USRE15780E - Jesse ditsoct of littletoh - Google Patents

Description

March 4 1924;

R 15,780 DITSON HQIST 2 Sheets-Sheet 1 Dxfiginal Filed July 20. 1921 INVENTOR lfesfise Difson H S ATTOR March 4 '1924.

J. DlTsoN HOIST 2 Sheets-Sheet 2 Original Filed July 20. 1921 INVENTOR JesSeDatson.

H l5 ATTOR Y Reissued lillar. 4, 1924.

JESSE DITSON, OF LITTLETON, COLORADO,

v Re. 15,780 PATENT OFFICE.

ASSIGNOR TO INGERSOLL-RAND COMPANY,

OF JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY.

HOIST.

Original No. 1,421,183, dated June 27, 1922, Serial N0. 486,097, filed- July 20, 19 21.

reissue filed November 22,

To 117 whom it may) concern Be it known that I, Jessa DirsoN, a citizen of the United States, and a resident of Littlcton, county of Arapahoe, State of Colorado, have invented a certain Hoist, of which the following is a specification, accompanied by drawings.

This invention relates to hoists, but more especially to\ a power driven hoist of the double drunttpe, in which either drum may be driven rom a common driving shaft.

Such hoists are particularly useful for haulage purposes or in connection with 7 other work in which the loadis carried by a continuous rope orcable ada ted to be wound lip-on the haulage or li ting drum 1 as it is unwound from the-tail rope drum.

The objects of the invention are to enable two drums, as for instance a haulage drum and a tail rope drum, to be driven from a common source by improved means and devices which automatically disconnect one drum and connect the other drum to the driving shaft, in accordance with the di rection of rotation of the shaft.

Further objects of the invention are to produce a simple, compact, rugged and highly efficient self-contained hoist combining a source of power and driving and driven elements within and upon one mounting, so constructed that all the operativeparts are readily accessible and easily assembled and disassembled.

Further objects will hereinafter appear, and to all of these ends the invention consists of the hoist described and claimed in this specification and shown in one of its preferred forms in the accompanying drawings, in which- Figure 1 is a side, elevation of the hoist;

Figure 2 is a longitudinal sectional elevation on the line 2-2 of Figure 3;

Figure 3 is a transverse sectional elevation on the line 33 of Figure 2, looking in the direction of the arrows, and Figure 4 is a view similar to Figure 3 with the pawl in a different position.

Referring to the drawings, the base plate A on which the hoist is mounted, is provided with a clamping member preferably 'in the form of a saddle clamp B having the clamping bolts C for se uring the hoist to ,a column, cross bar or other support. Any

l i i 1 Application tor 1923. Serial No. 676,465.

suitable motor may be provided for the hoist, and in this instance a fluid pressure motor is indicated, comprising the cylinder D mounted on the frameE bolted to the base (plate as b means of the bolts F. A cylin er head is secured to the cylinder by the cap bolts H and fluid pressure, as for mstance compressed air, is supplied to the motor through the inlet J controlled by a suitable valve K in the valve chest L and manipulated by the valve lever O. In this instance the motor is assumed to be a reversible motor, the reversal of which is controlled by the valve lever 0. An oiling device P of any suitable type may be applied to the motor. I

A center bearing 'Q'shown in this instance in the form of a shell, having a tubu-' lar body and a flanged portion R, is connected to the motor cylinder D and the cvlinder head G by means of the cap bolts The opposite end of the center bearingis supported in the gear box- S, which is secured to the frame A by the bolts T. A center bearing retaining screw U suitably secures the center bearing to the inner wall V of the'gear box S. An oiling connection W. may be provided u on the gear box. The gearbox cover is secured to the gear box by means of the bolts Y. The construction of the motor and frame so far described forms a simple and compact frame for the hoist, easily assembled and disassembled and permitting ready accessibility to the operative parts of the hoist;

A main driving shaft a passingcentrally through the center bearing Q is supported in the ball bearings 'b and c and provided with the crank disc at having the crank pin e connected. to the piston f of the motor by means of the ball bearing g, so that the driving shaft a operates throughout in ball bearings.

A driving pinion k is keyed to the driving shaft (1 and a retaining washer j is held against the driving pinion by means of the pin is. The driving pinion h meshes with an intermediate gear 0 keyed to the countershaft 7) operating in the ball bearings 1 bearing Q, from which power is taken for driving either one of the two drums.

The haulage drum '0 to which one length of the rope w is adapted to be connected, rotates upon the center bearing Q and the concentric tail'rope drum a: to which the tail rope 1 is connected preferably rotates upon t e liaulage drum as indicated par- Figure 2. Such construction of concentric drums materially reduces the" over-all length of the hoist and produces a on the opposed drivers either one more compact and than heretofore.

Means ,are provided for automatically connecting the main driver u to one or the other of the drums v and w in accordance with the direction of rotation of the driving shaft a, and for this purpose the haulage drum '0 isprovided with a driver a preferably in the form of a ring having clutch members in the form of teeth 2 merging into cam surfaces 3. The driver 2 is suitably secured to the haulage drum by means of the bolts 4, and for convenience of description may be termed the inner driver.

The tail rope drum .2: is likewise rovided with a driver 5 opposed to the driver z and preferably in the form of a ring having clutch members in the form of teeth 6 facing in the opposite direction from the teeth 2 on the drlver z and merging into thecam surfaces 7. The driver 5 15 secured to better balanced hoist the tail rope drum m by means of the bolts 8, and for convenience of description may be termed the outer driver.

The spaced teeth 2 and 6 of each series preferably extend radially or in the plane of the respective driver on which they are formed.

The terms inner and outer as ap lied to the opposed drivers 2 and 5 carried by the drums respectively, are not to be understood as necessarily limited to ratchet rings concentric with the axis of rotation of the machine, but are intended to be 'used as suitable designations for two opposed ratchet faces for the drums, having reference to some fixed oint of the machine, which obviously need not be the driving shaft.

.The main driver u is provided with a movable clutch member 9, referably in the form of a awl, guided sole y upon the main driver an shown as slidable substantially radially between the lugs 10 projecting inwardly from the main driver u into a position between the inner driver z and outer driver 5, so that the pawl 9 may engage of the inner or outer drivers as indicated in Figures 3 and 4, in accordance with the direction of rotation of the driving shaft a.

The pawl 9 as shown, is separate from but carried wholly by the main driver u and is mounted on the body portion of the main driver at a point remote, or at a substantial In the operation of the hoist, if it be assumed that the driving shaft a is rotated in the direction of the arrow 11 in 'Fi ure 3, the main driver u will be rotated y the train of direction, and the pawl 9 will have been ushed by one of the cam surfaces 3 on the' inner driver z into enga ement with one of the teeth 6 of the outer river 5, thus driving the tail rope drum m in the same direction as the main driver but in the 0' posite direction to the rotation of the driving shaft a. The arrow 12 in Figure 1 on the tail rope drum :0 indicates the direction'of rotation of said drum under such circumstances when power'is' ap lied to the drum to he haula e drum '0 wind up the tail rope.

driving 8 aft a but is disconnected from the is freely rotated in the same direction as the the rope tail rope drum m as from .said haulage drum.

Ulpon reversing the directionof rotation of t e drivin shaft or and causing it to rotate'in the direction of the arrow 13 in Figure 4, the direction of rotation'of the is unwinding main driver u will be reversed and the awl One drum or the other will be automatically connected to be driven from the driving,

the direction of rotlition shaft as often as of the driving shaft is reversed. In a hoist of the character described, a brake is preferably provided for oneof the drums, it being unnecessary to provide a brake for both e drum will be rotated freely in the the haulage drum r in the Ill drums in accordance with my construction.

In this instance, the tail rope drum :0 may be conveniently provided with a flan e 1a to which a brake band 15 having a suitable lining 16 'is applied. A brake lever 17 is fulcrumed at 18 on the lugs 19 and one looped end 20 of the brake band is connected to a pin 21 on the brake lever 17 located further away from the fulcrum 18 than the pin 22 to which the other looped end 23 of the brake band is connected. A compression spring 24 beneath thev shorter arm 25 of the brake lever compressed between an adjustin and the frame A. A set screw 2 screw 26 holds the 75 gearing described, in the opposite y It is obvious also that, owing to the posi-.

tions of the ins 21 and 22 relative to the brake lever fiilcrum 18, the brake will be automatically ti htened by friction between the flange 14 o the tail rope drum :0 and the brake lining 16 in case the drums should accidentally tend to rotate backwardly in the opposite direction from that in which power applied. The brake therefore, acts as an automatic safety device.

I ain not to be understood as limiting the invention to the particular devices'and constructions shown in the drawings, and (ic T scribed in the specification, since those skilled in the art may devise equivalent construction within the spirit of my invention as defined in the appended claims.

I claim: f

1. In a hoist, the combination of a frame, a driving shaft, two drums rotatable relatively to the driving shaft, a' motor connected to o erate the driving shaft, and means inclu ing a movable pawl mounted remote from the driving shaft between portions of the drums, for automatically disconnecting one drum and connecting the other drum to the driving shaft in accordance with the direction of rotation of the driving shaft.

2. In a hoist, the combination of a frame, a driving shaft, two drums rotatable rela-. tively to the driving shaft, :1. motor connect ed to operate the driving shaft, opposed drivers carried by said drums respectively, a main driver connected to be rotated by the driving shaft, and means including a movable member carried wholly by the main driver for automatically connectin said main driver to one or the other of t e said opposed drivers in accordance with the direction of rotation of the driving shaft.

3. In a hoist, the combination of a frame, a drivin shaft, two drums concentric with the driving shaft, a motor connected to opcrate the drivirm shaft, opposed drivers carried by said diums respectively, a main driver rotated by the driving shaft, and a movable member carried by and guided solely upon the main driver for automatically connecting said main driver to oneor the other of the said opposed drivers in accordance with the direction 'of rotation of the driving shaft.

4. In a hoist, the combination of a frame,

a a driving shaft, two drums concentric with the driving shaft, a motor connected to operate the driving shaft, opposed drivers carried by said drums respectively, a mam driver rotated by the driving shaft, and a pawl carried wholly by the. main driver for automatically connectln said main driver to one or the other 0 the said opposed drivers in accordance with the direction of rotation of the driving shaft.

5. In a hoist, the combination of a frame, a driving shaft, two drums concentric with the driving shaft, one drum being rotatable upon the other drum, a motor connected to operate the driving shaft, inner and outer concentric drivers carried by the said drums respectively, a main driver rotated by the.

driving shaft, a movable member carried by the main driver and" located between the inner and outer drivers, and means for auto matically actuating said movable member to connect the main driver to one or the other of the inner and outer drivers in accordance with the direction of rotation of the driving shaft. I j

6. In a hoist, the combination of a frame, a driving shaft, two drums concentric with the driving shaft, one drum being rotatable upon the other drum, a motor connected to operate the driving shaft, inner and outer concentric drivers carried by the said drums respectively, a main driver rotated by the driving shaft, a pawl carried by the main driver and located between the'inner and outer drivers, and means for automatically actuating said pawl to connect the main driver to one or the other of the inner and outer drivers in accordance with the direction of rotation of the driving shaft,

7. In a hoist, the combination of a frame, a drii'ing'shaft, two drums rotatable relatively to the driving shaft, 2. motor connected to operate the driving shaft, means including a movable awl mounted remote from the driving sha between portions of the drums, for automatically disconnecting one drum and connecting the other drum to the driving shaft in accordance with the direction of rotation of the driving shaft, and a brake for one of said drums.

8. In a hoist, the combination of a frame, a driving shaft, two drums concentric with the driving shaft, a motor connected to operate the driving shaft, opposed driverscarried by said drums respectively, .a main driver rotated by the driving shaft and means including a movable member carried by and guided solely upon the main driver for automatically connectin said main driver to one or the other 0 the said opposediftlrivers in accordance with the direction of rotation of the driving shaft, and a brake for one of said drums. I

9. In a hoist, the combination of a frame, a driving shaft, two drums concentric with the driving shaft, a motor connected to operate the driving shaft, opposed drivers carried by said drums respectively, a main driver rotated by the driving shaft, means for automatically connecting said main driver to one or the other of the said opposed drivers in accordance with the direction of rotation of the driving shaft, and a brake for one of the drums adapted to automatically tighten and retard rotation in a dirsi' tion counter to power applied by the driving shaft to said drum.

10. In a hoist, the combination of a frame, a driving shaft, a motor connected to 0perate the driving shaft, a haula drum and a tail rope drum concentric wit the driving shaft, the tail rope drum being mounted to rotate upon the haulage drum, 8- driver carried by the haula e drum, an opposed driver carried by the tai rope drum, a main driver rotated by the driving shaft, a movable member carried by said main driver between the said op osed drum drivers,'and means automatically actuating said movable member to connect the main driver to one or the other of the said opposed drivers in accordance with the direction of rotation of the driving shaft.

11. In a hoist, the combination of a frame, a driving shaft, a motor connected to operate the driving shaft, a haulage drum, and

a tail rope drum concentric with the driving shaft, the tail rope drum being mounted to rotate upon the haulage drum, a driver carried by the haulage drum, an opposeddriver carried by the tail rope drum, a main driver rotated by the driving shaft, a movable member carried by said main driver between the said opposed drum drivers, means automatically actuating said movable member to connect the main driver to one or the other of the said opposed drivers in accordance with the direction of rotation of the driving shaft, and a brake for one of said drums.

12. In a hoist, the combination of a frame, a drivin shaft, a motor connected to operate t e driving shaft, two concentric drums, an inner driver on one drum in the form of a ring having external teeth, an outer driver on the other drum in the form of a concentric ring havin internal teeth, a main driver rotated by t e driving shaft, ..nd a radially movable awl carried by said main driver and adapted to engage the teeth of the inner or outer driver in accordance with the direction of rotation of the driving shaft.

13. In a hoist, thecombination of a frame, a drivin shaft, a motor connected to operate tie driving shaft, two concentric drums, an inner driver on one drum in the form of a ring having external teeth merging into cam surfaces, and an outer driver on the other drum in the form of a concentric ring having internal teeth facing oppositely to the teeth on the inner driver and merging into cam surfaces, a main driver rotated by the drivin shaft, and a radially movable pawl carrie by said main driver and actuated by said cam surfaces on the inner and outer drivers into engagement with the teeth on one or the other of said drivers in accordance with the direction of rotation of the driving shaft. 14. In a hoist, the combination of a frame, a driving shaft, a motor connected to operate the driving shaft, a haulage drum and a tail rope drum concentric with the driving shaft, the tail rope drum being mounted to rotate upon the haulage drum, an inner driver in the form of a ring on the haulage drum having external teeth, an outer driver on the tail rope drum in the form of a concentric ring having internal teeth, a main driver rotated by the drivin shaft, and a radially movable pawl carried driver and adapted to engage the teeth of the inner or outer driver in accordance with the direction of rotation of the driving shaft.

15. In a hoist, the combination of a frame, a driving shaft, a motor connected to operate the driving shaft, a haulage drum and a tail rope drum concentric with the driving shaft, the tail rope drum being mounted to rotate upon the haulage drum, an inner driver in the form of a ring on the haulage drum having external teeth merging into by said main cam surfaces, an outer driver on the tail rope drum in the form of a concentric ring having internal teeth facing oppositely to the teeth on the inner driver and merging into cam surfaces, a main driver rotated by the driving shaft, and a radially movable pawl carried by said main driver and actuated by said- .c am surfaces on the inner and outer drivers into enga ement with the teeth on one or the other 0 said drivers in accordance with the direction of rotation of the driving shaft,

16. In a hoist, the combination of a frame, a driving shaft, two drums rotatable rela tively to the driving shaft, a motor connected to operate the driving shaft, opposed drivers carried by said drums respectively, a main driver-connected to be rotated by the driving shaft in fixed longitudinal relationship'to the drums, and a pawl carried wholly by the main driver remote from the,

driving shaft for automatically connecting said main driver to one or the other of the said opposed drivers in accordance with the direction of rotation of the driving. shaft.

17. In a hoist, the combination of a frame, a driving shaft, two drums adapted to be driven alternately from the driving shaft,

a motor connected to operate the driving shaft, and main driving means for the drums, having a bod portion connected to be rotated by the (fiiving shaft in fixed lon itudiral relationship to the drums and inc uding a separate drum connecting means carried wholly by the said body ortion at a substantial distance in a radiaPd-irection from the driving shaft but automatically loo I adjustable relatively to both the'body portion of the main driving means and to. the drums, for automatically connecting the said driving means to one or the other of the drums in accordance with the direction of rotation of the driving shaft.

18. In a hoist, the combination of a frame, a drivin shaft, two drums adapted to be driven a ternately fromthe driving shaft, a motor connected to operate the driving shaft, opposed drivers for the drums respectively, a main driver for the drums, means connecting said main driver to be rotated by the driving shaft in fixed longitudinal relationship to the drums, and a se arate drum connecting member carried who ly by the main driver at a substantial distance in a radial direction from the driving shaft but movable relatively to both the main driver and to the opposed drum drivers, for automatically connecting the main driver to one or the other of the o posed drivers in accordance with the direction of rotation of the drivin shaft.

19. In a oist, the combination of aframe, a driving shaft, two drums adapted to be driven alternatel from the driving shaft, a motor connect to operate the driving shaft, opposed drivers for the drums respectively, a main driver for the drums, means connecting said main driver to be rotated by the driving shaft in fixed longitudinal relationship to the drums, and a pawl sep arate from but carried wholly-by the main driver at a substantial distance in a radial direction from the driving shaft and movable relatively to both the main driver and to the opposed drum drivers, for automatically connecting the main driver to one or the other of the opposed drivers in accordance with the direction'of rotation of the driving shaft.

20. In a hoist, the combination of a frame, a driving shaft, twodrums adapted to be driven alternatel from the driving shaft, a motor connects to operate the driving shaft, opposed drivers for the drums respectively, each having series of spaced teeth formed with oppositely inclined faces, a main driver for the drums interposed between the drum drivers and connected to be rotated b' the driving shaft, and a pawl carried wholly by the main driver and having a clutch tooth at each end, said clutch teeth being adapted to alternately engage one tooth of the series of teeth of the oposed drum drivers and being adapted to lie actuatedby the inclined faces of .the said series of teeth on the drumdrivers, to effect the shifting of the pawl from engagement with one tooth of one drum driver to one tooth of; the other drum driver.

I and rings havin 21. In a hoist, the combination of a reversible motor, a hollow center bearing extendin therefrom, a main shaft within the center caring, 'a main driver on the exterior of the center bearing geared to the main shaft, drums rotatably mounted relatively to the hollow center bearing, and a clutch member on the main driver adapted to connect either drum to the said main driver.

22. In a hoist, the combination of a reversible motor, a hollow center bearing extendin therefrom, a main shaft within the center aring, a main driver on the exterior of the center bearing geared to the main shaft, a drum loosely journaled on the center bearing, another drum rotatable relatively to the center bearin axis as the first drum, toot ed rings .on adjacent ends of the drums,

and a shiftable pzwl carried by the main driver and located tween the said toothed rings, said pawl means for automatically shifting the paw from the teeth of one ring to the teeth of the other, and vice versa accordin 1y as the main river is reversed.

23. In a hoist,- the combination of a frame, a driving shaft, two drums rotatable rela-' tively to the; driving shaft, a motor connected to o crate the driving shaft, 0 posed drivers or the drums in t e form 0 rin each having series of oppositely facing teet the teeth of, each series extending in the plane of the respective driver on which they are formed, a main driver connected to be rotated by the drivin shaft, and a movable member carried whofiy by the main driver and adapted to cooperate alternately with the teeth of the opposed drivers for automatically connectingx said main driver to one or the other of t e said opposed drivers in accordance with the direction of rotation of thedriving shaft.

24. In a hoist, the combination ofaframe, a driving shaft, two drums rotatable relatively to the driving shaft, a motor connected to operate the riving shaft,-opposed drivers for the drums each having series 0 JESSE DITSON.

about the same direction of rotation of the i no oppositely facing radially extending teeth,

drivers in ac-

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