US821305A - Rope-drum. - Google Patents

Description

No. 821,305. PATENTED MAY 22, 1906.

T. S. MILLER.

ROPE DRUM.

APPLICATION FILED MAR.16.1903. RENEWED JAN.22,1904.

2 SHEETSSHEET 1.

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wane/Mum mm! w. SQQZM PATBNTED MAY 22, 1206.

7 T. S. MILLER.

,ROPB DRUM. APPLICATION TILED MAIL16. 120s. RENEWED JAN. 22, 1204.

F n I v 2 SHEETS-SHEET 2.

UNTTED PATENT OFFTQEO RUPE- Specification Letters Patent.

DRUM.

Patented May 22, 1906.

Application filed March 16, 1903- Renewed January 22, 1904. Serial No: 190,170.

To all whom, it may concern:

Be it known that I, THOMAS SPENCER MIL- LER, of South Orange, county of Essex, and State of New Jersey, have invented a new and useful Improvement Applicable to Rope- Drums, of'which the following is a specification.

The object which has primarily led to the making of my invention is to eliminate the thrust-pin friction which has heretofore been the source of great annoyance and disadvantages and loss of power in such rope-drum mechanism as that shown, for example, in the Beekman patent, No. 541,308; but my invention embodies principles which are susceptible of a broader field of application.

In the accompanying drawings, Figure 1 is I a rope-drum, partly in section, embodying my invention. Figs. 2 and 3 are details.

1 and 2 are stationary end frames carrying the bearings of the shaft 3.

4 is the bushing of the bearing in the frame 2, which bushing contains the interior flanges 5 and 6, projecting intocorresponding grooves of the shaft to hold the shaft against longitudinal movement.

7 is the prime mover of the mechanism, which in this case is a spur-wheel driven from any suitable source of power and fixed upon the shaft 3.

8 is the friction-ring, fixed to the face of the spur-wheel and preferably composed of sections of wood in the form shown.

9 is the rope-drum, carrying the flange 10, containing the groove which cooperates with the friction-ring 8 to form a friction-clutch. This drum is so mounted upbn the shaft 3 as to have freedom of both longitudinal and circumferential movement thereon.

11 is the band-brake, cooperating with th exterior of the drum-flange 10.

12 is a coiled spring interposed between the hubs of the spur-wheel and drum and tending to separate the surfaces of the friction-clutch.

13 is the cross-key, operating in a slot ex tending diametrically through the shaft and arrangedto thrust the drum toward the spurwheel in antagonism to the spring 12, so as to set the clutch.

14 is the thrust-pin, operating against the cross-key and extending thence through the center of the shaft to and beyond the end thereof.

15 is a yoke secured to the outer side of the thrusting the pin 14 by the power of the hand-v screw 17:

18 is a shell or case fixed on the end of the shaft 3 outside of the frame 2 and containing the internal chamber 19, into which projects the end of the thrust-pin 14. Into the opposite end of this chamber is screw-threaded a cap 20, containing a central opening 21, through which the end of the hand-screw 17 projects into the chamber 19.

22 and 23 are two heads movable longitudinally in the chamber 19 and connected by the toggles 24, 24, 25, and 25. The head 22 abuts against the end of the thrust-pin 14, and the head 23 abuts against the adjustable cap 20, from which it is separated by a felt washer 26. Fixed to the end of the shaft of the hand-screw 17 is a tapering head 27, the sides of which are preferably of the curvature shown.

28 and 29 are stops arranged between the walls of the case 18 and the membersof the toggles to prevent the toggles from self-loch ing by moving as far as straight or flat position.

Any sus' table carri er of the spreader 27 might be substituted for the hand-screw shaft 17, and the power-multiplying mechanism might be chambered within the shaft, so as to de-v liver its thrust upon the drum without the presence of many of the parts herein described as preferable.

The operation is as follows: When the parts are in the position shown in Fig. 3, the clutch is unset and the drum is substantially free upon the shaft. By moving the handscrew 17 from the position shown in Fig. 3 toward the position shown in Fig. 2 the ad Vance of the head 27 spreads the toggle members 24 and 25 gradually apart, so as to force the drum forward and gradually set the clutch, the thrust of the toggles, in the preferable construction shown, being transmitted to the drumthrough the head 22, the thrustpin 14, and the cross-key 13. The resistance of a clutch to being set increases during the progress of setting, and the power of the thrusting apparatus shown correspondingly increases as the toggles are spread farther apart, wherefore the thrusting apparatus shown isparticularly well adapted for the work to be performed byit. The convexedlyformed surface of the head or spreader 27 is such that it spreads the toggles apart. The angle of its contacting surface with the toggle members may be such (i. 6., with n the angle of repose) as to substantially lock the toggles when the position is reached at which the clutch is completely set and yet reserve further thrusting capacity sufficient to take up the Wear. This condition w, ll eX'st when the said angle is about seven or e ght degrees, at which angle the friction of the spreader against the toggles will prevent its being pushed back. A clearance-space is left between the stops 28 and 29 and the toggles in the set position of the clutch, Fig. 2, to af ford this reserve thrusting capacity, wh'ch clearance-space, however, is not suflicient to permit the toggles to reach a straight pos tion, or even if said angle is greater than the angle of repose. Nevertheless when com bined with the screw 17 the total chain of mechanism will be substant ally self-reposing in all positions. The spreader 27 is swiveled to the end of the screw-shaft 17, so that when the clutch is set the spreader 27 revolves with the shaft and the parts carried by the shaft. Nevertheless this rotation of the spreader 27'produces a minimum of friction between it and the screw-shaft 17 by reason of the fact that in the set position of the clutch the preferable angle of contact between the spreader and the toggle members, being within the angle of repose, is such that the inward pressure of the toggle members may have no substantial tendency to force the spreader 27 in either direction. In relation to the rota tion of the shaft 3 the screw-shaft 17 j' s a relatively non-rotating prime thrust-mover, the pin 14 is a rotating secondary thrust-mover, and the power is multiplied between said thrust-movers by a mechanism which also rotates with the shaft, wherefore the point in the chain of thrust mechanism where contact occurs between the relatively non-rotating and rotating parts is located where the power is umnultiplied and the friction is consequently small.

If the walls of the case 18 are continuous, the chamber 19 may be used as a tight receptacle to be filled with oil, entirely submerging the toggles, the spreader, the ends of the pin 1 and shaft 17, the heads 22 and-23, and the connection between those parts. The escape of the of l backward along the shaft 17 will be prevented by the felt washer 26.

I wish to be understood as having described the best form of the embodiment of my invention, but not as limiting myself to the deta ls of the construction described. Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In combination with a rotating shaft, a

rope-drum and clutch members mounted on said shaft, the following drumthrusting' mechanism for setting said clutch: a cross key 13, a thrust-pin 14, a screwshaft 17, a spreader swiveled to said screw-shaft and toggles operated by said spreader.

2. In combination, the rotating shaft, the clutch members, relatively rotating and nonrotating thrust-movers located in and adj acent to the end of the shaft and a rotating power-multiplying mechanism interposed between said thrust-movers.

3. In combination, the rotating shaft, the

clutch members, relatively rotating and nonrotati'ng thrust-movers in alinement with the shaft and a power-multiplying mechanism interposed between said thrust-movers.

4. In combination, the rotating shaft ,a case mounted upon the end thereof, relatively rotating and non-rotating thrust-movers eX- tend ng into said case and a power-multiplying mechanism carried by said case interposed between said thrust-movers.

5. In combination, the rotating shaft, the case carried thereby, toggle mechanism abutting at one end against said case and at the opposite end against a thrust-mover, said thrust-mover, a stationary frame, a thrustmover mounted upon sa d stationary frame and provided with mechanism for operating said toggle mechanism.

6. In combination, a rotating-shaft, clutch members, relatively rotating and non-rotating thrust-movers and a power-multiplying 'mechanism interposed between said thrustmovers and upon the end of the shaft outside the bearing thereof.

7. A device for transmitting power to the clutch-operating pin of a rotating shaft from a relatively non-rotating actuator which consists of a piece adapted to be fastened to the shaft, a reciprocating member adapted to operate the pin and a toggle adapted to be controlled by said actuator whereby said member is reciprocated relatively to said piece.

8. A device for transmitting power to the clutch-operating pin of a rotating shaft from a relatively non-rotating actuator which consists of a piece adapted to be fastened to the shaft, a member reciprocating on said piece and a power mechanism op'eratively interposed between said piece and member.

9. A device for transmitting power to the clutch-operating pin of a rotating shaft from a relatively non-rotating actuator which consists of a piece adapted to be fastened to the shaft, a reciprocating member adapted to bear on the pin and a power mechanism operatively interposed between said piece and member and adapted to be operated by said actuator.

10. A device for transmitting power to the clutch-operating pin of a rotating shaft from a relatively non-rotating actuator which consists of a piece adapted to be fastened to the shaft, a reciprocating member adapted to smo tively interposed between said piece and said member and means of adjustment.

11. A device for transmitting power to the clutch-operating pin of a rotating shaft from a relatively non-rotating actuator which consists of a piece adapted to be fastened to the shaft, a reciprocating member adapted to operate said pin, a power-transmitting mechanism operatively interposed between said piece and member and means whereby the relative position of said piece and member may be adjusted for a given position of said power mechanism.

12. In combination, a clutch, its shaft, a clutch-operating pin extending into the end of the shaft, a reci rocating member facing the end of said sha 't and bearing against the end ofsaid pin, a power mechanism pivoted to said member, an abutment for said power mechanism fixed to the shaft and an actuator for said mechanism supported independently of the shaft.

13. In combination, a clutch, its shaft, a power mechanism mounted on the end of the shaft, an actuator therefor, an independent support for said actuator and a connection from said power mechanism to said clutch.

14. In combination, a clutch, its shaft, a piece fixed around the end of said shaft, a reciprocating member facing the end of said shaft, a powenmultiplying mechanism bearing on said piece and member and a connection whereby motion is transmitted from said member to the clutch.

15. In combination, a clutch, its shaft, a piece fixed to said shaft around its end, a reciprocating member facing the end of the shaft and having a bearing on said fixed piece, a power-multiplying mechanism operatively interposed between said piece and member and a connection whereby motion is transmitted from said reciprocating member to the clutch.

16. In combination, a clutch, its shaft, a piece fixed to the end of said shaft, a reciproeating member facing the end of the shaft and having a bearing on said fixed piece, a power mechanism bearing on said piece and member and a connection whereby motion is transmitted from said reciprocating member to the clutch.

17. In combination, a clutch, its shaft, a piece fixed to said shaft around its end, a reciprocating member facing the end of said shaft, a power-multiplying mechanism bearing on said piece and member, an operative connection between said member and the clutch and an actuator for said mechanism having stationary bearings.

18. In combination, a clutch, its rotating shaft, a piece and a member rotating with the shaft one of which is fixed to the end of said shaft and the other of which reciprocates facing the end of the shaft, a power mechanism rotating with the shaft and bearing on said piece and member, a connection rotating with the shaft and operatively connecting said member with the clutch and a rela tively non-rotating actuator for said mechanism.

19. The combination with a clutch and its shaft, of a clutch-setting mechanism consist ing of a pin concentric with the shaft, a relatively non-rotating actuator and a rotating power-multiplying mechanism interposed between said actuator and pin.

20. The combination with a clutch and its shaft, of a clutch-setting mechanism, consisting of a pin concentric in the shaft, a piece fixed to theend of the shaft, a rotating power mechanism bearing backward against said piece and forward against said pin and a relatively non-rotating actuator for said powermultiplying mechanism.

21. In combination with a clutch, its shaft, a connection extending beyond the end of the shaft and a relatively non-rotating actuator, of the following parts interposed between said actuator and connection; viz: a

member carried by the shaft with freedom to reciprocate toward and from the end thereof, a power mechanism producing such reciprocations and controlled by said actuator.

22. Incombination with a clutch, its shaft, a connection extending beyond the end of the shaft and a relatively nonrotating actuator, of the following parts interposed between said actuator and connection, viz: a member free to reciprocate toward and from the end of said shaft, a piece fixed to said shaft whereby the reciprocations of said member are guided and a power device producing such reciprocations and controlled by said actuator.

23. In combination with a clutch, its shaft, a connection extending beyond the end of the shaft and a relatively non-rotating actu ator, of the following parts interposed between said actuator a'nd connection, viz: a member reciprocating toward and from the end of said shaft, a piece secured to the shaft and containing an abutment and a power device bearing against said abutment whereby said reciprocations are produced and which is controlled by said actuator.

24. In combination with a clutch, its shaft, a connection extending beyond the end of the shaft and a relatively non-rotating actuator, of the following parts interposed between said actuator and connection, viz: a member reciprocating toward and from the end of said shaft, a powermechanism producing said reciprocations and controlled by said actuator and means of adjustment in the train of mechanism between said actuator and reciprocating member.

25. In combination with a clutch, its shaft, a connection extending beyond the end of the shaft and a relatively non-rotating actu- I tween said actuator and connection, viz: an

annular piece fixed to said shaft to form an extension thereof, a member guided by said piece to reciprocate toward and from the end of said shaft, a power mechanism which bears against said piece and produces said reciprocations under the control of said actuator.

27. In combination, a clutch, its shaft, a clutch-setting connection extending from the clutch beyond the end of the shaft, two oppositely-disposed power devices rotating with the shaft at the end thereof for operating said connection, a relatively non-rotat ing actuator and spreading mechanism through which said actuator operates said power devices.

28. In combination, a clutch, a shaft, a power-multiplying clutch-setting device rotating therewith and extending beyond the end of the shaft and beyond the line of the shaft a spreader extending within the line thereof whereby said device is operated, a relatively non-rotating actuator for said spreader and a connection extending through the shaft from said device to the clutch.

29. In a clutch mechanism the combination of the clutch members, a shaft on which said members are mounted, bearings for the shaft, said clutch members being mounted on'said shaft between said bearings, a clutchactuating mechanism mounted on the shaft outside of said bearings comprising a longitudinally movable member, thrust levers connected thereto, means for actuating said thrust-levers, and devices for communicating the motion of the longitudinally-movable member to the clutch.

30. In combination, a rotating shaft, a clutch thereon, a thrust-pin extending into the shaft, a power-multiplying pin-thrustin g mechanism, a holder for the same exteriorly secured to the shaft, an actuator for said mechanism extending into the end of said holder, and a non-rotating support for said actuator.

31. The combination of a shaft, a drivegear fast thereon, a drum loosely mounted on said shaft and adapted to be shifted into engagement with said drive-gear, a casing at the end of the shaft, a thrust-pin extending from the easing into the drum-shaft, and means within the casing adapted to rotate therewith and to contact with the thrust; pin, said means including a member movable longitudinally within the casing, and a device for actuating said member, said device com prising a screw-shaft extending into the easing from the exterior thereof, and a handwheel for turning said screw-shaft to move the longitudinally-shiftable member into contact with the thrust member.

In testimony whereof I have hereunto signed my name in the presence of two subscribing witnesses.

THOMAS SPENCER MILLER.

Witnesses:

WALTER A. NAULING, J. J. DERRICK.

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