US1398049A - Dredge-frame bushing - Google Patents

Description

w. w. SWAYZE, JR. DREDGE FRAME BUSHING.

APPLICATION FILED JULY 30,1921.

1 98,049, Patented Nov. 22, 1921.

NTOR V/LL/AM W. \SWA 2:, JR.

W VWM A TTORNEYS UNITED sures PATENT OFFICE.

wnmnm wrmmn swarm an, or wILmmeroN, DELAWARE, ASSIGNOR 'ro AMERI- on: MANGANESE sum. commuw, or AUGUSTA, MAINE, A CORPORATION or MAINE.

DREDGE-FBAIE BUSHING.

T 0 all whom it may concern:

Be it known that 1, WILLIAM W; SWAYZE,

'Jr., a citizen'of the United States, and .a

- although it may be used in other relations as will more fully hereafter appear.

As heretofore constructed, the main shaft of a dredge frame was subject to considerable wear requiring its frequent renewal, and it is accordingly an object of the present invention to provide a construction whereby the entire wear due to the turning 'ofthe main shaft will be borne by the bushing and the shaft proper will be entirely protected from wear.

A furthe'r object is to provide a construetion whereby the main shaft is protected from wear despite the enormously high strains to which it is exposed and wherein the jars, impact and side thrusts will be taken up by the bushing and the dredge frame.

A further object is to provide a simple,

practical and efficient construction whereb the bushing is anchored to the main shaft and not only rotateswith respect, to the main frame, but is also capable of transmit- .ting side or end thrust from the main shaft to the frame without wear upon the former, .so that the main shaft which is an expensive part will be capable of long and extended servlce.

Afurther object is to accomplish the forementioned ends in a simple, practical and economical manner, and with the foregoing and other objects in view my inven- .tion consists in the improved bushing and associated parts illustrated in the accompanying drawings and described in the following specification, and in such variations and modifications thereof as will be obvious to those skilled in the art to which my invention relates, it being understood that changes may be made within the scope'of what is, claimed without departing from the spirit of the invention.

The preferred embodiment of my inven- Specillcation of LettersPatent.

of the bushing; and

bushing, as clearl Patented Nov. 22,

Application fled July so, 1921. Serial No. 488,577.

Fig. 4 is a detail view in front elevation Fig. 5 is a view in vertical section taken on the line 5-5 of Fig. 4. a

Referring specifically to the several views wherein similar reference numerals designate corresponding parts, the main frame 10 of the dredge is provided with a removable socket 11 the same and adjoining portions of the framebeing provided with a cylindrical bore 12 extending therethrough. The sides of the frame adjacent the bore are faced as at 13 so that the bushing 14 is capable of rotating within the bore 12 and is held against endwise shifting by outstanding flanges 15 and 16 which contact with the faced surfaces 13 of the frame;

The bushing is formed in one piece and is moved into the bore 12 by first removing the socket 11, depositing the bushing in the lower half of the bore and then returning the socket member to place, and so securing it by the bolts or other holding means 17. The

5, is provided wit 1 the internal -bore 18 and with an integral key 19 projecting therein. This key as illustrated in 'Fig. 5, extends from the outer end of the bushing to a point well toward the inner end or surface 20 thereof. p

The outer extremity bf the bushing is also provided with outstanding spaced lugs 21, four in number, anddefining therebetween the alined slots 22. The main shaft 23, a portion of which only is shown, is provided with the shoulder 24, which rests against the outer face of the flange 15 and is further provided with a key way opening 25 into which the internal key 19 of the bushing extends, thus rigidly locking the bushing to the main shaft throughout practically the entire length of the former and thus holding the two against relative turning. In order disclosed in Figs. 4 and 'tus.

to further insure the locking of the bushing to the shaft and at the same time to provide for the transmission of end thrust from the main shaft to the dredge frame, the main shaft is provided adjacent its outer extrem ity with the slot or opening 26 extending therethrough and into which fits the key 27. The key'thus extends diametrically through the main shaft and has its protruding ends seating Within the alined slots 22.

A second and smaller keyv 28 extends through the main kc and is so held by a cotter pin 29 or 0t er equivalent means whereby'the auxiliary key 28 and the main ke 29 are securely locked in place.

l Vith the various parts as thus constructed, no Wear Whatever Will be bornev by the main shaft as the bushing- Will turn therewith regardless of the enormous strains to Which these parts are exposed. Further, the constant rackin and resulting Wear and tear due to the ropping of the dredge bucket into the material to be excavated, as Well as the enormous lateral or side thrust Will be borne by the bushing which maybe readily renewed and thus provide for the economical operation ofthe entire appara:

Havin thusfully described my invention What I c aim is 1. The combination With a dredge frame therein, and having a shoulder thereon, a

bushing having spaced flanges and anili- Wardl extending key fitting "into the. key Way s 0t of the shaft andwith the one flange abutting against the shoulder of said shaft,

said frame provided with a bore rotatably reeeivingthe bushing therein and holding it against endwise shifting, and means engaging the protruding extremity of the shaft and the bushing and holding the shaft against endwise shifting withrelation to the bushing.

2. An apparatus of the class described comprising a supporting member having a bore extending therethrough a bushing rotatably mounted Within saidbore and provided With upstandin'gffianges holding it from displacement therefrom, said bushing provided with an-internal integral key and with alined slots at one extremity, and a shaft having a key Way therein receiving saidkey of-the bushing, means to prevent the endwise shifting of the shaft With relation to the bus ingjn one direction, and a key extendin transversely through" the shaft and sea tlng Within the alined slots of the bushing and holding the shaft from end- Wise shifting in the opposite direction.

3."A bushing formed with end flanges, an internal integral key and outstanding spaced lugs carried at one extremityof said bushing and defining a slot therebetween.

Signed at Wilmington, in the county of New Castle and State of Delaware A. D.

-1921- of a shaft provided with a' key way slot,

WILLIAM WILMER SWAYZE, .lr.

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