US498655A - Jqffjq- x - Google Patents

Description

(No Mbdel.) 4 Sheets-Sheet 1. v

E. IVENS. LOG PULLING APPARATUS.

Patented May 30, 1893.

WITNESSES A TTORNEYS (No Model.) 4 Sheets-Sheet 2.

E. M. IVENS. LOG PULLING APPARATUS.

No. 498,655. Patented May 30, 1893.

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WITNESSES .222) eon/d J1. Zam;

(No Model.) 4 Sheets-Sheet 4. E. M IVENS. LOG PULLING APPARATUS. No. 498,655. Patented May 30, 1893.

IIIGIIIZI A TTOHNEYS m: oam: PETERS 00.. Pncyqumo" wysqma'rqu. n. c.

UNITED STATES PATENT 7 OFFICE.

EDMUND M. IVENS, OF NEWV ORLEANS, LOUISIANA, ASSIGNOR TO EMILY L.

IVENS, OF SAME PLACE.

LOG-PULLING'A'PPARATUS.

SPECIFICATION forming part of Letters Patent No. 498,655, dated May 30, 1893.

Application filed June 16,1892 Serial No. 437,006. on) model.)

To all whom it may concern.-

Be it known that I, EDMUND M. IVENS, residing at New Orleans, in Orleans parish and State of Louisiana, have invented a certain new and useful Log-Pulling Apparatus, of which the following is a specification.

My invention relates to an apparatus especially adapted for pulling heavy logs out of swamp lands into lagoons or bayous.

In collecting heavy logs from swamplands, particularly so in the Louisiana swamps, great difficulty is experienced in handling heavy cypress logs, and pulling them through the swamp and brush to a collecting lagoon or bayou; so much so, that much of the timber is allowed to remain, as its removal by the ordinary means is unprofitable.

My invention has for its object to provide an apparatus which will effectively serve to' collect such logs, at'a profit, which can be constructed at a moderate cost and is easily operated.

To these ends my invention consists in the peculiar and novel arrangement and combination of parts all of which will hereinafter be fully described in the specification and particularly pointed out in the claims, reference being had to the accompanying drawings in which- Figure 1 is a top plan view of my improved log pulling apparatus. Fig. l is a diagrammatic plan view of my improved apparatus as arranged for use. Fig. 2 is a longitudinal section on an enlarged scale of one of the drums and the clutch devices. Fig. 3 is a detail transverse section taken on the line 33, Fig. 2. Fig. 4 is a front view, Fig. 5 a top view and Fig. 6 a side view of the rope laying devices. Fig. 7 is a detail view of one of the feed screws hereinafter specifically referred to, and Fig. 8 is a sectional elevation of the steam cylinder and clutch lever operating pistons hereinafter referred to. Fig. 8 is a top, and Fig. 8 a sectional view of the swamp sheave hereinafter referred to. Fig. 9 isa detail view of the main drive pinion, and Fig. 10 is a detail view of a modification hereinafter referred to. Fig. 11 is a view of a modification.

In the practical construction of my improved apparatus, the general arrangement of parts is as follows: Upon a suitable platform, are mounted the main drive shaft and drive mechanism. Upon such shaft, is loosely journaled a pair of independently operated winding drums, provided with independently operated clutch devices, whereby such drums can be held for rotation at varied speeds by the uniform revolution of the drive shaft, and to such drums are connected the ends of a pull rope, the loop portion of which is carried into the swamp to the desired point, where it passes over a swamp sheave fixedly held, at the point from which it is desired to pull the logs; usually by connecting it to a large tree or stump. Rope laying devices are also mounted upon the platform, one for each drum, which are independently operated by the drums at varied speeds, so as to move the opposite ends of the rope laterally at a speed proportionate to the varying diameters of the drum and rope coil, and the varied revolution of such drum.

In the use of the apparatus the rope is operated to pull reversely, 2'. 6., after a log or logs have been attached to the rope (in any ordinary manner) at one side, the drum on the respective side winds up, to pull the log toward it, while the opposite drum unwinds, until such log reaches the collecting lagoon, when it is detached from the rope. At this time another log is attached to the opposite rope section at a point near the swamp sheave andthe revolutions of the drums reversed, until such logis carried inward to the lagoon.

Referring to the accompanying drawings A indicates a suitably arranged, platform or frame work usually termed in this art the floating boat upon which is journaled transo versely in the bearings b b, a shaft B, which extends entirely across such frame. Upon this shaft are loosely mounted two drums O, the construction of each of which is alike, one being shown in detail in Fig. 2 of the drawings, by reference to which it will be noticed that each drum is formed of two parts 0 c bolted together. The outer ends of each section 0 is turned out and is held to fit against an annular rim or plate L, which strengthens rco hubs carrying clutch levers G.

By referring more particularly to Figs. 2 and 3 it will be noticed that these clutch levers are pivoted at their inner ends g to the hub F, and have play in radial sockets f formed in such hub plates and in practice six of such levers are preferably used. The outer ends of the levers G are pivotally connected by the transverse pins H, to apertured lugs formed integral with the segmental brake shoesJ fitting within the annular rims G of the drums. In the peripheral faces of the brake rims J is formed a series of dovetail ways j in which are driven andfitted the gumwood friction blocks K K (see Fig. 3). A pair of main operating levers M is employed for each drum, the outer ends of which are piv otally connected to brackets N on the frame timbers N; and near such ends such levers are also pivotally connected with the sliding collars E theirinner ends being extended and connected with adjusting mechanisms pres ently referred to.

I P indicates the drive gear fixedly secured to the shaft 13 centrally thereof, which meshes with a main drive pinion R mounted on the crankshaft Q driven by the horizontal engines 'S S.

In practice the cranks or crank disks have to be shrunk on the engine shaft and also keyed thereto on account of the rough use they have to endure. Hence it is a difficult and expensive matter to remove the engine shaft and frequently break a crank in forcing it off, when it is desired to. secure the pinion R' in place. To overcome this difliculty I make the pinion R out of two parts as shown most clearly in Fig. 9+by reference to which it will be seen that the main or body portion of the pinion has a radially extending cutout portion R, whereby it can be slipped onto the shaft sidewise thereof and fixedly held thereon to turn therewith by the ordinary wedge keys 0 r. Near its outer cut edge the body portion has laterally extending apertured lugs r r with which register apertured lugs r W, on the detachable section or plug R the innerend of which is concaved at r to snugly fit the shaft while its outerend has teeth .formed thereon which complete the toothed rim of the pinion. This split piece or plug is securely held in place by means of the steel bolts T which pass through the lugs 1" T the nuts 0 and split keys 1" which pass through the nuts as shown.

By referring to Fig. 1 it will be noticed that each pair of main levers is arranged to be simultaneously operated, that is the clutches on each end of each drum are adapted to be moved into or out of contact with the drum rims in unison. It will also be noticed that by arranging such levers in separate pairs different clutch pressures can be applied to the 'difierent drums at. the same time.

In the practical application of my improved apparatus the drums work with an endless rope a mile long (more or less) the ends of whichare connected to' and wound in similar directions on such drums.

By constructing the clutch devices in the manner before described it will be readily understood that while the tension on one drumis sufficient to bring. in a heavy cypress log, the other can be so nicely adjusted that it will opcrate to let the rope run off as rapidly as it is coming in on the log side. It will also be noticed that my improved clutch devices afford simple and effective means for adjusting the speed of the unwinding drum as the empty drum is being filled so as to compensate for the differential increase and decrease of the diameters of such drums. As the ingoing end of the rope begins to wind upon the empty drum, the clutch devices are applied to the unwinding drum, and such drum is thereby held back by the clutch pressure to run at a slower speed than the winding drum, such speed being however gradually increased (by the clutch adjustment) until the diameters of both drums are equal, after which the clutch devices on the unwinding drum are released and such drum revolved at the speed desired, by the draft on the outgoing rope.

It should be stated, that should any of the friction blocks get loose they will be held from falling out by the annular flanged rims L before referred to, thereby avoiding the possibility of delay in the operation of the machine. Furthermore the flange l of such rim fitting over projecting flanges of the drum sections forms a strengthening piece to resist the outward brake pressure of the clutches.

The clutch lever operating engines before referred to may be of any approved construction, but I prefer to employ the construction shown most clearly in Fig. 8, by reference to which it will be seen that two pistons T T are used to which are connected the oppositely movable piston rods 25 t, the outer ends of which are pivotally connected with the inner ends of the clutch levers J as shown.

IIO

U indicates the steam chest mounted over in the manner: most clearly shown in Figs. 1

and 8.

The slide valve A is a double valve and when the clutches are inoperative, that is, at rest, such'valve is adjusted to the position shown in Fig. 8, but when it is desired to apply the clutches, it is moved inward until the port Y is uncovered when steam will enter in front of both cylinders and draw the levers J inward and apply the clutches. 7 It will be readily understood by referring tothe afore said Fig. 8 thatthe degree of steam pressure upon the pistons depends upon the adjust ment of the valverelatively to the steam supply port. To release the clutch levers the valve is moved outward until the port Y is uncovered, which allows the steam in front I of such pistons to exhaust through the port W, and the same adjustment outward will uncover the port Z and permit of the steam enteringbetween the pistons to force them outward. To allow the piston rods to vibrate they. are pivotallyconnectedto the pistons and pass through the pipes F which operate 5 through thestuffing boxes in'a well known manner. V. r I While I prefer steam power for applying the clutch devices, I desire it understood that I do not limit myself tosuch means, asI may use'hand power for such purpose, as for inj stance such as shown in Fig. 10. In this case effective for the purpose desired it is absolutely necessary that the rope be distributed and laid evenlyand regular upon the drums.

To this end I have provided rope laying de-- vices connected with and operated by the drums, such devices being most clearly shown. in Figs. 4, 5 and 6 of the drawings. One of. such rope laying devices is employed for each drum and each of such devices consists of four upright posts E mounted upon the float ing boat or body and disposed in front of the winding drums.

Upon brackets F secured to the posts E are mounted one abovethe other two shafts G5 G which are geared with the drums as shown. Each of these'shafts has an endless screw or, channel way g and upon it are mounted: smooth bore apertured hub sections H 11*, be-: tween which sheaves 1 I are held to turn, upon and move laterally on the screw shafts G The hub sections H H which are arranged to be moved crosswise back and forth on the screw shafts G are held in a rigid and hand thread, and point.

correct :position by means of four upright shafts-J J K indicates two revolving vertical guide rollers on each side of'the machine which guide the rope and lay it properly on the drum, as it comesin. I V L indicates the spindle-members (one for 'each screw shaft) secured to one of the, hub

sections, each having a stud portion Z which engages the endless channel way or thread on the shafts, as shown. Y

In practice, the draft ropes arefone inch in diameter while the channelways' or screw. a

The object of making the screw thread of a two inch pitch is that at each complete revo threads on the shafts are of a'twjo inch pitch.

lution' of the shaft, the screw'shafts have but one half of a revolution. Thescrew on the said shafts G isacontinuous th'reador chanml, and at the start it is out a right hand thread until-it reaches the opposite end,;when

a transverse channel extending half way round is cut, and then a left hand thread of the same pitch is out which bisects the right In operationassuming the layeris at its innermost or starting position, the stubon the spindle member L isin the beginning of the right hand thread and as the drumshaft is operated motion is imparted to the screw 9 'continuesto the-startilfgtshafts, which slowly moves the laying device across the front face of the drum .until it reaches the opposite end, ,atwhich time the stud enters the transverse'portion' of: the

screw'thread, when thesi'dewise movement off the layeris delayed, so as to permit the rope at this end tov pile up one. full turnbeforethe layer proceeds on its reverse movement, which takes place as soon as the shafts G shall have made their half revolution, at which time the stud enters the left hand thread thereby causing suchlayer to proceed back to its. place of beginning, when the stud enters the opposite Owing to the great length of rope usually I employed in this kind of log pulling machines, it is essential that such winding rope beheld from fouling or getting out of place on such sheave, particularly so when a log reaches-the end of pull and a reverse motion is 'given to the rope. For this purpose a housing 0 is supported over all of the sheave exceptits front'face as most clearly shown in Figs. 8

and S of the drawings-such housing being formed-of two sections bolted together as shown. Each section has its front edge bent inward to a point flush with the peripheral front edge of the sheave as at c and its hori-' 1o paratus constructed as described, presents the requisite strength, durability and capacity necessary to render its use a profitable one in collecting logs in Louisiana swamp landswhere ordinary devices for such purposes cannot be successfully employed.

A further advantage of myimprovement is, that in case of a log striking a stump on the way in the friction devices having only'a suflicient tension to pull the clutches will slip and save the machine, while a rigid clutch would as a rule be broken. I also avoid the use of reversing engines asI make the reverse .byloose drums; hence I save-greatly in time avoiding any stoppage as in case of rev2 5 versing engines.

7 For very heavy work I use butffour brake shoes in the clutch devices, each of which "however is connectedto the sliding hub by two radial levers,arrangedlas clearly shown in'Fig. 11. i

Having thus described my invention, what I claim, and

cut, is

' 1. An apparatus for the purpose described,

- 5 comprisinga movable platform, a drive shaft and driving mechanism mounted thereon, a pair ofwinding drums loosely mounted on such shaft, independently operated brake devices for clutching the drums to the shaft, a

0 fixed swamp or anchor sheave and the pull.

rope passed over such sheave, and having its ends connected to dru ms, all arranged substantially as and for the purposes described.

2. In an apparatus for the purpose described, in combination, the floating boat or platform, the drive shaft and drive mechanism monnted thereon, apair of winding drums loosely mounted on such shaft, independently operated brake devices for clutching such drums to the shaft, the fixed swamp or anchor sheave, the pull rope passed over such sheave, its ends connected to the drums, and rope laying devices mountedlon the platform in advance of the drum, all constructed and arranged substantially in the manner and for the purposes described.

3. In a log pulling device, the combination, with the main or drift shaft, of winding drums loosely mounted thereon, each formed of two sections bolted together, and each section having extending flanges at their outer ends and clutch devices mounted on the shaft arranged desire tosecure by Letters Patto be moved into contact with the internal face of such extended flanges, substantially as described.

4. In a log pulling apparatus,substantially as described, the combination with the main drive shaft, a drum loosely mounted thereon having projecting flanges at its ends of slidin g hubs mounted on said shaft, radial clutch levers pivoted at their lower ends in such hubs, their outer ends having segmental brake shoes pivotally connected thereto,main operating clutch levers pivotally connected to the drum frame and to the sliding collars, and means for simultaneously operating such main clutch levers, allfor the purpose shown and described.

5. The combination with thedrum shaft, a

drum loosely mounted thereon, the sliding clutch hubs, the clutch levers pivoted at their inner ends to such hubs, their outer ends carryingsegmental' brake shoes, adapted to engage the drums, of a pair of'operating levers, one for each sliding clutch,-said levers pivoted at one end to the drum frame, and connected with the sliding clutches near such end,- and deviceconuected to the free ends of the said levers adapted to simultaneously move such levers toward or from-each other to adjust the clutches, substantially as and for the purpose described.

6. In a log pulling machine, the combina tion with the drum shaft and means for rotating it, of a winding drum loosely mounted thereon having flanged outer edges'sliding clutch hubs mounted on such shafts, provided with pivotal clutch arms carrying c'lutchsections at their outer ends having detachable brake blocks and annular .riins projecting over such blocks, and'each formed with flanges extended over the flanges outer edges of the drums and means for operating'th'e clutch 1evers, all substantially as and for the purpose described. I

'7. In alog pulling apparatus substantially as described, the combination with the drum shaft, the flanged winding drums loosely mounted thereon the slidable clutch hubs "held to turn with such shaft, having radially expansible brake members adapted to engage the flanges, of brake levers pivoted to the .drum frame at one side and to the slidable

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