US1956295A - Snowplow - Google Patents

Description

A ril 24, 1934.

G. LINDGREN 1,956,295

SNOWPLOW Filed Sept. 18, 1933 ATTORNEYS.

Patented Apr. 24, 1934 SNOWPLOW Gustave Lindgren, Chicago, Ill., assignor of onehalf to ()scar F. Nelson, Chicago, Ill.

Application September 18, 1983, Serial No. 689,907

3 Claims.

This invention relates to manually manipulated implements in the nature of a snow plow or device adapted for use in removing snow from sidewalks, and the primary object of the invention is the provision of an especially efficient plow of this character that may be manufactured at an extremely low cost and without the inclusion of a large number of complicated parts whereby the implement is inexpensive, not likely to get out of order, easy to operate, and performs the duty of removing snow from a given stretch of pavement in a much shorter time than is consumed through the present methods.

One of the important aims of the present invention is to provide a snow plow having as a part of its structure, a diagonally disposed, arcuate blade that is movable about the axis of a pair of wheels which supports the weight of the plow, said blade being disposed to project the collected snow laterally to one side of the path of travel of the implement.

A yet further object of this invention is the provision of an implement especially adapted for the removal of snow from pavements, which implement has a pair of wheels intermediate the ends thereof, while a blade is aiiixed to one end of the frame and a pair of grips are formed at the other end thereof, which combination of parts permits ease of operation and the removal of snow from irregular surfaces with a high degree of efiiciency.

Many minor objects of this invention, including specific structural details embodied in the preferred form thereof, will appear during the course of the following specification, referring to the accompanying drawing, wherein:

Figure 1 is a side elevation of a snow plow made in accordance with this invention.

Fig. 2 is a top plan view of the same.

Fig. 8 is a rear elevation of the snow plow.

Fig. 4 is an enlarged, fragmentary, cross section taken on line IVIV of Fig. 2, and,

Fig. 5 is a transverse, vertical section along the back of the plow blade taken on line V-V of Fi 2.

The preferred embodiment of this invention is illustrated in the drawing and the various parts of the implement shown will be designated by reference numerals, similar parts of the plow shown in the many views being indicated by like numbers.

Frame 8 should be made of tubular metal or some similar strong, light material so as to reduce the weight of the entire implement to a minimum. Frame 8 consists of a pair of spaced-apart, parallel side members 10, each of which may include an inclined portion 12 and an element 14, the former having a grip 16 formed at the uppermost end thereof, while the latter extends forwardly of the lower end of portion 12 to a connection with blade 18. Blade 18 is angled rearwar ly and. arched transversely besides being disposed diagonally across frame 8 so that one end thereof is closer to one grip 16 than the other is close to the opposite grip. In disposing blade 18 in such position, forward movement of the snow plow along a straight line will cause blade 18 to gather and project the snow to one side of said path of travel.

.1 igid connection to blade 18 should be made and such attachment between frame 8 might be effected through the use of an angle bar 20 that is rigidly secured to blade 18 through the use of bolts or similar elements 22. This angle bar 20 is secured longitudinally along the back of blade 18 and the forward portion of element 14 is riveted or otherwise secured to one leg of angle bar 20. A brace 24 connects one side member 10 with blade 18 and the points of connection are as shown in Fig. 2. This brace joins blade 18 at a point adjacent the connection be-- tween left hand side member 12 and blade 18 and brace 24 joins the other side member 12 comparatively close to its grip 16. This brace, or similar ones so positioned, will transmit force to that portion of blade 18 which is always carrying the heaviest load and in this manner of construction part of the force exerted upon the right hand member 12 will be transmitted to that place where it will do the most good and assist in making the operation of the snow plow much easier. A tie rod 28 joins members 12 adjacent grips 16 and when the snow plow is in the position shown in Fig. 1, grip 16 and this rod 26 will be substantially waist-high to the operator.

In order to present one of the most important objects of the invention, it is necessary to position a pair of wheels 28 intermediate the ends of frame 8 at a point behind blade 18, as illustrated. These wheels 28 may be mounted upon an axle 30 so that they are rotatably carried by frame 8 and further to allow movement of blade 7 18 about the axis of wheels 28 when the operator of the plow manipulates grips 16.

In so constructing the snow plow blade 18 is projected forwardly of. wheels 28 and the position of grip 16 determines the position of blade 18. In this manner irregularities of surface may be taken into consideration and in the actual operation of the machine a quick turn to the operators right will carry the blade 18, which may be loaded with snow, directly off of the normal path of travel so that wheels 28 actually serve as a pivotal point about which is carried the weight of both blade 18 and the snow which it may have adhering to its concave surface.

When actually constructing a snow plow embodying the invention herein described, it may be advantageous to employ some durable aluminum alloy for all parts except the scraping edge 32 of blade 18. It has also been found desirable to use solid rubber tires on wheels 28, but such is not necessary or required.

While the preferred embodiment of the invention has been shown and specified, it is understood that many changes and modifications might be followed Without departing from the spirit of the invention or scope of the appended claims.

Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent is:

1. A manually operable snow plow comprising a frame having spaced-apart, parallel side members; a grip formed on each of said members at one end thereof; a blade joining the other ends of said members at points appreciably lower than said grips; and a wheel rotatably afiixed to each side member intermediate said grip and the said blade, said wheels being in opposed relation and behind the blade.

2. A manually operable snow plow comprising a frame having spaced-apart, parallel side members; a grip formed on each of said members at one end thereof; a blade joining the other ends of said members at points appreciably lower than said grips; a wheel rotatably afiixed to each side member intermediate said grip and the said blade, said wheels being in opposed relation and behind the blade; and a brace connecting one of said side members and the said blade at a point adjacent the opposite side member, said blade being disposed diagonally and transversely of the frame whereby one end thereof is closer to the grip and wheel of one side member than to similar members of the other member.

3. A manually operable snow plow comprising a frame having spaced-apart, parallel side members; a grip formed on each of said members at one end thereof; a blade joining the other ends of saidmembersat points appreciably lower than said grips; a wheel rotatably affixed to each side member intermediate said grip and the said blade, said wheels being in opposed relation and behind the blade, one of said side members being extended beyond the wheels a greater dis tance than the other whereby to dispose the said blade diagonally-across the frame; and a brace connecting the longer side member and said blade, said point of connection between side member and brace being adjacent the grip formed by the side member, and said point of connection between blade and brace being adjacent the other of said side members.

GUSTAVE LINDGREN.

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