US326984A - Device for starting the dead-wheel in mutilated gears - Google Patents

Description

(No Model,)

M. M. HOOTON.

DEVICE FOR STARTING THE DEAD WHEEL IN MUTILATED GEARS.

No. 326,984. Patented Sept. 29, 1885.

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DEVICE FOR STARTING THE DEAD-WHEEL lN MUTILATED GEARS.

SPECIFICATION forming part of Letters Patent No. 326,584, dated September 29, 1885.

(No model.)

To all whom it may concern-.-

Be it known that I, hIARSENA M. HOOTON, 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 Devices for Starting the Dead-Wheel in Mutilated Gears, of which the following is a description.

This invention relates to improvements in mutilated gear-wheels, in which the dead or mutilated wheel is intermittingly operated by a live or continuously-operating drivewheel, which has a full set of teeth.

'Prior to my invention the dead-wheel has been actuated at regular intervals by means of a stud or other projection on the live-wheel coming in contact with some fixed projection on the dead-wheel, the result being that after the mutilated portion of the dead-wheel has been brought in oppositon to the livewheel, so as to effect a stoppage on the part of the dead-wheel, the live-wheel cannot make more than one complete revolution before it will again start the dead-wheel, so as to cause the mutilated part of the latter to pass the livewheel and again bring the teeth of the two into mesh.

The object of my invention is to provide means by which the dead or mutilated gearwheel can be started at any time without reference to the number of revolutions or parts of a revolution which the live-wheel may have performed. In this way while the deadwheel can be brought to a stop each time it has performed a revolution or after it has madea part of a revolution, according to the number of its mutilations, it can nevertheless be instantly started at any moment,thereby rendering the mutilated wheel susceptible of a wide range of application.

The essential features of my invention consist in providing the dead-wheel with a movable tooth, slide, or latch susceptible of being thrown into engagement with the live-wheel. at any instant during the time the mutilated portion of the dead-wheel is in opposition to the live-wheel, whereby the instant such engagement takes place thelive-wheel will turn the dead-wheel so as to again bring the teeth of both wheels into mesh.

Other features consist in means for normally holdingthe tooth or its equivalent device in a back position until it is desired to throw it forward, and means for operating the tooth or latch, either automatically or at will, so as to throw it into engagement with the livewheel.

In the annexed drawings, Figure 1 represents a side View of a mechanism embodying my invention. Fig. 2 is a section on line as x of Fig. 1. Fig. 3 is a section also on the line 00 m, but with the movable tooth countersunk in the dead-wheel so as to engage the teeth on the periphery of thelive-wheel when thrown forward, as shown at S.

Referring by letter to the several figures of the drawings, in which likeletters denote like parts, A indicates the live or driving wheel, which is provided with a full set of teeth, and C the mutilated or dead wheel, which may be provided with one or more mutilations, I), if desired, the wheel herein shown being mutilated at one point only. At the point of its mutilation the dead-wheelis provided with a movable tooth, E, arranged to be projected from the wheel at the point where the usual teeth of the wheel are removed.

In Figs. 1 and 2 the live-wheel is provided on one side with an annular series of studs, B, or other suitable projections. When the movable tooth E of the dead-wheel is thrown out to a certain distance, its outer end stands in the way of these studs on the live-wheel, so that the first one coming in contact with the movable tooth or latch on the dead-wheel will turn the dead-wheel enough to bring the com mon teeth of the two wheels into mesh. On the other hand, means are provided for normally holding the movable tooth or latch on the dead-wheel back to an extent sufiicient to allow the live-wheel to turn freely without causing the studs B to strike the movable tooth or latch, so that when the mutilated part of the dead-wheel comes around to the live-wheel it will again stand still until means are again called into action for throwing the movable tooth forward into the path of the studs on the live-wheel, as before.

The movable tooth E (shown in Figs. 1 and 2) is arranged to slide radially with reference to the dead-wheel, upon which latter the movable toothis retained by means of a suitable casing or keeper, F. The sliding tooth is normally held back in its keeper by some suitably-located spring, and is thrown forward from its back position by means of a lever, j, which is pivoted upon one side of the deadwheel and connected with the sliding tooth by any suitable yielding connectionsuch,for eX- ample,as a pin, 9, on the inner end of the tooth extending out through the elongated opening h in the keeper, and engagingin aslot, 70, formed in one end of the leverj. in the keeper permits a suitable extent of end movement on the part of the sliding tooth, while the pin-and slot connection between the sliding tooth and the lever permit the lever to oscillate about its pivot on the dead-wheel,

and effect the required end movement on the part of the sliding tooth.

The leverj is pivoted toward its middle upon the dead-wheel,and is preferably arranged so as to lie within the circumference of the latter, so that when studs B are used on the live-wheel the lever j will not come in contact with them. The leverj is normally controlled by a spring, 111, secured at one end to a stud, m, or other fixture onthe dead-wheel.

The free end of this spring bears against the outer end of the lever j, and its force is controlled by a set-screw, a, having a hearing at one end in any suitable block or projection on the dead-wheelf This spring serves as the initial controlling means for normally holding the sliding tooth E in its back position, and to this end the spring so acts against the lever j as to normally hold the lever in position to keep the sliding tooth in its back position; but it will be evident from the end to be attained that a like result could be attained by applying a spring directly to the tooth E in any suitable way.

The lever j is operated to project the sliding tooth by means of an oscillating lever, O, pivoted to any suitable support and arranged so that one end shall normally lie in the path of the outer end' of the lever j. Assuming the two levers to be in the relative positions shown, the sliding tooth will be in its back position, and the teeth of the live-wheel A will freely pass the mutilated portion of they dead-wheel O, and the studs on thelive-wheel pass by the toot-h without engaging the same. it, now, the lever O is from any cause or source or by any mechanism whatever turned about its pivot, so as to turn the lever j in a direction to throw the sliding tooth forward so that its outer end will be in the path of the studs B, one of the studs will engage with the tooth, and thus the dead'wheel be started into mesh with the live-wheel, as above described. During this action the lever 0 turns the lever j against the resistance of the spring m, so that as soon as the lever j clears or slides off the lever O, the force of the spring will restore the lever j and the sliding tooth to their normal position. At the completion of the revolution of the dead-wheel its mutilatiou, again coming opposite the live-wheel, will necessarily take the two wheels out of gear, thus leaving the dead-wheel at a standstill, while the live-wheel continues to revolve.

The opening or slot- This position brings the outer end of'lever j again in contact with one end of lever O, which is held in the path of the outer end of lever j by any'suitable devicessuch as the pins 00 and y-which serve as stops to limit its motion, so that it cannever be thrown entirely out of the path of the leverj when the dead-wheel is at a stand.

Obviously, where the dead-wheel is mutilated at more than one place, a starting mechanism such-as the one above described can be provided for each one of the mutilations, and one lever, employed for all of them.

Where coarse or slow-moving gears are used,

the studs B on the live-wheel can be dispensed with, and the common teeth of the live-wheel employed to subserve the purpose of said provided with a radial channel, S, running back from its mutilated portion, and the sliding tooth E is arranged to work in said channel, in which case the keeperF can be formed by a slotted plate secured on the dead-wheel; or, in other words, the keeper shown in the preceding figures will be simply flattened down. Under this arrangement the sliding tooth will be normally retracted clear of the teeth of the live-wheel A, and when thrown forward will engage with one of said teeth, and thus cause the dead-wheel to be rotated sufficiently to bring the common teeth of the two wheels into mesh.

.The mutilation D of the dead-wheel should be of such size and shape as to permit the live-wheel to revolve freely without touching the dead-wheel, as represented in Fig. 1,

and only so much of the teeth of the dead- 4 wheel should be cut away as to make this.

possible. In this way the mutilation of the dead-wheel will be somewhat concave, to suit the convexity of the teeth of the live-wheel.

The lever O can bespring-controlled, and can be operated from any source. Thus, for example, it could be operated from the sheafgage on a grain-binder or from devices in measuring apparatus or other machines in which an intermittent motion is required, and where at any moment it may be desirable to instantly start the dead-wheel, so as to cause through its motion the operation of certain other mechanisms which, through the medium of mutilated gears, have been temporarily kept from action.

It will be observed that, by means such as herein described, the dead'wheel can at any time during the revolution ofv the live-wheel be instantly started by simply throwing for ward the sliding tooth on the dead-wheel, so

as to bring it into engagement with the livewheel. 1t is obvious that the result is the ICC IlO

tulated Wheel resulting from the cutting away or absence of a part of its teeth is temporarily supplied by the substitution of the sliding tooth or latch for the time, and as soon as its function is performed the tooth or latch is returned to its back position leaving the mutilation complete, as before.

I have not deemed it necessary to show a tooth movable in any other way than sliding longitudinally, since it will be so apparent that a spring-controlled tooth pivoted on the dead-wheel could be made to perform the same function as the longitudinally-sliding tooth.

\Vhat I claim as my invention is 1. A gear having at one point only of its periphery a mutilation of one or more of its teeth, in combination with a single movable tooth mounted thereon, substantially as described.

2. Agear having at one point only of its periphery a mutilation of one or more of its teeth, in combination with a single tooth mounted thereon and movable on a line radial to the axis of said gear, substantially as described.

3. A mutilated gear and a movable tooth thereon, in combination with the spring actuating said tooth, substantially as described.

4. A mutilated gear and a movable tooth thereon, in combination with the spring actuating said tooth and a screw for adjusting the tension of said spring, substantially as described.

5. The mutilated gear and the sliding tooth, in combination with the lever pivoted on said gear and engaging the sliding tooth, substan tially as described.

6. A gear having one or more of its teeth removed, in combination with a perfect gear and a movable tooth on the mutilated gear for engaging said perfect gear, substantially as described.

7. A perfect gear and one or more studs on the face thereof, in combination with the movable gear and a movable tooth thereon for engaging said studs, substantially as described.

8. The mutilated gear and the sliding tooth thereof, in combination with a connectinglever, O, and a connection between said lever and tooth, substantially as described.

MARSENA M. HOOTON.

In presence of CHAS. B. MELROSE, F. L. BROWN.

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