US1165477A - Lock for levers and the like. - Google Patents

Description

C. E. WHITE.

LOCK FOR LEVERS AND THE LIKE. APPLICATION FILED APR. 17. I911. RENEWED MAY 18. 1915.

1,165,477. Patented Dec. 28, 1915.

2 SHEETS-SHEET I WM M comm \IOLUMBIA PLANOGRAIH co, WASHINGTON, D. c.

C. E. WHITE. LOCK FOR LEVERS AND THE LIKE. APPLICATION man APR.17. 1911. RENEWED MAY 18. 1915.

1,165,477. Patented Dec. 28, 1915.

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CHARLES E. WHITE, OF MOLINE, ILLINOIS, ASSIGNOB TO DEERE & MANSUR- COMPANY,

A CGRPGBATIOH F ILLINGIS.

LUCK FOR LEVEBS AND THE LIKE.

Original application filed June 14, 1987, Serial No. 3

Specification of Letters Patent.

Patented Dec. 2 8, 1915 78,379. Divided. and this application filed April 17,

"a specification, reference being had therein to the accompanying drawing.

This invention relates to locking devices for levers and the like. The invention is applicable to levers of various kinds in various relations and the locking device is also applicable to movable parts of machines or structures other than levers. In the present application I show the invention in connection with a foot lever such is employed to swing the scrapers of disk harrows. .This application, in fact. is a division of my application for disk harrows, filed June 1 1,

r 1907, Serial No. 378,979. upon which were granted Letters Patent No. 1,020,530. In the present application I show as much of the harrow mechanism as is essential for a clear understanding of the locking device.

The object of the invention is to provide a lock or stop device for levers, and the like, which is simple in construction and convenient to operate.

In the drawings, Figure 1 is a plan view of a portion of one of the gangs of disks of a harrow. Fig. 2 is a vertical section taken on the line 22 of Fig. 4:. Fig. 8 is a frag mentary view showing a detail of the construction. Fig. l is a vertical section on the line 4ll of Fig. 1. Fig. 5 is a View similar to Fig. 4- showing the lever in a different position.

Referring in detail to the construction shown, 1 and 2 are parallel bars which are rigidly connected by transverse bars or castings 3, 1 and 5 so as to form a rigid frame.

6, 6 are a series of disks suitably mounted upon a spindle 7. The disks are spaced from each other by spools or sleeves 8, 8 and two of these spools are rotatably mounted in bearing boxes 9, 9 which are carried by uprights 10 rigidly secured to the top frame.

11 is a square rock shaft rotatably mounted in brackets 12 and 13 carried by the frame bar 2. To this rock shaft are rigidly clamped scrapers 14, 14 which have their lower ends arranged to engage the concave sides of the disks. f v

15 is a coil spring surrounding the rock shaft 11 and having one end extended upward to engage the frame bar 2 and its other end extended rearward to engage a fingerlike extension 16 of the clamp which carries the adjacent scraper lei. This spring tends both to press the scrapers against the disks and to swing the lower ends of the scrapers inward toward the axis of the disks.

1? is a foot lever rigidly connected at one end to the rock shaft ll and formed at its free end with a suitable foot rest 17. Normally the spring 1 holds the scrapers adja cent the axis of the disks, at which time the foot lever in its uppermost position, but when it is desired to swing the scrapers outward and inward to clean the disks of accumulated soil or trash, the driveig who sits upon a seat at 18, presses downward upon the foot lever to rock the shaft 11 and Swing the scrapers outward while the spring serves to return the scrapers when the driver relieves the lever from downward pressure. in the operation of such a disk harrow l have found that it is desirable at times to hold the scrapers in contact with the peripheral parts of the disks, for in some soils it is not necessary to constantly swing the scrapers in order to keep the disks clean. In order to hold the scrapers in such a position, 1 provide an improved locking device, and it is this locking device to which my invention more especially relates.

19 is an upright pin or bolt which is screwed into a bracket 20 mounted on the lever 17. By turningthe bolt 19 it can be adjusted up or down in the bracket and is secured in adjusted position by a nut 21. 22 is a bracket secured to the frame bar 1 at a point adjacent the lever 17 and the bolt 19. This bracket has an aperture 22 through which the bolt 15) extends. On the front upturned end 22' of the bracket is pivoted an oscillating lock or stop 23. This stop has a handle part 23 and carries on its rear side a rearward extending fiat sided flange 23*. On its front side the stop is formed with a rib 23 which is designed to engage shoulders 24, 25 on the bracket 22, so as to limit the oscillatory movement of the stop 23 to something less than 90 degrees. The extreme positions of the stop are shown by the full and dotted lines in Fig. 2.

l/Vhen the stop or lock 23' is in the position shown in full lines in Fig. 2 it has no effect upon the foot lever 17, because the flange 23 of the stop is out of the path of the bolt 19, so the latter is free to rise and fall. If,

face of theflange 23 is flat and the engag ing end of the bolt 19 is also flat so that the upward pressureof the bolt 19 caused by the spring 15 tends to hold the parts in the locking position indicated by dotted lines in Fig. 2.

When it is desired to release the lever from the lock it is not necessary to manually move the lock 23 for by simply pressing downward on the foot lever 17 the head of the bolt 19 is withdrawn from engagement with the flange of the lock and the latter moves under the action of gravity from the position shown in dotted lines of Fig. 2 to the position shown in full lines. This simple gravity release of the stop makes the locking device exceedingly convenient.

I have shown my improved lock or stop device in connection with a swinging lever, but it will be readily understood now that it can be used to look any oscillatory part or member whether it move about an axis or otherwise. 7

1 do notherein claim any of the subject matter covered in the claims in my application Serial No. 670,412, filed Jan. 10, 1912, for improvements in disk harrows, which was also filed as a division of the aforesaid application, Serial No. 378,979, upon which,

as aforesaid, Letters Patent .No. have been issued.

What I claim is: r

1. The combination of a lever, a support to which the lever 1s pivoted, means compr1s ing a spring for moving the lever in one Y direction, a rod adjustably connected with the lever and a stop pivoted to the support f and movable'into or out 'of the path of the rod, one portion of the said stop being en- T larged and of sufficient weight to normally hold the stop by the action of gravity out of a rod connected with the lever, a pivoted. step actuated by gravityto normally lie in lines out of the path of therod and manually movable into the path of the'rod when 7 the lever is mover. against the action ofthe spring to a point near the endof its travel.

3. The combination ofa support, a lever pivoted thereto, means comprislng a spring for moving the lever in one direction, a rod adjustably connected with the lever, a piv oted stop manually movable to a position abutting against the end of, the said rod whenthe lever is moved against the action of the spring to'a point *near the end of its travel, the said stop being actuated by gravityto normally lie in a position where it does not interfere rod.

In testimony whereof Iaflix my signature in presence of two witnesses.

V v 7 CHARLES E. WHITE. Witnesses:

TIMOTHY E. CONCANCON, OSCAR TINDAHL.

0011165 05 'this Patent y be obtained for five cents each, by addressing the Commissioner of Patent I Washington, D. C. V p a with the movement of the

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