US2199954A

US2199954A - Agricultural implement

Info

Publication number: US2199954A
Application number: US236011A
Authority: US
Inventors: Cadwallader W Kelsey
Original assignee: Individual
Current assignee: Individual
Priority date: 1938-10-20
Filing date: 1938-10-20
Publication date: 1940-05-07
Anticipated expiration: 1957-05-07
Also published as: CH213579A; FR861008A

Description

y 7, 0- c. w. KELSEY AGRICULTURAL IMPLEMENT Filed Oct. 20, 1958 mid/sly HQJ WVF" ATTOR EYS w M a4, ,3

IIIIIII I li l l l g -30 against undue shock UNITED STATES PATENT OFFIC 2,199,954 AGRICULTURAL IMPLEMENT Cadwallader W. Kelsey, Troy, N. Y.

Application October 20, 1938, Serial No.

Claims.

This invention relates to a new andimproved method of rotary tilling, and particularly the extreme stresses both of a lateral and direct nature to which the tools .are sub- 10 jected in operating over hard clay, rocky or other diflicult soil conditions. Today metal springs are most generally used for tool mountings. Owing to the nature of this material and the limited spring action, destructive forces are set up. Parl5 ticuiarly the rapid and destructive rebound which springs and tools.

It is an object 01 the present invention to provide a tool holder which is adequately guarded and strain, and which is flexible both in lateral and axial directions and which does away altogether with the high speed destructive rebound. I

It is another object to provide a tool mounting of this character in which shocks or strains to which the tool may be subjected are not transmitted through to the source.

Still another object is that of providing a tool mountingwhich may row widths and at the same time be suitable for operation over most uneven ground conditions.

object is to. provide a tool holder extremes of soil conditions and to provide for difl'erent depths of tillage.

A still further object is that of providing a tool mounting of this type which may be produced in quantity at low cost, and which may be readily replaced, 'if necessary, with the expenditure of a minimum of time and effort.

With these and other objects in mind. reference is had to the attached sheet of drawings, in which: 1

Fig. 1 is a side elevation of one type-of rotary tiiling machine employing tool holders embody- 5 ing myinvention;

Fig. 2 is a plan view of a'tool holder of the type shown in Fig. 1, and embodying one form of my invention;

- ,Fig. 3 is a cross-sectional view of the holder shown in Fig. 2, taken along the line 3-3 in that driving shaft or motive figure and looking in the direction of the arrow;

Fig. 4- is a further cross-section of tool mountings shown in Fig. 3,

Fig. 5 is a cross-section in fragment and taken through a modified form of tool holder embodying my invention parallel to the axis thereof; and

along the lines 6-6 of Fig. 5 in the direction of the arrow.

Turning now to Fig. 1, we have a source of motive power 5, which may take the form of an internal combustion engine or any other desirable motive source, which in turn is mounted on a frame or chassis 6. This chassis likewise mounts driving wheels 1 by means of an axle or shaft 8, to which is likewise secured a driving pulley 9, which is connected through the belt l0 and the gears H-i2 to the source of motive power. A handle represented in fragment at l3 may likewise be provided, as well as a further drive belt l4, coupled to the source of motive 0 power at one end and a further driving pulley H at the opposite end of the chassis. This latter pulley is mounted on a suitableshait l6 carried by the chassis, to which is also coupled a further driving pulley ll. A belt l8 couples this last named pulley with a shaft I! by means of the V-belt pulley 20, as shown in Fig. 4. Also as is shown in Fig. 4 tool holders 2|, Ila and Zlb are mounted on the shaft l9 and spaced axially from one another, and each may hold,. for example, as shown in tool holder 2|,

cutting tool members

23 and 24, which may be bolted' in the

sockets

25 and 26 by means of bolts." and 28. By providing two parted through a gear chain or other suitable means. Likewise. the precise shape of the tool 55 holders 2!, Ma and 2l b might be modified to hold a greater or lesser number of tools.

Each tool holder is provided with a

peripheral flange

29, 29a and 2%, respectively, at the inner edge of the outer portion of the tool holder. This in turn is vulcanized or in other fashion bonded to a rubber or other

flexible material ring

30, 30a and 30b, which again is in turn bonded to an inner flange 3|, 31a and 31b, carried by the hub member 32, 32a and 32b, of the tool holder. The hub member of each tool holder is provided with a flange portion indicated at 33, 33a and 33b, respectively, which is secured to the driving shaft, for example, by means of

pins

34, 34a and 34b, which pass through aligned openings in the flanges and driving shaft.

As will be noted in Fig. 4 the tool holders may be mounted so that the flange which engages the driving shaft extends either to the right or the left, for example, tool holder 2| has a flange portion 33 extending to the right hand side of the body of the tool holder, whereas, the flange portions 33a and 33b extend to the left of the bodies of their respective tool holders.;gf.-This interchangeable mounting of each individual tool holder provides means whereby the spacing between centers of adjacent tool holders canbevaried at will and is extremely desirable in adjusting the apparatus for use in cultivating different types of farm produce or the like.

In operation, it is apparent that, depending on the conditions encountered, the shaft l9 may be provided with any suitable number of tool mounting members axially aligned thereon, and as the shaft rotates, carrying the tool holders with it, the rubber ring 30 allows the tool members to be displaced or distorted laterally as well as circumferentially of said tool holder. This is extremely useful in using the machine in stony soil where the stones or boulders may be of such large size as to be immovable, in which case this resilient construction allows sumcient time to elapse before the tool reaches the extreme elastic limit, thus allowing the tilling unit tobe lifted over the obstruction without damaging tools, holder or the machine itself. It is quite often the case that a lateral displacement of the tool members through the elasticity or resilience of the tool mount here disclosed is sumcient to allow the rock or boulder to be straddled and the machine can continue uninterruptedly in its tilling operation.

It will be observed that as disclosed in Fig. 4, the cross-section of the rubber ring portion 30 discloses concavities in either edge, as shown at 35. This allows a compression of the rubber ring at either edge during a sidewise displacement of thetool member without causing undue wear on'the ring or excess of gathering at that point and protects the resilient portion from the abrasive action of the soil or small stones.

Turning now to Figs. 5 and 6, it may in some instances be desirable toso construct the tool holder that the outer ring, which is shown at 36, be made mountable with respect to the hub member 31. To this end, both the hub member and the outer tool holding ring may, for example, be formed with

serrated peripheries

38 and 39, in the case of the hub member such periphery being, of course, the outer periphery, while in the case of the tool holder the inner periphery is serrated. Cooperating with these serrated edges is the resilient ring 40, carrying the inner metallic band 4| and an outer metallic of tool holders 2la. and Nb band 42, which are in turn correspondingly serrated to engage the

serrations

38 and 39. These metallic members 4| and 42 are bonded to the resilient portion 40 by vulcanizing or other suitable process to form a unitary structure. In addition, the .tool holder 36 is provided with an internal peripheral groove 43, and underlying such groove is a corresponding external peripheral groove in the ring 42, which is shown at 44. Corresponding grooves in the internal peripheral surface of the metallic ring 4| and the external periphery of the hub member 3! (not shown) can be provided. Riding in such

complementary groove portions

43 and 44 may be, for example, a spring member 45 of uneven or even contour, which is so designed as to maintain an expanding pressure when in position. Accordingly, such spring member 45 forms a key between the serrations 39 and their complement on the metallic ring 42 to prevent sidewise motion of the tool holder with respect thereto.

Should it be desired to remove the tool holder I for replacement. the spring member 45 is depressed through peripheral openings 46 in the tool holder, through which any suitable tool may be inserted. The depression of the spring member, so that the serrated peripheral edges of the adjacent ring will clear one another, will permit of a sidewise movement of the tool holder with respect to the remainder of the disk. In like manner, the resilient ring 40 car be removed from the hub portion 31. Such expedient will permit of ready replacement of damaged portions without the necessity of shop lay-up for the machine involved, and will prove most useful in actual practice.

It is, of course, apparent that the precise de- Sign and structure heredisclosed might be subject to extensive modification and rearrangement without in the least departing from the spirit of my invention.

Having described my invention what I claim as new and desire to secure by Letters Patent is:

l. A tool mount for use in rotary tillage comprising a disk adapted for axial mounting on a driven shaft, a resilient ring permanently secured to the peripheral edge of said disk, and a further metallic ring permanently secured to the outer peripheral edge of said resilient ring, said last named ring being formed with tool receiving socket portions.

2. A tool mount for use in rotary tillage, comprising a metallic disk, a hub portion associated therewith and extending to one sideof the same, a resilient ring permanently united with the peripheral edge of said disk, and a further metallic ring permanently united to the outer peripheral edge of said resilient ring, said last named ring being formed with tool receiving socket portions.

3. A tool mount'for use in connection with rotary tillage comprising, a metallic disk to be coupled to a driven shaft, said disk being formed with a laterally extending flange portion at its peripheral edge, a resilient ring permanently united to said flange portion and of substantially equal width therewith, and a further flange por' tion permanently united to the outer peripheral edge of said resilient ring, said last named flange portion being formed-with tool receiving socket portions.

4. A tool mount for use in connection with ro tary tillage comprising, a metallic disk to be coupled to a driven shaft, said disk being formed with a laterally extending flange portion at its peripheral edge, a resilient ring permanently united to said flange portion and or substantially equal width therewith, a further flange portion permanently united to the outer peripheral edge of said resilient ring, said last named flange portion being formed with tool receiving socket portions, and means associated with said socket portions for adjustably holding said tool members at various depths in said socket portions.

5. A tool mount for use in connection with rotary tillage comprising, a metallic disk, a hub portion associated therewith and positioned to one side thereof, aflange portion associated with the peripheral edge of said disk and extending laterally with respect thereto, a resilient ring permanently united with said flange portion and extending beyond the same, and a further flange portion permanently united to said resilient ring at its outer peripheral edge, said resilient ring being of substantially equal width with said fla'nge portions at its points of connection therewith but presenting concave side walls between said points of connection.

6; A tool mount for use in connection with rotary tillage comprising, a metallic disk, a hub portion associated therewith and positioned to one side thereof, a flange portion associated with the peripheral edge of said disk and extending laterally with respect thereto, a resilient ring permanently united with said flange portion and extending beyond the same, a further flange porlaterally with -'respect thereto, a resilient ring.

permanently united with said flange portion and extending beyond the same, a further flange portion permanently united to said resilient ring at its outer peripheral edge, said resilient ring being of substantially equal width with said ,flange portions at its points of connection therewith but presenting concave side walls between said points of connection, tool receiving socket portions carried by said outer flange, and means associated with said tool receiving socket portions for holding tool members therein at varying depths within said socket portions.

8. A tool mount for use in connection with rotary tillage, comprising a metallic disk to be coupled to a driven shaft, a resilient ring adapted to be removably positioned about the peripheral edge of said disk, and a tool holding ring also adapted to be removably positioned about the peripheral edge of said resilient ring, said last named ring having tool receiving sockets in its peripheral edge.

9. A tool mount for use in connection with ro- .tary tillage comprising a hub portion for association with a driven shaft, an annular tool mount for association therewith and a resilient ring interposed between said hub and said annular tool mount and fastened to each 01' the same, whereby rotation of said driven shaft will efiect a yielding rotation of said tool mount.

10. A tool mount for main connection with rotary tillagecomprising a hub portion for association with a driven shaft, an annular tool mount for association therewith, a resilient ring. interposed between said hub and said annular" tool mount and fastened to each of the same;

whereby rotation of said driven shaft will eifect a yieldin rotation of said tool mount, and tool receiving socket portions carried by said tool mount and means associated with said tool receiving socket portions for holding tool members therein at varying depths within said socket portions.

CADWALLADER. W. KELSEY.