US1283430A - Apparatus for converting reciprocating motion into continuous rotary motion. - Google Patents

Description

H. E. WARREN.

APPARATUS FOR CONVERTING RECIPROCATING MOTION INTO CONTINUOUS ROTARY MOTION.

APPLICATION FILED NOV. 2'. 19I5.

Patented Oct. 29, 1918.

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H. E. WARREN. APPARATUS FOR CONVERTING RECIPROCATING MOTION INTO CONTINUOUS ROTARY MOTION.

APPLICATION FILED NOV. 2.1915- Patented Oct. 29, 1918.

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UNITED STATES PATENT oEEIoE.

HENRY E. WARREN, OF ASHLAND, MASSACHUSETTS, ASSIGNOR TO WARREN CLOCK COMPANY, OF ASHLAND, MASSACHUSETTS, A CORPORATION OF MAINE.

MOTION.

Specification of Letters Patent.

Patented Oct. 29, 1918.

Original application filed November 30, 1914, Serial No. 874,629. Divided and this application filed November 2, 1915. I Serial No. 59,190.

To all whom it may concern:

Be it known that I, HENRY E. WARREN, a citizen of the United States, residing in Ashland, in the county of Middlesex and State of Massachusetts, have invented an Improvement in Apparatus for Converting Reciproeating Motion Into Continuous Rotary Motion, of which the following description, in

connection with the accompanying drawings, I

is a specification, like characters on the drawings representing like parts.

This application is a division of my application Serial Number 87 l,629 filed November 30, 1914.

The present invention relates to apparatus for directly transferring motion of reciprocation into motion of continuous rotation.

To this end I employ a rotatable member, a reciprocating member which is mechanically disconnected from said rotatable member, and means for magnetically coupling said members together to. enable the rotatable member to be rotated by said reciprocating member.

The means for magnetically coupling the jreciprocating member preferably consists of polarized rotatable member having one pole capable of .revolving about the axis of said member, and permanent magnets cooperating with said polarized member and one of which is movable with the reciprocating member so as to produce a magnetic field, in which considered with. relation to the axis of the rotating polarized member there is a virtual polar rotation.

Figure 1 represents a sufiicient portion of an apparatus embodying this invention to enable it to be understood.

. Fig. 2, a diagrammatic view to illustrate centric with the axis bb and has fast on it a small worm 0 or equivalent device for transmitting continuous rotary motion to a gear d, which constitutes one form of rotatable member. The needle a is magnetized by means of a permanent magnet 10, which also serves as a nearly frictionless bearing for the upper end of the needle'a, by attracting the pointed upper end of said needle against its lower pole face. The lower end of the needle may be main tained in its proper relation to the axis bb in any suitable manner. It may be preferred to employ the permanent magnet 10 so as to inductively magnetize the needle a, but it is not desired to limit the invention in this respect, as the needle a may be made of hard steel and permanently magnetized, and mounted in suitable bearings to maintain it in the proper relation with respect to the axis of rotation bb.

Rotation of the needle or is efi'ected by two horseshoe magnets 20, 21, both of which as represented in Fig. 1 are attached to a member 22, which is capable of being reciprocated with relation to the needle a. In Fig. 1, the magnets 20, 21, are attached to a bracket 23, which is attached to the member 22, so that the said magnets are in a plane and said magnets are arranged with relation to the circular path in which the lower end of the needle -a is moved, so as to form around a circle alternate magnetic poles marked N. S. N. S. The lines of force from the magnetic poles ass across the four air gaps'wvhioh. are thus ormed.

S longas the pendulum is at rest, th

pole'N of the needle a will beattracted by and will point toward one of the south poles 'S-or S of the magnets 20, 21. Assume that the member 22 is at rest and that the needle a is attracted by the pole S of magnet 20 as represented in the position of the magnets marked No. 1 in Fig. 2. Also assume that the member 22 is put in motion. Just as soon as the member 22 begins to swing to the right, the N pole of the needle a will be deflected in a counter clockwise direction in the effort to continue pointing toward pole S and will be moved into the position No. 2.

Ve soon, however, the member 22 will reac a position when the repulsion from pole N and the attraction of pole S of magnet 21, will overpower the attraction of pole S and the repulsion of pole N of magnet 20, and the pole N of needle a will continue its counter-clockwise rotation and reach the position No. 3. For any further 5 motion of the member 22-toward the right, the poleN of the needle a will continue to point toward the pole S, but as the member 22 reverses its motion and begins to swing back again toward the left, the pole N of needle a'will continue its counterclockwise rotation, reaching successively the positions Nos. 4 and 5. Further left hand motion of the member 22 willbring about the strong repulsion of pole N of needle (1 by 1 pole N and the attraction by pole S, so that the pole of the needle (1 will take the position No. 6, and as the left hand motion of the member 22 continues, the magnetic forces will'continue the contra-clockwise motion of the needle a until it reaches the position No. 7, which is 180 from the position No. 3. The member 22 now swings back again toward the right, and the pole N of the needle a will continue rotary motion and 25 will pass through the position No. 8 to position No. 1, the point of beginning.

It will be observed, that a complete reciproca'tion or oscillation of the member 22 has brought about a single rotation in a counter clockwise direction of the needle (1, and it therefore follows, that for any number of,

complete reciprocations or oscillations of the member 22, there will be the same number of rotary turns of the needle in a single direc- 85 tion. By reversing the magnetic poles of the needle (1, the needle a would be rotated in the opposite direction, that is, clockwise.

It will thus be seen that the member 22 is not mechanically connected with the gear 40 d, but is magnetically coupled therewith, consequently the member 22 or the gear can be removed for the purposes of shipping, or moving from one place to another, andagain placed in position by unskilled labor wlthout any danger of injuring or derangmgthe parts or getting them out of ad ustment.

The member 22 may be reciprocated in any suitable or desired manner.

. In the arrangement shown in Figs. 1 and 2, the permanent magnets 20, 21, both move with the member 22, and while this arrangement may be preferred, it is not desired to limit the invention in this respect, as only one of the magnets may be secured to the member 22 to move therewith, after the manner shown in Fig. 3, wherein the magnet 20 is shown as movable with the member 22 and the magnet 21 is stationary, being so cured to a suitable support 24.

' In the arrangement shown in Fig. 3, the

. magnet 20 is made larger than the magnet 21 and is located at a lowerlevel, so that its poles can pass under the poles of the smaller magnet 21. p

The needle a has its upper end attracted to the under side of the pole N of the magnet 21, while its lower end is passed through a bracket 36 attached to the pole N of said magnet, and is provided with a crank or arm 37 which constitutes the movable N pole of the needle. The needle a is provided with the worm c which is designed to engage the gear d.

The needle a is rotated clockwise asrepre sented in Fig. 4, wherein positions Nos. 1 to 8 of the movable magnet 20 are indicated.

The relation of the poles N, S, of the moving magnet 20 to the poles N, S of the fixed magnet 21 is such that when the magnet 20 is in its extreme right hand position No. 3, in Fig. 4, the pole N of the needle 0 will be attracted strongly by the pole S of the magget 21 and will take up the position shown in As the reciprocating member 22 swings toward the left and reaches the position No. 4, the repulsion of pole N, which is nearer the plane of the pole N of the needle a than is the pole S of magnet 21, will move the needle slightly in a clockwise direction, and this repelling efl'ect will continue to rotate the needle in the same direction, as the member 22 swings farther toward the left as shown by positions Nos. 5 and 6. Finally a position of the pole N of needle a will be reached, whereby the combined repulsion of pole N of magnet 20 and the attraction of pole S of said magnet, will completely overpower the attraction of pole S of magnet 21 and will force the pole N of the needle to move into the position No. 7. As the member 22 swings backagain toward the right, the pole N of the needle in its effort to follow the pole S will continue its motion in a clockwise direction, passing successively through positions Nos. 8, 1 and 2, and finally the poles N S of magnet 20 will have'moved far enough away from the pole N of the needle, so that the attraction of the pole S of the fixed magnet 21, will exceed the combined attraction of the pole S and the repulsion of the pole N of the movable magnet 20,

and the pole N of the needle will be turned into the position No. 3, having now completed one revolution while the member 22 has made one complete reciprocation-or oscillation. Obviously this action will be repeated for every complete reciprocation or oscillation of the member 22, so that the'rotations of the needle will measure the reciprocations or oscillations of the member 22.

In the arrangements shown in Figs. 1 and 2, both magnets 20, 21, are movable with the reciprocating member 22, whereas in Figs. 3 and 4, only one magnet as 20 is movable with the member 22.

In bothcases, it will be observed that the magnets 20, 21, cooperate with the magnetized needle to form a magnetic coupler for operatively connecting the oscillating or reciprocating driving member, herein shown as the bar 22, with a rotatable member, herein shown as the gear (1, but it is not desired to limit the invention to the particular members herein shown.

The needle constitutes a rotatable member of the magnetic coupler and a rotatable armature for the reciprocating or oscillating member of the magnetic'coupler, and while it may be preferred to make the rotatable member in the form of a needle, it is not desired to limit the invention in this respect.

Claims:

1. In an apparatus for converting reciproeating to rotary motion, in combination, a magnetically polarized rotatable member of which one pole can revolve about an axis, permanent magnets cooperating with said polarized member, a reciprocating member with which one of said magnets moves so as to produce a magnetic field, in which, considered with relation to the axis of the rotating member, there is a virtual polar rotation to effect rotation of said member.

2. In 'an apparatus for converting reciprocating to rotary motion, in combination, a

reciprocating driving member, a rotary member driven by said reciprocating member, and magnetic means for magnetically coupling said driving and driven members together to efi'ect continuous rotation in one direction of said driven member by said 4. In an ap aratus of the character de-- scribed, in com ination, a rotatable member, a reclprocatln'g member mechanically dlsconnected from said rotatable member, and

means for magnetically coupling said members together to enable the rotatable member to be rotated continuously in-one direction by said reciprocating member without contacting therewith.

5. In an apparatus of the character described, in combination, a magnetic coupler comprising a rotatable polarized armature having'one of its poles rotatable about the axis of said armature, and a.reciprocating magnetic member mechanically disconnected from said polarlzed armature and cooperating with said pole to efi'ect continuous ro-' tary movement of said armature in one direction.

In testimony whereof, I have signed my name to this specification.

HENRY E. WARREN.

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