US1645606A - Cutter guard for mowing machines - Google Patents

Description

Oct. 18, 1927.

S. E. LYLE CUTTER GUARD FOR MOWING MACHINES Filed Nov. 6, 1925 2 Shgets-Sheet 1 .ZIZ/ZLO, v QM Oct. 18,1927. ,6 6

' S E. LYLE CUTTER GUARD FOR MOWING MACHINES Filed Nov. 6,. .1925 2 Shets-Sheet 2 PATENT- o Fics.

i SAMUEL E. LYLE, OF MONTGOLIERY, ALABAI/IA.

CUTTER GUARD non MOWING MACHINES.

Application filed November This invention relates to an improved cutter guard for use upon mowing machines.

What I propose is an improved guard, the body portion of which is quite similar to that now employed. but is constructed to accoinmodate a hingedly mounted retainer for a readily removab e cutter plate.

More specifically, the guard is formed with a recess above which it is bifurcated, the furcation accommodating a, winglike part on a hingedly mounted retainer, and said retainer embodying a plate disposed over the removable cutter plate.

A. feature of construction is a novel key and slot connection between the wing of the hinged part and the outer end edge of the removable cutter plate.

Other features and advantages of the invention 'will become apparent from the following description and drawings.

In the accompanying drawings forming a part of this application, and in which like numerals are employed to designate like parts throughout the same:

Figure 1 is a side elevation of a cutter guard constructed in accordance with the present invention showing the complete assembly.

Figure 2 is a longitudinal section through the same.

Figure 3 is a horizontal section taken approximately 011 the plane of the line 3-3 of Figure 1.

Figure 4 is a cross section taken approximately upon the plane of the line 4-t of Figure 1.

Figure 5 is a top plan view of the cutter plate removed.

Figure 6 is a perspective view of the casting forming the body of the guard.

Figure 7 is a bottom plan view of the cutter plate retainer detached.

Figure 8 is a side elevation of this retainer.

Figure 10 is an end View of the same.

Figure 9 is a cross section taken approximately upon the plane of the line 9-9 of Figure 1.

Referring first to Figure 6 it will be seen that the reference character 1 designates a single metal casting in the form of a forwardly tapered and pointed body 2. The outer end portion of. this body is increased in height as shown, and is bifurcated as indicated at 3 to provide spaced furcations l. Beneath these furcations it is formed with a 6, 1925. Serial No. 67,469.

longitudinal recess 5., Beyond the furca-' tions and recess it is flat and reduced in height and increased in width as shown at 6. This flattened portion terminates on a plane with a pair of outstanding spacing lugs 7,

the inner opposed ends of these being beveled to receive the correspondingly shaped edges of the removable cutter plate 8. This plate is fiat in design and tapered outwardly as shown in top plan in Figure 3, and the longitudinal edges are shaped to provide cutting edges to act in the usual manner. On its underside, this plate is formed with a T-shaped head 9 which is slidably received in the corres ondingly shaped recess 10 in the aforesaid casting. At this time I would direct attention to Figure 5 wherein it will be seen that the plate is provided in its upper face with a niche 11 to receive a suitable instrument to be utilized in driving the plates out to remove it. Also, the opposite end of the plate is formed with a key hole slot 12 which acts in the manner to be hereinafter described.

The aforesaid retainer is generally indicated by the reference characters 13 (see Figures 7 to 10 inclusive). The retainer comprises a horizontal plate like portion 14 having a right angular wing-like extension 15 provided with pin holes 16 and 17. At the point of connection with the wing, it is formed with outstanding portions 18 providing shoulders to rest on top of the cutter plate 8. Moreover, beneath these shoulders it is formed with rounded ribs 19 functioning as keys for reception in the correspondingly shaped portion of the aforesaid slot 12 (see Figure As before intimated, the parts 15 is received between the furcations 4 and the lower portion is seated in the aforesaid recess 5. l/Vhen the removable cutter plate is in position on the fiat face 6 in Figure 6, the shoulders 18 com-e down on top of the plate 'asshown, Figure 9, and at the same time the keys 19 are received in the slot 12, whereby to hold the cutter plate firmly in place but to allow it to be readily removed. A pivot pin 20 passes through the furcations 4 and the pivot hole 16 (see Figure 8) and a retaining pin 21 (see Figures 1 and 2) passes through the body portion 2 and the hole 17. In this way the retainer is held in the operative position shown in the last named Figures and in turn maintains the cutter blade in position. The pin 21 may be removed however, and the retainer swung up to the dotted line position shown in Figure 1 to permit the plate to be removed.

It is believed that by considering the description in connection with the drawings, persons familiar with devices of this class will be able to obtain a clear understand ing of the invention. Therefore, a more lengthy description is thought unnecessary.

Minor changes coming within the field of invention claimed may be resorted to if de-- sired.

Having thus described the invention, what I claim as new is 1. In a structure of the class described,

said shoulders being adapted to bear upon the top of said plate, and aretaining pin passing through said body and wing.

2. In a device of the class described, a cutter guard comprising a-body portion provided at its forward ends with the usual tender, and a flat cutter plate receiving surface directly rearwardly ot' the fender, a removable cutter plate, lugs arranged 011 the flat surface of the body at the rear end portion thereof and between which the cutter plate is slidable, the rear end of the body portion being provided with an inverted T-shaped recess, an inverted T-shaped lug carried by the bottom of the rear portion of the cutter plate and adapted to be disposed within the aforementioned recess for locking the rear portion of the plate on the adjacent portion of the body, and additional locking means pivotally associated with said fender and cooperating with the forward portion of the cutter plate.

In testimony whereof I aflix my signature.

SAMUEL E. LYLE.

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