US320706A

US320706A - Mechanical movement

Info

Publication number: US320706A
Authority: US
Publication date: 1885-06-23
Anticipated expiration: 1902-06-23

Description

(No Model.) 2 Sheets-Sheet 1. H. SOHULZE-BERGE.

MECHANICAL MOVEMENT.

Patentedz June 23, 1885.

12* Mum 2 Sheets-Sheet. 2.

(No Model.)

H. SOHULZE-BERGE. MEGHANIGAL MOVEMENT.

Patented June 23, 1885 Q Aflorney:

UNITED STATES PATENT OFFICE.

HERMANN SCHULZE-BERGE, OF ROCHESTER, PENNSYLVANIA.

MECHANICAL MOVEMENT.

SPECIFICATION forming part of Letters Patent No. 320,706, dated June 23, 1885.

Application filed February 6, 1885.

Q0 aZZ whom, it may concern.-

Be it known that I, HERMANN ScHULZE- BERGE, of Rochester, in the county of Beaver and State of Pennsylvania, have invented a new and useful Improvement in Mechanical Movements, and I do hereby declare the following to be a full, clear, and exact descrip tion thereof.

My invention relates to an improvement in eccentrics; and it consists in a combination of mechanical devices by which a slide mounted upon a revoluble shaft or axle, and capable of transmitting an eccentric motion therefrom, can be caused to move adjustably, even while the shaft is in revolution.

My improvement is illustrated in the accompanying drawings, in which Figure l is a plan View of the adjustable eccentric. Fig. 2 is a vertical section on the line :0 a: of Fig. 1. Fig. 3 is an edge view. Fig. 4 is arear view, partly in section, on the line x x of Fig. 3. Fig. 5 is a front view of a modification. Fig. 6 is a side view of the same, partly in section. Fig. 7 is a View similar to Fig. 6 when the parts have assumed different relative positions.

Like letters of reference indicate like parts.

In the drawings, a represents the rotary shaft or axle of a machine. A portion of its periphery is squared or provided with a rigid block, a, on which is mounted a radiallyslotted slide or disk I). (See Figs. 1 and 2.) On this block 0 the slide is movable in its slot at right angles to the shaft.

Pivotally attached to the slide 1) at a point, e, is a pair of levers, d. A second pair of levers, f, is also pivotally attached to the squared portion of the shaft a, as at g. The levers d andf connect pivotally at h, from which point a third pair of levers, t, reaches to a sleeve, 7r, which is movably mounted on the axle a. The pair of levers i connect pivotally with the sleeve is at points Z and Z, which are situate on the sleeve opposite each other. From this construction it becomes evident that if sleeve is be forced toward the disk I) that the angle formed by the levers d and f must increase, and that the slide 1) is forced to move away from its prior location. If the center of the sliding disk I) be coincident with the center of the axle a, as shown in Figs. 1, 2, 3, and 4, it becomes evident that the spreading of the levers (l and f will cause the disk b to assume the (No model.)

functions of an eccentric, and that as the angle between the levers d and f approaches one hundred and eighty degrees the eccentricity of the disk will grow correspondingly. The pur-- pose of having double levers d, f, and t is to give steadiness of motion. If convenient, only one of each need be used. The sleeve is is mounted upon the shaft a so as to be movable thereon lengthwise, but is prevented from independent rotation by means of a feather, which fits within a longitudinal and superficial keyway, m, on the shaft. Thesurface of the sleeve is is grooved, as shown in Fig. 2, in which groove an annular collar, n, is fitted loosely, so that the sleeve can revolve with the shaft a, while the collar or ring a does not partake in the revolving motion. To this end the ring or collar a is provided at two opposite places with studs or pivots 0 0, as shown in Figs. 2 and 4, which studs 0 are pivoted to the sides of a yoke or lever, p. The yoke 12 is provided on one end with a lever-handle, 1)", (see Figs. 3 and 4,) while the other end of the yoke connects pivotally with any firm or rigid point. In the case illustrated in Figs. 2, 3, and 4t it is pivoted to a part of the frame or bearing q of the shaft a by a pivot, 1'. If, now, the handle 1) of the yokep be moved around the pivot r, the sleeve is forced to move along the shaft to, and to spread the toggle-levers d and f, as before described. By these means the slide or disk b is capable of being made to change into an eccentric of adj nstable throw at any time, whether the axle a be in motion or not. The distance of motion of the handle p will determine the eccentricity of the slide or disk I), and by fixing the handle in any desired position the eccentricity may be made permanent.

I have illustrated a device for this purpose in Figs. 6 and 7, which will be explained hereinafter.

The eccentric throw of the disk I) when it is properly adjusted and is rotated by the shaft a is communicated to the parts of a machine in any suitable manner. I

In the first four figures of the drawings I have shown an annular cam-yoke, S, which is fitted loosely around the disk b, and is provided with a rigid arm, S. An eccentric rotation of the disk I) will communicate a reciprocating and an oscillating motion to the arm S, as will be readily intelligible.

In place of the knee-lever arrangement shown for eccentrically adjusting the disk 1) upon its shaft, it is obvious that other wellknown mechanical devices, such as are used in friction-clutches, can be employed.

The modification shown in Figs. 5, 6, and 7 differs from that before described only in the difference in manner of transmitting motion from the adjustable slide I). In these figures the slide b is shown movably mounted in a radial slot, 0, in a crank-arm, c, which is affixed to the end of the rotary shaft a. The levers d are pivoted to the slide 1), and the leversf to the arm 0 at g. The adjustable slide is moved in its slot to a greater or less distance from the axis of the shaft a by means of the Sliding collar 7t and the mechanism already described. Motion is transmitted from the eccentric by means of a crank-pin, I)", or other suitable device. The preferable means for adjusting and fixing the eccentricity of the slide 1) is shown in Figs. 5, 6, and 7. The yoke 1) being pivoted at')- to the frame g, which forms a bearing for the shaft a, is pivotally connected at its lower end, 1', to a threaded nut, u. Into this nut ugearsaserew, c, which is ball-jointed to the frame q, as shown at w in Fig. 6, and 'is operated by a hand-wheel, By turning thewheel w the shaft is rotated, and the nut to thereby screwed toward and away from its end, thus moving the sleeve is and regulating the throw of the eccentric. In this way the eccentricity can be fixed with great accuracy. 7

My improvementis adapted to use in alarge nu inb'cr of machines, such as sewing-machines and others. It is especially useful when the throw of the eccentric is to be changed, when the machine is running ata high rate of speed without slacking or stopping the engine.

This may be done manually by means of. the

lever or yoke 12, or automatically by actuating the yoke from a part of the machine so as to change the throw at determined periods.

In applying this adjustable eccentric to regulating the steam-inlet for steamengines, &c., the handle of the yoke p may be set in connection with a governor so as to cause the governor to adjustand regulate automatically the larger or smaller degree of eccentricity of the disks.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. As an adjustable eccentric, a slide connected with a rotary shaft and movable toward and away from the axis thereof, in combination with a non-rotatory yoke or lever capable of moving the slide during rotation of the shaft, said slide being capable of transmitting motion, substantially as and for the purposes described.

2. As an adjustable eccentric, the combination, with arotary shaft, of a slide capable of rotating therewith, and movable toward and away from its axis, and provided with a circular surface for transmitting motion, leverarms connecting with said slide and with said shaft, and capable of impartingthe said motion to the slide, and a non-rotatory yoke for actuating the said levers, substantially as and for the purposes described.

3. As an adjustable eccentric, the combination,with a rotatory shaft, of a slide capable of rotation therewith and movable toward and away from its axis, and provided with a circular surface for transmitting motion,alever-arm connecting with said slide and capable of imparting said motion thereto, substantially and for the purposes described.

4. As an adjustable eccentric, the combination,with a rotatory shaft, of a slide capable of rotation therewith and movable toward and away from its axis, and provided with a circular surface for transmitting mot-ion, lever arms connecting with said slide and with said shaft and capable of imparting the said motion to the slide, a sleeve mounted on the shaft, rotatory therewith, movable longitudinally thereon, and connected with said lever-arms, and a non-rotatory yoke for actuating said sleeve, substantially as and for the purposes described.

5. The combination, with a rotatory shaft, of a slide capable of rotation therewith and movable towards'and away from its axis, and provided with a circular surface for trans mitting motion, lever-arms connecting with said slide and with said shaft and capable of imparting the said motion to the slide, a sleeve mounted on the shaft, rotatory therewith, movable longitudinally thereon,and connected with said lever-arms, a collarloosely mounted on said sleeve so that the latter may rotate therein, and a non-rotatory yoke connected with said collar and capable of moving the collar and the sleeve, substantially as and for the purposes described.

6. The combination, with a rotatory shaft, ofa slide capable of rotation therewith and movable toward and away from its axis, and provided with a circular surface for transmitting motion, lever-arms connecting with said slide and with said shaft, and capable of imparting the said motion to the slide, a nonrotatory yoke for actuating said levers, and a screw-shaft gearing into said yoke and capable of moving the same by rotation of the shaft, substantially as and for the purposes described.

In testimony whereof I have hereunto set my hand this 5th day of January, A. D. 1885.

I-IERMANN SOHULZEBERGE.

\Vitnesses:

W. B. OoRwIN, T. \V. BAKEWELL.