US2983058A

US2983058A - Roller guide for plow blade

Info

Publication number: US2983058A
Application number: US3392A
Authority: US
Inventors: Hertz Michael
Original assignee: Individual
Current assignee: Individual
Priority date: 1960-01-19
Filing date: 1960-01-19
Publication date: 1961-05-09
Anticipated expiration: 1978-05-09

Description

May 9, 1961 M. HERTZ ROLLER GUIDE FOR PLOW BLADE Filed Jan. 19, 1960 Fig.- 8 v I ENTOR. Michael erfz W fi W HIS A TTORNE YS Statm Patent 'Fatented May 9, 1961 2,983,058 ROLLER GUIDE For: PLOWBLADE Michael Hertz, 520 Dorseyville Road, Pittsburgh 38, Pa.

Filed Jan. 19, 1960, Ser. No. 3,392 '4 Claims. (Cl. 37-46) none of these known guides have ever attained commercial success since they lack rugged construction, ease of assembly and disassembly, freedom from jamming and freeze-ups, long-life and low maintenance costs.

My invention overcomes all of the deficiencies of the known snow plow guides. My guide is extremely durable and rigid in construction; it is simple .to assemble and disassemble by use of common well-known tools; it has only a limited number of moving parts, thereby insuring low maintenance costs; and it is so constructed that any entry of ice, snow, and undesirable materials into the :1;

moving parts of the guide is hindered or prevented.

I have described. a presently preferred embodiment of my invention in the following drawings, in which:

.Figure 1 is a side elevation view of my roller guide mounted on a plow blade;

Figure 2 is a frontelevation viewof my roller guide mounted on a plow blade; 7

Figure 3 is an enlarged front elevation view of my roller guide with parts removed for clarity;

Figure 4 is a plan view of my roller guide;

" Figure 5 is a cross-section of the top portion of my roller guide taken on line VV of Figure 4;

V Figure 6 is a cross-section on line VI-VI of Figure 3;

Figure 7 is a perspective of a modified form of a frame for my roller guide; Y

z V through it. The

holes

19 and 20 are in vertical alignment witheach other. The bottom hole 20' has a smallerhole 21 opening into it from the bottom of the support plate 18. A circular shaft 22 is positioned in the

holes

19 and 20 and spans the space between the support plates and holes The

holes

19 and 20 are sufliciently largeto provide a loose fit for the shaft. A hole 23 is bored axially into the top support plate 17 and threaded to admit a set-screw 24. The hole 23 opens axially into hole 19. The set-screw 24 is tightened against a flat areaon the upper end of shaft 22 to prevent rotation of the shaft in

holes

19 and 20 and aid in locking the shaft within the holes 19and' 20. The lower end of shaft 22 also has a flat area against which the set-screw 2'4 abuts when the shaft is inverted as described hereinafter.

A tubular roller '25 has

Oilite bearings

26 and 27 at its upper and lower ends. The shaft 22 passes through and has a sliding fit within the

bearings

26 and 27 and the bearings have a press-fit within openings in the upper and lower ends of the roller 25. V

Each of the

bearings

26 and 27 have axially extending flanges extending beyond and overlapping the ends of the roller 25'. An opening 28 through the roller is of sufficient size to freely admit the shaft 22. Thus, roller 25 rotates freely about the stationary shaft 22 on

bearings

26 and 27.

A small rectangular keeper plate 29 is positioned above the top support plate 17 and covers the upper end of hole 19. This keeper plate is affixed to the top support plate 17 by a bolt 30 which threads into a hole in'the top support plate 17. Thekeeper plate tightly covers the top of hole 19 to prevent entry of undesirable material such as snow, ice, dirt, cinders, etc., into the hole 19.

The roller 25 is only of sufficient height to permit its introduction plus the thicknessof the flanges of the

bearings

26 and 27 within the space between the upper and

lower support plates

17 and 18. This insures that no undesirable material will enterpbetween the support plate and the rollers.

, The shaft 22 rides/on the bottom face of hole 20 in the bottom support plate 18. I j

; If any undesirablematerial-should enter between the flange of the bearing '26 and the upper face ofthe bottom A support plate 18, it passes downwardly through hole 20 Figure 8 is a'perspective of another modified form of frame for my roller guide; and

Figure 9 is -a cross-section through the modified form of frame shown in Figure 7. Briefly the present invention includes a roller guide having a frame with spaced support plates affixed thereto, and a vertical bearing mounted roller rotatable about an axle positioned in holes in the support plates.

More specifically, a roller guidej10 is aflixed to either or both transverse vertical edges of a plow blade 11 having a replaceable lower edge '12; The plow blade 11 and its manner of affixation to a vehicle is well known.

The guide 10 is affixed to the edge of they plow blade 11 in any desired manner, such as welding or bolting an the angle plate 13 to the guide.

The guide includes a frame 14 having a first leg'15 afiixed at right angles to a second leg 16. Preferably this frame 14 is a conventional angle structure. A top sup plate 17 is welded to the inside of the frame 1 4 near the upper end of the frame. A bottom support plate 18 is welded to the inside of the frame 14 near the bottom of the frame. 1 I l Y angle plate 13 to-the blade 11 and also welding or bolting and out hole 2l-lthrough the bottom of supportplate 18:

The hole 21 also provides" an opening for-lubrication of the surfacebetweenthe bottom of shaft 22 and the bottom Wh l .2 r I is frequently used against low curbsf' 'such as shown inFigure 3 and thus only the lower half of roller 25 is subjected to abrasion and wear. "I have .7 found that it is desirable to be able to invert the roller 25 so that the unworn top half of the roller can be ,used.

To accomplish this, it is necessary to unthread the boltqf 30, thereby removing the keeper plate 29, loosen set-screw" 24, and push a screw-driver or similar instrument'upf My roller guide through the hole 21, thereby pushing shaft 22 upward out of holes 19 and 2t} "and out of the roller 25. The roller 25 is then removed from between the

support plates

17 and 18; inverted; and the shaft 22 inserted through the set-screw 24 may be threaded -22.

I have also found'that in using myjguide in types of snow, particularly the type containing large amounts of'unflozen moisture, the snow is packed i tween the roller 25 andthe frame 14... Thesn'owfis packed at the I juncture of the

legs

15 and 16 on the inside of the frame. It is of'utmost importance that, the rollerw 1 be free torotate atall times sinceif it looks, flat spot will be quickly worn on the roller due to abrasion against a curb or building. To insure that there is no locking of the roller due to packing of the snow as above stated, I have cut a plurality of holes 31 in the frame as shown in Figure 7. These holes 31 are cut at the juncture of the

legs

15 and 16 to insure that the snow entering between the inside of the frame and the roller will pass out of the frame through the holes 31. I have also shown a continuous hole 32 in a modified form of frame as shown in Figure 8 to serve the same purpose as holes 31. The particular configuration or location of these

holes

31 and 32 is not important; however, I have found that the best location for the holes is at the juncture of the

legs

15 and 16.

My roller is mounted in a vertical position as shown in Figure 1 to insure that the roller will rotate against any curb or building which it may abut. It is undesirable to mount the roller at an angle other than vertical since it will then be dragged against any abutting curb and quickly abrated; however, it is within the scope of my invention to mount the roller at any angle.

I have also found that it is desirable to coat the outer surface of roller 25 with a rubber material to reduce the abrasion of the roller against curbs and the like.

I have also found that the preferable height for the roller 25 is 6" and the preferable diameter 2 /2". The shaft 22 is preferably 1" diameter.

While I have described a present preferred embodiment of my invention, it may be otherwise embodied within the scope of the following claims.

I claim:

1. A snow plow blade including a guide rigidly mounted on the blade to protect the transverse vertical edge of the blade from abrasion against rigid structures, said guide comprising an elongated vertically extending L-shaped frame having first and second legs united along a vertically extending edge; top and bottom support plates aflixed rigidly to the inside of said L-shaped frame; said support plates being spaced from and substantially parallel to each other; a circular hole extending vertically through said top support plate; a circular hole extending vertically through a portion of said bottom support plate and having a bottom face directed upward toward said 'top support plate; said holes being in vertical alignment;

means engaged with said guide and shaft to maintain the shaft immovably in said holes; a cylindrical roller surrounding and rotatable about said shaft; said roller being 4 positioned between and in spaced relationship to said support plates; and a pair of bearings affixed inside said roller and having openings in alignment with said holes in the support plates such that the shaft is slidably mounted in the hearings to permit revolution of the roller with said shaft as the axis of revolution.

2. A blade according to claim 1 wherein said means to maintain the shaft immovable within the holes is a set-screw threadably engaged with the top support plate and in locking engagement with the shaft; and a keeper plate removably affixed to the upper side of the top support plate, said keeper plate being positioned over the hole in the top support plate; and a vertical opening extending from the hole in the bottom support plate to the lower face of the bottom support plate; such that the keeper plate may be removed, the set-screw unlocked from the shaft and the shaft removed from the guide by insertion of a pushing device upward through said vertical opening in the bottom support plate to push the shaft upward out of the holes and roller, thereby permitting inversion of the roller if wear on the lower part of the roller is excessive.

3. A blade according to claim 1 wherein said bearings have fiat radial flanges extending beyond the upper and lower ends of said roller; said flanges being positioned between the ends of the roller and the support plates and engageable with said support plates to maintain the roller in spaced relationship to the support plates and hinder the entrance of undesirable matter into contact with the bearings and shaft.

4. A blade according to claim 1 wherein said blade is used to remove snow from streets and roads and the guide is mounted on one side of the blade with the roller facing in the same direction as the blade such that snow may enter between the roller and the legs of the frame; including at least one hole in said first and second legs in the proximity of the juncture of said legs along said vertically extending edge, whereby snow entering between the legs and roller can exit from the frame through the last-mentioned hole.

ReferencesCited in the file of this patent UNITED STATES PATENTS 368,515 Chadeayne' Aug. 16, 1887 1,711,353 Johnson Apr. 30, 1929 1,891,629 Van Wagner Dec. 20, 1932 1,901,647 Howald et a1 Mar. 14, 1933 2,069,282 Silverman Feb. 2, 1937 2,657,408 Machovec Nov. 3, 1953