US1318789A - Op otttjmwa - Google Patents

Description

H. MOSCHEL.-

HAY STACKER, APPLI CATION F| LED AUG- 19. 1918.

1,318,789. Patented Oct. 14,1919.

3 SHEETSSHEET I.

mam W mfnzqa- H; MOSCHEL.

HAY STACKER.

APPLICATION HLED AUG-WI I9IB- Patented 001314;,1919.

' 3 SHEETS-SHEET s.

7 I 40 :zr';

'upon the stack.

UNITED STATES PATENT OFFICE.

I HERMAN MOSGHEL, OF OTTUMWA, IOWA, ASSIGNOR- '10 DAIN MANUFACTURING COMPANY OF IOWA, 0F OTTUMWA, IOWA, A- CORPQRA'I-ION OF IOWA.

HAY-STACKER.

Specification of Letters ?aten-t. Patented 31 14, 1919 Application filed August 19, 1918. Serial 1102 250,514.

To all whom it may concern I Be it known that I, HERMAN Mosorrnn, a citi-Zen of the United States, and a resident of Ottumwa, in the county of WVapello and State of Iowa, have invented certain new and useful Improvements in Hay-Stackers', of which the following is a specification, reference being had to the accompanying drawings. 7

My invention relates to hay stackers of the overshot type, in which the hay deposited upon a head carried by a swinginglift ing frame pivotally supported at its lower end, is carried up over the stacker by the swinging of the lifting frame and deposited When the stacker is in loadin position the lifting frame is substanti-a ly parallel with the ground with the head resting on the ground so that it is in position to have the hay deposited upon it bya sweep rake or other suitable implement. The hoisting of the lifting frame is usually accomplished by means of a system of lev'ers and rope and pulley mechanism, the power being furnished by a team which hauls upon the hoisting rope and thereby swings the liftingframe upward to a point beyond its perpendicular position so that the hay is thrown clear of the stacker. In staokers of this description it is desirable that the head and the supporting devices therefor be so constructed and arranged th'atthe radius of the are through which the head is moved may be varied in length so that when the stack is small the hay will not be lifted as high as whenthe stack has been built up to a considerable height. Obviously, as the point at which power is applied to the lifting frame is constant, greater power is required to raise the head from the ground and through the initial stages of the lifting operatlon when the head is extended than when it is in its retracted position, and furthermore, the power required to lift the head during the early stages of the lifting operai tion is much greater in proportion than that required to carry on the lifting operation after the lifting mechanism assumes a more favorable position. In view of these considerations," it is desirable that an extensiblestacker of the type described be so constructed and arranged that the stacker head will always be retracted when in position to be loaded, and will be extended principally after the load has been partly raised and the lifting mechanism is acting undermorefavorable conditions, as in that way the power required during the entlre lifting operatlon is more" nearly equalized and the initial ex penditure of power required is less, and to pr'ovlde a stacker which will operate in this way is the principal object of my inveng tion. A further object is to provide a construct on by which the height to which the head 13 extended maybe adjusted so that as the stack is built up, the head will be raised accordingly.-

In the accompanying drawings Figure I is a side elevation showing the parts of the stacker in their loading position;

Fig. 2' is a plan view thereof; and

Fig; 3 isa side elevation showing the parts in the position'which they occupy when the load hasbeen'par'tly raised and the" stacker head extended about half way.-

Referring to the drawings: 5 6 indicate parallel side sills, and, 7 8 front and rear cross bars which connect the end portions of said side sills and form with them a rectangular frame or base upon which the operating parts of the stackers are mounted. 9 indicates an intermediate cross bar used to strengthen the base; For this purpose I also provide divergent braces 1011, which eXtend from the center of the rear cross bar to the sills 5-6. respectively. 12-13 indicate brackets which are mounted upon the outer ends of the braces 10-1l, as shown in Fig. 2', and are provided with outwardly extending pins ll'.l5 upon which are pivoted the side members 16 of the lifting frame. One of these members is shown in Figs. 1 anfdB, and it will be understood that asimilar member is provided at the opposite side of the machine: The forward ends of said members 16 are connected by transverse bars 17, shown in Fig. 2, and are braced thereto by, corner brackets or braces 18, as shownin saidfigure. this construction the lifting frame composed of the two side members 16 and the Crossbars 17 isadapted to swing; in a vertical plane about the pivot pins 1415.

19-20 indicate the side members of an extensible frame which overlie the side members 16' of the lifting frame and are held in. operative position by clips 2122, as shown in Figs. 1 and 2. WVhile these clips hold the extensible frame upon the lifting frame, they permit the extensible frame to slide endwise upon the lifting frame for the purpose of increasing or diminishing the radius of the are through which the stacker head swings, as will be hereinafter more fully explained. 23. indicates the stacker head which may be of any suitable construction and therefore need not be particularly described. 24: indicates the teeth of the stacker head, upon which the hay is deposited, and 25 indicates upstanding pitcher teeth upon which the hay rests after the stacker head has been raised to a certain extent. 2627 indicate links which extend rearwardly from the side members 192O of the extensible frame, and are pivotally connected therewith by pivots 28-29 mounted in pairs of straps 30-31 secured to the side members 1920, respectively, as shown in Figs. 12. The links 2627 overlie the rear portions of the side members 16 of the lifting frame, and preferably extend some little distance beyond them, as shown in Fig. 1. At or near their rear ends the links 26 27 are provided with brackets 3233 having laterally-projecting pins 34s35 upon which are pivotally mounted the rear end portions of levers 3637. g The forward end portions of said levers are mounted respectively on pivots 3839 carried by brackets 40t1 secured to the side sills 56 of the base at a point forward of the pivots 0f the lifting frame and preferably approximately mid way of the length of the side sills of the base, as shown in Figs. 1-2. The levers 36-37 are provided with longitudinal slots 12, as shown in Fig. 1, and the side members 16 are provided with laterally-projecting pins or fulcra 4:34a which extend through said slots 42, as shown in said figure and in Fig. 3, so that said levers are fulcrumed intermediately of their length on the side members 16.

From the foregoing description it will be apparent that when the li ting frame is swung upward about its pivots 1415 carrying with it the extensible frame, the pins 43% will act intermediately upon this levers36-37 to swing them upwardly about their pivots 3839, thereby swinging the rear ends of the links 2627 upward, said links turning about their pivots 2829. As will be evident from an inspection of Fig. 8, as the upward movement of the lifting frame continues, the links 26-23 will not only assume a pronounced angular position with reference to the lifting frame, but will also move endwise toward the forward or upper end of the said lifting frame, thereby extending the extensible frame and the head carried by it. Further movement in the same direction of the lifting frame will again swing the links 2627 approximately into parallellism with the lifting frame, and, as the" pins 43 approach the outer ends of the slots 42, will move said links endwise until the brackets 32-33 are approximately in line with the pins 43, when the head will be completely extended. It will be noted that at the beginning of the hoisting movement the head will be extended comparatively slowly owing to the swinging movement of the links 2627, but after the lifting frame has been raised until it assumes an angular position of about thirty degrees, the head will be extended much more rapidly. This is desirable because after the lifting frame has been partially hoisted, the lever mechanism hereinafter described through which the lifting is accomplished assumes a more favorable angle, and consequently the expenditure of power necessary to continue the hoisting operation is proportionately less so that the more rapid extension of the head at that time merely equalizes the expenditure of power necessary to continue the lifting operation. vVhen the load has been dis charged and the lifting frame is lowered the head is retracted automatically by a reversal of the operation of the parts above described so that when the lifting frame is again in loading position the head is again com pletely retracted.

The mechanism by which the lifting frame together with the extensible frame and head are raised may be of any suitable description, but is preferably of the wellknown type which comprises an A-shaped, or inverted V-shaped, frame 45 which is pivoted to the side sills 56 of the base substantially in line with the pivots 3839, as shown in Fig. 3. 16 indicates a rocking lever or walking beam which is pivoted at 17 upon the upper end portion of the frame 45 and at its forward end is connected by diverging links 48%.) with the forward end portions of the lifting frame members 16, as shown in Figs. 2*3. The rear end portion of said lever i6 carries a sheave 50 around which operates a hoisting rope 51 running around sheaves secured to the rear cross bar 8, as shown in said figures. Thus, by means of the hoisting rope the A- frame 45 may be swung backward and the rear end of the lever 46 pulled downward to hoist the stacker head and operate the mech anism for extending it. The lifting frame is held in proper position when the stacker head is lowered by a chain 5 1 which is connected with the forward end of the lever 46 and to the divergent braces 1011, as shown in Figs. 12. When the stacker head is elevated it is prevented from passing too far beyond the perpendicular by the usual stop ropes 5556 which, at one end are connected with the forward end portions of the lifting frame members 16, and after passing around sheaves 5758 connected with the forward end portions of the side sills 56, are connected respectively to chains 5960, which are attached to blocks 61-62 arranged to slide on rods 636et which I carry springs 65-66, as shown in Fig. 2.

These rods are secured to the base, and the arrangement of the parts is such that when the lifting frame passesbeyond its perpendicular position the blocks 61-'62 compress the springs 65-66, thereby, not only cushioning. the lifting frame, but also, because of the quick rebound. thereof, aiding in pitching the hay from the stacker head. By adjusting the stop ropes in any suitable way, the point at which the springs 65-66 act to resist further movement of the lifting frame may be. varied. This may be done by lengthening or shortening the ropes 55-56.

In order that the extent to which the stacker head is extended may be varied, the members 16 of the lifting-frame are provided with a series of holes 67, best shown i i-Fig. 3, so that the pins iii-AA maybe placed at different distances from the pivots 14: 15. The farther the pins 43- -(ll are from the pivots 14 -15, the greater will be the extension of the stacker head.

The salient feature of my invention is the mechanism by whlch the stacker head is ex-f tended and retracted, and I wish it to be understood that the embodiment? thereof illustrated in the drawings is only one of a number of ways in which the mechanical principles involved may be applied, My invention, therefore, isnot limited to the specific construction shown and described, but includes such variations thereof aswould occur to those skilled in the art, and the claimshereinafter. made are tobe construed accordingly. V v

.What I claim as invention and desire to secure by Letters Patent, is V 1. A stacker comprising a. base, a swinging lifting frame connectedtherewith, an extensible frame carried by said lifting.

frame and movable longitudinally thereof,

a head carried by said extensible frame, and means fulcrumed upon the lifting frame and connected with the base and with. the stacker head for advancing and retracting said head. c a I '2. A stacker comprising a base, a swinging lifting frame connected therewith, an extensible frame carried by said lifting frame and movable longitudinally thereof, a head carried by said extensible frame, and means pivotally mounted on said lifting frame and connected with .thelxextensible frame and with'the base for moving saidextensible frame longitudinally by the swinging of said lifting frame. j

8. A stacker comprising a base, a swinging lifting frame connected therewith, an extensible frame carried by said lifting frame and movable longitudinally thereof, a head carried by saidextensible "frame, and means pivotally mounted von said lifting frame and connected with the base in advance of the pivot ofthe lifting frame and with the extensible frame for moving said extensible frame longitudinally by, the swinging of said lifting frame. V

4. A stacker comprising a base, a'swinging lifting frame connected therewith, an extensible frame carried by said lifting frame and movable longitudinally thereof, ahead carried by said extensible frame, and

ing lifting frame connected therewith, an

extensible frame carried by said lifting frame, and movable longitudinally thereof, a head carried by said extensible frame, and a lever movably connected intermediately with the lifting frame and connected with the extensible frame and with the base for moving said extensible frame longitudinally bythe swinging of said lifting frame.

7. A stacker comprising a base, a swinging lifting frame connected therewith,,an extensible frame carried by said lifting frame and movable longitudinally thereof, a head carried by said extensible fra1ne,'and a lever mounted intermediately on the lifting frame and connected with the extensible frame and with the base in advance of the: pivot I of the lifting frame for moving said extensible frame longitudinally by the swinging of said lifting frame.

8 A stacker comprising abase, a swinging lifting frame connected therewith, an

extensible frame carried by said lifting frame and movable longitudinally thereof, a head carried by said extensible frame, and a lever movably connected intermediately with the lifting frame and comiected with the extensible frame and with the base in advance of the'pivot of the lifting frame for moving said extensible frame longitudi-' nallyby the swinging of said lifting frame.

9 A stacker comprising a base, a swinging lifting frame connected therewith, an extensible frame carried by said lifting frame and movable longitudinally thereof, a head carried by said extensible frame, a lever movably connected intermediately with the lifting frame and connected with the extensible frame and the base, anda link connecting said lever with thegextensible frame whereby saidextensible frame willibe 'means having a shifta'ble bearing on said moved longitudinally by the swinging of said lifting frame.

10. A stacker comprising a base, a swinging lifting frame connected therewith, an extensible frame carried by said lifting frame and movable longitudinally thereof, a head carried by said extensible frame, a link pivotally connected with said extensible frame, a movable member coacting with said link, and means whereby the swinging of said lifting frame actuates said movable member to move said extensible frame longitudinally.

11. A stacker comprising a base, a swinging lifting frame connected therewith, an extensible frame carried by said lifting frame and movable longitudinally thereof, a head carried by said extensible frame, a link pivotally connected with said extensible frame, swinging means connected with said link and with the base, and means whereby the swinging of said lifting frame actuates said swinging means to move said extensible frame longitudinally.

12. A stacker comprising a base, a swinging lifting frame connected therewith, an extensible frame carried by said lifting frame and movable longitudinally thereof, a head carried by said extensible frame, a link pivotally connected with said extensible frame, a lever connected with said link and with the base, and means whereby the swinging of said lifting frame actuates said lever to move said extensible frame longitudinally.

13. A stacker comprising a base, a swinging lifting frame connected therewith, an extensible frame carried by said lifting frame and movable longitudinally thereof, a head carried by said extensible frame, a link pivotally connected with said extensible frame, and a lever mounted intermediately on the lifting frame and connected with said link and with the base for moving said extensible frame longitudinally by the swinging of said lifting frame.

14. A stacker comprising a base, a swinging lifting frame connected therewith, an extensible frame carried by said lifting frame and movable longitudinally thereof, a head carried by said extensible frame, a link pivotally connected with said extensible frame, and a lever movably connected intermediately with said lifting frame and hav-. ing its end portions connected with said link and with the base for movin said extensible frame longitudinally by the swinging of said lifting frame.

15. A stacker comprising a base, a swinging lifting frame connected therewith, an extensible frame carried by said lifting frame and movable longitudinally thereof, a head carried by said extensible frame, and

mechanism for advancing and retract-ing the stacker head consisting of means pivotally supported by the base and fulcrumed upon the lifting frame, and a rising and fallin link pivotally associated with the stacker head and with said means.

16. A stacker comprising a base, a swinging lifting frame connected therewith, an extensible frame carried by said lifting frame and movable longitudinally thereof, a head carried by said extensible frame, and a member pivotally connected with the base and with said extensible frame, said member being operatively engaged intermediately by the lifting frame to move said extensible frame endwise by the swinging of said lifting frame.

17. A stacker comprising a base, a swinging lifting frame connected therewith, an extensible frame carried by said lifting frame and movable longitudinally thereof, a head carried by said extensible frame, and a member pivotally connected with the base at a point forward of the pivot of said lifting frame and connected with said exten sible frame, said member being operatively engaged intermediately by the lifting frame to move said extensible frame endwise by the swinging of said lifting frame.

18. A stacker comprising a base, a swinging lifting frame connected therewith, an extensible frame carried by said lifting frame and movable longitudinally thereof, a head carried by said extensible frame, a member pivotally connected with the base, and a swinging link connecting said member with the extensible frame, said member being operatively engaged intermediately by said lifting frame, whereby said extensible frame will be moved longitudinally by the swinging of said lifting frame. 19. A stacker comprising a base, a swinging lifting frame connected therewith, an extensible frame carried by said lifting frame and movable longitudinally thereof, a head carried by said extensible frame, a member pivotally connected with the base in advance of the pivot of said lifting frame, and a swinging link connecting said mem ber with the extensible frame, said member being operatively engaged intermediately by said lifting frame, whereby said extensible frame will be moved longitudinally by the swinging of said lifting frame.

20. A hay stacker comprising a base, a swinging lifting frame, an extensible frame carried by said-lifting frame, a lever connected with the extensible frame and the base, and means operated by the swinging of said lifting frame for actuating said lever to move said extensible frame relatively to said lifting frame.

HERMAN MOSCHEL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C.

Images