US1112998A

US1112998A - Stump-extractor.

Info

Publication number: US1112998A
Application number: US83599314A
Authority: US
Inventors: Adolf Granlund
Original assignee: Individual
Current assignee: Individual
Priority date: 1914-05-02
Filing date: 1914-05-02
Publication date: 1914-10-06
Anticipated expiration: 1931-10-06

Description

A. GRANLUND. l STUMP EXTRAGTOR. APPLICATION FILED MAY 2, 1914.

Patented Oct. 6, 1914.

2 SHEETS-SHEET 1.

A. GRANLUND. STUMP BXTRACTOR. APPLICATION FILED MAY 2, 1914.

1,112,998.- Patena oet. 6, 1914.

2 SHBETS*SHEBT 2.

gnou/woz jdd/f 62am Wil/weones u A) fe S A I W ADOLF GRAN LUN D, OF ESCANAIBA,y MICHIGAN.

sTUMP-EXTRAoToR.

Specication of Letters Patent.

Patented Oct. 6,1914.

Application tiled May 2, 1914'. Serial No. 835,993.

To all whom 'it may concern Be it known that l, ADoLF GRANLUND, a citizen of the Kingdom of Sweden, residing at Escanaba, in the county of Delta and State of Michigan, have invented certain new and useful Improvements in Stump- Extractors, of which the following is a specification.

The present invention relates to improvements in stump extractors, the object in view being to provide a simple and compact structure of this character designed to facilitate manipulation of the same and so arranged as to afford a maximum amount of power for extracting purposes.

.ln carrying out the invention i provide in combination with a cable or similar flexible member, one end ot' which is adapted to be connected or anchored to stationary object, a movable member in' the form of a running pulley operably connected to the stump to be extracted and around which the cable passes, the other end of said cable being secured to tension means also coperating with the cable intermediate the pulley aforesaid and the stationary member and embodying actuating means therefor to cause movement of said tension means toward the stationary object and thereby exerting tension through the running pulley on the stump to be extracted.

A still further object in mind is the provision of tension means as hereinbefore mentioned of a special character embodying a toothed drum about which the cable is 4wound and which is mounted in a frame through which said cable passes, together with actuating means for the drum for imparting rotation to the same to cause the tension means to move on the cable, when said cable is wound around the drum in either direction. y

These and such other objects as may hereinafter appear are attained by the novel. construction, combination,` and arrangement of parts to be hereinafter specifically described and claimed.

Reference will now be had to the accompanying drawings forming a part of this specification` wherein:

Figure 1 is a perspective view of an apparatus embodying my invention in position for performing its extracting function. Fig. 2 is a side eleva-tion of the device. Fig. 3 is a top plan view. Fig. 4 is a longitudinal sectional view through the tension means on .paratus and referring to the the line 4-41 of Fig. 3. Fig. 5 is a transverse sectional view on the line 5-5 of Fig. 3, showing the cable partly broken away; and Fig. 6 is a perspective view showing details of the actuating means' for the toothed drum of the tension means of this device.

Throughout the following detail description, and on the several figures o1 the drawings, similar parts are referred to by like reference characters. y

Specifically describing my extracting apdrawings, the numeral l designates a cable or similar flexible member, one end of which is connected to a stationary object 2 located 4near the stump 3 which is to be extracted. The cable l passes about a movable member in the form of a running pulley et which is operably connected to the stump and said cable at its other end is positively secured to the frame 5 of the tension means or mechanism of this device now to e more particularly described.

As most clearly shown in Figs. l and 5 of the drawings, the .tension means just mentioned is interposed between the pulley 4 and the stationary object 2, the cable 1 passing about a toothed drum 6 mounted upon the vertical axis 7 between laterally projecting spaced arms 8 of the frame 5.

Referring particularly to Fig. 5 theframe 5 consists of opposite U-shaped arms orv members 5 and 5" each of which has an opening therethrough as indicated at 9 and 9 and when the cable is in operable position, starting from the end secured to the stationary object 2, it passes through the opening 9 around the toothed drum 6 several times and from thence through the opening 9 about the pulley 4 and back again to the U-shaped arm 5 of the frame to which it is positively secured forming a stress exerting loop at this end. Between spaced arms 10 extending from the frame at the side opposite to the arms 8 between which the drum 6 is mounted, is pivoted an operating lever 1l, the pivot 12 passing through the bifurcated terminal of said lever as shown most clearly in Figs. l and 4.

Between the bifurcate ends of the lever 11 is mounted at one side a hooked paw] 18, the hooked terminal of which is adapted to engage with the teeth 14 formed on the pe- 110 ripheral edge of said drum while at the opposite side`is similarly mounted a stop pawl the` out.

The pulley 4 having been operably con- V nected to the stump 3 in any desired manner the lever 11 is oscillated to and fro so as to cause the hooked pawl 13 to rotate the drum 6 in the direction indicated by the arrow in Fig. 3. The stop pawl 15, when the lever is moved ina direction drawing the pawl 13 toward the pivot of said lever, rides on the teeth 14 on the drum until the limit of movement of said lever is reached when it interlocks with the drum and enables the pawl 13 to further actuate said drum upon imparting to said lever a similar movement after having rengaged the pawl 13 with teeth far` ther around on the'` eriphery of said drum. Movement of the rum as just described causes the cable 1 to bewound thereupon in one direction and to be unwound there-v from an equal extent in the other direction, which action imparts movement to the tension means man obvious manner, and by reason of the fact that one extremity of said until the cable is secured to the frame of the tension means, tension is imparted to the pulley 4, tending to cause said pulley to move in a similar vdirection toward the stationary object 2. By reason of the winding of the cable about the drum 6 and the leverage afforded by the lever 11 a considerable power is afforded vthe device enabling the stum to be extracted and it will be obvious to t ose skilled in this art that the travelof the tension means along the cable will be twice as fast or as great as the corresponding movement of the pulley 4 in the same direction. As long as the lever is oscillated the movement of the tension device will take place stump has been extracted and when it is a ain desired to set the apparatus in positionv or a subsequent extracting operation the pawls'l and 15 areadapted to be held out of engagement with the teeth of the drum 6 by means ofhooks 17?- and 18 secured at opposite sides of the lever 11 at 17 and 18 respectively. Each pawl for this purpose is provided with an

eye

19, 19 in which the respective hooks are engaged as shown most clearly in dotted lines in Fig.

3 of the drawings. When the pawls are thus disengaged from the drum 61 the lever 11 is moved into a position in alinement with the i 'arms 8 of the frame 5 anda set screw or similar lockingmember 20 is screwed into engagement ,with a recess 21 in a bifurcate terminal of said lever rwhich recess is shown in Figs. 4 and .6 respectively. By exerting a pull upon the pulley 4'the tension means or mechanism will be moved by unwinding of the cable in the direction in which the pull on the pulley is exerted. The pawls are then allowed to engage with thedrum again and the lever 11 unlocked so that the actuation of the devicevmay be accomplished in a manner described hereinbefore. The lever 11 preferably consists of the socket 11 and the removable handlell which latter may be of any suitable length depending upon the amount of leverage which is required for operation of the device.

As a matter of convenience, I preferably provide

eyes

22 and 23 at opposite sides of the lever 11 in which the

hooks

17 and 18, may be disposed when in inoperative position and during the use of the ratchet mechanism. l also specially form the spring 16 with bent terminals and these terminals are adapted to coperate with the

eyes

19, 19 of the

pawls

13 and 15 respectively so as to limit movement of the lever in opposite di'- rections, said spring and eyes mentioned thus performing a dual function.

It will be apparent to those skilled in lthis art that the invention hereinbefore described may readily be used for various other purposes than that incidental to the extracting of' stumps and in fact wherever it is desired to employ power mechanism for imparting tension to objects as when lifting, drawing and yin similar operations. In addition to this fact it will be understood that changes may readily be made in the details of construction of this device and particularl of the tension-means comprehended by the oregoing description without departing` from the spirit ofthe invention and within the scope of the claims hereto appended.

Having thus described my invention, what I claim as new'is:

1. -In an extracting device of the class described, thel combination of a cable adapted to be fixed at one end portion toy a stationary object, tensioning means engaging an intermediate portion of the cable, the other end portionofthe cable being fixed to the tensioning means to form a stress exerting loop beyond the tensioning means, and means for actuating the tensioning means for causing the same to travel toward the` stationary object.

2. In an extracting device of the class described, the combination of a cable adapted to be fixed at one end portion to a stationary object, tensioning means engaging an intermediate portion of the cable, the other end portion of the cable being `fixed to the tenl being xed to sioning means to form a stress exerting loop beyond the tensioning means, a pulley about Which said loop extends, means of connection for the pulley with the object to be eX- tracted, and means for actuating the tensioning means for causing the same to travel along the cable toward the stationary object.

3. In an extracting device of the class described, the combination of a cable adapted to be connected at one end to a stationary object, a movable member operatively connected to the object to be extracted and around which the cable passes adjacent its other' end, tensioning means to which the last mentioned end of the cable is connected whereby to form a stress exerting loop, said tensioning means embodying a frame through which the cable passesintermediate the movable member and the stationary object, and means for actuating said tensioning means to cause the same to move on the cable toward a stationary object and thereby exert tension upon the movable member aforesaid.

4. ln an extracting device of the class described., the combination of a cable adapted to be fixed at one end portion to a stationary object. tensioning means comprising a capstan engaging an intermediate portion of the cable, the other end portion of the cable the tensioning means to form a stress exerting loop beyond the tensioning means, and means for actuating the tension means for causing the same to travel toward the stationary object.

5. In an extracting device of the class described, the combination of a cable adapted to be connected to a stationary object at one end, said cable being connected with an object to be extracted, a drum engaging an intermediate portion of the cable, a frame in which the drum is mounted and to which the second `end of the cable is connected, means for actuating the drum to cause the frame and drum to move along the cable toward a stationary object, and means coact- 11 g with the last mentioned means and locking the frame drum against movement toward the object to be extracted when the drum is actuated by the actuating means aforesaid, said locking means being releasable to permit free movement of the frame and drum on the cable away from the stationary object.

6. ln an extracting device of the class described the combination of a cable adapted to be connected to a stationary object, means connecting the cable to an ,object to be extracted, and tension means engaging an intermediate portion of the cable and comprising a frame having apertures therethrough through which the cable passes, a drum mounted on said frame intermediate the apertures for said cable around which the cable is Wound, means for actuating said drum, comprising a lever pivoted to the frame, an actuating paWl carried by the lever for rotating the drum, and a locking member on said lever cooperating With said drum for locking the same against movement in one direction.

7. In an extracting device of the class described, the combination With a cable adapted to be connected to a stationary object at one end, tension means cooperating with said cable intermediate its length and operatively connected to an object to be extracted, said tension means comprising a frame through which the cable passes, a pulley disposed intermediate the object to be extracted and the tension means and around which the cable passes in the form of a loop, the loop end portion of said cable being connected to the frame aforesaid, a

toothed drum mounted in said frame abolitwhich the cable is wound, a lever pivotally secured to said frame, an actuating paivl pivotally mounted on said lever and adapted to engage the toothed drum to impart rotation thereto upon oscillation of said lever, a locking pawl cooperating with the drum to hold the same at adjusted positions, and means for holding the paWls disengaged from the drum to permit free rotation of the same.

8. ln an extracting device of the class described, the combination with a cable adapted to be connected to a stationary object at one end, tension means cooperating with said cable at an intermediate point and operatively connected to an object to be extracted, said tension means comprising a frame through which the cable passes, a pulley disposed intermediate the object to be extracted and the tension mears and around which the cable passes in the form of a loop adjacent its other end, the loo end of said cable being connected to the frame aforesaid, a toothed drum mounted in said frame about which the cable is wound, a lever pivotally secured to said frame, an actuating paWl pivotally mounted on said lever and adapted to engage the toothed drum to impart rotation thereto upon oscillation or' said lever, a locking paWl cooperating with the drum to hold the same at adjusted positions, means for holding the pawls disengaged from the drum to permit free rotation of the same, and independent means for locking the lever against movement when the pawls are disengaged from the drum. i

9. In an extracting device of the class described, the combination with a cable adapted to be-connected to a stationary object at one end, tension means coperating with said cable and operatively connected to an object to be extracted, said tension gage the toothed which the cable passes,

gaged from bers on the actuating paWl-and the locking VJ passes, one end of said cable being connected to the frame aforesaid, -a toothed drum mounted in said frame about which the cable is Wound, a lever pivotally secured to said frame, an actuating pawl lpivotally mounted on said lever and adapted to enthereto upon oscillation of said lever, a locking pawl cooperating With the drum to hold the same at adjusted positions, and spring tension means common to the actuating pawWl and `the locking paWl normally maintaining said paWls in engagement with the drum.

10. In an extracting device of the class described, the combination With a cable adapted to be ccnnectedto a stationary obl ject at one end, tension means cooperating with said cable and operatively connected to an object to be extracted, said tension means comprising an apertured frame through a toothed drum mounted in said frame and around which the cable is Wound, a lever for actuating the drum to cause movement of the tension means along the cable, an actuating pawl connected to the lever and coperating'with the drum to rotate the same upon oscillation of said lever, a locking member carried by said lever and cooperating with the drum to hold the same at adjusted positions, a spring mounted in said lever and having its terminals bearing against the actuating pawl and the locking member aforesaid to normally hold the same in engagement with the drum,a hook member carried by the lever at each side of the same and adapted to be engaged With the actuating paWl and the locking member respectively to hold the same out of and to thereby permit free rotation of said drum, a locking member mounted in the frame and adapted to engage with the lever to lock said lever against movement relative to the frame when the paWls are disen- Ithe drum, and abutment memwith said drum to impart rotation engagement With the drum member aforesaid adapted 'i to limit 'the' movement of the lever in leither direction. i

11. In an extracting device of the class' described, the combination with a cable adapted to be connected to a stationary object at one end, tension means cooperating cable andl operatively connected to an object to be extracted, said tension means comprising an apertured frame through which the cable passes, a toothed drum mounted in said frame and around vwhich the cable is wound,'a'lever for actuating the drum to cause movement of the tension means along the' cable, an lactuating pawl connected to the lever and coperating with the'drum` to rotate the same uponv oscillation of saidvlever, a locking member carried by said'lever and cooperating with the drumv to hold the `same at adjusted positions, a spring mounted in said lever and having it's terminals bearing against the ac- `tuating pawl and the locking member. aforethe same in "engagesaid to normally hold a hook member ca rment with the drum,

ried by the lever at each side of the same j to be engaged with the actuatand adapted ing paWl and the locking member respectively to hold the same out of engagement v vith the drum to thereby permit free rotation of said drum, a locking member mounted in the frame and adapted to engage with the lever to lock said Vlever against movement relative to the frame when the pa-Wls are disengaged from the drum, and' abutment members on the actuating pawl and the locking member aforesaid adapted to limit the movement direction, said abutment members consisting of eyes disposed to contact with the spring aforesaid upon movement of the lever fin either,direction, said hook members carried by the lever being adapted to be engaged in the eyes aforesaid for holding v the actuating paWl and locking member out of engagement with the drum.

In testimony vvhereot1 I affix my signature in presence of two Witnesses. Y ADOLF GRANLUND.

Witnesses:

PETER N. PETERSON, KARL HOGBERG.

of the lever in either