US1723976A - Mowing-machine construction - Google Patents

Description

WIT/03 5555 @7/W Aug. 6, 1929. E. D. LENHART 1,723,976

MOWING MACHINE CONSTRUCTION File Ma 1927 3 Sheets-Sheet 1 U II I ll IIH HLLHHI N; Q

Zlwuzntow 1520100062 Lf/VAA/i'f Aug. 6,1929. E. D. LENHART 1,723,976

MOWING MACHINE CONSTRUCTI ON Filed March 14, 1927 5 Sheet-Sheet 2 m| e a Aug. 6, 1929.

E. D. LENHART MOWING MACHINE CONSTRUCTION Filed March 14, L927 5 Sheets-Sheet 3 gwue'ntov Elf/V/OMSlZLE/Y/l/IFT ado: new:

Patented Aug. 6, 1929.

UNITED STATES earner OFFICE.

ELENIOUS I). LEITHABI', OF HOW'ARD, FJflU'lI-I DAKOTA.

MOWING-MACHINE CUiIl'tilERUClHCOIN.

Application filed March it, 1927. serial No. 175,364.

This invention relates to a mowing machine construction and more particularly to an improved sickle bar mechanism therefor, and

has for its primary object a novel design of sickle bar construction in combination with gear and disk so that the same will have an 0 opposing relation with the blade for holding the same in its proper position during the operation thereof by the pin carried by the disk.

Besides the above, my invention is distinguished in the novel manner of assembling and connecting the bearing brace with the disk and gear so that these parts may be removed as a unit for allowing ready access to the blade, while at the same time practically eliminating lost motion or play between the parts.

With these and other objects in view, my invention will be better understood from the accompanying drawings, wherein Figure 1 is a top plan view of theinvention;

Figure 2 is a sectional view on the line 2-2 of Figure 1;

Figure 3 is a sectional View on the line 33 of Figure 1;

Figure 4: is a sectional view on the line 4:4: of Figure 1;

Figure 5 is a detail plan view;

Figure 6 is a perspective view of a por tion of the sickle bar;

Figure 7 is a perspective view of a disk and its associated parts;

Figure 8 is a sectional view through the head portion of the sickle bar and its associated parts.

Again referring to the drawings illustrating one of the many constructions of my invention, the numeral 1 designates in its entirety my improved sickle bar construction operated by my improved design of drive mechanism, designated by the numeral 2, which in turn is operated by the wheel structure SE of the mowing machine. My improved sickle bar construction comprises a. bar lupon which is flatly arranged for reciprocatory movement the blade 5 which is provided with a horizontal head 6 in which is formed a slot 7. Detachably secured to the bar 4. is a bracket 8 provided with a vertical bearing 8 which is arranged immediately above the head 6 and which supports certain parts of the mechanism in a manner that they may be removed as a unit to allow ready access to the blade. One manner of accomplishing this desired result is by forming the gear 9 solid with the disk 10 that carries the pin 11 working in the slot 7 and arranging this combination gear and disk upon a stub shaft 12 mounted in the bearing 8; Thus it will be seen that by removing the bolts 13 that secure the bracket to the bar, the bracket, gear, disk and pin may be removed as a unit to allow the removal or adjustment of the blade. Any suitable mechanism may be designed for operating the disk, but I have found it an advantage to so design and arrange the various parts of the drive mechanism that the same may be swung into multiplicity of angular positions so that the sickle bar may cut at various angular positions.

In the drawings, I have illustrated a main drive construction 14 consisting of the main shaft 15 arranged in parallel relation to the wheel 3 and having a drive gear 16 at one end and a driven gear 17 at the other end meshing with a gear 18 that receives power directly off of the internal gear 19 through the pinion 20. This internal gear 19 is secured to the wheel 3 of the vehicle.

The auxiliary drive mechanism is connected to the main drive mechanism in a manner to have relative swinging m0vement therewith and to accomplish this desired result I provide the housing 21 arranged at right angles to the shaft 15 and terminating in a bracket 22 swingingly associated with the shaft 15 to properly hold the driven gear 23 in constant mesh with gear 16 but at the same time allow the gear 28 to be adjusted around gear 16 to accommodate the angular adjustments of the housing 21. This auxiliary mechanism also includes a driven shaft 24: terminating in a beveled gear 25 engaging an idle gear 26 tion of the wheel 3 sets the main and auxiliary drive mechanism into operation for rotatmg gear 9, and as the gear 9 is solid with the disk 10 the latter will be rotated in unison to give circular movement to the pin 11. This circular-travel of the pin 11 within the slot reciprocates the knife so that the same may perform its usual function with relation to the sickle bar. When it is necessary to change the angular position of the sickle ;bar,' it is only necessary to raise the structure swinging the sickle bar structure and ;.auxiliary drive mechanism as a unit about lgear 16. This swinging action in no way interferes with the efficient operation of the sickle bar, as the drive mechanism is so designed as to operate the blade in any of its angular positions.

This device is especially constructed to permit the use thereof on highways, and

, particularly for moving along the right-of- Ways of railroads and the like.

' "I wish to call particular attention to the fact that the parts are so designed and arranged that assembling of the mechanism is facilitated, thereby materially reducing the cost of manufacture, and besides certain vital parts may be removed with very little effort for allowing ready accessibility to the blade. It is, of course, to be understood that the various parts may be designed in various other manners than illustrated and asso ciated-in other relations and other forms of drive mechanism may be used for operating my improved sickle bar construction and, therefore, I do not desire to be limited in any manner except as set forth in the following claims.

I claim 1. In a mowing machine, a bar, a blade having a flat sliding engagement with the bar and provided with a horizontal head having a corresponding engagement with the bar and having a slot, a bracket detachably secured to the bar and having a vertical bearing arranged immediately above the head, a shaft journaled in the bearing, a bevel gear and disk fixed to the shaft between the bearing and head and arranged in parallel relation to the head, a pin carried by the disk and working in said slot, :1 gear engaging said first gear, and means for operating said second gear.

2. In a mowing machine, a bar, a blade slidably mounted on the bar and provided with a slot, a bracket secured to the bar, a combined gear and disk rotatably supported by the bracket and provided with a pin arranged-in said slot, a shaft rotatably sup ported near and in parallel relation to one of the wheels of the machine, means establishing a driving connection between the wheel and shaft, a housing arranged at right angles to the shaft and pivotally connected thereto and to the bar, a second shaft journaled in the housing, intermeshing gear carried by the shafts and a ear carried by said second shaft and ines hing with said first gear.

In testimon whereof I afiix my signature.

E ENIOUS D. LENHART.

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