US794796A - Cultivator. - Google Patents

Description

110'. 794,796 PATENTED JULY 18. 1905. W. s. GRAHAM.

CULTIVATOR.

APPLIGATION FILED PIIBJI, 1905.

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.No. 794,796. PATENTED JULY 18, 1905.

W. S. GRAHAM. 1

OULTIVATOR.

APPLICATION FILED IEB.11.1905. 4 SHEETS-SHEET 2.

Z W I r ml /o No.-'794,'796. PATBNTBb JULY 18, 1905.

w. s. GRAHAM.

GULTIVATOR.

APPLICATION FILED FEB.11,1905.

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ANDREW s, GRAHAM c0" umoonwns, WASHIROTON, u. c.

UNITED STATES Patented July 18, 1905.

PATENT OFFICE.

WILLIAM S. GRAHAM, OF CANTON, ILLINOIS, ASSIGNOR TO PARLIN & ORENDORFF COMPANY, OF CANTON, ILLINOIS, A CORPORATION OF ILLINOIS.

SPECIFICATION forming part of Letters Patent No. 794,796, dated July 18, 1905,

Application filed February 11, 1905. Serial No. 245,2L2.

To fill whom it ntwy concern.-

Be it known that I, VVILLIAM'S. GRAHAM, a citizen of the United States, residing at Canton, in the county of Fulton and State of Illinois, have invented certain new and useful I n1- provements in Cultivators, of which the following is a specification.

My improvement relates toa cultivator,and especially to one comprising a gang of cultivator or shovel frames.

My object-is to constructa machine employing a series or gang of cultivator or shovel frames such that the machine will be compact and simple in construction and so arranged that the gang of shovel-frames may be elevated or depressed simultaneously while permitting a single shovel-frame to be elevated or in elevated position.

depressed independent of the gang or series. There is preferably shown a main operating or tension device comprising a strong spring which is put under tension by the depression of the shovel -frame so connected with the lifting mechanism that it will assist in lifting both the gang of shovel-frames and any individual shovel-frame and will also cooperate with the lifting mechanism to hold the shovelframes in raised position.

Another feature consists in the connection between the shovel frarnes and the lifting mechanism such that there is permitted a very fine adjustment when the shovels are in their depressed position regardless of lateral movement, while insuring that the shovel-frames may be lifted very high by a comparatively small movement of the lifting mechanism.

In the drawings, Figure 1 is a plan view of the machine. Fig. 2 isa side elevation. Fig. 3 is a detail view of the main operating-spring and its connection. Fig. Lisa sectional view of the levers for lifting the shovel-frames. Fig. 5 is adetail view of the lifting mechanism, showing the parts with the shovel-frame in depressed position. Fig. 6 is a detail view of the lifting mechanism, showing the relative location of the parts when the shovel-frame is In Figs. 5 and 6 the parts are broken away. Fig. 7 is a perspective detail view.

.wheels G.

In the drawings, the frame comprises two cross-bars A and B, Figs. 1 and 2. These cross-bars are connected by rails C, which converge at their forward ends (looking toward the front of the machine) and are connected to the tongue D. There are shown two tongues and two rails for each tongue, the rear end of each tongue being supported on the cross-bar B. It will thus be seen that this particular machine which I have illustrated is a three-horse machine.

The arches Eare supported by the cross-bar B, and the arches constitute the frame to which the shovel-frames are pivoted in the usual manner, and, as particularly shown in Figs. 5 and 6, these arches are braced by braces connected with the tongue and crossbars. As shown in Fig. 2, the arches F,which are supported by the cross-bar A, Figs. 1 and 2, constitute the axle for the carrying- The shovel-frames a are connected together by a coupler a Fig. 2, which coupler is supported by the cross-bar A. The

shovels are indicated by the reference-letter stood that the other pair are duplicates of the ones described.

The hand-levers a and a are pivoted to a bracket a, Figs. 2, 5, and 6, which bracket is rigidly bolted to the cross-bar A. There is a segment-plate a with notches formed on both upper sides of the same. This segment-plate, as shown in Fig. 4, is formed with a hub projecting from each side of the same, (indicated by reference-letter a There are sockets a" formed in the ends of each hand-lever a and a which bear against the hub (i Said sockets are cut away at the rear in the manner in+ dicatedat a There are pro ections extending from said sockets (indicated by a and a spring a, which connects the two hand-levers together. It will be apparent in the construction described that either one of the hand-levers may be moved laterally against the tension of the spring, the cut-away part a permitting lateral movement of the sockets a about the head ends of the hub a The hand-levers are each formed with a tooth or, Figs. 3 and 4, and the tooth or lug of each hand-lever is adapted to engage in the notches a of the segment-plate a Consequently the tooth formed on each hand-lever is held in contact with the notches formed on the segment-plate by means of the spring a; but each hand-lever, as heretofore explained, may be disconnected from the same-by moving said hand-lever laterally against the tension of the spring, and after the hand-levers are disconnected from the segment-plate they may be oscillated back or forth independent of segment-plate a for the purpose hereinafter described.

. There are lugs a formed on the segmentplate which cooperate with the projections a, formed on the sockets of the hand-levers to arrest the movement of the hand-levers and prevent the same from moving past the notches formed on the segment. There is a bolt (1, which extends through the hub and segment-plate and through the ends of the sockets of the hand-levers and the bracket a, thereby pivotally connecting said parts to said bracket. It is arranged that both the segment-plate and the hand-levers may be oscillated on the bolt a as apivot. The socket a of hand-lever a is formed with a lug a, and a connecting-rod a is pivoted at one end to said lug a. Said rod is formed with a loop at the other end, a, and this loop connects with a pin formed on the crank-arm (0 Figs. 1 and 3. This crank-arm is journaled loosely on the shaft a. In Figs. 1 and 3this crank-arm 64 is shown formed with a lower arm, which is connected to a rod or link, which in turn is connected to the left-hand shovel-frame (looking toward the front of the machine) of the right-hand pair of shovelframes, (indicated by (0 The shaft a, as seen in Fig. 1, extends partly across the frame of the machine and constitutes the connection between the lifting mechanism and the right-hand shovel-frame of said pair of shovel-frames. This shaft is supported by the rails C C and is journaled loosely in the bearings formed on said rail.

The hand-lever a has its socket a" also formed with a lug a, Fig- 3, and there is a connecting-rod (4 pivoted to one end of said lug and formed with a loop a at the other end, which loop is connected to a crank-arm a, rigidly journaled on the shaft 64 the right-hand end of said shaft there is an said link (0 is pivotally connected. to a rod 0 which is pivotally connected to the shovelframe a at a point indicated by reference-letter (0 It is apparent, therefore, that whenever the crank-arm a is oscillated the shaft (0 is also oscillated in its bearings, which in turn oscillates the arm (6 When the shovelframe a is in its lowermost or depressed position, as seen in Fig. 5, the step a will be out of contact with the projecting stop formed on .the arm (1 and consequently a slight movement of the arm (4 will cause only a slight movement of the shovel-frame; but when the arm a is elevated into the position shown in Fig. 6 the step a will contact against the stop a, and the link (0 and arm (0 will then become a compound lever, and a slight movement of theshaft (0 will transmit a comparatively great movement to the shovel-frame a by reason of the increased leverage.

As will be seen from Fig. 2, the connecting-rod a? is pivoted to arm (0. at a point substantially directly above the center about" which shovel-frame a is swung. Consequently the shovel frame may be moved laterally when in working position without affecting the depth at which theshovel will work nor interfering with the fine adjustment provided for by the step a. By this construction I can use short levers a and a located closely to the operator, capable of effecting a very fine adjustment of the shovel-frame by a comparatively short movement thereof.

Referring to Figs. 5 and 6, I have shown the segment-plate a formed with a tailpiece (i To this tailpiece there is pivoted a link 64 which in turn is pivoted to the upper end of the crank-arm 0 which crank-arm is pivoted near its center to the bracket a and is connected at its lower end to the spring a which constitutes the main operating spring or device of my machine. The crank-arm a is formed with a hook projection (0 which in normal position, as shown in Fig. 5, is adapted to contact against the tailpiece a, and it is readily seen that in this position the contractile force of the spring a tends to hold the segment-plate (0 against upward movement, and thereby tends to hold it in its depressed position, the said segment-plate being shown in Fig. 5 in elevated position and in Fig. 6 in depressed position. When the shovel-frames are depressed and the segment- The inner end each end in bearings formed in the crankarms a and a In this way the spring is at its inner end connected to both hand-levers by reason of its connection with the arm (0 which in turn is connected at its ends with the crank-arms a and M".

The tail of the segment-plate a is formed with the projecting stop a, and said stop when the lever is in elevated position bears against the bracket (0, as shown in Fig. 5, and in this position the tension of the spring a holds the stop a against the bracket by reason of the toggle formed by the pivots of the links and the lever a falling approximately into line, thereby holding the handlevers and segment-plate in elevated position in the lowermost position of the shovel. The frame is held partly in place by the toggle by reason of the force of the spring a being transmitted through the arm (0 and the link e and extending downwardly on the stop (6, so as to hold it in engagement with the frame.

It will be evident that by reason of the loops a and their connections with the shovelframes the shovel-frames can be lifted independent of the connectingrods (4 and a. By this construction obstructions on the ground in which the shovels are working may raise the shovel-frames without in any way affecting the hand-levers and segment=plate. It will also be apparent that the main operating-spring a, as shown in Fig. 6, tends to assist to oscillate the shaft (0 and thereby assists in raising the shovelframes connected therewith and in holding the same in raised position. The connections between the spring a and each hand-lever are such'that there is a limited amount of movement in the ends of the arm 0 within the bearings formed in the crank-arm a and (0 so that each hand-lever can be moved independent of the other, and the spring a will assist in the raising of any shovel-frame and in the holding of the same in its elevated position.

It is apparent that if neither one of the hand-levers is moved laterally and disconnected from the common segment-plate the movement of one hand-lever will move the segment-plate and the motion will be transmitted to the other one of the hand-levers, so that the gang or pair of shovel-frames will be moved simultaneously. From the description it will be seen that in the position shown in I Fig. 6 the tension of the main operatingspring a will be through the hooked end a I In the position of parts shown in Fig. 5, as heretofore explained, the tension-spring a will operate on the segment-plate in such manner as to cooperate with the stop a to hold said levers in elevated position and hold the segment-plate against movement, while in Fig. 6 the parts are shown moved to a position such that the spring a will act as a counterbalance to the weight of the shovelframes, since the weight of the shovel-frames will tend to elevate the controlling-levers and oscillate the segment-plate, whereas the tension of the spring will tend to hold the controlling-levers and plate against such movement.

Having thus described my invention, I claim 1. In acultivator, the combination of a gang of shovel-frames with a main operating device, means for raising said gang of shovel-frames, and means for raising independently each individual shovel-frame, and connections with the main operating-spring whereby said operating device will cooperate to assist in raising said gang, and in raising each individual shovel-frame, for the purpose specified.

2. Inacultivator, the combination of agang of shovel-frames with a main operating device, controlling-levers connected to said shovelframes, connections from said operating device to said levers, and means for automatically holding said levers both in raised and lowered position by the tension of said operating device, substantially as specified.

3.. In a cultivator, the combination of the shovel-frames, means for elevating and depressing said shovel-frames, a main operating device, and a stop device for said elevating means cooperating with said main operating device to hold said elevating means against movement when in elevatedposition, and means for counter-balancing the force exerted by said frames on said levers, substantially as described.

4. In a cultivator, the combination of a shovel-frame, means for elevating and depressing said shovelframe, a movable stop device, and connections between said stop device and said elevating means whereby the main operating device will hold said stop against the frame of said cultivator when the shovel-frames are in normal or depressed position and connections between the main operating device and the elevating means for automatically holding the elevating means against movement in the elevated position of the frames by the tension of the main operating device, substantially as described.

5. In a cultivator, the combination of a shovel-frame with a lever for elevating and depressing the same, connections between said lever and said shovel-frame, comprising a plurality of arms, oneof said arms being formed with a step, and another with a projection adapted to bear against said step, means for raising said frame a predetermined distance prior to the contact of said projection against said step, for the purpose specified.

6. In a cultivator, the combination of a plurality of shovel-frames, a universal-joint connection between said shovel-frames and cultivator-frame, controlling-levers for elevating and depressing said shovel-frames, and a connecting-rod pivoted at its lower end to said shovel-frame independent of said universal joint and a member common to said shovelframes connected to the upper ends of said connecting-rods substantially in a direct line above said joint, for the purpose specified.

7 In a cultivator, the combination of a plurality of levers and a plurality of shovelframes, a single segment for both of said levers, a main operating device connected to said segment, and also connected to each of said levers, independent of said segment, connections from each of said levers to a shovel-frame, for the purpose specified.

8. In a cultivator, the combination of a plurality of levers, a movable segment device, a plurality of shovel-frames, connections between said shovel-frames and said movable segment device, a main operating device put under tension by said shovel-frame, and means for automatically holding said movable segment against movement by the tension of said main operating device when said frames are in the elevated position, for the purpose specified.-

9. In a cultivator, the combination of controlling-levers with shovel-frames connected therewith, a main operating device, connections between controlling-levers and said operating device for holding said levers against movement when said frames are in depressed position and for counterbalancing said frames when in elevated position, for the purpose specified.

10. In a cultivator, the combination of the controllinglevers, shovel frames connected therewith, a main spring, connections from said main spring to said levers comprising movable arms, and means for moving said arms whereby same will cooperate with said main operating-spring to hold said levers against movement when said frames are in depressed position and to counterbalance the weight of said frames when same are in ele- Vated position.

11. In a cultivator, the combination with controllinglevers, shovel frames connected therewith, a main operating device, a movable stop device, connections from said main operating device to said levers comprising movable arms adapted to cooperate with said main frame whereby said main operating device will hold said stop device against the cultivator-frame when the shovel-frames are in depressed position and will counterbalance the weight of said frames when same are in elevated position, for the purpose specified.

12. In a cultivator, the combination witha plurality of controlling-levers, a segmentplate common to two of said levers, means for holding said levers in engagement therewith, means for moving any one of said levers laterally for the purpose of disconnecting same from said segment-plate, shovel-frames, and connections from said shovel-frames to said levers, a main operating device, and connections comprising movable arms between said main operating device and said segment-plate whereby said main operating device will hold said segment-plate against movement when said frames are in depressed position and will assist in counterbalancing the weight of said frames when same are in elevated position, substantially as described.

13. In a cultivator, the combination of shovel-frames movable laterally with controlling-levers for elevating and depressing the same, connections between said frame and said levers, including a connecting-rod, pivoted to the shovel-frames, the arc of lateral movement of said frames being in the same horizontal plane and substantially equidistant from the center about which the said connecting-rod swings, for the purpose specified.

1a. In a cultivator, the combination of shovel-frames with controlling-levers, connections between said levers and said shovelframes, comprising pivoted connecting-rods and a plurality of arms connected to said rods, which arms are arranged to move independently during the preliminary raising of said shovels, but adapted to form a compound lever during further movement, said connecting-rods being pivoted to one of said arms, the pivotal point thereof being substantially in line with the axis of movement of the shovelframe, and perpendicular to the horizontal plane of said frame, for the purpose specified.

15. In a cultivator, the combination of a plurality of shovel-frames with a plurality of controlling-levers, connections between each pair of levers, a main operating device connected at one end to a pair of shovel-frames and at the opposite end to the connections for the controlling-levers, for the purpose specified.

In testimony whereof I have hereunto set my hand this 6th day of February, A. D. 1905.

WILLIAM S. GRAHAM.

WVitnesses:

GEORGE O. EGGLESTON, MARSHALL N. KIRKHUFF.

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