US1212528A

US1212528A - Lever and locking mechanism.

Info

Publication number: US1212528A
Application number: US93477A
Authority: US
Inventors: Alexander Mccrerey
Original assignee: Individual
Current assignee: Individual
Priority date: 1915-09-22
Filing date: 1916-04-25
Publication date: 1917-01-16
Anticipated expiration: 1934-01-16

Description

A. IVICCREREY.

LEVER AND LOCKING MECHANISM.

APPLICATION FILED APR-25,1916.

1 ,21 2,52. Patented Jan. 16, 1917.

ALEXANDER MCCREBEY, OF HIAWATHA, KANSAS.

LEVER AND LOCKING MECHANISM.

Specification of Letters Patent.

Original application filed September 22, 1915, Serial No. 51,958. Divided and this application filed April 25, 1916. Serial No. 93,477.

To all whom it may concern Be it known that I, ALEXANDER MoCnEREY, a citizen of the United States, residmg at Hiawatha, in the county of Brown and State of Kansas, have invented certain new and useful Improvements in Lever and .Lock1ng Mechanism, of which the following is a specification.

This application is a division of an application filed by me September 29, 1915, Serial No. 51,958, and relates particularly to a lever and locking and unlocking mechanism originally shown, described and claimed in an application filed by me May 25, 1915, Serial No. 30,404.

The invention forming the subject-matter of the present application is illustrated in the accompanying drawings in whlch:

Figure 1 is a perspectlve view of the mechanism showing the same appl ed to a plow; Fig. 2 is a detail side elevation of a part of the mechanism; Fig. 3 1s a rear end elevation; Figs. 4 and 5 are side views showing different positions assumed by the parts in the operation of the IIIVGIItlOIl.

The machine to which I have particularly applied my present invention is a motordriven plow equipped with means for antomatically turning it around a square corner without removing the plow from the furrow or shifting it vertically therein and, in the following description, the mechanism will be considered in its relation to such a plow although I am not to be thereby understood as restricting the fields in which the invention may be advantageously employed. In the motor-driven plow ust mentioned, the plows are carried by a frame upon which is mounted a motor and at the rear extremity of which is a propelling wheel to travel in the furrow formed by the plow, a land wheel being provided at one side and a steering wheel at the front end. The plow beams 91 and 92 each carry a plow 0 and converge toward their front ends where they are connected with means for effectin relative vertical movement between the plovs 's and the frame. A rod 98 connects this same means with an arm 76 projecting from a transversely disposed shaft 72 having a crank portion 73 upon which the plows are mounted, the beam 91 being mounted directly on the said crank portion while the beam 92 is connected therewith by a bracket consisting of the

members

99 and 100. The

said

members

99 and 100 are secured, respectively, to the beams 91 and 92 and converge laterally therefrom to be secured together around the crank portion 73. The arm 76 radiates from the axis of the shaft 72 while an arm 77 radiates from the crank portion 7 3. A shaft 78 is disposed parallel with the shaft 72 and is provided with an arm 79 which is connected by a rod or bar. 80 with the steering mechanism. A lever 81 is mounted loosely upon the shaft 78 and is provided with a latch member 88 which is adapted to cooperate with a toothed segment 83 which is secured to a part of the main frame. A rod 8,4 connects the lever 81 with the arm 77 and this rod has adjustable connection both with the arm 77 and the lever 81. The lever 81 is provided with a bracket or ofi'set portion having a slot 85 which receives the connection joining the rod 84 to the lever. This connection is adjustable in the slot 85 and varies the adjustment of the plows according to the throw of the lever. The adjustable connection of the rod 8 1 with the arm 77 permits the plows to be set at normal working depth when the lever 81 is at or about the central point of its range of movement. Moving the lever forward from this point at once interferes with correct plowing, the purpose of such forward movement, which is always accomplished manually, being strictly and solely to lift the plows entirely clear of the ground so as to clear a stone or to move the machine to another place to begin a new land. The latch 88 holds the lever either in its central or forward position. An arm 86 is loose upon the shaft 78 and is yieldably connected thereto by means of a spring 87 which is of helical form and wound about the shaft, one end of the spring being attached to the shaft and the opposite end enga ing the arm 86. The arm 86 is providef with a tappet 89 which is mounted thereon so as to be projected into or out of the path of the latch 88 and is provided with an inclined upper edge adapted to ride under the lower end of the latch and thereby raise the same. The tappet 89 is preferably pivoted to the arm 86 and may be turned aside so as to clear the latch 88 or may be adjusted to aline with the arm 86 so as to engage the latch 88 and effect disengagement of the same from the toothed segment 83, when the plows are automatically adjusted by power derived from the steering mechanism which pushes rearwardly upon the rod 80. When theshaft 7 8 is turned by the rearward push of the rod 80, the arm 86 slides the inclined upper end of the tappet 89 under the latch 88, thereby raising said latch out of engagement with thesegment 83, and, as the rotation of the shaft continues, the high shouldered end of the tappet will engage against the latch and will force the same and the lever 81 to the extreme rear POSI- tion, whereupon a second latch 82, which is pivoted to the lever, engages the last tooth or'rear end of the segment and holds the le-' ver while the tappet and the arm 86 may return to normal position. llhe latch 82 is preferably constructed so as to be free of the segment on its rearward movement but engage the same on an attempted forward movement of the lever, the rearmost tooth of the segment being extended laterally into the path of the latch. The

latches

82 and 88 are raised by a single handle on the lever 81 but the latch 88 may rise under the influence of the tappet without affecting the latch 82, it being noted, upon reference to Figs. 1, 4 and 5, that the link 102 connecting the handle with the latch 82 is formed with a shoulder 103 and the link 104 carrying the latch 88 is supported loosely on said shoulder. It will also be noted that the latch 88 is mounted within and guided by a housing 105 on the lever.

The rearward movement of the bar 80 is efiected by the steering mechanism when the machine is turned to either side. When the machine turns a corner, the propelling wheel at the rear end of the frame rides up out of the furrow and, consequently, elevates the rear end of the machine. The plows tend to 'rise with the rear end of the machine but this tendency is overcome by the described rearward movement of the rod 80 and the parts actuated thereby so that the plow. remains at the bottom of the furrow and remains vertically stationary although there is a relative vertical movement between the plow and the frame caused by the rear'end of the frame rising. As the machine returns to straight-ahead position, the arm 86 will return to normal position but the lever will remain locked in 1ts rear position until the driving wheel drops into the furrow back of the plow whereupon the lever is returned by hand to the normal position.

Having thus described the invention, what is claimed as new. is:

1. In combination, a shaft, an operating lever connected with the shaft, a toothed segment, a latch mounted upon the operating lever and adapted to engage the toothed segment, a tappet adapted to release the gage the latch from the toothed segment to' admit of the operating lever and shaft moving, and means for operating the tappet.

3. In combination, a shaft, an operating lever mountedupon the shaft, a toothed segment, a latch mounted upon the operating lever and adapted to engage the segment, a second latch mounted upon the lever and adapted to engagethe rear end of the segment, a tappet adapted to raise the firstmentioned latch to release the same from the segment, and means for operating the tappet.

4. In combination, a shaft, a lever mounted upon the shaft, a toothed segment, a latch mounted upon the lever and adapted to engage the segment, a second latch pivoted to the lever and adapted to engage the rear end of the segment, a tappet having a yieldable connection with the shaft and adapted to'engage the first-mentioned latch to re segment, and means for rotating the shaft.

5. In combination, a shaft, a lever mounted upon the shaft, a segment, a latch mounted upon the lever and adapted to engage the segment, a second latch pivoted to the lever and adapted to engage the rear end of the segment, a tappet carried by the shaft and constructed to ride under the first -mentioned latch to release the same from the segment and, to engage the side of said latch whereby to move the latch and the lever rearwardly, and means for rotating the shaft.

6. In combination, a fixed segment, a lever mounted loosely concentric with the segment, means for normally locking the lever to the segment, a trip mounted loosely concentric with the segment and arranged to release said locking means and move the lever from the normal position, means for actuating the trip and means for preventing return of the lever to normal position while permitting return of the trfilp In testimony whereof I a x my signature.

ALEXANDER McGREREY. [1,. s.]