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Publication numberUS1062723 A
Publication typeGrant
Publication dateMay 27, 1913
Filing dateJul 30, 1910
Priority dateJan 22, 1910
Publication numberUS 1062723 A, US 1062723A, US-A-1062723, US1062723 A, US1062723A
InventorsThomas Spencer Miller
Original AssigneeThomas Spencer Miller
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Rope-drum.
US 1062723 A
Abstract  available in
Images(3)
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Claims  available in
Description  (OCR text may contain errors)

T. S. MILLER.

ROPE mum.

APPLIOATIOH FILED JULYSD, 1910. 1,062,723. Patented May 27, 1913.

3 SHEETS-SHEET 1.

T. S. MILLER.

ROPE DRUM.

APPLICATION EILED JULY 30, 1910.

1 062 723. Patented May 27, 1913. 3 BHEETSSHEET 2.

T. S. MILLER.

ROPE DRUM.

APPLICATION FILED JULY 30, 1910.

Patented May 27, 1913.

8 SHEETS-SHEET 3.

UNITED sTA s PATENT OFFICE...

'rrromis SPENCER MILLER, or SOUTH cannon, NEW'JERSEY.

ROPE-DRUM.

Patented May 27,1913.

Original application filed January 22, 1910, Serial ital-539,513. Divided. and this application filed July so,

1910. Serial No. 574,703.

To all whom, it may concern: I

Be it known that I, THOMZAS Srnncnx.

MILLER, a citizen of the United States, rcsiding at South Oran e, in the county of Essex and State of ew Jersey, haveinvented certain new and useful Improvements in Rope-Drums, of which the followin is a specification.

y invention relates to new and useful improvements in rope drums, and the ob ject is to provide a rope drum with an automatic .governor for of its prime mover, sai governor being controlled by the load on the drum.

This application is a division of my rior application Serial No. 539,513, J lin a-ry22, 1910.

The invention consists in the novel construction and arrangement of dparts in oper- 'ofreference, 1 designates the prime mover which, in this instance, consists of a horizontally disposed shaft mountedin suitable bearings 2, 2 formed in the side members 3,

3 of the frame for the rope drum. This shaft may be driven by any source of power, but in the embodiments s own and hereinafter described, I have employed, double cylinder steam engine, but I wish it understood that I do not desire to be limited to any particular form of motor, as I may use any source of power which will accom lish the r'esults desired. The cylinders o the engine are shown at4, 4, the pistons (not shown) operating in said cylinders being connected to the driving shaft or prime mover by pitmen not shown by cranks 6, 6 on said shaft. These engine cylindersare of an ordinary type having the usual valve (governing the 'power chests 4", 4", containing side valves operated from eccentrics 4 4", on the shaft 1, by' rod connections (not shown).

Mounted on' a shaft 1 is a drum 7, said drum being arranged so as to be capable of frevolution independently of the shaft, but held against movement longitudinally of the same: In other words, the drum may turn independentlylof the shaft but revolves in a fixed path on or with said shaft. The drum is. connected to the shaft by means of heliand having their ends connected to thcdrum and shaft respectively, the arrangement being such that the springs will permit an increase of load on the drum above normal, due to the pull of the rope thereon, to cause 'the drum to revolve on the shaft independently thereon; and these springs will operate to turn the ,drum on the shaft, if, for any reason, the load thereon should decrease below normal. In other words, the connection between the drum and the shaft permitting the relative movement between the drum and shaft, acts in the. nature of .what I may term a detector, for the u ose of ascertaining any variations of lba which the drum maybe subjected by the pull of the cable wound thereon. g

I will now proceed to describe what I may term governing means acting in accordance with the variations of load as ascertained by said detector, which governor in turn controls the valve mechanism of the engine cylinders or the control ofsuch other power as may be employed in such a manner that the steam or other motive fluid admitted thereto is automatically increased when the load upon the drum decreases, and is automatically reduced when the load on the drum is increased, the result being that the drum automatically responds promptly to all variations of load thereonincident to the pull of the cable. I will now proceed to describe this governing mechanism: On the crank shaft or prime mover to one side of the.

to revolve independently thereof. Cooperatcal coilsprings 8, arranged within the drum,

respect to the shaft under changes of load,

the screw-threaded connection between the drum and sleeve 9 will serve to move the latter in one direction or the other on the shaft according to the direction of rotation of the drum. This screw-threaded sleeve carries a grooved collar 11 which engages the forked end. of a lever 12 rigidly connected to one end of a connecting rod which extends longitudinally of the frame in a plane beneath the prime mover or crank shaft, the opposite end'of said rod from that carrying the lever 12 terminating adjacent the engine cylinders. On the end of the connecting rod adjacent the cylinders is a lever 14 which cotiperates with a vertically disposed valve rod 15 for operating the regulating valve for controlling the flow of steam to and from the valve chests of the engine cylinders in accordance with the variations of load on the drum.

I will now proceed to describe the construotion of the said regulating valve for controlling flow of fluid to the motor in case a fluid pressure engine is employed: The regulating valve comprises a vertical. casing into which steam from a suitable source enters by way of an inlet 16 into a steam chest 17, and in which steam chest :1 manually-operated D valve operates, said valve slidably coiiperating with a port wall 18 separating the valve chest from the main body of the valve casing, said port wall having ports 19, 70 and 69 establishing communication between chambers in the main body of the casing. The port 19 is arranged to connect the valve chest 17, by way of the,

body of the valve casing, with the slide valve chambers of the piston cylinders to admit steam thereto, the port 7 O connects the chest 17, through the main body of the easing, with the exhaust ducts leading from the cylinders, and the port 69 connects said chest 17 with the main exhaust fromthe regulating valve casing. When the valve 18 is moved down from the position shown in Fig. 3, to uncover the port 19, steam .is admitted from the chest 17 to the ports 17 in the regulating valve casing leading to the valve chests. of the engine cylinders, it being understood that the vertically reciprocating valve 20 in the main body of the casing is first raised from its seat 21 in a partition 21 inthe main casing separating said ports from the port 19. The ports 17are connected to the valve chests of the cylinders by conduits 17", see Fig. 1. The exhaust from the cylinders passes therefrom by way of pipes 22 and enters the main casing through the openings 22 in opposite sides ofthe main casing wall below a horizontal partition 22 which separates the casing into upper and lower chambers 22, 22 respectively, the openings 22 opening into thechamber 22 and the exhaust flowing from said openings through the chamber 22 and ports .70 and 69 to the main exhaust 7101? the valve casing. This is the operation taking place When the engine is running forward to wind the rope on the drum.

In Fig. 3 the \D valve is shown in neutral position so as to cut oil all communication between the engine cylinders and both the inlet 16 and exhaust 71 of the regulating valve casing. V

The mairi'valve 20 is slidably disposed in a guide sleeve 20 surrounding an opening in the partition 22, and said valve rests by gravity on a secondary or piston valve 23 which is connected to a vertically movable rod 15. When the rod 15- is lowered, the

valve 23 is moved dowmaway from the bottom of the valve 20, the latter being supported on the partition 21, so that a space is provided between the lower edge of said valve 20 and the top .of the valve 23 whereby communication is established between the main exhaust of the valve casing and the ducts 22 leading to the engine cylinders through a passage 20" extending through the main valve. With the partsin this position it will be seen that the supply of steam to the engine cylinders is cut ofi and said cylinders are connected with the exhaust of the valve so that the drum may payoff the rope wvithout resistance of steam cushioned in the The valve 23 is guided engine cylinders. in a guide 23 cast in the main valve casing and around which the exhaust port 71 passes.

While in Fig. 3 only one of the pdrts 17, and 22, is shown, yet it will be'understood that there are two of each of said ports, ar-.

ranged respectively on opposite sides of the casing as is evident from Fig. 1.

The lower end-of the valve stem or rod which carries the secondary valve is provided with a screw-thread 24, and on this operates a threaded sleeve or nut 25, the upper end of which is provided with a groove engaged by the forked lever 26 on the endof the connecting rod 13 operated by the traveling nut on the prime mover or crank shaft, the arrangement being such that the movements of said forked lever will operate to raise and lower the secondary valve. The lower end of this threaded sleeve 25 on the valve stem 15 is provided with gear teeth 27, which mesh with a gear 28 on a vertical shaft 29 journaled in the frame and upon the upper end of which is a handwheel (not shown) for manual operation of the valve. When this shaft 29 is turned the nut isrotated on the valve stem and moves the stem-15 up or down, thus seating or unseating the main regulating valve 20, said hand operation being independent of the automatic operation which is as follows: If the engine is stationa and the drum subjected to a normal 10a the valve 20' is seated or may be open just enough to admit steam to compensate for condensation losses and if an increase should occur in the load the drum will revolve on its shaft and thereby move the threaded sleeve on the shaft to move the valve stem down, which will permit the valve 20 to seat and the valve 23 to move away from the valve 20 to uncover the passage through the latter and establish communic'ationbetween the cylinders and the main exhaust which will reduce the pressure in the engine cylinders, thus rmitting the drum to rotate to let out tii: rope. wound thereon and thereby reduce the load on the drum. As soon as the load becomes .normal the drum throu h the springs will react and the valve 23 Wlll be raised into contact with the valve 4, thus closing communication between cylinders and the main exhaust.

If a decrease in load should occur on the drum the springs 8 will operate to revolve the'drum to take up the rope and the valve stem 15 will be raised and the valve 20 unseated admitting more steam into the cylinders so that the engine will run forward to take up the rope .until the load on thedrum becomes normal when the valve seats to hold the steam in the cylinders to cushion the pistons and thereby hold the drum.

What I claim and desire to secure by Letters Patent of the United States is:

1. In combination, a driving shaft, controlling means therefor, a drum on the shaft, an element movable longitudinally of' the 1 shaft, an element rotatable on the shaft, said elements being in threaded engagement with each other, and one being rotatable by the drum to cause said elements to move relative to each other, and means acting in accordance with such relative movement for operating the controlling means for the shaft.

2. In combination, a driving shaft, controlling means therefor, a drum on the shaft, means connecting the drum and shaft permitting relative movement between the same due to changes of load on the drum, an element movable lon 'tudinally of the shaft, an element rotatab e on the shaft, said elements being in threaded engagement with each other, and one being rotatable by the a drum to cause said elements to move relative to each other, and means acting in accordance with such relative movement for operating the controlling means for the shaft.

3. In combination, a driving shaft, controlling means therefor, a drum on the shaft,

' spring connecting the drum and shaft permitting a relative movement between said elements due to changes of load on the drum, an element movable longitudinally of the shaft, an element rotatable on the shaft, said elements being in threaded engagement with each other, and one being rotatable by the drum to cause said elements to move relative to each other, and means acting in accordance with such relative movement for 0 erating the controlling means for the shaf 4c. In combination, a driving shaft, controlling means therefor, a drum on the shaft, an element movable longitudinally of the shaft and threaded to the drum, and means acting in accordance with the movement of said element for operating the controlling means for the shaft.

5. In combination, a driving shaft, controlling means therefor, a drum on the shaft, a spring connecting the drum and shaft, permitting relative movement between the same, due to changes of load on the drum, an element movable longitudinally of the shaft and having a cam incline engagement with the drum whereby it is moved by the drum, and means acting in accordance with the movement of said element for operating the controlling means for the shaft.

6. In combination, a driving shaft, controlling means therefor, a drum on the shaft, a'spring connecting the drum and shaft, permitting relative movement between the same, due to changes of load on the drum, an element movable longitudinally of the shaft, a connection between the drum and element to move the latter longitudinally of the shaft, and means acting in accordance with said movement for operating the controlling means for the shaft.

7. In combination, a driving shaft, controlling means therefor, a drum driven by the shaft, an element movable longitudinally of the shaft, an element turned by the drum and threaded to said longitudinally movable element, and means acting in accordance with said last-named element for operating and means acting in accordance with such relative movement for operating the" controlling means for the driving member.

9. In combination, a driving shaft, a controller therefor, a drum driven by the shaft, a yielding connection forming the driving connection between the drum and shaft, an element movable longitudinally of the shaft,

a controller.

"element moves the other element longitudi- Correction in Letters Patent No. 1,062,723.

a rotatable element rotated by the drum,

signed my name in the presence of two submeans whereby the rotation of the rotatable scribing witnesses.

THOMAS SPENCER MILLER.

Witnesses:

ERNST PULsFoRn, LOUIS G. RUeeLns.

nally of the shaft, and a connection between the longitudinally movable element and the In-testimony whereof I have hereunto It is hereby certified that in Letters Patent No. 1,062,723, granted May 27, 1913, 1 upon the application of Thomas Spencer Miller, of South Orange; New Jersey, for an improvement in Rope-Drums, 'an error appears in the printed specification requiring correction as follows: Page 1, line 53, for the word side read slide; and that the said Letters Patent should be read with this correction'therein that the same may conform to the record of the ease in the Patent Office.

' Signed and sealed this 24th day of June, A. D., 1913.

[sun] C. C, BILLINGS,

Acting Omnmissioner of Patents.

a controller.

"element moves the other element longitudi- Correction in Letters Patent No. 1,062,723.

a rotatable element rotated by the drum,

signed my name in the presence of two submeans whereby the rotation of the rotatable scribing witnesses.

THOMAS SPENCER MILLER.

Witnesses:

ERNST PULsFoRn, LOUIS G. RUeeLns.

nally of the shaft, and a connection between the longitudinally movable element and the In-testimony whereof I have hereunto It is hereby certified that in Letters Patent No. 1,062,723, granted May 27, 1913, 1 upon the application of Thomas Spencer Miller, of South Orange; New Jersey, for an improvement in Rope-Drums, 'an error appears in the printed specification requiring correction as follows: Page 1, line 53, for the word side read slide; and that the said Letters Patent should be read with this correction'therein that the same may conform to the record of the ease in the Patent Office.

' Signed and sealed this 24th day of June, A. D., 1913.

[sun] C. C, BILLINGS,

Acting Omnmissioner of Patents.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4406420 *Jun 5, 1981Sep 27, 1983Allied CorporationSliding door actuating mechanism
Classifications
U.S. Classification254/274, 254/364, 254/360
Cooperative ClassificationB66D1/48