US740562A

US740562A - Mower.

Info

Publication number: US740562A
Application number: US15854399A
Authority: US
Inventors: Alfred Hart
Original assignee: FREDERICK E HART; JOHN L JACKSON; RALPH W HART
Current assignee: RALPH W HART; FREDERICK E HART; JOHN L JACKSON
Priority date: 1899-12-26
Filing date: 1899-12-26
Publication date: 1903-10-06
Anticipated expiration: 1920-10-06

Description

Nn. 740,562. PATBNTED 00T. 6,1903.

' A. HART.. MOWER.

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Patented October 6, 1903. A

APATENT OFFICE.

ALFRED HART, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO SAID ALFRED HART, FREDERICK E. HART, `OF CHICAGO, ILLINOIS, RALPH W. HART, OF SAN FRANCISCO, CALIFORNIA, AND JOHN L. JACKSON, OF RIVER FOREST, ILLINOIS.

MOWER.

SBECEFICATION forming' part of Letters Patent No. 740,562, dated October 6, 1903. Application led December 26, 1899. VRenewed May 23, v1903. Serial No. 158,543. (No model.)

To a/ZZ whom it may concern.-

Be it known that I, ALFRED HART, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Mowers, of which the following'is a specication, reference being had to the accompanying drawings.

My invention relates to harvesting machineryand particularly to mowers, and has for its object to provide certain improvements in machines of the type illustrated and described in my application tiled April 9, 1898, Serial No. 676,978, wherein spring devices are vprovided for raising and lowering the finger-bar.

In the apparatus of my former application above referred to a lifting-lever is provided for raising and lowering the finger-bar, said lever being provided with a torsion and resilient spring adjustable for the purpose of operating said lifting-lever, the arrangementbeing such that when said spring is moved to a certain position it acts to operate said lever and raise the finger-bar, whereas when moved to a dierent position its effect on the lifting-lever is diminished, so that the weight of the nger bar carries it down. In my former application the spring is operated by means of a foot-lever.

. The improvements which form the subjectmatter of my present invention specifically considered consist in providing means by which the operation of said lifting-spring is controlled by thedraft of the team, so that when the draft is applied the finger-bar is lowered to its operative position, and when the team stops the lifting-spring acts to raise the finger-bar to its inoperative position; but, generically considered, my present invention consists, broadly, in providing means by which the nger-bar is .automatically lowered from its ordinary inoperative position to its operative position when the team is started andV is automatically raised vto a more or less nearly vertical or inoperative position when the team is stopped.

In the accompanying drawings I have illustrated my invention as applied to a mower .are concerned my invention is not limited toV the use of the specific apparatus illustrated, but includes variations and modifications thereof.

vIn the drawings, Figure l is a side view of a mower embodying my improvements. Fig. 2 is a view of the draft devices and a part of the linger-bar. Fig. 3 is a plan view of a part of the'draft devices. Fig. 4 is a side view of the lifting spring and lever, the tinger-bar being in section; and Fig. 5 is a similar view showing the finger-bar in its raised position.

Referring to the drawings, 6 indicates the tongue, which is secured at its rear end to the frame 7 of the machine. Y

8 indicates one of the wheels.

9 indicates the nger-bar, which is pivcted at 10 in the usual Way.

1l indicates the whietree, which is advadjustably mounted under the tongue on a rod 12 andis provided with a spring 13, Aby which the adjustment of the whiffletree is regulated. In the construction illustrated the whiletree 1l is supported from the rod 12 by a bracket 14, to which it is connected by a pin 15, as shown in Figs. 1 and 2.

16 indicates a lever, which is pivoted on the pin 15, as shown in Figs. 1 and 2. The pivot-hole of the lever 16 is placed at one side of the longitudinal center thereof, so that said lever is provided with long and short arms 17 and 18, respectively, as shown in Fig. 3.

19 indicates a rocking lever,which is mounted upon a pivot 20 and is connected by rod 21- with the linger-bar 9, as shown in Figs. 4 and 5, the arrangement being such that the rocking of said lever 19 raises and lowers the finger-bar, turning it on itsy pivot lO iu the familiar manner. The lever 19 is directly operated by a springk22, the rear end of kwhich is connected to an adjustable stop 23, secured to a suitable bracket 24, carried by the frame of the machine. spring is connected to a hook 25 or othersuitable devices carried by an Iarm 26, which is The forward end of said mounted upon a pivot 27, fitted in a lug 28, carried by the lever 19 and extending at right angles to said lever, as illustrated in Fig. 5, the arrangement being such that the arm 26 is adapted to rock in a plane perpendicular to the plane of the lever 19. The length of the arm 26 is such that when it is rocked to carry the hook 25 to its lowermost position said hook is in line with or slightly below pivot 20 of the lever 19, and when the hook is in its uppermost position it will lie at a considerable distance above the pivot 20. The result is that the spring 22 exerts a lifting force when the hook 25 is in its upper position, but exerts little or no lifting force when the hook is in its lowermost position. The spring 22 has a torsion as well as a lifting effect, which is secured by twisting the spring before it is put into place, the hook 23 being provided with a squared shank, so that it cannot turn in its socket. The spring 22 is so twisted that it is adapted to operate to carry the arm 26 up into operative position, the torsional tendency of the spring being i ncreased when said arm is moved down to inoperative position under the action of the team, as will be hereinafter described.

29 indicates a flexible connecting device, one end of which is connected to the long arm 17 of the lever 16, the other end thereof being secured to a pulley 30, mounted upon the pivot 27, connected to the arm 26, the arrangement being suchvthat when the arm 26 is in its uppermost or operative position and the connecting device 29 is moved in the direction indicated by the arrow in Fig. 5, which is the case when the draft of the team is applied to it, the arm 26 is rocked on its pivot down into inoperative position, permitting the finger-bar to drop by its own Weight and at the same time putting said spring under greater torsional tension.

3l indicates a guide-pulley for the connecting device 29.` When the draft of the team is removed from the connecting device, the torsional strain of the spring 22 acts to throw the arm 26 up into operative position, permitting the spring to raise the finger-bar. The short arm of the lever 16 is connected by connecting devices to the finger-bar support, as shown in Fig. 1, and by reason of the fact that the arm 18 is shorter than the arm 17 a greater proportion of the draft of the team is applied to the finger-bar than to the liftingspring mechanism. This arrangement is desirable, as it is unnecessary that the fingerbar bear upon the ground very heavily-in fact, it is frequently desirable that the fingerbar should run lightly on the ground. By adjusting the position of the pivot of the lever 16 the proportionate part of the power applied to the finger-bar and spring-lifting devices may be regulated.

The operation of the machine will doubtless be understood from the foregoing description; but it may be advisable to state that the normal position of the finger-bar and lifting devices is as shown in Fig. 5, the fingerbar being raised to a more or less nearly-vertical position bythe spring 22, acting through the arm 26 and the lever 19, the hook 25 by which the spring is connected to the arm 26 being then at its greatest distance from the pivot 2O of the lifting-lever 19. When the draft of the team is applied through the connecting device 29, the arm 2O is rocked on its pivot, carrying the hook 25 down substantially into line with the pivot 20, so that the spring 22 has practically `no lifting effect, and consequently the finger-bar drops to operative position under its own weight and continues sc until the draft of the team is removed, when the torsional action of the spring 22 throws the arm 26 up into operative position, giving the spring 22 a leverage sufficient to enable it to overcome the weight of the finger-bar and raise it. Under certain circumstances, as when the machine is not in operation, it is desirable to lock the lingerbar in its raised position, and to this end a locking-pin' 33 is provided, which is mounted in a suitable support 34, carried by the lever 19, and is adapted to enter a suitable socket in the arm 26, as shown in Fig. 5. A spring 35 may be provided for moving the pin into its socket when it is desired to have the locking automatic. Sometimes it is desirable to limit the height to which the finger-bar is raised, and for that purpose an adjusting device is provided consisting of a bracket 36, having a slot 37, adapted to receive a bolt 38, carried by the lever 19. By passing the bolt 38 through the slot 37 the movement of the lever 19 is limited.

It will be understood that in my improved machine the draft of the team operates to lower the finger-bar from its ordinary inoperative or substantially vertical position to operative position. This, so far as Iam aware, has never before been accomplished. Furthermore, the automatic lifting mechanism operates to restore the linger-bar to its inoperative or substantially vertical position when the draft of the team is removed, and this also, so far as I am aware, has never before been accomplished. My invention therefore is not restricted to the specific details of the construction illustrated and described except in so far as such features of construction are particularly claimed.

That which I claim as my invention, and desire to secure by Letters Patent, is-

l. In a harvesting-machine, the combination of a machine-frame, a finger-bar, means for raising the finger-bar to its vertical, or inoperative, position, and means for vautomatically lowering said linger-bar from its vertical to its operative position when the team is started, substantially as described.

2. In a harvesting-machine, the combination withamachine-frame,anger-bar, means for automatically lowering said nger-bar to operative position when the team is started, and means for automatically raising said 1in- IIC ger-bar to inoperative position when thevteam is stopped, substantially as described.

3. In a harvesting-machine, the combination of a machine-frame, a finger-bar, means for raising the inger-bar to its vertical, or inoperative,'position, and means operated by the draft of Jthe team for lowering the fingerbar from vertical -to operative position, substantially as described. v

4. In a harvesting-machine, the combination of a machine-frame, a finger-bar, means operated by the draft of the team for lowering the nger-bar to operative position, and spring mechanism for raising the finger-bar to inoperative position when the draft is removed, substantiallyas described.

5. In a harvesting-machine, the combination of a machine-frame, a nger-bar, and means for automatically raising said lingerbar to inoperative position when the machine is stopped, substantially as described.

6. In a harvesting-machine, the combination of a machine-frame, a finger-bar, and spring mechanism for automatically raising said linger-bar to inoperative position when the team is stopped, substantially as described.

7. In a harvesting-machine, the combination of a machine-frame, a linger-bar, a lifting-lever for raising said finger-bar, means operated by the'd'raft of the team for lowering the finger-bar, and a spring for raising said lever whenthe draft of the team is removed, substantially as described. y

8. In a harvesting-machine, the combination of a machine-frame, a finger-bar, means for automatically raising said finger-bar to inoperative position when the machine is stopped, and means for limiting the height to which the finger-bar is raised, substantially as described. I

9. In a harvesting-machine, the combination of a machine-frame, a linger-bar carried thereby, means operated bythe draft of the team for lowering the finger-bar from vertical,

to an operative position, and means for raising the finger-bar to its vertical, or inoperative position when the draft is removed.

10. In a harvesting-machine, the combina-` tion of a machine-frame, a linger-bar, a springactuated mechanism for retaining said lingerbarin its Avertical,or inoperative, position,and

means connected to the mechanism and oper-g ated by the draft of the team for lowering said Jringer-bar from vertical to operative position.

11. In a harvesting-machine, the combination of a machine-frame, a linger-bar connected thereto, a spring-actuated mechanism connected thereto and adapted to elevate the said bar, means operated by the draft of the team and connected to said mechanism for lowering thesaid bar, and means for locking said bar in an elevated position.

12. In a harvesting-machine, the combination with a machine-frame, of a rocking lever pivotally connected thereto, a inger-bar connected to said lever, a spring engaging said lever for normally retaining the same and said ringer-bar in an elevated position, and means connected to the lever and operated by the draft of the team for lowering said lever and bar.

13. In a harvesting-machine, the combination with a machine-frame, of arocking lever pivotally connected thereto, a finger-bar connected to said lever, a spring engagingsaid lever for normally retaining the same and said linger-bar in an elevated position,'and means operated by the draft of the team for adjusting said spring with reference to the lever.

14. ln a harvesting-machine, the combination with a machine-frame, and-a inger-bar carried thereby, ot' means for elevating said bar to an inoperative position, a spring mechanism for operating said means, and means tion with a machine-frame and a linger-bar carried thereby, of rockingmeans for elevattative position.

I6. In a harvesting-machine, the combination with a machine-frame and a finger-bar carried thereby, of a pivoted rocking lever l adapted when operated to elevatesaid bar, a

spring adapted tov operate said lever to elevate the said bar, and means connected to said lever and operated by the draft of the team for lowering said finger-bar.

17. In a harvesting-machine, the combina- -tion with a machine-framel and a finger-bar carried thereby, of a pivoted rocking lever forV elevating said bar, an arm carried by said lever and movable in a path sustaining an angnlarrelation to the piane. of said lever, and aspring movable into and outof operative position by the draft of the team for operating said lever.

18. In a harvesting-machine, the combination with a machine-frame and a finger-bar carried thereby, of a pivoted rocking lever for elevating said bar, an arm carried by the said lever, a support, and a spring connected to said arm and support and movable into and ont of operative position bythe draft of the team and adapted for operating said lever, causing thereby the elevation of said bar.

19. In a harvesting-machine, the combination with a machine-frame and a finger-bar carried thereby, of a lifting-lever operated and adapted to elevate the said bar, and a spring connected to "said lever,sad spring normally exerting sufticient force on the lifting-lever to operatel it and being adjustable by the draft of the team to exert insufficient force on said lever to elevate the bar.

IOO

IZO

20. In a harvesting-machine, the combination with a machine-frame and a linger-bar carried thereby, of a pivoted rocking lever for elevating said bar, an arm carried by said lever and movable in a path sustaining an angular relation to the plane of said lifting-1ever, a spring connected with said arm, said spring having a torsional as Well as a resilient action, and means connected to the arm and operated by the draft of the team for lowering the said bar.

2l. In a harvesting-machine, the combination with a machine-frame and a finger-bar carried thereby, of a pivoted rocking lever for elevating said bar, an arm connected to said lever, means operated by the draft of the team for rocking said arm, and a spring secured at one end to a suitable support and at the other end to said arm for operating said arm and causing the elevation of said bar when the draft of the team is removed.

22. In a harvesting-machine, the combination With a machine-frame and a finger-bar carried thereby, of a pivoted rocking lever for elevating said finger-bar, an arm connected to said lever, a torsion-spring securedat one end to a suitable support and at the other end to said arm, and means connected to the said arm and operated by the draft of the team for lowering the said bar.

23. In a harvesting-machine, the combination With a machine-frame and a finger-bar carried thereby, of apivoted rocking lever for elevating said bar, an arm connected to said lever, a spring secured at one end to a suitable support and at the other end to said arm for operating the said lever, causing thereby the elevation of said bar, means for adjusting said spring, and means connected to the arm andv operated by the draft of the team for lowering the said bar.

24. In aharvesting-machine, the combination with a machine-frame and a finger-bar carried thereby, of a rocking lever for elevating said bar, an arm connected to the said lever, a pulley, a spring connected to said arm and to a suitable support for rocking said lever, causing thereby the elevation of said bar, and a connection operating over the said pulley and operated by the draft of the team for lowering the said bar.

25. In a harvesting-machine, the combination with a machine-frame anda linger-bar carried thereby, of a rocking lever for operating said bar, an arm connected to the said lever, a pulley, a spring connected to the said arm and adjustably connected to a suitable support for rocking said lever, causing thereby the elevation of said bar, and a flexible connection passing over the said pulley and operated by the draft of the team for lowering the said finger-bar.v

26. In a harvesting-machine, the combination with a machine-frame, and a linger-bar carried thereby, of a rocking lever for operating said bar, an arm connected to the said lever, a pulley, a spring connected to the said arm and adjnstably connected to a suitable support for rocking the said lever, causing thereby the elevation of said bar, a flexible connection passing over the said pulley and operated by the draft of the team for lowering the said finger-bar, and means for locking the said finger-bar in an elevated position.

27. In a harvesting-machine, the combination with a machine-frame and a finger-bar carried thereby, of a rocking lever for elevating the said bar, an arm connected to said lever, a support, a spring connected at one end to said arm and adjustably connected at its opposite end to said support and adapted io rock the said lever for elevating the said bar, a pulley and a connection operating over said pulley and operated by the draft of the l team for lowering the said lfinger-bar.

ALFRED HART.

Witnesses:

` JOHN L. JACKSON,

ALBERT H. ADAMS.