US1109084A - Plow-lifting mechanism. - Google Patents

Description

W. F. SOHADE.

PLOW LIFTING MECHANISM.

APPLICATION FILED AUG. 4, 1913. 1, 1 09,084 Patented Sept. 1, 1914.

2 SHEETS-SHEET 2.

Q I I lll I Hh 32d I Sewn wow 20 WE Sc HA 05 I Wile moses O 7W aumw I'HE AORRIS PE ERS CO.. FHOTO-LITH'Q. WASHINGTON, D C.

plow,

WILLIAM F. SCHADE, OF GRIFFIN, NORTH DAKOTA.

PLOW-LIF'IING MECHANISM.

Specification of Iietters Patent.

Patented Sept. 1, 1914.

Application filed August 4, 1913. Serial No. 782,985.

To all whom it may concern:

Be it known that I, NILLIAM F. .SCHADE, a citizen of the United States, residing at Griffin, in the county of Bowman and State of North Dakota, have invented certain new and useful Improvements in Plow-Lifting Mechanisms, of which the following is a specification, reference being had to the. accompanying drawings.

This invention relates to gang plows, and it more particularly relates to an improved form of plow lifting mechanism.

One of the objects of the invention is to provide means for automatically lifting all of the plows in uniform succession, so that the land may be plowed directly up to a predetermined line at right angles to the line of travel, without any of the plows crossing the line. y

Another object of the invention isto provide a device of'this character by means of which the operation of plowing is simplified and rendered easier to the operator or plowman, by eliminating the necessity for manually raisingeach of the plows of the gang separately.

Another object of the invention is to provide a mechanism of this character whereby the plows of the gang may be lowered in uniform succession, by a simple reversing mechanism, so that the operation of plowing may be begun directly on a predetermined line, at right angles to the lme of travel.

Another object is to provide a mechanism of this character which is of simplecojnstruction, comparatively inexpensive, strong, durable, compact, and thoroughly practical, effective and efficient.

In the accompanying drawings, which supplement this specification, Figure 1 is a side elevation view of a fragment of a gang stitutes my invention; Fig. 2 is a fragmental vertical sectional view of the mechanism taken on the line 22 of Fig. 1; Fig. 3 is a plan view of the mechanism illustrated in Fig. 2; Fig. 4 is an enlarged vertical sectional view taken on the line 4 4 of Fig. 2;

and Fig. 5 is an enlarged vertical sectional view taken on the line 55 of Fig. "2. j p

In these drawings, in which similar reference characters correspond with similar parts throughout the several views, the main frame 10 is supported by ground wheels 11 and a mainshaft 12, and carries'theplows 13,through the medium' of the members 14,

embodying the mechanism which con-.

each of which comprises a combined plow beam and stock, each beam 14 being provided with a standard 15 which is fixedly secured thereto.

The frame 10 is provided with upstanding bearmg supports 10 on which the journal boxes 16 are carried, one of said journal boxes 16 being provided on each side of the frame, and carry a shaft 17. This shaft 17 is in gear with the shaft 12 through the medium of a train of beveled gearsnnd a vertical shaft 18, the gears being designated by the numerals 19, 20, 21,22 and 23 respectively; the gear wheel 19 being mounted in fixed and concentric relation to one of the ground wheels 11, the gear wheels 20 and 21 being mounted to rotate with the shaft 18, while the gear wheels 22 and 23 are mounted to rotate with the shaft 17, being mounted for axial movement on said shaft 17. A forked shifter member 24 engages the peripherally grooved bosses of the wheels 22 and 23, so as to retain them in'fixed relation with each other; so that when said lever 24 is moved in the axial direction of the shaft 17, one of these axially movable wheels is thrown into mesh with the wheel 21, while the other is simultaneously thrown out of mesh therewith. bracket 25 spans the front part of the frame 10, and the medial horizontal portion of this supporting bracket is provided with keepers 26, between two of which the handle portion of the lever 24 is engaged. These keeper elements co-act with the lever 24 for holding either of the axially movable wheels in engagement with the wheel 21.

A series of sheave wheels 27 are mounted on the shaft 17 and adapted to rotate thereon, being held against axial movement by means of collars 28 and a series of toothed wheels 29; the latter being rigidly secured on the shaft 17 and being adapted for engagement with a pawl 30 which is pressed by a spring 31, tending to hold it in engagement with the wheel 29. One of the pawls 30 is pivoted to each of the wheels 27 and is in theform of a lever, being provided with an arcuate contact surface 30, and in the path of this element 30 is a combined trip and stop member 32 which is pivotally mounted in bearings 33 on the frame 10."

extension 32 and "with a motion-limiting ele- A supporting ment 32 A spring 34 is provided for holding the member 32 in its normal position, while any suitable means may be employed for moving it out of its normal position; a chain 35 being employed in the present instance, said chain being secured to the member 32 at 32, and passing thence around and under pulleys 36 which are journaled on the frame 10; one end of the chain 35 being secured to the bracket 25, in easy reach of the operator.

A chain or other flexible element 37 is secured to each of the levers 15, and each chain has one end secured to one of the sheave wheels 27, and is adapted to be wound in the peripheral groove of said sheave wheel; guide pulleys 38 being mount-' ed adjacent to the sheave wheels, and tension devices being mounted on the respective chains 37. In the present instance the tension devices each consists of a weight 39 and a pulley 39 It will be seen, therefore, that when one of the sheave wheels 27 is rotated, it will co-act with the contiguous chain 37 and arm or standard 15 for raising the plow which is connected thereto.

All of the sheave wheels except one of the outside ones are provided with a cam lug or trip element 40, while each of the arms 32 except one of the outside ones is provided with a lateral extension 32 which extends into the path of the trip lug T0 of one of the adjacent wheels 27. Only one of the members 32 is provided with the chain 35, this member being the one which is not pro vided with the lateral extension 32 Each of the sheave wheels is provided with y a pair of spaced cam lugs or wedge-shaped elements ll, these elements being tapered in opposite directions and each having its cam surface at an obtuse angle to the intersecting radii of the wheel. The space between these members ll is adapted to receive the element 32, while each member 41 constitutes an abutment adapted to coact with said. element 32 for preventing rotation of the wheel 27 when the elements 32 and 41 are engaged. It will be seen, from an inspection of Figs. l and 5 that when the elements 32 are in engagement with the combined cam and stop elements 41, the surfaces 30 and 32 are in contact, and in such relation that the detent 30 is held out of engagement with the wheel 29. It will also be seen that when the member 32 is moved out of engagement with the members ll, the surface 32 is swung out of contact with the surface 30,

so that the spring 31 presses the member 30 into engagement with the wheel 29. Obviously, the spring 34 must be of sufficient strength to overcome the pressure of the spring 31, for holding the member 32 in its normal position, as in Figs. at and 5.

The operation of this mechanism is as follows: lVhen the forward plow 13 has reached the line or point at which the plowing is to cease, the operator pulls the chain 35, so as to draw the element 32 out of engagement with the abutments l1. It will be seen thatthis operation moves the member 32 out of contact with the member 30, allowing it to engage the wheel 29; so that the right hand wheel 27 rotates with the right hand wheel 29, thereby co-acting with 'the chain 37 for raising the right hand plow 16. When the right hand sheave wheel 27 has nearly completed one revolution, the cam surface of one of the elements atl impinges upon the element 32, so as to swing the member 32 rearwardly, and when the notch between the elements 41 moves into registry with the element 32, the latter is pressed into engagement with said notch by means of the spring 34. This moves the surface 32 again into contact with the surface 30 and swings the lever or pawl 30 on its pivot, so as to disengage it from the wheel 29, and the right hand sheave wheel 27 is now held against rotation by means of the element 32, and it will be seen that the forward plow is now held up out of the ground by means of this right hand disk and the contiguous chain 37. During the rotation of the right hand disk, the trip lug d0 of this right hand wheel 27 has impinged upon the element 32 of the second wheel 27 of the se ries, so as to swing the member 32 rearwardly, in the same manner that the first or right hand member 32 was swung rearwardly by the chain Now, it will be seen that the engagement of the element 32 with the elements %1, the disengagement of the elements 30 and 32, and their reengagement is affected in the same manner as described, vin the foregoing, with regard to the right hand plow-lifting mechanism; which mechanism comprises a sheave wheel 27', a gear wheel 29, a chain 37, and a combined trip and stop member 32. It will also be seen that the trip lugs 40 of each wheel will successively engage and trip the members 32 of the adjacent plow-lifting mechanisms until the last plow of the gang has been raised.

WVhile no attempt has been made to illustrate the invention to an accurate scale, it is designed that the diameters of the respective sheave wheels 27 shall be in such proportion to the lead of the respective plows, that all of the plows will be successively raised on a common vertical plane intersecting the line of travel at right angles. Moreover, while I have illustrated and clescribed my invention as applied to a gang of right hand plows, it is obvious that I may modify and transpose the elements of my invention to make them equally applicable to a left hand gang plow, without departing from the spirit of the invention.

When it is desired to lower the plows,

after they have been raised, it is only necessary to properly shift the member 24 for bringing the wheel 23 into engagement with the wheel 21, thereby reversing the rotary motion of the shaft 17 and the elements 27 and 29.

It will be seen that I have provided a mechanism of this character which is fully capable of attaining the foregoing objects in a thoroughly practical manner.

While the accompanying drawings illustrate what I believe to be the preferred embodiment of my invention, it is to be understood that the invention is not limited thereto, but that various changes may be made in the construction, arrangement and proportions of the parts without departing from the scope of the inventlon, as defined in the appended claims.

I claim:

1. A stop mechanism including a shaft, means for rotating the shaft, a wheel freely rotatable around the shaft, a toothed member fixed to the shaft, a pawl carried by the wheel and normally maintained in engagement with the toothed member, spaced members carried by the wheel, a member adapted to be moved between such spaced members whereby the wheel is held against rotation, and means movable simultaneously with the last mentioned member engageable with the pawl to release the same from enmember, a combined trip and stop member pivotally mounted and provided with a trip arm extending into the path of said pawl and being provided with a stop arm projecting on the oppositeside of the wheel from the trip arm, means for manually moving the combined trip and stop member, and cam lugs carried by the first member for moving said combined trip and stop member independently of said manually operated means, said stop arm being adapted for engagement with the first member for holding it against movement while the trip arm is adapted to engage the pawl and adjust the same out of engagement with the toothed member.

In testimony whereof I hereunto afiiX my signature in the presence of two witnesses.

WILLIAM F. SCI-IADE.

Witnesses: I

WM. ALLEN ARMSTRONG, J. E. GULDEMANN.

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

Washington, .D. 0.

Images