US490984A - Rope-leader for winding-drums - Google Patents

Description

(No Model.)

. N..H. PIN-E. ROPE LEADER FOR WINDING DRUM-S-v No. 490,984. PatentedJanQ 31,1 11893;

THE "cams warms co" Pnoraumn" WASNXNGTON n. c.

UNITE STATES PATENT OFFICE.

NORTON H. PINE, or EUREKA, CALIFORNIA.

ROPE-LEADER FOR WINDING-DRUMS.

SPECIFICATION forming part of Letters Patent No. 490,984, dated January 31, 1893.

Application filed June 20, 1892.

To all whom it may concern:

Be it known that I, NORTON I-I. PINE, a citi zen of the United States, residing at Eureka, Humboldtcounty, State of California, have invented an Improvement in Rope-Leaders for Winding-Drummand I hereby declare the following to be a full, clear, and exact description of the same.

My invention relates to a device which I call a rope leader for winding drums.

It consists in a mechanism whereby a rope is caused to wind evenly from one end of the drum to the other, to prevent overriding and injury, and in an automatic means for reversing the movement of the leader upon reaching either end of the drum.

It also consists in certain details of. construction which will be more fully explained by reference to the accompanying drawings,

in which Figure l'is a plan viewof my rope winding arrangement. Fig. 2 is an end view of the leader. Fig. 3 is a side view of the same. Fig. 4 shows the reversing mechanism. Fig. 5 is a bottom view of the leader showing the nut operating mechanism.

A is the drum upon which the cable is to be coiled.

B is a gear-wheel at the end through which power is applied to rotate the drum by means ofa pinion 0 upon the counter-shaft D, power being applied to this counter-shaft in any suitable or desired manner.

At a suitable point in front of the drum A is the leader which consists of vertically mounted pulleysE upon a traveler F. These pulleys are sufficiently far apart to allow the cable to pass between them, and the traveler F has a screw-threaded nut attached to or formed with it, adapted to clasp a horizontal screw G, and the rotation of this screw causes the traveler to move from one end to the other of the screw.

The screw is rotated as follows:Upon' the end of the screw-shaft is a ratchet wheel II. The teeth of this ratchet wheel are engaged by either end of the double pawl I or I. This pawl is formed by a yoke which is centrally pivoted or fulcrumed as shown at J upon an oscillating arm K. This arm is fitted to oscillate'about the extension of the screw-shank Serial No. 437,385. (No model.)

causes the arm K to oscillate about its center.

When the end I of the pawl engages the. teeth of the ratchet wheel H it will be manifest that when the arm Kis moved in one direction this pawl engages the teeth so as to rotate the ratchet wheel H, and when the arm moves in the opposite direction, the pawl will move loosely over the ratchet teeth and allow the ratchet wheel to remain stationary. this means the screw G'willbe rotated and the traveler F will be moved from one end to the other of the screw. The pitch of the screw and the rapidityof movement is such as to cause the traveler to carry the rope or cable 0 along sufficiently fast to wind it regularly upon the drum. When the end of the drum has been reached it is necessary to reverse the movement of the ratchet and the screw so as to return the traveler to the opposite end of the drum, thus coiling a-rope in another layer. This reversing takes place as follows:Through each of the ends I I of the double pawl pass the vertical rods P and P and these are acted upon by springs Q which surround the rods P P, and have one end pressing against-the pawl while the opposite ends press against'the collars R secured to the rods P P by set screws as shown. The lower ends of the rods P P are bent outwardly as shown at S and they are alternately engaged by the rocker'armsT which are fulcrumed to the frame-Work upon each side of the extension of the screw-shaft G, and by the side of the ratchet wheel H.

U U are tracks fixed to the traveler and bent into a curve as shown.

V V are rods having arms projecting from the side carrying anti-friction rollers W which are engaged by the curved or cam-shaped tracks U when the traveler approaches them. One of these rollers W is connected with its rod V near one end of the screw and upon one side of it, and the other is connected with its rod near the other end of the screw and upon the opposite side. When the traveler approaches the end of its travelin one direction, the curved or cam-shaped track U engages the roller WV at that end, and raises it, thereby turning the rod V, this rod V being connected with one of the rocker arms T, will tilt it to stand at an angle as shown in Fig. 4. The movement of this rocker arm is so timed that it will be thrown to the angle described at the moment when the pawl carrying arm K has been moved to its greatest distance in the same direction, and when the pawl carrying arm commences to return its stroke, the upper end of the armT will come to stand beneath the angular projection S of the rod P upon that side. As the arm K continues its motion toward the arm T, it will be manifest that the latter will act upon the angular projection S and will thus force the rod P upwardly through the hole in the pawl I until the compression of the spring Q is such that it tilts the pawl and causes the end I to e11- gage the teeth of the ratchet wheel H, and at the same time raises the pawl I out of engagement with these teeth. This action moves the point Ct of the spring I) from the notch which it occupies on one side of the fulcrum pin J to the corresponding notch on the opposite side and this spring then acts to hold the point I in contact with the ratchet wheeltakes place when it reaches the other end of the screw and the action is again reversed, thus automatically winding the rope from one side to the other.

In order to make the explanation of the device easy, I have shown a single eccentric and a single ratchet wheel, but it will be manifest that twoeccentrics may be employed, each operating upon the pawl and ratchet wheel connected with the screw, so that the motion of the screw will be made twice as fast as with a single construction, the reversing mechanisms operating in a similar manner for two as for one.

When it is desired to uncoil the rope, the nut g which fits the screw is opened so as to allow the screw to move freely through the nutwithout action thereon. This may be done in various ways. In the present case I have shown the nut made in two parts hinged together and having pins 0 traveling in slots cl in a disk 6. This disk has an armf which is turned so as to rotate the disk in one direction, and the action of the cam slots d upon the pin 0 will open the nut, and when turned in the opposite direction they will close it.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is l. A rope leader for winding drums consisting O gZffi traveler having guides between which therope or cable passes before reaching the drum, a screw parallel with the axis of the drum and attached to the traveler so as to move the latter from end to end, a mechanism by which the screw is rotated consisting of a ratchet wheel fixed to the screw shaft, an oscillating arm fulcrumed to turn about the screw-shaft, a double pawl fulcrumed upon the oscillating arm and adapted to engage the teeth of the ratchet-wheel, an eccentric mounted upon a rotating shaft, a connecting rod uniting it with the oscillating arm whereby the pawl is moved over the ratchet wheel when the latter and screw are rotated, and means for shifting the pawl when the traveler has reached either end of. the screw substantially as herein described.

2. In a rope leader for winding drums, a traveler having guides between which the rope orcable passes before reaching the drum, a screw parallel with the axis of the drum, a nut fixed to the traveler and movable upon said screw, mechanism by which said screw is rotated consisting of a ratchet wheel, a double pawl one end of which engages the ratchet wheel to rotateit in one direction and the other to rotate it in the other, in combination with a mechanism whereby one end of the pawl is disengaged and the other is engaged when the traveler has reached either end of the screw, substantially scribed.

3. In a rope leader for winding drums, the rotating screw, the travelerhaving a nut adapted to move upon'said screw and guides between which the rope passes before reaching the drum, an oscillating arm having a double pawl either end of which engages the teeth of the ratchet wheel, and a spring by which either end is held in engagement with the teeth, in combination with the vertically movable rods P and P passing through the ends of the pawl, springs Q surrounding the rods and acting upon the pawl, rocker arms T by which either one or the other of the rods P P are forced upward to reverse the pawl, and the rods with which the rocker arms are connected, together with the camshaped tracks U upon the traveler, and the arms W whereby the rocker armsT are moved and the reversal of the pawl takes place, substantially as herein described.

In witness whereof I have hereunto set my hand.

as herein de- NORTON H. PINE. Witnesses:

S. H. NOURSE,

H. F. ASCHEOK.

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