US1637073A - Scraper - Google Patents

Description

July 26, 1927.

I SGRAPER Original Filed Nov. 26, 1924 A. B. ESSELTINE 2 Sheets-Sheet. 1

1,637,073 y 26, 1927- A. B. ESSELTINE SCRAPER Original Filed Nov. 26. 924 2 Sheets-Sheet 2 Jflmd Esseliz'ne Zd-Em'ss f? Patented July 26, 19f

UNITED STATES PATENT OFFICE.

ALFRED B. ESSEL'IINE, or CHICAGO, ILLINOIS, ASSIGNOR T GOODMAN MANUFACTUR- me COMPANY, OF CHICAGO, ILLINOIS, A.

CORPORATION OF ILLINOIS.

SCRAPER.

Application filed November 26, 1924, Serial No. 752,292, and in Canada March 24, 1924. Renewed January This invention relates to improvements in draft operated scrapers used for gathering and transporting loose material and.

more particularly to the type or" scraper disclosed in my prior application. bearing Serial Number 683.116. filed December 28,

1923. and has for its principal object to provide an improved automatically adjustable and movable tail rope connection.

As in my prior application mentioned above. the scraper herein disclosed is capable of being initially deflected from its normal path of movement to gather loose material distributed over relatively wide areas. It may also be automatically opened and used in either a. right or left-hand operation with equal facility without change in construction. and provides an improved method of gathering coal or the like from a mine room.

A scraper having movable side walls is provided, said walls being pivotally connected at the rear end thereof. such scraper being reciprocably movable by means of a head rope and a tail rope. in the present instance the latter having movable connection along a toggle member at the rear end ot the scraper. Means are also provided for engaging the side of the toggle member lying adjacent the outer side of the scraper, i. e., the side away from the working face. whereby the scraper is automatically opened when drawn rearwa-rdly toward the tar corner of the room and its initial forward movement will be directed laterally to gather the loose material at one'side of its normal path of rearward movement, that is, toward the working face of the mine.

Details of this invention may be best understood by reference to the accompanying drawings, in which:

Figure 1 is a rear view in perspective of a scraper constructed in accordance with my invention;

Figure 2 is a plan view of the scraper showing it in closed position in full lines and partially opened in dotted lines;

Figures 3. 4 and 5 and 6 are views illustrating a typical installation of the scraper in a mine and showing it in tour diflerent positions during a loading operation.

Referring now to details. the scraper comprises a body made up of two side walls 10, 11, preferably diverging from the rear to the front end thereof, although other forms and shapes of scraper body may be provided, if desired. The scraper is preferably bottomless. the walls 10 and 11 being provided with inwardly extending flanges .12, 12, along their lower margins to form cutting edges for engaging the material to be gathered. The walls 10 and 11 are pivotally connected by av hinge, which may be of any suitable form, for instance, it may comprise a pair of eyes, 13. 13, on one wall 10, and an intermediate eye 15 on the other wall 11, with a hinge pin 15 of any approved pattern eXt-ending therethrough. As shown herein the side walls 10, 11, are hinged centrally ot' the rear end although undersome conditions it may be desirable to vary the posi tion of the hinged connection toward one side of the scraper.

Means are provided for limiting the movement of the scraper sides toward each other. In the form shown this means comprises a pair of telescoping members 16 and 17 pivotallv connected respectively near the forward ends of the scraper walls. As shown herein the member 16 comprises a bar and is movable longitudinally in a. hollow pipe forming the member 17. The arrangement is such that the free end gages a stop 18 on the bar to limit the inward movement of the walls 10 and 11.

As shown herein the tail rope connection comprises a link 28 having a roller 26 thereon, secured in movable engagement with the inner edge of an arcuate toggle member 27, thus permitting free movement of the roller and toggle with respect to each other. The outer ends of the toggle member 27 are piv otally joined at 31 and 32 respectively to one end of the links 34 and 35. The inner end of the link 34 is pivotally secured to the adjacent wall 10 of the scraper'by means of a pin 36 in a bearing 37, herein formed integral with the eye' 14. Similarly the inner end of link 35 is pivotally secured to the wall 11 by a pin 38 extending through the bearings 39, herein formed integral with the eyes 13, 13. The arrangement is such that an unobstructed. normal pull rearward on the tail rope 22 will not tend to open the scraper, but when either side of the toggle member 27 comes into contact with a stop or the like, as for eXample'the arm 27 contacting with the stop 10, the former is forced inwardly of the pipe l'tenwith the link toward the scraper wall 11.

and causes the pivotal connection 28 and the link 35 to be forced outwardly from the wall 10, whereby a pull is exerted in a direction to force the wall outward or open with respect to the opposite wall 11. It will be apparent'that at the same time the arm 27 contac with the stop 40 the roller 26 and link 28, to which the tail rope connected, will move over toward the opposite arm 27*, well beyond the center line of the toggle member 27, and thus add or exert an additional pull to force the scraper open. Similarly, a contact between the arm 27 and the stop a0 would force the former, together with the link 35, inwardly toward the scraper wall 10, whereby a pull would be exerted upon the wall 11 through the pivotal connection 29 and the link 84;, and the tail rope would move beyond the center point of thetoggle member 27 toward the arm 27.

The use and operation of'the scraper above described will be understood by reference to Figures 3, at, 5 and 6, illustrating its use in a mine room. In this instance the scraper is i being used for gathering loose material adjacent the working face, indicated at 30. A side wall, or rib 33 meets the working face 30 at an angle, forming a corner as shown in these figures. In Figure 4 a pile of loose material has been deposited on the floor ad jacentthe working face, the toe or forward edge of this pile being indicated at 42. The Scraper is'installed for reciprocable movement in the usual manner along the working face, as well known to those familiar with mining methods. The tail rope 22 is trained over a sheave or guide &1 fixed by a jack or similar means against the side wall or rib 33 and adjacent the working face 80, substantially as shown in the diagram.

In the loading operation the scraper is pulled rearwardly by the tail rope which is engaged with the toggle member 27, substantially in alignment with its longitudinal axis. As the scraper approaches the corner of the room, as shown in Figure 4, one side of the member 27 will become engaged with the stop 4:0, which herein is preferably a mine jack of the usual type, whereby further draft on the scraper will cause it to swing about at an angle to its normal course of rearward movement. Simultaneously, this movement tends tb swing the scraper side 10 pivotally on its hinge into an open position. In Figure 5 the scraper is shown in its farthest position adjacent the sheave 41, in which position the tension on the tail rope is released. It will be observed that the hinged portions or walls 10 and 11 are fully spread apait so that the head rope terminals 21, 21 are substantially in a straight line to limit further movement of the walls. The scraper is thus automatically brought into position to initially engage the pile of loose material while directed toward the working face. Obviously, the stop or jack 40 may be positioned at will to actuate the scraper at any desired point and may be placed on either side of the tail rope to direct the scraper toward the opposite side. Furthermore, the tail rope sheave or guide l-l may be used as a stop when the scraper is to be moved into the far corner of the room. The use of the guide d1 in this manner is illustrated in dotted lines in Figure 2.

lVhile I have shown and described one form in which my invention may be embodied it will be understood that the ar rangement and construction of the parts may be altered without departing from the spirit and scope of the invention. Furthermore, I do not wish to be understood as limiting myself to the particular construction illustrated except as specifically limited in the appended claims.

I claim as my invention:

1. A scraper provided with forwardly extending walls movable laterally with respect to each other, toggle means at the rear end of the scraper having connection with both of said walls, and a tail rope having movable connection with said toggle adapted to produce balanced draft on said walls in one position of said toggle means, and to produce unbalanced draft in another position of said toggle means.

2. A scraper provided with forwardly extending walls movable laterally with respect to each other, toggle means at the rear end of the scraper having connection with both of said walls, and a tail rope having movable connection with said toggle means to move the scraper in a rearward direction, said toggle means being adapted to engage a a fixed stop at one side of said rope to swing said scraper at an angle to its normal path of rearward movement.

3. A scraper provided with forwardly extending walls movable laterally with respect to each other, toggle means at the rear end of the scraper having connection with both of said walls, and a tail rope having movable connection with said toggle means to move the scraper in a rearward direction, said toggle means being adapted to engage a fixed stop at one side of said rope and being operable to automatically open said walls.

4. A scraper provided with forwardly extending walls movable laterally with respect to each other, toggle means at the rear end of the scraper having connection with both of said-walls, and a tail rope havin'g' movable connection with said toggle means to move the scraper in a rearward direction, said toggle means being adapted to engage a fixed stop at one side of said rope and being operable to automatically open the wall opposite the side engaged by said fixed support.

5. A scraper provided with forwardly extending walls movable laterally with respect to each other, toggle means at the rear end of the scraper having connection with both of said walls, and a tail rope having movable connection with said toggle means to move the scraper in a rearward direction, said toggle means being adapted to engage a fixed stop at either side of said rope to swing said scraper at an angle to its normal path of rearward movement.

6. A scraper provided with forwardly extending walls movable laterally with respect to each other, and a rope having lateral movable connection with rocking member at the rear end of said scraper, said rocking member being adapted to engage a fixed stop and operable to automatically open said movable walls.

7 A scraper provided with forwardly extending walls movable laterally with respect to each other, and a rope having laterally movable connection with a rocking member at the rear end of said scraper, said rocking member being adapted to engage a fixed stop at one side of said rope, operable to produce an unbalanced tension on said rocking member.

8. A scraper provided with forwardly extending walls movable laterally with respect to each other, a head rope, and a tail rope having laterally movable connection with a rocking member at the rear end of said scraper, said rocking member being adapted to engage a fixed stop at either side of said rope and operable to automatically open said movable walls.

Signed at Chicago in the county of Cook and State of Illinois, this 19th day of November, A. D. 1924.

ALFRED B. ESSELTINE.

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