US1423973A - Mechanical movement - Google Patents

Description

J. C. STONE.

MECHANICAL MOVEMENT.

APPLICATION FILED DEC: 10, 192|.

Patented J uly 25, 1922 2 SHEETS-SHEET l.

J. C. STONE.

MECHANlCAL MOVEMENT. APPLlcAHoN FILED DEC. LQ. 192|.

1 ,423,9'73. y Patented July 25, 1922 2 SHEETS-SHEET 2.

JAY c. sToNr., or sroKANii,` WASHINGTON.

y MECHANICAL MOVEMENT.

Specification of Letters Patent.

Patented July 25, 1922.

Application led December 10,1921. Serial No. 521,345.

T 0 all whom t may concern.'

Be it known that l, JAY C. STONE, a citizen of the United States, residing at Spokane, in Spokane County and State of Washington, have invented certain new and useful Improvements in Mechanical Movements, of which the following is a specification.

My present invention relates to improvements in mechanical movements designed particular foruse in connection with mechanisms wherein it is desired to convert the reciprocating motion of a driving or lpower plant or source of power, through the interposition of intermediate oscillating mechanism and levers, into the rotary movement of a driven shaft. The primary object of the invention is the provision of means utilized in connection with the driving and driven mechanism for transferring power and converting the movement `with a maximum of efficiency and a'minim'um of friction, and in such manner as to insure a smooth, regular, and uniform action of the operating parts of the mechanism.r As an eremplification of the utility of the mechanism it may be adapted for converting the reciprocating movement of a wind mill or other motor, operated by fluid currents, into rotary movement for operating various mechanisms. The invention consists in certain novel combinations and arrangements of intermediate levers and links and connections between an oscillating` operating lever and the rotary shaft, as will be hereinafter more fully pointedout. and claimed.

In the accompanying drawings I' have illustrated one completev example ofthe physical embodiment of my invention wherein the parts are combined and arranged according` to the best mode l have thus fardevised for the practical'application 'of the principles of my invention` Figure 1 is a view in elevation showing a supporting frame for the mechanism of the mechanical movement, with said mechanism in operative position, with the crank pin moving downward, as indicated by arrows, over the right hand quarter of the circle or pathV oftravel of the crank pin.

Figure 2 is a similar view, on a reduced scale, with the connections in dierent position and the crank pin moving upwardly through the left hand quarter of the circle.

Figure 3 is a top plan. Or edge'vi'ew 0f the mechanism of Figure 2, `with parts in section for convenience of illustration.

Figure 4 is an edge view of the operating lever on'the same scale as that used in Figure 1.

In the preferred form of the invention as illustrated in the drawings, the lower end of an operating lever 1 is shown as pivot-ed at 2 to a supporting frame 3. This lever is provided with connections (not shown) at its upper end for imparting thereto an oscillatory movement on the pivot 2, and through the connections to be described the oscillatory movement of the lever is conveyed to the driven, rotary shaft 4. The shaft 4 is journaled in the frame 3 in vertical alinement withy the pivot 2 of the lever 1, and when in vertical position the lever is alined with these two centers. f

The driven shaft 4 has keyed thereto a crank disk 5 and carries a crank pin 6, upon which a fan shaped crank arm 7 is journaled `and adaptedy to swing or oscillate. At its free ,end the arm is provided with a wrist pin 8, and a spring 9, interposed between the arm and alug 1,0 on the disk tends to urge or kforce thefree end of the arm and wrist pin away from theishaft'4. The oscillating movement of the arm with respect to the disk is klimited bythe presence of a pair of arcuate slots 11, 11, in the crank arm, struck from the' center of the crank pin, and a pair of complementary guide pins 12, 12 projecting from the disk into these slots.

At the respective sidesr of the lever 1 are a pair of side bars 13, 13, `rigidly joined at the bottom,fwh ich extends beyond the slide 11'by ajoint plate or'block 14, and alsorigidly joined at the pivotal center of the lever 1 by a block 15. This block 15, as seen in Fig. 4,A is preferably integral with the pivot pin 2, and supports the pivotal connection. of the lever 1. Thus the lever frame, composed `ofthe two side bars and their rigid connections, is supported on and adapted to oscillate on the pin 2 as a center, and the slide lever 1 encased within the frame receives the oscillatingA movement to the frame, but is relatively movable longitudinally of the framei. e. in a vertical plane.

On the wrist pin 8 is journaled an antifriction roller 16, which is located in a slot 17 at the lower end of Vtheslide lever, and this slot is adapted to permit the entrance CIK of arms 18 and 19, of bell crank levers, which arms are adapted respectively to depress and lift the roller by contact therewith, and thus rotate the disk 5.

These bell crank levers are located at opposite sides of the disk and are adapted to alternately engage the anti-friction roller carried by the crank arm, passing into and out of the slot in the operating lever as the latter oscillates. rllhe bell crank levers are adapted to oscillate in a vertical plane and are supported, each, on a bushing, as 20, 2O projecting from the supporting frame 3, through which passes a pivot pin or bolt 21. A spring 22 is coiled about the pivot bolt and interposed between the bushing or frame at one end and a hub 28 at the other end, the hub being a part of the bell crank lever. These coiled springs are designed to swing the bell crank levers, and particularly their arms 18 and 19, the former upwardly, and the latter downwardly, for operative position with relation to the slotted sliding lever. Thus in Fig. 1 the arm 19 is pressed downwardly by its spring 22 and is in position to enter its free end into the slot 17 ot the lever when the latter oscillates to the left in Fig. l. n

Each bell crank lever has a collar 24 in front of the arms, as 18,19, and the lever ot which arm 18 forms a part has a plate 25 attached thereto, as by screws, of which plate the extension 26 forms the short arm of the bell crank lever. The long arm 1.8, the collar 24 and the plate 25 are rigidly secured together to form the bell crank lever and said lever is bodily oscillatable on the pivot 21. The short arm 28 oi the lever has at its end a pin 27 that coacts with the link 28, and said link is pivoted at 29 to a Iioint plate 80 rigid with and attached to the lever frame. A combined not-ch and hook 81 is fashioned in the link 28 to engage the pin 27 when the arm 18 is operatively engaged in contact with the roller 16, and it will be appa-rent that as the lever 1 oscillates away from the pin 27 the under surface of the link 28 will ride over the pin 27 to .position in F ig. 2, thus maintaining the proper relationship between the bell crank lever and the link 28.

At the opposite side of the shaft 4 a complementary connection is provided for he bell crank arm 19. A plate 32, together with the collar 24 and arm 19, are rigidly secured together to form the bell crank lever ot' which 33 is the short arm and 21ris the pivot, but with the short arm extending upwardly in reverse position to the short arm 28 of the depressing bell crank lever. The short arm 33 carries a pin 34, and the link 85, which is pivoted at 36 on a strap 37 rigid with the lever frame, has a combined hook and notch 88 for engagement with this pin. y

These links 28 and 35 are pivotally connected with the lever lrame and project in opposite directions therefrom, and they are held in operative position by the respective springs 39 and 40 carried by the frame and bearing on the links as shown.

The movement olf the oscillating lever frame is imparted to the bell crank levers, and through them to the crank arm and disk for rotating the shaft 4 by levers also carried by the frame. rlhus the draw lever 4l at the right oi the mechanism is pivoted at 42 on the lever frame and is provided with a hook 48 which engages a hook 44- on the bell crank lever 18--26- d.find it will be apparent that when the parts are in the position of Fig. 1 the oscillatory movement of the lever frame is transmitted through the draw link 41 to the bell crank lever 18-26 causinCr said lever to swing on its pivot 42l. The arm 18 is thus swung downwardly pressing the roller and crank arm downwardly in the direction of the arrow in Fig. 1 to rotate the sha-itt 4. The link 28 also assists in this movement, until the lever 1 begins to swing away from the bell crank lever 18-26. As the draw link 41 swings the hook 44 of the bell crank lever inwardly, the lower edge-of the draw link rides dovfn upon the tace of the shoulder 45 ot the bell crank lever, and said draw link is thus litted from operative engagement with the bell crank lever as the crank arm is swung under and past theshaft 4. il spring 46 attached to the lever frame bears against the draw link 41, as shown, to hold the draw .link in operative position with relation to the bellcrank lever 18-26.

A link 47, complementary to the draw link 41, is adapted to engage the notch 48 of the bell crank lever 19-83 and push the short arm of said lever, as seen in Fig. 2. This push link is pivoted at one end of a floating lever 49 that is pivoted at 50 on the frame 8, and a link 51 which is pivoted at 52 to the lever frame forms the connection with said frame. A spring 58 carried by the Heating lever bears against the push link 47 to hold the latter in operative relation to the short arm ot the bell crank lever .1Q-*83.

The operation of the parts in the transmission of power is indicated by the dotted lines and arrows, together with the full line showing in Figs. 1 and 2, wherein the disk and its driven shaft are shownas being revolved clockwise. The power from the reciprocating member oi" a driving device is applied to the lever frame, and the slotted member 1 of the operating lever is arranged to slide within the frame of the lever as the frame oscillates on its pivot 2. The sliding movement of the lever member 1 follows the rotary movement of the wrist pin 8 about the shaft 4, and the oscillating movement of the lever frame is thus transmitted by a combined oscillating and reciprocating movement of the slide member to the rotary movement of the disk and its shaft. The slide member is alternately depressed and elevated by the bell crank levers 18-26 and 19-33, and these bell crank levers are alternately actuatedon their Working strokes by the draw link 41 and the flexible connectioninvolving the push link 47. In this manner a continuous, uniform, and .regular motion is imparted to the crank disk and its shaft with comparatively slight loss by friction, and as the disk performs the function of a fly Wheel the motion is Well balanced and the operation of the parts smooth and easy.

Having thus fully described my invention, what I claim and desire to secure by Letters Patent is z- 1. The combination with a pivoted operating lever,a` rotary driven shaft and crank disk and a crank arm pivoted on said disk, of a slidable member carried by said lever and pivoted to said arm, a pair of opposed bell crank levers adapted to alternately engage said slidable member, and means actuated by said leverV for actuating said bell crank levers.

2. The combination with a pivoted operating lever and its slidable member, of a driven shaft, its disk and a relatively rotary crank arm on the disk, a Wrist pin connecting said arm and member, a pair of opposed bell crank levers adapted to alternately engage said member, a draw link pivoted to the lever and adapted to actuate one bell crank lever and a push link connected to the lever and adapted to actuate the other bellcrank lever.

3. The combination with a pivoted operat-- ing lever and its slidable member, of ya drivenV i shaft, its disk and a relatively rotary crank arm on the disk, a Wrist pin connecting saidv arm and member, a pair of opposed bell crank levers, a pair of links actuated by the lever for alternately engaging said bell crank levers toy engage the slidable member, and means carried by said operating lever for returning -said bell crank levers to' operative position after a Working stroke.

4.-. The combination With a pivoted operating lever and its slidable member, of a driven shaft, a crank disk and a relatively rotary crank larm on said disk, a Wrist pin connecting said member and arm, a pair of opposed bell crank levers adapted to engage said slidable member, a draw link and a`push link pivotally connected with said lever and adapted to alternately engage said bell crank levers, and return links pivoted on said lever adapted to co-act with the short arms of said bell crank levers. l

5. The combination With a pivoted operating lever and its slidable, slotted member, of a driven shaft, a crank disk and a relatively rotary crank arm von said disk, a Wrist pin connecting said member and arm, a pair of opposed bell crank levers having long arms adapted to alternately engage said slottedmember, va draw link and a push link pivotally connected with said lever and adapted to engage the respective bell crank levers, pins on the short arms of said bell crank levers, and notched links pivoted on the operating lever adapted to engage said pins.v

In testimony whereof I aiiix mysignature.

JAY c. STONE.

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