US1831681A

US1831681A - Edge trimming and mowing machine

Info

Publication number: US1831681A
Application number: US313542A
Authority: US
Inventors: Miller Josephus
Original assignee: Individual
Current assignee: Individual
Priority date: 1928-10-19
Filing date: 1928-10-19
Publication date: 1931-11-10
Anticipated expiration: 1948-11-10

Description

Nov. 10, 1931. J. MILLER 1,831,681

EDGE TRIMMING AND MOWING MACHINE Filed Oct. 19. 1928 2 Sheets-Sheet 1 J w/l, Mlle):

INVENTOR ATTORNEY Nov. 10, 1931. J. MILLER 1,831,681

EDGE TRIMMING AND MOWING MACHINE Filedoct. 19. 1928 2 Sheets-Shee 2.

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INVENTOR ATTORNEY mama Nov. 10, 1931 UNITED STATES PATENT -OFFICE JOSRPHUS mm, or mursvnmn, xmrrucmr me a m nowme moms a licmn filed October 1a, 1928, Serial min-8,542.

motor itself is likewise vertically adjustable, 20

' and in which the cut is continuous regardless of the direction of movement of the machine. A further object is to provide a machine in which the blade is effective to the extreme sides of the frame and at the forward portion thereof between the front wheels, so that a close out may be made at any of the three 1 places referred to.

A further object is to provide a motor for driving the cutting'blade, which rotates on a vertical axis, and to provide a grinding 1 wheel on the upper end of the vertical armature shaft of the motor, permitting convenient sharpening ofthe knife or blade, when desired, upon removal from its normal position,the vertical adjustment of the motor being resorted to either for conveniently positioning the grinding wheel with reference to elevation, or for correctly positioning the cutting blade in accordance with the depth of the cut to be made. 7

With the foregoing and other objects in view, the invention consists in the novel construction and arrangement of elements described, illustrated and. claimed, it being understood that modifications may be made Within the scope of the claims without departin from the spirit of the invention.

In the drawings forming part of this application,

Figure 1 is a top plan view of the machine. Figure 2 is a view in side elevation with parts in vertical section.

Figure 3 is a view in front elevation with parts in dotted lines.

Figure 4 is plan view of the cutting blade or knife.

Figure 5 shows a modified cuttin in plan, for use on the lower end of t e motor shaft, and Figure 6 is an edge view of one of the elements of this cutting device.

' A main frame includes the up 10 and the side elements 11 an device,

12, and a r portion 7 roller 13 is journaled at 14 and 15 in the

aforesaid elements

11 and 12, or at the rear of the frame.

Lugs or

ears

16 and 17 provide for the mounting of a bail handle comprising elements 18 and 19 secured by bolts to the handle Handle 20 carries devices 21 adapted to accommodate the electric cord 22 by means of which the motor 23 is to be connected with a source of current supply. A plug 24 is adapt, ed for connection with any lamp socket or the like. A controlling switch is designated 25.

Atthe forward ends of the

elements

11 and 12, and on the inner side'thereof, I mount rollers or

wheels

27 and 28, and the forward portion of the element 10 may terminate about the point designated 29, the mounting of the cutting blade referred to below permitting the operation of said blade, or the end portions thereof, to the limits of the frame laterally, and to the 29 between the

wheels

27 and 28.

This arrangement permits of close cutting, as previously indicated, on three sides of the machine, so that strips of grass adjacent to walks, trees and the like,"may be attended to in a much more efieetive'manner, and may in fact befully cut, whereas with many machines in use no such operation is possible.

The motor 23 is to be mounted in the annular clamping element 31, and is to be adjustably supported therein by means of a wing nut or the like designated 32 and engaging bolt 33 passing through the cars 34 of the clamping device. The armature shaft of the motor is designated 35, and in view of the construction is in a vertical position, and as it mounts the cutting blade 36 on its lower end, the vertical adjustment of the blade, in varying the depth of the cut, can be effected by the use of the clamping device just referred to. Further adjustment to a reasonable extent can be made by means of the nuts shown at 37 and 38 as having threaded connection with the end of shaft 35.

Mounted on the upper end of shaft 35 is an point designated abrasive wheel40 a apted for use in sharpen ing the knife 36 when the latter has been removed for the purpose. This grinding wheel is mounted above a collar or sleeve shown at 42, and is adapted to be enclosed when not in use by a dome-sha ed cover 43 threaded at 44 onto the top of t e motor housing. In the knife sharpening operation, it will be convenient at times to vary the elevation of the grinding wheel 40, and this may be done by adjusting the clamping device at 32 and 33, in the same manner in which the adjustment of the cut when the machine is in operation, is made.

A modified cutting device includes circular rotatable blades, appearing in Figures 5 and 6, and desi ated 47, a transverse bar 48 mounting the blades or disks, and being adapted for connection with the lower end of the motor shaft, as in the form disclosed in Figure 2.

Having described the invention what is claimed is:

1. In a mowing machine, a frame, a motor including an armature shaft mounted in the frame, a blade mounted on the lower end of the shaft, said shaft being positioned vertically, means for varying the elevation of the blade by changing the elevation of the motor above the ground, and means for independently changing the position of the blade with reference to the shaft.

2. In a mowing machine, a main frame including partly cylindrical portions integral with said frame, a motor including an armature, adjustable means for retaining the part- 1y cylindrical portions in variable clam ing relation with the sides of the motor, a s aft for the arinature, and cutting means carried by the shaft.

In testimony whereof I aflix my signature.

JOSEPHUS MILLER.