for shifting to one side materials from an area to be cleaned by simply pushing the plow straight ahead. The peculiar 0 5 formation of the plow eliminates any tendency of it to be shifted sidewise as the snow or the ma terial is being carried laterally of the plow under the forward movement thereof. Where the snow is frozen or tramped, a short backward and for ward movement will usually serve to loosen it for easy removal by the plow. While I have herein shown and described my invention in the one form as now best known to me, it is obvious that structural variations may be made without departing _from the spirit of the invention and I therefore do not desire to be limited to this precise form beyond the limita tions as may be imposed by the following claims. 50 I claim: 1. A plow formed to have a forward scraping edge from which the plow extends rearwardly into an upwardly curved portion which is angu larly disposed in relation to saidvedge, and fur 55 2 2,114,641 ther formed to have a runner on which the plow may fulcrurn to lift said edge, said runner com along the plane portion of the plow and then ñares outwardly at the curved portion to in prising a forwardly tapering member extending from the cutting edge toward the discharge end of the plow. 2. A plow formed to have a forward scraping edge from which the plow extends rearwardly crease the area of discharge. into an upwardly curved portion which is angu larly disposed in relation to said edge, and 10 formed >to have a plane portion between said edge and said curved portion and further having the end of the angularly disposed portion nearest the scraping edge curved to direct the snow to ward the other end which is the discharge end of the plow and having the discharge end formed with a tapered ñange which extends downwardly and widens rearwardly from the cutting edge 3. A plow formed to have a forward scraping edge from which the plow extends rearwardly to a ñanged portion and formed to have a plane por tion between said edge and said flanged portion and further having the end of the hanged por tion nearest the scraping edge hanged upwardly across the plane to prevent escape of snow at 10 that end of the plow and curved to direct the snow toward the other end which is the discharge end of the plow, said discharge end being ñared outwardly to increase the area of discharge and flanged downwardly into a runner tapering to 15 the forward scraping edge. ROBERT E. STEVENSON.