US2530856A - Snow plow - Google Patents

Description

Nov. 21, 1950 H. D. CALLAHAN 2,539,856

SNOW PLOW Filed Jan. 22, 1948 l I I 1 9 l3 l4 I'l l6 /8 I n 37 41 w 4% 1w 1| u 4 29 26 T 2 32 I LL U 2 16 /o I: 23 I f l5 /2 I \I I: L Fig 3 Horace D. Callahan INVENTOR.

BY WM 153M1 Patented Nov. '21, 1950 r orrice SNOW PLOW HoracetD Callahan, Hobart, Ind.

Application January 22, 1948, Serial No. 3,745

4 Claims. 1

The present invention relates to certain new and useful improvements in scrapers such as are adapted to be maneuvered by a walking attendant and thus manually powered, whereby to: provide a structure which may be used as. a plow for removing snow from sidewalks; garage driveways, gravel and stone paths and similar surfaces.

The invention relates to a field of endeavor which is appreciably active. 'I'herefore,Iam aware that it. is old in the art to utilize a mobile frame, to support a scraping blade. thereon, and to provide handle bars' for pushing the support whereever necessary and maneuvering the scraper blade according to the lay of the land and obstructions to be met during the snow removal procedure.

In carrying out the principles of the instant invention I utilize a structure which is possessed, Iv believe, of special adaptations and" refinements which, collectivelyfunctioning, serve to attainv the desired ends. with greater satisfaction and efliciencyr Since, in many sections of the country, snow removal jobs are. occasional affairs, the average man. of the house requires,v it is submitted, that which may be handled with convenience and without too much, physical exertion and. effort. Therefore, it is an object of the. present inventi'on, toprovide a handle equipped readily maneuverable and wheel supported truck, this having. a scraper blade on its forward portion and means being provided whereby the blade may be conveniently angled in relation to. the line. of draft of the truck, to facilitate. snow gathering and pushing results.

More particularly, novelty is predicated upon an adj'ustabl'y mounted scraper blade which is provided with a segmental rack to accommodate a latch lever carried by the truck, the lever being so designed, mounted and arranged that it may be readily utilized to insure best results with a minimum of inconvenience to the user.

In the accompanying drawings, wherein like numerals are employed to designate like parts throughout the views Figure: 1 is a perspective view of a snowremoving plow constructed in accordance with theprinciples of this invention;

Figure an a longitudinal section taken centrally through the structure seen in Figure 1, the section being on the line 22 of Figure 3.;

Figure 3 is a top plan view; and,

Figure 4 is an enlarged fragmentary detail section on the line 44' of Figure 3, looking in the direction of the arrows.

Referring now to the drawings by distinguishing reference numerals the truck comprises a wooden or equivalent frame denoted by the numeral 5 and embodying longitudinal side members B- and 1 and transverse forward and rear connecting members 8 and 9. Auxiliary longitudinal frame members are mounted within the confines of the main frame and denoted by the numerals l0 and these assist in supporting an axle H and ground contacting and transporting Wheels i2 mounted on said axle between the respective longitudinal frame parts 6, T and I0 respectively. Incidentally, the numerals l3 designate handle bars hingedly connected to the axle and situated in close parallelism between the longitudinal frame members I0, said handle mem bers being provided with hand grips I4. On the forward end portion of the truck frame I provide a suitable V-shaped adapter which comprises converging members l5 and spaced parallel members It. The vertex portion of the adapter is provided with hinge means ll' connected with the central portion of the scraper blade l8. Incidentally, the blade has upper and lower longitudinal flanges l9 which serve to provide effective collecting and scraping results. The rear side of the blade, adjacent the lower half portion is provided with a segmental strap 20 having a plurality of circumferentially spaced keeper notches 2!. The notched strap functions as an adjusting rack and its intermediate portion opcrates shiftably through clearance notches 22 provided in the adapter 'members l5. At this stage I call attention to a J-shaped latch-lever 23 whose end portion is pivoted as at 24 between the members IS. The handle portion 25, provided with a hand grip 26, is workable in a slot or notch 28 provided in the transverse frame member 8 as shown in Figure 2. A coiled spring 29 is attached to the shank of the lever and also to the cross-piece 8 and this serves to hold the V retentive portion of the lever in the keeper notches 2!, in an obvious manner. By locating the handle and hand grip in the frame 5 and at the elevation seen, and close to the handle bars, it is conveniently situated for accessible and handy usage.

1 next earl attention to a caster yoke (it! (see Figure 2) having a caster wheel 3! and swivellymounted on an assembling and regulating rod 32 This rod is slidable and turnabl'e in an aperture provided therefor in the spider 33. The upper screw threaded end of the rod serves to accommodate an adjusting nut 34 (see Figure 4) which nut is provided with a groove 35 to accommodate a set screw 36, whereby to swivelly anchor the nut between the adapter members 16. The nut is provided with a finger grip 31 for convenience of operation. It is obvious, therefore, that by turning the nut, the rod 32 is raised and lowered to elevate or lower the caster and to thus correspondingly lift and lower the scraper blade to clear high and low spots occurring in pavements and the surface to be traversed, in an obvious manner.

Briefly, the invention is characterized by a wheel supported handle bar equipped frame forming a truck, this having a V-shaped fore portion constituting an adapter on the apex of which the scraper blade is hingedly mounted for swinging in a horizontal plane. Convenient adjusting means is provided for angling the scraper blade so that it has some four or five positions in respect to the longitudinal line of draft of the truck. A careful consideration of the foregoing description in conjunction with the invention as illustrated in the drawings will enable the reader to obtain a clear understanding and impression of the alleged features of merit and novelty sufficient to clarify the construction of the invention as hereinafter claimed.

Minor changes in shape, size, materials and rearrangement of parts may be resorted to in actual practice so long as no departure is made from the invention as claimed.

Having described the invention, what is claimed as new is:

l. A snow plow of the class described comprising a portable truck, said truck being of box-like form and including a rectangular frame having longitudinal side members and connecting transverse end members, together with central longi tudinal members between the end members and side members, a V-shaped adapter on the forward portion of said frame including spaced parallel coacting members, a latch-lever having an end portion pivoted between the last named members, a shank portion located between the second named longitudinal members of the frame and terminating in a hand grip, a scraper blade hingedly mounted for swinging on the vertex portion of said V-shaped adapter, said scraper blade being provided with a semi-circular notched strap forming a rack bar, said latch-lever being selectively engageable with the notches in said rack bar, supporting wheels for said frame, and handle bars connected with said frame.

2. In a walking attendant handled and steered snow plow of the class shown and described, a wheel supported frame constituting a truck and having a forwardly projecting V-shaped portion,

a horizontally disposable scraper'blade hingedly mounted intermediate its ends on the apex of said V-shaped portion, a segmental rack having end portions rigidly secured to the rearward side of said blade, the lower edge portions of said V-shaped portion having clearance notches and the intermediate portion of said rack being located in and shiftable back and forth through said notches, said rack being provided with circumferentially spaced keeper notches, a latch lever pivoted at one end on said V-shaped portion, having an intermediate part releasably engageable with said keeper notches and having, in addition, a handle portion located for operation within the confines of said frame, spring means attached at one end to said latch lever and anchored at its opposite end on said frame, and handle bars connected to the trailing end portion of said frame for pushing and otherwise maneuvering the frame.

3. In a Walking attendant handled and steered snow plow of the class shown and described, a wheel supported frame constituting a truck and having a forwardly projecting V-shaped portion, a horizontally disposable scraper blade hingedly mounted intermediate its ends on the apex of said V-shaped portion, a segmental rack having end portions rigidly secured to the rearward side of said blade, the lower edge portions of said V-shaped portion having clearance notches and the intermediate portion of said rack being located in and shiftable back and forth through said notches, said rack being provided with circumferentially spaced keeper notches, a latch lever pivoted at one end on said V-shaped portion, having an intermediate part releasably engageable with said keeper notches and having, in addition, a handle portion located for operation within the confines of said frame, spring means attached at one end to said latch lever and anchored at its opposite end on said frame, handle bars connected to the trailing end portion of said frame for pushing and otherwise maneuvering the frame, a nut swivelly mounted in the crotch of the stated apex portion, a rod situated in said crotch portion adjustably mounted in said nut, and a caster on the lower end of said rod adapted to rest upon the surface being traversed.

4. A snow plow of the class shown and described comprising a wheel-suported frame constituting a portable truck, said frame having longitudinal side members and connecting transverse end members and longitudinal members between the end members and side members, a V-shaped adapter on the forward portion of said frame including spaced parallel coacting members, a latch lever having an end portion pivoted between the last-named coacting members, a portion of said lever being located for operation between the longitudinal members in said frame and terminating in a hand grip, a scraper blade hingedly mounted for swinging in a horizontal plane on a, vertical axis on the vertex portion of said V-shaped adapter, a strap connected at its ends to the rear side of said scraper blade and provided with notches and constituting a rack bar, said latch lever being selectively engageable with the notches in said rack bar, supporting wheels mounted on said frame, spring means attached at one end to the lever and at its opposite end to the frame and serving to hold the latch lever in a chosen keeper notch, and handle means connected with said frame.

HORACE D. CALLAHAN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS

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