US1379311A - Excavating-shovjbl - Google Patents

Description

J. W. PAGE.

EXCAVATING SHOVEL.

APPLICATION FILED IAII. n. 1919.

1,379,31 1 Paten'wd May 24, 1921.

-:UNITED STATES PATENT OFFICE.

JOHN W; PAGE, OF CHICAGO, ILLINOIS.

Patented May 24, 1921.

EXCAVATING-SHOVE'L.

1 379 311 Specification of Letters Patent.

, Application filed March 17, 1918. Serial No. 288,030.

To all wliom it may concern.-

Be it/lmown that 1, JOHN W. PAGE, :1. citiaen .of' the United States, residing at 13280;:argoavenue, Chicago, in the county of; k and State of Illinois, have invented a new and meful Improvement in Excavat' -Shovels, of which the following is a speii i gcation.

"Myinvention relates to certain new and useful rovements in excavating shovels and is fil 6 specification and shown in the accompanydrawings,,in which-- .iigurel IS a s de elevat on of the POItlOIlS.

of the bucket e uipment in which my invention inheres. 2 is a vertical central lon%tudinal section on the line 2 of Fig. 3.. .ig. 3 is a plan and Fi 4 is a transverse section the line 4 0% Fig. 2.

The present invention consists in a device for firmly and satisfactorily securing tofiethelithe loading or hauling line, its two orizontalcxtensions .which run to the side oflthebncket, and the upwardly extending holding ro which are employed in connection it the Page bucket which is now thorough y .kuown'to and in common use among engineers. In the drawings, 5 is the hauling line, 6 are two chains forming its horizon l eontinuations and which are attached to e 't'wo'vertical side walls of the bucket at their front edge, and 7 is the holding line which runs diagonally upward around a sheave and down to a point on the bucket in front of its center of gravity. It is of the utmost importance in the practical use of excavating buckets of this character, that these four lines be very securely attached together by means which the tremendous strains of use not only are unlikely to destroy, but which are but slightly affected b wear. To this end, I provide a casting aving at its forward end a forwardly tapered hollow tubular member 8, which is considerably narrower horizontally than vertically. The hauling line 5 enters this member, 1s recurved upon itself around a grooved wedge-shaped piece 9 and is then drawn into the tubular member 8 from the rear. In this way a wedging, self-binding connection is made between the loading line and the casting. Two arms 10 extend backward and outward from the tubular member 8 of the casting, the same being provided, as illustrated with suitable horizontal y described and explained in the and vertical ribs for strength. Each arm is forked at the rear formi furcations 14 and 15. 16 1s a holding hne casting, the same having a perforate bearing member 17 at its forward end ands. vertical wedgeshaped tubular member 18 at its rear and, similar in general form to the tubular member 8. 19 1s a shaft which extentk through the furcations 14 and 15. The forward links in the chains 6 surround this shaft and he between the pair of furcations 14 and 15 on the two-sides. The bearing member 17 of the holding line casting 16 likewise surrounds the shaft and lies between the two, furcations 15. The shaft is held n place by cross pins 20 engaging notches n the furcations 14:. The holding line 7 1s recurved upon itself to receive a wedgeshaped member 21, grooved to receive it and is drawn into the wedge-shaped tubular member 18 on the holding line casting 1,6. This likewise forms a self locking and very tight connection.

The foregoing construction is very simplein constructlon and very rugged in operatron. The various connections can be very quickly disengaged and rengaged if it is desired elther to change ropes or to adjust the point at which one or another of the ropes is secured. The wedges which hold the hauling and holding lines can be quickly knocked out when the ropes are slack and the cables can be readily readjusted. The holding line often is readjusted in practice, depending upon whether it runs directly down to the shovel, 0r runs over a sheave and returns to adjust the amount of vertical lift which the bucket receives. It is to be noted that the bearing of the holding line casting on the shaft 20 is slightly eccentric so that a very considerable amount of wear can take place before replacement is necessary.

I realize that considerable variation is possible in the details of the construction herein shown, and I do not intend to limit myself thereto, except as pointed out in the following claims in which it is my intention to claim all the novelty inherent in the device as broadly as is permitted by the state of the art.

What I claim as new and desire to secure by Letters Patent, is-

1. In combination, a casting comprising a body portion having a wedge shaped tubular opening therethrough, a pair of arms extending from said body portion, each of said arms being bifurcated at its outer end, a hauling line bent upon itself and passing through said tubular opening, a wedge 00- operating with said tubular opening to hold the.,hauling line therein, a holdin line, means for retaining said holding line and means carried by the arms to support said holding line retaining means. I

2. In combination, a casting comprising'a body portion having hauling line attaching means,therein,=a pair of arms extending rearwardly from the body portion, a bifurcated. end on each of said arms, a second casting comprising a body portion having holding line attaching means therein, a member vextending from said second mentioned bodyportion and terminating in a bearing member, and means carried by said arms engaging said bearing member to confine the same between the bifurcated ends.

3. In combination, acasting comprising a body portion having a wedge shaped tubular opening therethrough, a hauling line bent upon itself and passing through said tubular opening, a wedge cooperating with said opening to hold the hauling line therein, a pair of arms extending from the body portion and terminating in a bifurcated end, a

second casting comprising a body portion having a wedge shaped tubular opening therethrough, a holding line bent upon itself and passing through said opening, a wedge cooperating with said openin to hold the holding line therein, a recessed member extending from said second mentioned body portion and terminating in a bearing member, a cross shaft carried by the bifurcations on the'arms and forming a pivot for said bearing member, and means for holding the cross shaft in position.

4. In combination, a main casting and a holding line casting, the main casting having two arms each bifurcated at the rear ends thereof, bifurcated ends carrying a cross shaft upon which the front of the holding line casting is pivotally supported between the central pair of bifurcations, horizontal extensions for the hauling line engaging the cross shaft-between the members of each bifurcated end, wedge-shaped tubular members at the opposite ends of the two castings in which the hauling and holding lines are respectively'held, each of said lines being recurved upon itself and passed' through the wedge-shaped member and each having within its bight a grooved 'wedge whereby a self locking connection is secured.

5. In combination, a main casting and a holding line casting, the main castingj having two arms each bifurcated at the rear, said furcations carr 'ng a cross pin upon which the front of t e holdingline casting is supported between the central pairof fur-f cations, horizontal extensions for the hauling line engaging the cross pins betweenthe v lateral pair of'furcations, wedge-shaped tubular members at the opposite ends of the two castings in which the hauling and holding lines are respectively held,each' being recurved upon itself and passed throughfthe wedge-shaped member and each having within its bight a grooved wedge whereby a self locking connection is secured. i

In testimony whereof I have hereunto set. my hand and seal this 14th day of March, 1919.

JOHN W. PAGE. [L. s'.] 1 g

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