US1316520A

US1316520A - Planograph co

Info

Publication number: US1316520A
Authority: US
Publication date: 1919-09-16
Anticipated expiration: 1936-09-16

Description

H. H. SUMMERS.

DISK SHARPENER. APPLICATION FILED MAR. 3, 1919.

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H. H.- SUMMERS.

DISK SHARPENER.

APPLICATION FILED MAR. s. 1919.

Patented Sept. 16, 1919.

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UNITED STATES PATENT OFFICE.

HARVEY (SUMMERS, onMA vEm; IOWA.

' r al lcohom it mag concern:

- Ma'lvern in the county of Mills and State of Beitknown that I, HARVEY HiSpi unns, a citizen of the United States, residing at Iowa, have invented new and useful Improvements in Disk-Sharpeners, of which the following is a specification.

This invention relates to sharpening means fordisks for harrows and the like, and the principal object of the invention is to pro vide means for sharpening the disks while the implement is being used.

Another object of the invention is to provide means for adjusting the device to suit different implements and also to provide means for permitting a certain amount of movement of the sharpening stone to permit it to adjust itself to the lateral movement of the disks the bearings of which have become worn or loose.

The invention also consists in certain other features of construction and in the combina tion and arrangement of the several parts to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claims.

In describing my invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 shows the device applied to a disk harrow;

Fig. 2 is a side view of the device;

Fig. 3 is a view of the other side;

lcilig. 4 is a plan view with parts in section; an

Fig. 5 is a section on line 5-5 of Fig. 2;

Fig. 6 is a section on line 66 of Fig. 2;

Fig. 7 is a bottom plan View of the clamping means shown in Fig. 4;

Fig. 8 is a section on line 88 of Fig. 2.

The drawings show my invention as applied to a disk harrow, but it will, of course, be understood that the device may be attached to other implements which are provided with disks with but few changes in the means for clamping the device to the implement.

In these views 1 indicates the frame of the harrow which is constructed of angle iron as shown. This frame supports the usual shafting on.which are located the disks 2. My sharpening device comprises an arm 3 which is provided with a slot 4 and a circular head 5. The arm between the head and 1 Specification of Letters Patent.

t Application filed March 3, 1919. Serial No. 280,231.

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Patented Sept. 1 1919.

slot isgiven a half-turn so that the head will i lie at right angles to the slotted part ofthe arm. A. pair of clamps 6 engage said slot and these clamps engage one of the angle bars of the crane to hold the device in position on the harrow. As shown each clamp is provided with a screw-threaded stem 7 which is engaged by a winged nut 8 for holding the clamp in the slot and a head 9 is connected with the stem, said head having a hook portion for engaging with the angle bar. One clamp is provided with a short head to engage with the parallel portion of the bar while the other clamp is provided with a long head for engaging with the other portion of the bar. The head is provided with a centrally-located opening through which passes a screw bolt 10 and with slots 11 located around said opening. These slots extend radially with respect to the opening. The other arm 12 of the device is provided with a head 13 which is provided with a circulararranged opening 14 through which the bolt 10 passes. The two heads are held in contact with each other by means of a coiled spring 15 located on the bolt and adjusted by means of a winged nut 16. The head 13 is provided with a boss 17 which carries a spring-pressed plunger 18 which is provided with a handle 19. The end of the plunger when in projected position will engage with one of the slots 11 so as to hold the head 13 against rotary movement on the other head.

. The arm 12 is slightly twisted so that it lies 21 which hold the sharpening stone 22 on the' arm. These clamps are provided with the cross pieces 23 for engaging one face of the arm and the clamps are held in position by the nuts 24. By means of these clamps the stone may be adjusted to compensating for wear.

The arm 3 is secured to the angle bar of the frame by means of the clamps and then the arm 12 is adjusted to place the stone in correct position for engaging the head of the disks to sharpen the same. This adjustment is secured by releasing the plunger from the slotsll and then moving the arm 12 to correct position. The plunger will then swing back into normal position and engage another slot to hold the parts together. It will thus be seen that as the harrow is being used one of the disks will be sharpened. As soon as this disk is sufliciently sharpened the device is moved on the frame to engage with the next disk. By marking the frame the device may be easily set in its proper position thereon Without loss of time. If a disk should have a Worn hearing so that the disk will have lateral movement on its shaft the stone Will have movementto compensate for this lack of movement by means of the spring 15 so that there is no danger of breaking the device.

What I claim is: r

1. A device of the class described, comprising an arm having an enlarged head, means for clamping the arm to the implement, said head having slots therein, a bolt carried by said head, a second arm having an enlarged head Provided with an opening to receive said bolt, a, spring on said bolt, a nut on the bolt for placing the spring under tension to yieldingly hold the heads together, a spring plunger on the second head adapted to engage With any one of the slots and a stone carried by the second arm.

2. A device of the class described, comprising an arm having an enlarged head and a slot clamps engaging said'slot for clamping the arm to the implement, a second arm having an enlarged head, means for adjust V ably and yieldingly holdingsaid heads together and means for adjustably holding a stone on the second arm.

In testimony whereof I aifix my signature.

HARVEY H. SUMMERS.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents. Washington, D. G.