US999178A - Elevated carrier. - Google Patents

Description

A. H. NELLER.

ELEVATED CARRIER.

APPLICATION FILED A'PR.5, 1909.-

Patented July25, 1911.

5 SHEEIS-SHEET 1.

Mia/$4M A. H. NELLER.

ELEVATED CARRIER.

APPLICATION FILED APR. 5, 1909. I 999, 1 7 Patented July 25, 1911.

a SHEETS-SHEET 2;

m W a I 11min A. H. NELLER.

ELEVATED CARRIER.

APPLICATION FILED APR. 5, 1909.

999,178. Patented July .25, 1911.

Jim,

OOLUIIIA Wm 60-. WMHINGNN, D. L

A. H. NELLER.

ELEVATED CARRIER.

APPLIOATION FILED APR. 5, 1909.

Patented July 25, 1911.

6 SHEETS-SHEET 4.

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LUMIIA PLANMRAPN 5a., WASHINGTON. D. c. I

A. H. NELLER.

. ELEVATED CARRIER.

APPLICATION FILED APR.5, 1909.

999,1 78. Patented July 25, 1911.

6 SHEETS-SHEET 5.

COLUMBIA PLANOORAPH C0, WA$HINOTOM D- C.

UNITED STATES PATENT OFFICE.

ALBERT H. NELLER, OF FAIRFIELD, IOWA, ASSIGNOR TO LOUDEN MACHINERY COM- PANY, OF FAIRFIELD, IOWA, A CORPORATION OF IOWA.

ELEVATED OARRIER.

To all whom it may concern Be it known that I, ALBERT H. NELLER, residing at Fairfield, in the county of J efferson and State of Iowa, have invented a new and useful Improvement in Elevated Carriers, of which the following is a specification.

Hy invention relates to that class of elevated carriers wherein the load is elevated by a rope passing over a pulley and is antomatically locked in elevated position at any point by clamping the rope upon the pulley whenever it is slackened or released, the weight of the load itself being the actuating force in accomplishing this result, and it consists of an improvement in the construction and arrangement of the parts whereby the operation is rendered more complete and effective, and also, in other respects, as hereinafter set forth in this specification and more definitely pointed out in the claims.

In the accompanying drawings forming a part of this specification, Figure 1 is a per spective of an elevated carrier embodying the features of my invention. Fig. 2 is an end view of the opposite side of the same, the ropes and load connecting pulleys being removed. Fig. 3 is a transverse sectional view inside of the main frame and showing the interior working parts, the load connecting pulleys being omitted. Fig. 4 is the same, showing the position the working parts assume when the load is locked in elevated position. Fig. 5 is a vertical section taken on a line parallel with the track, as indicated by line 55 in Fig. 3. Fig. 6 is an inside view of one side of the pulley frame. Fig. 7 is a transverse section on line 77 of Fig. 2. Figs. 8, 9, 10, 11, 12, 13, let, 15 and 16 are detail views which are hereinafter explained.

Referring to the drawings, A represents the track upon which the carrier is mounted and B'the trucks carrying the wheels which run upon the track.

C and C are the sides of the pulley frame of the carrier which are duplicates with the exception that one is right and the other left. D is the elevating rope and E is the sheave over which it passes.

F represents the load connecting pulleys which may be arranged in pairs, as shown in Fig. 1, when slings or two forks are used, or singly for one fork only.

Specification of Letters Patent.

Application filed April 5, 1909.

Patented July 25, 1911.

Serial No. 488,149.

G and G are shift ropes which are used to draw the carrier along the track, one in one direction, and the other in the other direction.

The sides C and G are provided with upwardly extending prongs c0 which are adapted to fit pockets ?)b formed on the inner sides of the trucks BB. The sheave E and the rope lock L are mounted between the sides C and C which are held together by bolts 6 passed through coinciding lugs (Z(Z. The prongs cc being inserted in the pockets bb, the trucks and the sides may be securely held together by passing bolts f through them and through a recess a (see Fig. 6) in the upper portion of the sides 0 and C.

The end of the draft rope D is secured to the pulley frame by a clevis H, preferably made in two parts and so as to form a circular opening in its lower end through which the rope is passed. A circular shaped rope holder I is secured to the end of the rope and is adapted to swivel in the clevis so as to let twist out of the rope when necessary.

J is a pin or bolt having an eye on one end and a nut j on the other as shown detached in Fig. 9. The upper ends of the clevis are fitted on its outer sides with pins or bosses h, as shown most plainly in Figs. 7 and 8, the latter figure being an inside perspective of one of the parts of the clevis. The nut 52 being removed, the bolt J is passed up through a loop or eye K on the side of the pulley, the loop on its lower end is caught over the pin h on the clevis, an open coiled spring S is placed on the upper end of the bolt and is held in place by the nut j. The same arrangement is made on the other side of the pulley frame, so the clevis will be supported by the two springs S, as shown in Fig. 7

The lock member L, an inside View of which is shown in Fig. 10, and an outside or top view in Fig. 11, is provided near its center with two outwardly extending axles ZZ, and at its lower corners with two outwardly extending pins or lugs ZZ. The sides of the pulley frame have slightly curved openings 2, as shown in Figs. 1, 2 and 6, through which the axles Z project. Also, smaller straight openings 3, in which the lugs Z are inserted. The openings 2 are set at a slight angle to the periphery of the sheave E so that the movement of the axles Z therein will cause the lock L to move toward or away from the sheave, while the pins Z in the openings 3 will prevent the lock from tilting and these openings being set at the proper angle will also contribute to the movement of the lock toward or away from the sheave.

Surrounding the openings 2, are recessed portions 9" on the inner faces of the sides C and C which are made to receive and support rollers R mounted upon the inner portions of the axles Z.

M represents a bar or keeper which is pivoted at one end to the side C and at the other end to the boss or pin it of the clevis H, as shown in Figs. 1 and 2, and is pro vided near its center with an inwardly projecting lug or pin m, as plainly shown in Fig. 12.

N represents a lever having eyes in its upper and lower ends and also jaws n and a near its lower end, as shown detached in Fig. 13. It is pivoted at its lower end to the side C by a pivot pin 5 almost immediately under the bar M and so the lug or pin on will be in the recess between the jaws. The projecting end of the axle Z is inserted in the eye 6 in the upper end of the lever N which is made slightly oblong and a cotter or pin is used to hold it in place. On the other side 0, there is a duplication of the arrangement of the bar M and lever N.

When there is little or no weight on the elevating pulleys the springs S will hold up the bolts .I, which are connected to the clevis II, and this will raise the attached ends of the bars M, which will cause the lugs m to bear against the upper aws n and this in turn will cause the levers N to turn and their upper ends to raise as shown in Figs. 1 and 2. The upper ends of the levers being connected to the axles Z this will cause them to be pushed up as high as they will go in the openings 2 and the lock L will be held' away from the sheave E. In this position the draft rope D will be free to run over the sheave in either direction. When, how: ever, a suflicient amount of weight is applied to the elevating pulleys it will compress the springs S and the clevis will be drawn down which in turn will bring down the attached end of the bar M and will also bring the lug m down against the lower aw n which will turn down the upper end of the lever N and cause the axles Z to move down in the openings 2 and permit the lock L to come in contact with the rope D. In this position the rope will be free to run forward around the sheave E in the direc tion of the arrow, but not backward.

The tension of the springs S may be adjusted by the nuts 7' so that they will nearly balance the load they have to carry, and then the leverage of the lock against the load is so great that the latter will at no time cause any great pressure of the lock against the rope. Therefore, the rope will easily push the lock out of the way in running forward, but in running backward the lock will be drawn by the rope into rigid engagement therewith, so that in this position, the rope will always be free to run forward but not backward,

In order to insure the grip of the lock instantly against the backward movement of the rope, I have provided the sheave E with a series of lugs O on both sides, and the lock L with a couple of co-acting hooks P, one of which is pivoted on bosses s at each side of the rear end of the lock so that their lower ends Q will be free to catch behind the lugs 0 while their upper ends Q will rest upon the upper side or body of the lock. (See Figs. 3, 4; and 14:). The rear ends of the lugs O are beveled inwardly so as to facilitate the catching of the lower ends of the hooks P under them. In this way the lock L is brought into the most effective contact with the rope to prevent it from running backward while in passing forward the hooks P will float lightly over the lugs O, and the movement of the sheave forward (in the direction of the arrow) will tend to hold the lock away from the rope.

As soon as the load is discharged, and the weight upon the elevating pulleys is relieved the clevis will be drawn up by the springs S carrying with them the bars M and thus lifting the levers N with the lock L to their normal position as shown in, Figs. 1, 2 and 3, whereby the rope will be free to pass backward over the sheave. To prevent the clevis from being drawn too far down by an extremely heavy load, I provide openings 4 in the sides of the carrier below the loop or eye K, and form lugs 71. on the inner sides of the upper ends of the clevis which are adapted to move up and down in this opening and to rest on its lower edge and thus to support the clevis when heavily loaded. This limitation of the movement of the clevis and correspondingly of the bars M and levers N will also serve to prevent any undue pressure of the lock against the rope on account of an extremely heavy load.

As previously made, this style of carrier was liable to let the draft rope run backward as soon as the load is discharged and thus to let the empty fork or sling drop down in the mow, or at any point along the track before arriving at the place where the load is elevated. To prevent this, I have provided a latch T which is pivoted in the frame of the carrier preferably in the trucks B and at right angles to the lock L. The inner end t of this latch is adapted to catch on a ratchet U formed on the top or back of the lock L, and thus to hold the lock in engagement with the draft-rope after the load is discharged and its action on the lock is released. To make it more sensitive and quicker in action a small catch plate V is pivoted to the end t of the latch and is extended out beyond the catching edge approximately half the width of the ratchet notches apart, thus enabling the latch to catch and hold the lock practically every half space of the ratchet. The catch plate V is preferably made of malleable iron with two small pointed pins or projections 29 which are loosely inserted in holes in the end 6 and headed sufficiently to hold the plate loosely thereto. Views of the under sides of the latch T and plate V are shown plainly in Fig. 15.

To release the latch from the lock, I attach to the track A, a downwardly depending member comprising a bar preferably of inverted T-shape, which is secured immediately below the track where the load is elevated by means of clamps X and X. These clamps are made in pairs, right and left having the outer ends beveled and adapted to clamp on the lower head of the rail A and on the ends of the bar (See Fig. 16.) The piece X is fitted with a pin a: to fit in a hole in the end of the bar V and into a hole 0 in the opposite piece. The arrangement is the same at both ends of the bar, and by this means it is securely held in place, the clamps being secured to the head of the track-rail by suitable bolts or otherwise.

The latch is released from the look by the end t of the latch T coming in contact with the clamps X and X and the bar W which lifts the catch end t away from the ratchet on the lock. The shift ropes G and G are secured to eyes 9 and g which are preferably swiveled in the pulley sides C and C. The rollers R iounted on the axles Z and running in the recesses 1" makesthe movement of the lock L more responsive and more easily operated and the eye 6 in the upper ends of the levers N being oblong the rollers will be free to follow any variation there may be between the curve of the recesses and the line of movement of the upper ends of the levers N.

On the back end of the lock is formed a lug Y having a perforation to which a cord y may be attached, the object being to provide means to prematurely release the lock. This is not often necessary but once in a while something may get caught in elevating and it may be preferable to lower the load to get free from the obstruction. To provide for such an emergency, a cord may be passed through either of the eyes Z in the upper part of the carrier frame, and attached to this lug, and the carrier standing on the track over the release bar W, and the latch T being held by the bar away from the ratchet U, the lock may be drawn from the position shown in Fig. 4 to that in Fig. 3, so the load may be lowered instead of elevated.

It will be readily understood by those skilled in the art that the load may be elevated to any desired height, no matter how far below the track, and then be drawn into the mow in either direction by one or the other of the shift ropes G or G. The cl-evis H to which one end of the elevating rope is secured having its ends pivotally connected to the pins J, one on each side of the pulley frame, will be evenly and securely supported and will be free to swing out from the perpendicular line as may be required to accommodate the different positions of the load connecting pulleys F, which frequently have to be spread some distance apart. The pins J being projected above the loop K on the outside of the pulley frame, are free from any obstructions and the nuts j may be readily taken off to remove and replace the springs S, or be adjusted to regulate the tension of the springs, as may be required.

The lock member L is made in an improved form, its body being wider than the sheave E and having wings on each side to straddle the sheave while its rear end is shouldered to receive and support the pivoted hooks P close to the sides of the sheave. Also, the sheave E having the lugs O on both sides and hooks on both sides of the lock to engage them, the operation is rendered more certain and is better balanced than if only on one side as heretofore made. Furthermore, the hook P being approxi mately C-shaped and centrally pivoted so as to straddle shoulders on the lock, and their lower ends being well inclined toward the lugs 0, will operate more easily and will clamp the look more securely on the rope than when made in the ordinary way.

The jaws n and n on the lever N are set wide enough apart to afford a certain amount of play for the lug m of the bar M. The hooks P also have considerable play and in this way a heavy load will not draw the lock or the hooks down against the sheave E so as to cause friction in elevating, and at the same time, the hooks P will be held in immediate contact with the lugs O,ready to catch under them the instant the sheave starts backward. The entire apparatus is simple and compact. It is easily and quickly adjusted and operated and is effective in its work.

While chiefly designed for use with ele vated carriers, wherein the load is elevated by a rope drawn cross-wise, and the carrier is then drawn along the track by a rope, or ropes running parallel therewith, the main features of the invention may be used in any device wherein the load is elevated by a rope passing over a sheave and which has to be held suspended when the sustaining power is released.

hat I claim is 1. In elevated carriers, an overhead track having a downwardly depending member attached to its lower edge, a carrier adapted to run on the track, a sheave mounted in the frame of the carrier for the passage of a hoisting rope thereover, a lock-member mounted in the carrier frame and adapted to move forward and back over the sheave in a line forming a wedge shaped angle with the periphery of the sheave so as to grip and release the rope thereon, and a latchmember pivoted in the frame of the carrier so its lower end will contact with the lockmember and its upper end will contact with the depending member on the track and release its lower end from the lock-member.

2. In elevated carriers, an overhead track having a downwardly depending member attached to its lower edge, a carrier adapted to run on the track, a sheave mounted in the frame of the carrier for the passage of a hoisting rope thereover, a lockmember mounted in the carrier frame and adapted to move forward and back over the sheave in a line forming a wedge shaped angle with the periphery of the sheave so as to grip and release the rope thereon, and a latchmember pivoted in the frame of the carrier so its lower end will contact with the lockmember and hold it in engagement with the rope and its upper end will contact with the depending member on the track to release its lower end from the lock-member.

3. In elevated carriers, an overhead track having a downwardly depending member attached to its lower edge, a carrier adapted to run on the track, a sheave mounted in the frame of the carrier for the passage of a hoisting rope thereover, a lock-member mounted in the carrier frame and adapted to move forward and back over the sheave in a line forming a wedge shaped angle with the periphery of the sheave so as to grip and release the rope thereon, said loclrmember having a ratchet on its upper side, and a latch member pivoted in the frame of the carrier so its lower end will contact with the ratchet on the lock-member and its upper end will contact with the depending member on the track to release it from the lock-member.

4. In elevated carriers, an overhead track having a downwardly depending member attached to its lower edge, a carrier adapted to run on the track, a sheave mounted in the frame of the carrier at right angles to the track, a lockanember adapted to move for ward and back over the sheave in a line forming a wedge shaped angle with the periphery of the sheave, and a latch-member pivoted in the frame of the carrier in a line parallel with the track so its lower end will contact with the lock-member and its upper end will contact with the depending-member on the track and release its lower end from the lock-member.

5. In elevated carriers having a pulley through which an elevating rope passes, a lock member adapted to move forward and back over the sheave of said pulley in a line forming a wedge shaped angle with its periphery, so as to grip and hold the rope thereon, a ratchet on the lock, and a latch member carrying a pivoted plate to catch on the ratchet and hold the lock in engagement with the rope.

6. In elevated carriers having a pulley through which an elevating r pe passes, a lock member adapted to move forward and back over the sheave of said pulley in a line forming a wedge shaped angle with its periphery, so as to grip and hold the rope thereon, a ratchet on the look, a latch member carrying a pivoted plate to catch on the ratchet and hold the lock in engagement with the rope, and means to release the latch therefrom.

7. In elevated carriers, aframe having a sheave mounted therein for the passage of a hoisting rope thereover, a slot in each side of the frame set opposite and at a wedge shaped angle to the periphery of the sheave, and a lock-member having a projecting pin on each side passed through said slots and adapted to move forward and back therein so as to bear against one side of the slots and to cause the lock-member to grip a rope directly against the groove of the sheave and to be releasable therefrom.

8. In elevated carriers, a frame having a sheave mounted therein for the passage of a hoisting rope thereover, two slots in the frame, one of them being set at a wedge shaped angle to the periphery of the sheave and the other being set at a more acute angle thereto, and a lock-member having two projecting pins passed through said slots and adapted to move forward and back therein to cause the lock-member to grip a rope against the groove of the sheave and to be releasable therefrom.

9. In elevated carriers, a frame having a sheave mounted therein for the passage of a llOiStiHg rope thereover, two slots in each side of the frame, one of them on each side being set at a wedge shaped angle to the periphery of the sheave and the others being set at a more acute angle thereto, and a lock-member having two projecting pins on each side passed through said slots and adapted to move forward and back therein to cause the lock-member to grip a rope against the groove of the sheave and to be releasable therefrom.

10. In a device of the character described, a frame having openings in its sides, and

recesses in the inner faces of said sides surrounding the openings, a sheave mounted in the frame between the sides, a lock member inserted between the sides and having a laterally projecting axle on each side of its body projecting out through the opening, and rollers mounted on said axles and adapted to run in said recesses, so that the movement of the lock forward and back will be on a line forming a wedge shaped angle with the periphery of the sheave.

11. In a device of the character described, a frame having two sets of openings in its sides, and recesses in the inner faces of said sides surrounding one of the openings on each side, a sheave mounted in the frame between the sides, a lock member inserted between the sides and having a laterally projecting axle on each side of its body near its center, and lugs at one end on its opposite corners, the axles projecting out through the recessed openings and the lugs through the other openings, and adapted to move forward and back therein, and rollers mounted on the axles and adapted to run in the recesses so that the movement of the lock forward and back will be on a line forming a wedge shaped angle with the periphery of the sheave.

12. In a device of the character described, a frame having two sets of openings in its sides, and recesses in the inner faces of said sides surrounding one of the openings on each side, a sheave mounted in the frame between the sides, a lock member inserted between the sides and having a laterally projecting axle on each side of its body near its center, and lugs at one end on its opposite corners, the axles projecting out through the recessed openings and the lugs through the other openings, and adapted to move forward and back therein, rollers mounted on the axles and adapted to run in the recesses and means connected to and operating the axles so that the movement of the lock forward and back will be on a line forming a wedge shaped angle with the periphery of the sheave.

13. In a device of the character described, a frame having two sets of openings in its sides, and recesses in the inner faces of said sides surrounding one of the openings on each side, a sheave mounted in the frame between the sides, a lock member inserted between the sides and having a laterally projecting axle on each side of its body near its center, and lugs at one end on ifs opposite corners, the axles projecting out through the recessed openings and the lugs through the other openings, and adapted to move forward and back therein, rollers mounted on the axles and adapted to run in the recesses, and levers connected tothe axles on each side and mounted on the sides of the frame and operated so as to move the lock forward and back 011 a line forming a wedge shaped angle with the periphery of the sheave.

14. In a device of the character described, a frame, a sheave mounted in said frame for the passage of a hoisting rope thereover, lat erally extending lugs on the rim of the sheave, a lock-member having a shouldered end and a body wider than the thickness of the sheave mounted in the frame and adapted to move on a line forming a wedge shaped angle with the rim of the sheave, and a curved hook pivoted on the shouldered end so its upper end will rest on the upper side and its lower end will extend below the under side of the lock-member and will. engage the lugs on the rim of the sheaves.

15. In a device of the character described, a frame, a sheave mounted in said frame for the passage of a hoisting rope thereover, laterally extending lugs on each side of the rim of the sheave, a lock-member having an end shouldered on both sides and a body wider than the thickness of the sheave mounted in the frame and adapted to move on a line forming a wedge shaped angle with the rim of the sheave, and a curved hook pivoted on each side of the shouldered end so their upper ends will rest on the upper side and their lower ends will extend below the under side of the lock-member and will engage the lugs on the rim of the sheave.

16. In a device of the character described, a frame, a sheave mounted in said frame for the passage of a hoisting rope thereover, lat erally extending lugs on each side of the rim of the sheave, a lock-member having an 17. In a device of the character described,-

a pulley frame, a sheave mounted in said frame, laterally extending lugs on both sides of the rim of said sheave, a lock member having shoulders on one of its ends and mounted in the frame between the sides and adjacent to the sheave, its body being wider than the thickness of the sheave, hooks piv oted on said shouldered end in the rear of the body of the lock and adapted to engage the lugs on both sides of the sheave, and means to move the lock forward and back on a line forming a wedge shaped angle with the rim of the sheave.

18. In a device of the character described, a pulley frame, a sheave mounted in said frame, laterally extending lugs on both sides of the rim of said sheave, a lock member having shoulders on one of its ends and mounted in the frame between the sides and adj acent to the sheave, its body being wider than the thickness of the' sheave and having downwardly extending wings on each side thereof, hooks pivoted on said shouldered end in the rear of the body of the lock and adapted to engage the lugs on both sides of the sheave, and means to move the lock forward and back on a line forming a wedge shaped angle with the rim of the sheave.

19. In a device of the character described, a pulley frame, having openings in its opposite sides, a sheave mounted in said frame between the sides, a lock member mounted in the frame adjacent to the sheave, its body being wider than the thickness of the sheave and having wings integral therewith extending downwardly on each side of the sheave, laterally extended axles on its opposite sides projecting through said openings, means'of engagement between the lock member and the sheave, and means connecting with the axles outside of the sides of the frame and causing the lock to move forward and back on a line forming a wedge shaped angle with the rim of the sheave.

20. In a device of the character described, a pulley frame having openings in its sides, recesses in the inner faces of the sides surrounding the openings, a sheave mounted in said frame between the sides, a lock member mounted in the frame adjacent to the sheave, its body being wider than the thickness of the sheave and having wings extending downwardly on each side of the sheave, laterally extended axles projecting through said openings, rollers mounted on said. axles and adapted to run in the recesses, means of engagement between the lock member and the sheave, and means connecting with the axles outside of the frame and causing the lock to move forward and back on a line forming a wedge shaped angle with the rim of the sheave.

21. In a device of the character described, a pulley frame having two elongated open ings, in each of its sides, a sheave mounted in said frame between the sides, a lock member having its adjacent face curved to correspond with the sheave, and placed in the frame adjoining it, laterally extended pins or axles on the body of the lock projecting through one of the openings in each of the sides, lugs on opposite corners of the lock at one end projecting through the other openings and means connected to the axles to operate the lock and cause it to move forward and back on a line forming a wedge shaped angle with the rim of the sheave.

22. In a device of the character described, a pulley frame having two elongated openings, set at an angle to each other in each of its sides, a sheave mounted in said frame between the sides, a lock-member having its adjacent face curved to correspond with the sheave, and placed in the frame adjoining it, laterally extended pins or axles on the body of the lock projecting through one of the openings in each of the sides, lugs on opposite corners of the lock at one end projecting through the other openings so as to hold the lock in proper position and means connected to the axles to operate the lock and cause it to move forward and back on a line forming a wedge shaped angle with the rim of the sheave.

23. In a device of the character described, a pulley frame having two elongated openings, in each of its sides, recesses in the inner faces of the sides surrounding the larger openings, a sheave mounted in said frame between the sides, a lock member having its adjacent face curved to correspond with the sheave and placed in the frame adjoining it, laterally extended pins or axles on the body of the lock projecting through one of the openings in each of the sides, rollers mounted on said axles and adapted to run in said recesses, lugs on opposite corners of the lock at one end projecting through the other openings and means connected to the axles to operate the lock and cause it to move forward and back on a line forming a wedge shaped angle with the rim of the sheave.

24. In a device of the character described, a pulley frame having openings in its sides, a sheave mounted in said frame between the sides, a rope passed over the sheave, a lock member placed in the frame adjoining the sheave and having laterally extending parts projecting through said openings, means connected to said parts and operating so as to cause the lock to move on a line forming a wedge shaped angle with the rim of the sheave and to grip the rope thereon.

25. In a device of the character described, a pulley frame having openings in its sides, a sheave mounted in said frame between the sides, a rope passed over the sheave, a lock member placed in the frame adjoining the sheave and having laterally extending parts projecting through said openings, means connected to said parts and operating so as to cause the lock to move on a line forming a wedge shaped angle with the rim of the sheave and to grip the rope thereon, and means to hold the lock in engagement therewith.

26. In a device of the character described, a pulley frame having openings in its sides, a sheave mounted in said frame between the sides, a rope passed over the sheave, a lock member placed in the frame adjoining the sheave and having laterally extending parts projecting through said openings, means connected to said parts and operating so as to cause the lock to move on a line forming a wedge shaped angle with the rim of the sheave and to grip the rope thereon, a latch to hold the lock in engagement with the rope and means to release the latch therefrom.

27. In a device of the character described, a pulley frame composed of two sides joined together, a sheave mounted in said frame between the sides, an elevating rope pased over the sheave, a lock member mounted in the frame above the sheave, loops formed on the opposite outer sides of the frame, bolts extended up through said loops and outside the frame and having resilient means for holding them in elevated position, means for connecting one end of the rope to the lower ends of the bolts on opposite sides of the frame, and means connecting the bolts with the lock member so that the movement of the bolts up and down will cause the lock to move forward and back and to approach toward and to recede from the sheave so as to grip the rope thereon and to release it therefrom.

28. In a device of the character described, a pulley frame composed of two sides joined together, a sheave mounted in said frame between the sides, an elevating rope passed over the sheave, a lock member mounted in the frame above the sheave, loops formed on the opposite outer sides of the frame, bolts extended up through said loops and outside the frame, nuts on the upper ends of said bolts, open coiled springs placed on the bolts below the nuts and adapted to rest on the loops and hold the bolts in elevated position, means for connecting one end of the elevating rope with the lower ends of the bolts on opposite sides of the frame, and means connecting the bolts with the lock member so that the movement of the bolts up and down will cause the lock to move forward and back and to approach toward and to recede from the sheave so as to grip the rope thereon and to release it therefrom.

29. In a device of the character described, a pulley frame composed of two sides oined together, a sheave mounted in said frame between the sides, an elevating rope passed over the sheave, a lock member mounted in the frame above the sheave, loops formed on the opposite outer sides of the frame, bolts extended up through said loops and outside the frame, and eyes on their low-er ends under the loop, nuts on the upper ends of the bolts and open coiled springs placed on the bolts below the nuts and adapted to rest on the loops and hold the bolts in elevated position, a clevis connected to the eyes in the lower ends of each of the bolts, one end of the elevating rope connected to the clevis, and means connecting the clevis with the lock member so that its movement up and down will cause the lock to move forward and back and to approach toward and recede from the sheave so as to grip the rope thereon and to release it therefrom.

30. In a device of the character described, a pulley frame composed of two sides oined together, a sheave mounted in said frame between the sides, an elevating rope passed over the sheave, a lock member mounted in the frame above the sheave, loops formed on opposite sides of the frame, bolts extended up through said loops, and eyes on their lower ends under the loops, nuts on the upper ends of the bolts and open coiled springs placed on the bolts below the nuts and adapted to rest on the loops and hold the bolts in elevated position, a clevis having on its upper ends outwardly extending pins inserted in the eyes of the bolts, an eye in the lower central part of the clevis, one end of the elevating rope being secured to the clevis so as to swivel in the eye, and means connecting the clevis with the lock member so that its movement up and down will cause the lock to move forward and back and to approach toward and recede from the sheave so as to grip the rope thereon and to release it therefrom.

31. In a device of the character described, a pulley frame composed of two sides joined together, a sheave mounted in said frame between the sides, an elevating rope passed over the sheave, a lock member mounted. in the frame above the sheave, loops formed on opposite sides of the frame, bolts extended up through said loops, and eyes on their lower ends under the loops, nuts on the upper ends of the bolts and open coiled springs placed on the bolts below the nuts and adapted to rest on the loops and hold the bolts in elevated position, a clevis having on its upper ends outwardly extending pins inserted in the eyes of the bolts, an eye in the lower central part of the clevis, one end of the elevating rope passed through said eye, a holder secured to the end of the rope above the eye and adapted to swivel therein, and means connecting the clevis with the lock member so that its movement up and down will cause the lock to move forward and back and to approach toward and recede from the sheave so as to grip the rope thereon and to release it therefrom.

32. In a device of the character described, a pulley frame composed of two sides joined together, a sheave mounted in said frame between the sides, an elevating rope passed over the sheave, a lock member mounted in the frame above the sheave, loops formed on the opposite sides of the frames, bolts extended up through said loops, and eyes on their lower ends under the loops, nuts on the upper ends of the bolts and open coiled springs placed on the bolts below the nuts and adapted to rest on the loops and hold the bolts in elevated position, a clevis having on its upper ends outwardly extending pins inserted in the eyes of the bolts, and inwardly extending lugs adapted to enter vertical openings in the sides of the pulley frame to limit the vertical movement of the clevis, one end of the elevating rope being connected to the clevis and means connecting the clevis with the lock member so that its movement up and down will cause the lock to move forward and back, and to approach toward and recede from the sheave so as to grip the rope thereon and to release it therefrom.

In a device of the character described, a pulley frame composed of two sides joined together, a sheave mounted in said frame between the sides, an elevating rope passed over the sheave, a lock member mounted in the frame above the sheave, a spring supported clevis one end of the elevating rope being secured to said clevis, horizontally disposed bars pivoted at one end to the sides of the pulley frame, lugs on the inner central port-ion of the bars, levers pivoted at one end to the pulley sides adjacent to the lugs, jaws on said levers embracing said lugs and the other ends of the levers connected with the lock member so that the movement of the clevis up and down will cause the lock to move forward and back and to approach toward and recede from the sheave so as to grip the rope thereon, and to release it therefrom.

34. In a device of the character described, apulley frame having openings in its sides, a sheave mounted in the frame between the sides, an elevating rope passed over the sheave, a lock member placed in the frame above the sheave and having outwardly projecting axles projecting through the openings and adapted to move therein, a vertically disposed spring supported member, one end of the elevating rope secured to said member, and means connecting said member with the axles so that its movement up and down will cause the lock to move forward and back and to approach toward and recede from the sheave so as to grip the rope thereon and release it therefrom.

In a device of the character described, a pulley frame having openings in its sides, a sheave mounted in the frame between the sides, an elevating rope passed over the sheave, a lock member placed in the frame above the sheave and having outwardly projecting axles projecting through the openings and adapted to move therein, a vertically disposed spring supported clevis, one end of the elevating ropes secured to said clevis, and means connecting said clevis with the axles so that its movement up and down will cause the lock to move forward and back and to approach toward and recede from the sheave so as to grip the rope thereon andv to release it therefrom.

86. In a device of the character described, a pulley frame having openings in its sides, a sheave mounted in the frame between the sides, an elevating rope passed over the sheave, a lock member placed in the frame above the sheave and having outwardly projecting axles extending through the openings and adapted to move therein, a vertically disposed spring supported member, one end of the elevatin rope secured to said member, horizontally disposed bars pivoted at one end to the sides of the frame and at the other connected to said member, and means connecting said bar with the axles so that its movement up and down will cause the lock to move forward and back and to approach toward and recede from the sheave so as to grip the rope thereon and to release it therefrom.

87. In a device of the character described, a pulley frame having openings in its sides, a sheave mounted in the frame between the sides, an elevating rope passed over the sheave, a lock member placed in the frame above the sheave and having outwardly projecting axles projecting through the openings and adapted to move therein, a vertically disposed spring supported member, one end of the elevating rope secured to said member, horizontally disposed bars pivoted at one end to the sides of the frame and at the other connected to said member, and having inwardly pointing lugs near their centers, and levers pivoted at their lower ends to the sides of the frame adjacent to and having jaws embracing said lug so as to move the levers in both directions on their pivots, the upper ends of the lovers being connected to the axles so as to move the look forward and back and cause it to approach toward and recede from the sheave so as to grip the rope thereon and to release it therefrom.

38. In a device of the character described, an overhead track, a carriage to run on said track and provided with a pulley frame set at right angles thereto, a sheave mounted in the frame between the sides thereof an elevating rope passed over the sheave, a lock member mounted above the sheave and adapted to move forward and back so as to approach toward and recede from the sheave and to grip the rope thereon, a ratchet on the back of the lock and a latch pivoted in the frame of the carriage at substantially right angles to the lock and adapted to engage the ratchet and hold the lock in engagement with the rope.

39. In a device of the character described, an overhead track, a carriage to run on said track and provided with a pulley frame set at right angles thereto, a sheave mounted in the frame between the sides thereof an elevating rope passed over the sheave, a lock member mounted above the sheave and adapted to move forward and back so as to approach toward and recede from the sheave and to grip the rope thereon, a ratchet on the back of the look, a latch pivoted in the frame of the carriage at substantially right angles to the lock and adapted to engage the ratchet and hold the lock in engagement with the rope, and means to release the latch from the ratchet.

40. In a device of the character described, an overhead track, a carriage to run on said track and provided with a pulley frame, a sheave mounted in the frame between the sides thereof an elevating rope passed over the sheave, a lock member mounted above the sheave and adapted to move forward and back so as to approach toward and recede from the sheave, and to grip the rope thereon, a ratchet on the back of the lock, a latch pivoted in the frame of the carriage and adapted to engage the ratchet and hold the lock in engagement with the rope, and a release bar attached to the track so as to operate the latch and free it from the ratchet.

a l. In a device of the character described, an overhead track, a carriage to run on said track and provided with a pulley frame, a sheave mounted in the frame between the sides thereof an elevating rope passed over the sheave, a lock member mounted above the sheave and adapted to move forward and back so as to approach toward and recede from the sheave, and to grip the rope thereon, a ratchet on the back of the look, a latch pivoted in the frame of the carriage and adapted to engage the ratchet and hold the lock in engagement with the rope, clamps secured to the lower edge of the track and a release bar held by the clamps so as to 0perate the latch and free it from the ratchet.

42. In a device of the character described, an overhead track, a carriage to run on said track and provided with a pulley frame, a sheave mounted in the frame between the sides thereof an elevating rope passed over the sheave, a lock member mounted above the sheave and adapted to move forward and back so as to approach toward and recede from the sheave, and to grip the rope thereon, a ratchet on the back of the lock, a latch pivoted in the frame of the carriage and adapted to engage the ratchet and hold the lock in engagement with the rope, clamps having their outer ends upwardly beveled secured to the lower edge of the track, a release bar held by the clamps so as to operate the latch and free it from the ratchet.

ALBERT H. NELLER. Witnesses:

ROY LoUnEN, LAURA J. KAMP.

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

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