US1039733A - Hoisting apparatus. - Google Patents

Description

J. W. HAMMOND & J. P. DONAHUE.

HOISTING APPARATUS.

APPLICATION FILED 111111.24, 1911.

1,039,733. i Patented 6013.1,1912.

3 SHEETS-SHEET l.

Izivenio ms Johu WHammond JosephFDonahue,

HAMMOND 6; J: F. DONAHUE.

HOISTING APPARATUS.

* APPLIGATIGN FILED 141111.24, 1911.

Fatented 001;. 1, 1912.

3 SHEETSSHEET 2,

imllllllllflm ililllHFH J. W, HAMMOND & J, P. DONAHUE.

HOISTING APPARATUS. APPLICATION FILED MAR.24,1911.

CHUSETTS, SETTS, A CORPORATION Q33 IVIAINE.

EAL'HKOND, OF TAUNTON, AN'D JOSE DGNAHUE, Oi BOSTON, MASSA- EZOISTING AEPARATUQL "lion filed November Specification of Letters Patent.

3.96?, Serial No. 481,264. Divided and application filed 24, 1911. Serial No. 818,699.

clinch/om. 1 1i concern;

it known that we, cor-r21 W. I antaronn and Jest-ten l Donation, both citizens of the United States, and residents of Zlaunton, county Bristol, and Boston, county of Suffolk, resoectively, State of IJassachusetts, (whose post-otiice addresses are Taunton, lilassachueetts, and care of Mead Morrison- Mfg, Co, Gambridge A, Boston, Massachusetts,respectively) have invented an Inoproveinent in Ho ting Apparatus, of which the followingdescription, in connection with the accompanying drawings, is specification, like letters on he drawings representing like parts.

The present invention relates to a; hoisting apparatus and is embodied in an apparatus or" the kind connnonly used in hoisting or transferring coal, in which the position of a bucket is controlled by trolley longitudinally movable upon a boom, combined with seg-mratcmeans for raising and lowering the bucket and opening closing the same. in hoisting apparatus of this class, tWo separate engines are commonly employed, one-to control the operation of lowering and hoisting the bucket and opening and closing the same, and the other to control the movement 05 the trolley alongthe boom to position the bucket, it being common practice toopcrate the two engines separately, and to employ an attendant totake charge of each en ine;

in the operation of the hoisting apparatus, the trolley engine is first operated to haul the trolley and bucket suspended therein to the proper position, after which the trolley engine is stopped and the trolley held y setting a suitable brake. The hoisting then set free to lower the bucket which is opened and closed by suitable inaions of the apparatus operated by the In 1 hoisting engine, after which the said hoisting engine is put in operation to raise the bucket, the trolley brake then being released to permit the trolley to run back and bring the bucket into proper position for dumping the load. This operation of the trolley engine is commonly performed by releasing the brake and also a clutch which ollcy cable-d um from the eni: the trolley to run on of gravity.

It is the purpose of the present invention. Fto arrange the trolley engine and its operating devices so that they may be under the control of the operator of the hoisting engine, and also to simplify the control so that the hoisting engine operator will not have ,any material amount of extra work. To this end, the clutch commonly emploved Pin connection with the trolley engine is dis- }pensed with and the engine itself is allowed fto reverse in the return movement of the trolley by employing a relief valve which ,allows' the steam trapped in the engine cylginders to escape or fgine will reverse freely when the relief valve flS open. The trolley engine is also provided with an automatic brake which may be operated by steam pressure, so that the brake ;and relief valve may be operated by a comfmon actuating device. The trolley engine throttle may be controlled by a foot treadle Ewhich is also arranged to operate on the relief valve to close the same when the engine is to be operated, so that the hoisting engine operator, in order to control the trolt ley engine likewise, has only one additional foot; lever to take care of and one actuating :device which can be connected with and {operated in common with one of the levers employed in the control of the hoisting engine. The control of the entire hoisting operation, by these expedients, acconn iplished by means of two trcadles which are Falso operated separately, two handle levers which are the same as those now employed in the control of the hoisting engine alone, and a single manual actuating device which may conveniently be arranged in the shape of a grip handle connected with one of said levers.

Figure l is a perspective view showing in diagram an apparatus embodying the invention: Fig. 2 is a vertical sectional detail for the purpose of illustrating more clearly the specific construction and arrangement of the controlling devices: Fig. 3 is a general side elevation of the complete apparatus, with parts shown in section; and Fig. t. is a detail showing the hoisting drum.

The main hoisting apparatus consists of drums A and A? which are loosely mounted on a shaft g'novidetl with a gear A through which it is driven from the. main hoisting exhaust, so that the 'en-.

engine A. These drums are provided, respectively, with clutch surfaces A and A, so that they can be caused to ro ate with the shaft, or release therefrom, the clutches being operated through levers C and D which are under the control of the operator, each of the drums is provided with a rope leading A connected by a rope A with a treadle B.

In the construction shown, the levers C and D are connected through links C and D with rocker members C and D which, in turn, are connected with the clutch-operating mechanism.

The trolley G which positions the bucket prior to the hoisting operation, and then transfers the bucket to the dumping point is mounted on the trolley boom G and is under the control of the trolley engine E, t e

present invention relating mainly to the devices by which the said trolley engine is caused to perform its functions at the proper time. Starting with the bucket empty, the first step in the operation consists in operat ing the trolle engine to haul the trolley to the position trom which the bucket is to be lowered. This is accomplished by starting the trolley engine so 'as to produce a rotation of the winding drum 1? and wind in the trolley cable E. The starting of the trolley engine is produced by pressing a treadle a shown as connected by means of a cable a running over sheaves a with a weighted lever 6 connected with a throttle valve Z) which controls the admission of steam to the engine E.

NVhen the trolley has been hauled out of the proper position the engine 11 is stopped by releasing the treadle a, the throttle valve lever 6 being provided with a weight 6 whereby the throttle is closed automatically when the treadle is released. This stops the operation of the engine E and in order to hold the trolley, the drum E is provided with a brake which is herein shown as a hand brake l arranged to be operated automatically by means under the control'of the hoisting engine operator. This brake is nor mally set, but is arranged-to be released. during the operation of the engine It by means of an actuating device which is herein shown as a grip lever a connected with the lever C which controls the initial operation of the hoisting engine. The brake E may cenveniently be operated by steam pressure, the brake. band being herein shown as; connected weaves by means of a cable a running over a sheave a, with the rod 6 of a piston a o crating in a cylinder 0. Steam. is admitte to said cylinder through the pipe f under the control of a valve which consists of a slide member glongitudinally movable in a steam chest 9 having a steaminlet duct 9 and exhaust duct g. The slide valve g is shown as in the form of a longitudinally movable plunger having a rod g projecting through a stud ing box in the end of the steam chest and acted upon by a. spring 9 which tends to hold it in the position shown in Fig. 2. In l-t-lllS position live steam is admitted to the brake cylinder e from the duct- 9 through 5 the pocket 9 formed in the valve member 9. :The actuatlng device 0 is arranged to shift Ethe valve 9 through the action oi the link '0 and elbow lever 0 thereby producing a movement of the valve member 9 to the left, Fig. 2. Such movement closes the steam 1 duct g and connects the duct f with the exe lease the brake.

' In the operation of the apparatus as thus brake on the trolley engineby gripping the actuating member '0, at the same time start- ;ing the engine by depressing the treadle a, Ethus causing the trolley to be pulled outto tilne the engine is stopped by releasing the itreadle a, and the brake s set by releasing the grip c. The grip 0 15 preferably connected, as described, with one of the levers Z the trolley to run back which is accomplished E by again gripping the handle 0. In order ;to dispense with the clutch connecting the trolley engine with the trolley engine drum 1 it is necessary to provide means whereby the engine may be permitted to reverse lireely during the movement of the trolley intake pipe F which leads to the trolley engine E with a relief valve F which opens communication between said pipe and an exof the engine to escape so that there is no in the reverserunning of the engine.

Yhaust duct g, thus permitting the steam to fexhaust from the brake cylinder 0 and restar described, the attendant releases the.

haust passage F. This permits the steam. trapped in the cylinders upon the stopping pressure to prevent the action of the pistons the proper position, at the end of'which iwhich control the clutches of the hoisting then controlled by means of the leveruD,

git then becomes necessary to release the iblilkd .on the trolley engine drum to permit.

and this isaccomplished by providing the a i engine E, clrurn. E ancl the reliei valve bucket, a traversing rope the trolley, a trolley winding clruin, a pressure fluid engine connected thereto, pressure re- 10. The combination with a bucket or a pair of bucket operating levers, a traver rope, a drum, a pressure fluirl engine, means, means at the bucket operators position for controlling the reliei means.

11. The combination With a bucket of a pair of bucket operating levers, a traversing rope, a drum, a pressure fluid engine, relic means and means including a grasping tlevice on. one oi thebucketoperating levers for controlling said relief means.

1?. The combination with a bucket of pair of bucket operating levers. a travcrsin rope, a clrurn, a pressure fiuicl engine. reliei rueans and means including a pivotcrl hanrl grip on one of the bucket operating levers for controlling saicl rcliet' means.

13. The combination 'With a bucket of a pair of bucket operating levers, a tr versiug: rope, a drum, a pressure fluid engine, engine throttle and relief means and means the bucket operators position for controlling the throttle, and relief means including a foot lever and a manually operable control ls vice.

i l. The combination with a bucket of a pair of bucket operating levers, a traversing rope, a drum, a pressure fiuicl engine, throttle and relief means for the engine and means including a foot lever at. the bucket operators position for controlling said throt tie and relief means.

15. The combination With a bucket of a pair of bucket operating levers, a traversing rope, a drum, a pressure tluicl engine, a brake to control the traversing rope, throttie ancl relief means for the engine, ancli means including two movable control elements at the bucket operators position for controlling said brake, throttle ancl relief means.

16. The combination with a bucket of a pair of bucket operating levers, a traversing rope, a (lllllll, a pressure ilulcl eng1nc,a brake to control the traversing rope, throttle and relief means for the engine, a. :1 means at the bucket operators position for controlling; sairl brake, throttle zt'l'lfl relief means.

17. The combination with a bucket or" a pair of bucket.- operat-ing levers, a traversing rope, drum, a pressure fluid engine, a throttle for the engine, a relief valve anal controlling devices at the operators position for mini throttle and relief valve including a hancl grip on one lever for controlling the relief and a foot lever for controlling the throttle. u

18. The combination with a bucket; of pair of bucket operating levers, a traversing rope, a drum, 5. pressure fluid engine, a throttle, relief means and controlling devices at the bucket operating levers for cont '01-- ling said throttle and relief means incluoing a hand control element and a foot lever for the throttle.

19. The combination Witha bucket oif pair oi bucket operating levers, a traversing" rope, a (lriun, a pressure tluitl engine, a brake, a throttle, relief means, anal control ling rlcvices at the bucket levers for con trolling the brake, throttle and. relief means lIlClUCllllg' a hand control element for the brake anrl the relief means, anol a foot lever for the throttle.

20. The combination with. a bucket or a pair of bucket operating levers, a t ing rope, a rope winding drum anti sure iiuiol engine to turn the some, for controlling the traversing rope, t ancl reli f nieans anal means at the bucket operators position for controlling the trav crsing rope including a foot control element for the throttle, and means moved by the hand or the operator While holding the bucket lever for controlling the brake ancl relief means.

21. The combination with a bucket of bucket ropes, Winding drums and frictions, a pair of bucket operating levers, a trave 5 ing rope, a rope drum an i a pressure tiuioi engine to turn the same, a brake for controlling the traversing rope, throttle and. relief means, and. a foot lever at the opcri-tors position for moving the relief means.

in a hoisting apparatus, the combination with a bucket of a bucket operating; lover, a traversing rope, a rope "Winding drum and pressure fluid engine to turn the some and controlling elements for the traversing rope at the bucket ooerators posit. on including a foot lever land a pivotetl hand grip upon. the bucket operating lever. 23. In a hoisting apparatus, the con. ine tion with a bucket of a pair of bucket opcrating ropes, rope Winding drums, tr'ctions and bucket operating levers, a traversing rope, a rope winding drum and pressure liuirl engine to turn the drum, on enginecontrol device, a brake for the drum, a pressure fl l]l(l21Ci3t12llZCl device to operate thebrake, a valve for said pressuroiiLuci-actuated device, a pivoted. hand grip and a bucket-lever to control. said valve, and a foot lever to open zit/e said engine controlling clevicer lilo 24. The combination with a hoisting bucket of a pair of bucket operating levers, a traversing rope, a rope Winding drum, a pressurefluid engine, the latter constantly connected to said drum, and means at the bucket operators position for controlling the starting, stopping, and reverse movements of said drum and its connected engine.

.25. The combination With i a hoisting bucket of'a pairof bucket operating levers, a traversing rope, a rope Winding drum, a pressure fluid engine, the latter constantly connected to said drum, and means adapted to be controlled by the bucket operator While still maintaining his hold upon the bucket levers for controlling the starting, stopping and reverse movements of said drum and its connected engine.

26. The combination with a hoisting bucket of a pair of bucket operating levers, a traversing rope, a rope Winding drum, :1. pressure fluid engine, the latter constantly connected to said drum, and means including a. grasping device upon the bucket levers and adapted to be cont-rolled by the bucket operator while still maintaining his hold upon the bucket levers for controlling the starting, stopping and reverse movements of said drum and its connected engine.

27. In a hoisting apparatus, the combination with a bucket of a pair of bucket levers, a. traversing rope, a rope Winding drum and a pressure-fluid engine connected to turn the drum, throttle means, engine relief means, means controlling-said throttle means and said relief means at the bucket operators position including a grasping device mounted on one of the bucket operating levers.

28. The combination with a bucket of a pair of bucket operating levers, a traversing rope, a rope Winding drum, a pressure fluid engine to turn the drum, throttle means, reliet' means and a single control element for controlling both the throttle means and the relief means from the bucket operators position.

29. The combination With a bucket of a. pair of bucket levers, a traversed support, a traversing rope, a rope Winding drum, a

pressure fluid engine to turn the same, engine relief means, throttle means, a brake for said drum and two controlling elements at the bucket operators position for controlling-said relief means, throttle and brake, including a manually actuated member connected to one of the bucket levers.

30. The combination with a bucket of a pair of bucket levers, a traversed support, a traversing rope, a rope Winding drum, a pressure fluid engine to turn the same, engine relief means, throttle means, a brake for said drum, and two controlling elements at the bucket operators position for controlling said relief means, throttle and brake including a grasping device mounted upon one of the bucket levers.

31. The combination With a bucket of a pair of bucket levers, a traversed support, a I

traversing rope, a rope Winding drum, a pressure fluid engine to turn the same, engine relief means, throttle means, a brake for said drum, and two controlling elements at the bucket operators position for controlling said relief means, throttle and brake including a manually'actuated control element adapted to be moved by the bucket operator.

32. The combination with a bucket of a pair of bucket levers, a traversed support, a traversing rope, a rope Winding drum, a pressure fluid engine to turn the same, engine relief means, throttle means, a brake for said drum, and two controlling elements at the bucket operators position for controlling .said relief means, throttle and brake including a member adapted to be moved by the bucket operator While maintaining his hold upon the said bucket levers.

In testimony whereof, We have signed our names to this specification in the presence of 'tWo subscribing witnesses.

JOHN W. HAMMOND. JOSEPH F. DONAHUE. Witnesses for John W. Hammond:

E. K. HAMMOND, 'THos. L. MoDnRMo'r'r. Witnesses for Joseph F. Donahue:

TrroMAs B. Boorrr, EVERETT S. EMERY.

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