US796486A - Mechanical movement. - Google Patents

Description

PATENTED AUG. 8, 1905.

W. G. WINPIELD. MECHANICAL MOVEMENT,

APPLICATION FILED Bil-10.5, 1904.

MIL 11 5.

1 INVENTDR m 0% B ATTYW 1444 ATTEST UNITED STATES PATENT OFFICE.

WVILLIAM O. WINFIELD, OF WARREN, OHIO, ASSIGNOR TO THE WINFIELD MANUFACTURING COMPANY, .OF WARREN, OHIO, A CORPORATION.

MECHANICAL MOVEMENT.

Specification of Letters Patent.

Patented Aug. 8, 1905.

Application filed December 5, 1904. Serial No. 235,437.

To a whom, it flea/y concern:

Be it known that I,WILLIAM C.WINFIELD, a citizen of the United States, residing at Warren, in the county of Trumbull and State of Ohio, have invented certain new and useful Improvements in Mechanical Movements; and I do declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to mechanical movements; and the object of the invention is to provide a mechanism whereby a continuous rotary movement of one part is converted into a rotary reciprocating movement of another part, thus adapting said mechanism to washing-macliines,churns,and other devices wherein or whereby a given part is rotated in one direction and then in the opposite direction, and so on alternately and continuously, substantially as shown and described, and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a plan view of my improved mechanism on line a; m, Fig. 2; and Fig. 2 is a side elevation of said mechanism on a line corresponding to line y Fig. 3. Fig. 3 is a central sectional elevation of the mechanism on line .2 2, Fig. 2.

In the foregoing figures the operating parts hold the same relation to each other in all the views, and, as thus shown, A represents the drive or power shaft, and B the driven shaft, and the mechanism for converting the continuous rotary movement of the power or drive shaft A into the reciprocating rotary movement of the driven shaft B is comprised in the yoke O, having a pin-toothed rack D mounted thereon and provided with internal gear-teeth c in arc arrangement and engaging mutilated gear E on shaft B. Over or upon rack-teeth D is a segmental channel at, which is engaged by a depending roller g on an arm Gr, sleeved to rotate freely about shaft A, on which it is mounted over a sleeve portion projecting upward from the hub h of pinion H, splined on the lower end of shaft A. However, said arm might be engaged directly upon or about shaft A and is free to rotate about its bearing, while gear H is keyed or splined to shaft A, so as to rotate therewith and communicate the power to rack D.

The inner rack-teeth c are in constant engagement at one point or another with gear E, and as this gear is fixed upon shaft B power is transmitted to said shaft through the said several interengaging parts from drive-shaft A, and said operation is continuous and positive but reciprocal, whereby shaft B is caused to rotate first in one direction and then in the other, and so on, while the operation lasts. This reciprocal movement is brought about by the limitations put upon the yoke C and whereby it is permitted. to swing only a limited distance in one direction before it is reversed and caused to swing a like distance in the opposite direction, and this is accompanied by a further swinging of the yoke from one sideto the other of shaft A, as will now be seen. Thus the said yoke has a compound pivot at N, which is equivalent to a universal joint in.

the bottom of the outer supporting-frame F, and as said yoke is caused to swing edgewise by the leverage applied through gear H on rack D it will swing in one direction until the end of said rack is reached and disengagement would occur but for the detention through arm G and its roller running in walled channel d. These parts prevent disengagement between gear H and rack D, or rather maintain engagement when the end ofthe rack has been reached, and as pinion H continues to rotate it climbs around the end of rack D and carries it forcibly to the opposite side, thus causing yoke O to swing bodily or broadside over to the opposite side relatively to shaft A. Now, however, the teeth of pinion. H are traveling in the opposite direction from that traveled before, and'this causes yoke C to swing edgewise back to the other extreme of its movement, when it is again reversed and thrown broadside over to where it was in the first place. and so on, continually. In its travel broadside from one side to the other the yoke O traverses the mutilated gear from one end to the other, and the said gear is constructed with one or more continuous arc-shaped teeth 6', on which the shift of the yoke laterally occurs, said gear E being centrally over the pivot-point of the yoke, as shown. The other teeth 6 of said gear are shortened to the immediate needs of the work, but might be of full length like, if preferred. The lengthwise arc shape of gear E adapts it to the changed positions of yoke C from one position to the other in respect to shaft A.

The operation of the mechanism will be understood from the foregoing description. Shaft A may be rotated by any suitable means,

as by a crank or the like or even by power, This imparts a rotary movement to gear D and a rocking or edgewise-tilting movement to yoke G on its pivot n, and as said gear and shaft have a fixed bearing in frame F and the yoke C is operatively tied thereto by arm G it follows that said yoke must move or tilt first in one direction and then in the other, according to its position or relation to gear D. The extent of its tilting edgewise in either direction is the range of racks D and c, which correspond, and the change from one direction of movement to the other is around the ends of said rack D, as already described. In all these movements the roller g runs in channel or guideway (Z and maintains the planetary relationship of the traveling parts. A roller is used to reduce or avoid friction; but other means might be devised for holding the yoke in working relation to or with rack D, and any equivalent of the mechanism shown for these purposes may be adopted and not depart from the spirit of the invention.

The several operating parts are shown herein as supported by or upon a metallic frame F; but the style or form of the support may 'vary with the particular use to which the intop, drive mechanism comprising a shaft and a gear thereon in mesh with one of said racks, a drivenshaft and a gear thereon in mesh with another of said racks, and a loosely-mounted device in continuous engagement with the top of said yoke and adapted to hold the yoke in operative connection with the drive mechanism, substantially as described.

2. In mechanical movements, a reciprocating yoke having a segmental rack at its top and a guideway above said rack, a drive-shaft and a gear thereon meshing with said rack and a retaining-arm for the yoke having traveling engagement with said guideway, substantially as described.

3. In mechanical movements, a variouslypivoted yoke having a rack at its top and an arc-shaped guideway over said rack, a driveshaft and a gear fixed thereon meshing with said rack and an arm sleeved over said shaft above said gear and having traveling engagement with said. guideway, substantially as described. v

L. In mechanical movements, a variouslypivoted yoke having a segmental rack at its top and a channel over said rack, a drive-shaft and a gear thereon engaging said rack and an arm loosely sleeved over said shaft having a roller running in said channel, substantially as described.

5. In mechanical movements, a driven shaft and a gear mounted thereon having teeth parallel to the axis of said shaft, a yoke pivoted centrally beneath said gear and having an internal rack in mesh with said gear, drive mech anism for said yoke and a rotatably-supported part engaging the top of said yoke and having traveling connection therewith, whereby the yoke is held in constant engagement with the drive mechanism, substantially as de-' scribed. V

6. In mechanical movements, a drive-shaft and a driven shaft and gears on said shafts, a pivoted yoke having racks in mesh with said gears and provided with a walled guideway at its top, and an arm loosely sleeved on the said drive-shaft and having a depending portion engaged in said guideway.

7. In mechanical movements, a yoke variously pivoted at its bottom and provided with a set of segmental racks one above the other at its top and having a curved channel over the upper rack, in combination with a driveshaft and a gear fixed thereon engaging said upper rack, an arm supported by said shaft and a roller thereon engaging in said channel, and an arc-shaped gear-wheel engaging the lower of said racks andover which the said yoke is adapted to swing, substantially as described.

In testimony whereof I sign this specification in the presence of two Witnesses.

WILLIAM C. WINFIELD.

Witnesses:

R. B. MOSER, C. A. SELL.

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