US1107442A - Disk furrow-opener. - Google Patents

Description

F. R. PAGKHAM.

DISK' FURROW OPENER.

APPLIOATION FILED ooT.11, 1912.

1 1 07,44% llPaLtzenized Aug. 18, 1914.

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TH NORRIS PETER'S D0.. Fuomilnv., WASHINGTON. IJA C.

UNITED STATES FATEN T GEIQ.

FRANK R. PACKHALM, OF SPRING-FIELD, OHIO', ASSIGrNOR T0 THE AMERICAN SEEDING MACHINE COMPANY, OF SRINGFIELD, OHIO, A. CORPORATION OF OHIO.

DISK FURROIV-OPENER.

ademas.

Application led October 11, 1912.

To all whom t may concern Be it known that I, FRANK R. PAcKHAu, a citizen of the United States, residing at Springfield, in the county of Clark and State of Ohio, have invented certain new and useful Improvements in Disk Furrow-Openers, of which the following is a specification.

This invention relates to improvements in disk furrow-openers for seeding machines; the invention relating more particularly to a furrow-opener which employs a shield or scraper for the disk.

The object of the invention is to provide a construction in which the shield or scraper may be readily adjusted to its proper position against the face of the disk; also to provide an adjustment requiring a minimum number of parts; and also to provide a construction which will allow the parts of the furrow-opener to be more readily and easily assembled.

In the accompanying drawings, Figure 1 is the side elevation of a furrow-opening device embodying the improvements. Fig. 2 is a section on the line 2 2 of Fig. l. Fig. 3 is a section on line 3-3 of Fig. 2.

Like parts are indicated by similar reference characters in the several views.

It has been common to form the support proper in two parts, one part carrying the disk and the other part the boot, and shield or scraper, and means are provided for adjusting these parts relatively to each other in order to cause the shield or scraper to conform itself properly to the convex side of the disk. Difficulty, however, has been eX- perienced in adjusting the two-part support in this prior device and in order to make the adjustment more easy and effective I have devised the following construction.

The disk, represented by 1, is of the usual concave-convex form rotatably connected to one of the parts 2 of the support by the bolt 2a in any suitable manner; the usual dragbar 3 being connected to the forward part of said support 2. The boot is represented by 4: and has a forwardly projecting arm 5 which forms the other part of the main support. Connected in this case to the toe of the boot is a scraper 6 of a well-known construction shaped to conform itself to the conveX side of the disk and with its forwardscraping edge formed on the arc of a circle.

Formed integrally with the supporting part 2 and projecting from the upper rear Specification of Letters Patent.

Patented Aug. 18, 1914-..

Serial No. 725,201.

edge thereof is a cone-shaped socket 7. Formed integrally with'the supporting part 5 and projecting from the forward upper edge thereof is a tapered perforatedvtrunmon 8, fitted to the socket 7. Projecting rearwardly through the tapered trunnion 8 is a bolt 9 having on its rear screw-threaded end a nut 10 which lies in a recess 11 in the supporting part 5, and so formed as to'prevent the nut from turning.

By the co-nstruction thus far described it will be seen that the forward edge of the blade 10 may be brought in proper yposition coincident to the disk by revolving the taperedspindle 8 within the tapered socket 7, and by then tightening the nut 10, by turning the bolt, the parts may be held in proper rela-tive positions to each other. Ars an additional safe-guard, however, against the movement of the parts of the support with respect to each other after the proper adjustment is made, there is inserted in the part 2 adjacent to the socket thereof a setscrew 12, which, after the adjustment is made, may be brought to bear against the wing 18 projecting from the part 5, thus making it impossible for the part 2, which carries the conduit and scraper, to move outwardly away from the disk; the disk preventing the scraper and boot from moving beyond certain limitations in the opposite direction.

The aXis upon which thel tapered spindle S turns is indicated by the broken line aa and is substantially parallel to a line drawn from the eXtreme lower and upper points of contact of the scraping edge of the scraper with the disk, as indicated by the broken line 6 5. Thus it will be seen that in adjusting the parts, all portions of the scraping edge of the scraper must move to their true position against the disk and that this adjustment is a positive one which may be very easily and readily made; also thatthe construction is such that the parts will be positively retained in their adjusted position, since, even though the bolt should work loose, the supporting member which carries the boot and scraper will still be heldin its adjusted position by the set-screw and disk.

I'Iaving thus described my invention I claim l. In a disk furrow opener, a support, a

disk mounted on said support, a boot projecting downwardly having a toe, a

scraper projecting from the toe of said boot, the said hoot, toe piece and scraper lying in a vertical plane such that the scraper will normally Contact against the disk, a swiveled connection between the boot and the support located at a point above the scraper for permitting a lateral adjustment of said boot and scraper consisting of a spindle on one of said parts and a socket to receive said spindle on the other part, together with means for positively drawing said bootand said support together to fasten same, While maintaining the lateral adjustment of said hoot and scraper to said disk, substantially as specified. u

2. In a disk furrow opener, a two-part support, a shield or scraper mounted on one of said parts and a concavo-,convex disk on the other of saidparts, a spindle on one of said parts and a socket Aon the other of'said parts to receive said spindle, together With means for holding said spindle in said socket, and an adjustable stop on one of said parts adapted to engage the other of said parts to prevent rotation of said spindle in said socket.

In testimony whereof, I have hereunto set my hand this 5th day of October 1912.

l FRANK R. PACKHAM. Witnesses R. H. Kirn, CLYDE BROWN.

`(Jellies. of tili'iz.Y :patenti may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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