US503122A - Mechanical movement - Google Patents

Description

(No Model.)

s. (T. 13Rc)s11s. MECHANICAL MOVEMENT.

No. 503,122". Alwnjented Aug. 15, 1893,.

cawpa-:veau y" af' UNITED STATES PATENT OFFICE.

SAMUEL GLENVILLE BROSIUS, OF SAVANNAH, GEORGIA.

l M ECHANICAL MOVEM ENT.

SPECIFICATION forming part of Letters Patent No. 503,122, dated August 15, 1893.

Original application filed January 20, 1892, Serial No. 418,721. Divided and application filed December l, 1892, Serial No.

' 453,768. Again divided and this application filed December 29, 1892. Serial No. 456,734. (No model.)

To all whom it mag/concern:

Be it known that I, SAMUEL GLENVILLE BROSIUS, of the city of Savannah, State of Georgia, have invented a new and useful Improvement in Mechanical Motions, of which the following is a specification.

My invention relates to improvements in that class of mechanical motions producing a variable or intermittent motion.

The object of my invention is to accomplish a smooth variable movement by the use of the working and driving eccentrics and their co-operating parts, hereinafter described.

This application was led as a division of two other concurrently pending applications, which Vare now Patents Nos. 492,860 and 492,861, respectively, and in this is broadly claimed a mechanical combination which is illustrated and described in said patents, but more specically claimed therein in combination with other -mechanical devices.

In the accompanying drawings, which illustrate my invention: Figure 1, is an end elevation and a diagram showing the movement of the mechanical motion. Fig. 2, is an elevation of the working parte of the mechanical motion partly in section on the center line and on the line w Like letters of` reference refer to like parts throughout the several views.

As shown in the figures, the eccentric A, rod B2 and yoke B of eccentric B and support or disk R revolve round shaft N, eccentric A and disk R being secured thereto and driven thereby; eccentric B oscillates about said shaft N as a center. The levers F2 and D2 are respectively mounted on the disk R by the journals F and D, and connected by link E2, andare free to oscillate about said journals and rotate with the said disk R. The lever H oscillates about the point H, which is secured stationary with regard to the driving shaft N, and the said lever H is driven at the end H2 by the eccentric A from its yoke A3 and eccentric-rod A4, and is made to oscillate through the are H2, H4, and the end H2 of the lever H is also connected to and drives the connecting-rod I2 by its journal I. The said rod 12, by its journal I', oscillates the eccentric B through the arc I2 I4 by means of its lug B2. Said eccentric B is loosely mounted on the driving shaft N oscillating about it, while the eccentric A is secured to the shaft N which rotates with it and is driven by it. The shafts F4 and D4 are mounted in a disk R, and are the pivotshafts by which the levers F2 and D2 are held in place, and the motion may be taken from either of these shafts.

The operation is as follows: Let shaft N, with disk R and eccentric A, which are mounted thereon, revolve in the direction shown by the arrow l. Then shaft N rotates as shown by arrow 5, driving eccentric A rotates as shown by arrow 2, and working eccentric B will oscillate as shown by arrows 3 and 4, as hereinafter described. Let the centers of eccentrics A and B be located as shown at A2, and Z-f respectively. Then the lever H will be oscillating and the movement will be in the direction of arrow, and the center of said eccentric B being controlled by connectingrod I2, as described, is driven through points l, K, .Le During this time the disk R bearing the levers F2 D2 has turned to the right, carrying along therod B2 at such a rate that when the center Z f of the working eccentric has reached the point K, the end Z of the rod B2 has been carried to K and the center line Z, Z of the rod B2 and the working eccen tric will lie on the linel K K; continuing, when the center of the working eccentric shall have moved to J, the end of the rod has been carried toj; when the center has moved to i the end has moved to i. At this point the lever H has reached its lowest point, and is then beginning to be moved upward carrying along the rod l2, which in its turn causes the center of the working eccentric to be moved backward, the center moving back to h, the end of the rod has been carried to h', and so as the center moves through the points g, f, e, d, c, the end of the rod moves through the points g, f, c', d', c. When the center of the working eccentric is at c, the lever H has reached its highest point; thus c corresponds with the point c'. The lever H beginning to descend, the center is moved back to b, andy so on through a, a to l Z, as shown in Fig. 1.

While the center line of the rod B2 is moving from jj to Z i', the rod B2 through its strap B is moved outward by the eccentric B; then the levers F2, D2, and connecting link E2 take the positions shown in the dotted lines d2, e2, f2, and occupy this position during the time the center line of the rod B2 coincides with the lines h Zt', g g,f,f, e e, CZ', CZ, c', c; this time occupies one-half the revolution of the shaft N, and is known as the period of rest. From c c to Z Z, the rod B2, levers F2, D2 and link E2 are moving in from the position they occupy during the period of rest to the position From Z Z to z t" they are moving out again. The lever D2, herewith de- 1 as shown in Fig. l.

scribed, oscillates about its journal D, and rotates around shaft Nas acenter, said leverD2 1 being controlled by the eccentric B through its rod B2and yoke B', the connection being made at journal end D by B". The said end D of said lever is made to pass through the points Z, 7o', j', t', h', g', f', c', d', c', b', a to Z', which is also the diagram for the variable motion imparted to the said lever D2and its end D VThis motion is produced by oscillating the eccentric B, as heretofore described; and the end D of lever D2 in passing' through the points just described, oscillates through the arc Z d2, and produces a variable motion as shown in diagram.

the togglejoint action.

as rotating round it having it as a center, are g held stationary, and the stationary center II,

about which the lever Il oscillates, is made to rotate round shaft N in the direction of arl row 6, the co-operating parts driving and being driven by the lever I'l must necessarily;

follow it. Then the end D of lever D2, instead of describing acurve shown in the diagram, will have an oscillating movement through the arc Z,and cZ2,and back again for every complete revolution of the lever .l-l f round the shaft N as above. Changing the relative positions of the centerA2and center.k Z--f of eccentric B, will give a different out;k line to the diagram by the use of the same co operative parts, and the smooth and variable;

motion is also obtained.

The `driving and working eccentrics, with their co-operating parts, produce a vmovement that could not otherwise be obtained by cc` centrios, and for simplicity may be called a compound eccentric.

If desired, either thei lever D2 or F2 may be attached to its respect- .i

ive journal D or F, and the `motion derived by the compound eccentric taken from said j journal shaft, or any other suitable meansI adopted whereby the said motion `may be transmitted.

This movement iswell adapted to any class of machinery requiring an irreguf lar or intermittent motion, such as that used in printing presses, Shapers, harvesters, cut off valves of engines, the.

I do not limit myself to the construction and arrangement shown,as the same may be varied without departing from the spirit of my invention.

Having thus fully, described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a mechanical movement, asupport, a driving eccentric, means for driving said cccentric, a working eccentric loose on the shaft of the driving eccentric, and connections between said .eccentrics, whereby said driving 4eccentric controls through said connections the operation of the working eccentric to produce a variable motion.

2. In a mechanical movement, a support, a driving eccentric, a working eccentric having its center of rotation coincident with the cen ter line of the shaft of the driving eccentric, and connections bet-Ween the said eccentrics.

3. In a mechanical movement, arotary disk, a driving shaft, a driving eccentric operated by said shaft, a working eccentric, and a toggie-joint controlled bythe working eccentric, and a connecting-rod for controllinglthe-working eccentric, .the latter being `operated by the driving eccentric, whereby a variable motion is obtained.

4. In a mechanical movement, a rotary disk, a driving shaft, a driving eccentric operated by said shaft, a working eccentric a togglejoint consisting of two levers and a connecting-rod, said toggle-joint ibeingcontrolled by the working eccentric, and a connecting-rod operated by the `driving eccentric and controlling the working eccentric.

5. In a mechanicalmovcment, arotary disk, a driving eccentric, means for operating said eccentric, a Working eccentric, connections between said eccentrics,:and .a toggle-joint controlled by the Working eccentric,said driving eccentric controlling through said connections the operation of the working eccentric to produce a variable motion.

6. In a mechanical movement, a support, a shaft, a driving eccentric mounted thereon, a working eccentric loosely `mounted on said shaft and oscillating thereon, and connections between said eccentrics.

'7. In a mechauicalmovement, a rotarydisk, a shaft, a driving eccentricmounted thereon, a working eccentric mounted on said shaft and oscillating thereon, connections between said eccentrics, and a toggle-joint controlled by said Working eccentric.

8. In a mechanical movement, a support, a shaft, a Vworking eccentric loosely mounted on said shaft and oscillating thereon, and means for oscillating said eccentric.

9. In a mechanical movement, the combination of a driving eccentric, an oscillating eccentric having its center of oscillation coincident with thecenter lineof the shaft of the `driving eccentric, and a connecting rod `for IOO IIO

controlling the oscillating eccentric through to this specification, in the presence of two the driving eccentric. witnesses, on this 24th day of December, A. 1o

10. In a mechanical movement, the combi- D. 1892.

lnation of a, drivino1 eccentric and an oscillat- 5 ing working eccenbtric upon the same shaft, SAMUEL GLENVILLE BROSIUS' and connections whereby the driving eccen- Witnesses: `tric operates the working eccentric. E. L. HARLOW,

In testimony whereof I have signed my name HELEN DURWARD.

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