US1956791A - Ball frame for shaker chutes - Google Patents

Description

May 1, 1934. A. w. CLARKE 1,955,791

BALL FRAME FOR SHAKER CHUTES Filed July 29, 1952 INVENTOR #55672 WCZarA e I A'IZTORNEY Patented May 1, i934 are BALL FRAME FGR SHAKER CHUTES Application July 29, 1932, Serial No. 625,635

2 Claims.

This invention relates to shaker chutes used in mining operations and for other purposes and has particular reference to the ball frames which support the individual trough sections of the chutes.

Shaker chutes usually comprise a plurality of connected trough sections which are reciprocatcd by a suitable power device connected to one of said sections, termed the drive section,

1 and at intervals the individual trough sections are supported for reciprocation on ball frames.

During reciprocation of a shaker chute, forces arise which tend to shift the chute in a vertical as well as a sidewise direction. In View of this,

one object of the present invention is the provision of a ball frame for shaker chutes which is so formed as to restrain the chute sections against excessive vertical and sidewise shifting.

Another object of this invention is the provision of a new and improved ball frame for shaker chutes which is easy and inexpensive to manufacture and strong and durable in operation.

Other objects and advantages of this invention will be apparent from the following description taken in conjunction with the accompanying drawing in which:

Figure l is a top plan view of a ball frame constructed in accordance with the present invention.

Fig. 2 is a sectional View taken on the line 22, Fig. 1; the view also showing, in section, a trough section applied thereto, and

Fig. 3 is a side elevation of the construction shown in Fig. 2 with certain parts thereof broken away to show other parts in section.

Referring now more particularly to the drawing in which similar characters of reference designate similar parts in the several views, the ball frame of the present invention comprises a base frame indicated generally at A and a reciprocable trough supporting body member B for supporting a trough section indicated generally at C and to which said trough section is connected.

The base frame comprises a pair of spaced members 2, downwardly facing channels in the instance shown, connected by spaced rigid members l secured thereto at points spaced from the ends of the channels 2, as shown clearly in Fig. l. The members 4 each form a ball race and preferably are angles, the horizontal legs 6 of which are inwardly extended and the vertical legs 8 have their upper edge portions inwardly flanged toward each other, as shown at 10. The body member B in the instance shown comprises a pair of plates 12 arranged side by side (see Fig. 1) in spaced relation to provide a space 15 therebetween, the end portions of said plates being secured to the webs 14 of downwardly facing channels indicated generally 69 at 16 and constituting upper race members which rest on anti-friction elements in the form of balls 18 supported by the lower flanges 6 of the angles 4. In the instance shown the plates 12 are of such a length as to underlap the upper flanges ll) of the angles 4 though this is merely by way of example. The plates 12 and channels 16 are preferably connected by welding, as shown at 20.

For stiffening purposes, portions of the contiguous edges of the plates 12 are downwardly flanged as shown at 22 and receive therebetween the leg 24 of a T section 26 secured in any suitable manner to the under surface of the bottom 28 of the trough C, the T 26 obviously providing a means for connecting the trough section C to the body member B.

Each end of each of the channels 16 is preferably closed by a stop or scraper member 30 welded within the channel as shown at 32 and constituting end stops for the balls 18 and also providing a means for cleaning the lower race member or angle l of dirt or other foreign matter which may collect therein during reciprocation of the body member. Intermediate the ends of the channels 16 a partition 34 is provided which is welded within the channels and serves as a spacer which serves to retain the balls 18 in spaced relation.

On each of the channels 2, intermediate the end portions thereof and between the angles 4, stop members 36 are provided in the form of angles with which the flanges 32 of the plates are adapted to contact to prevent accidental separation of the body supporting member B and the base frame A when moving the device from place to place.

From the above description it is believed that the construction and operation of the device of the present invention will be fully apparent to those skilled in the art. When the trough section C is reciprocated the movement obviously is transmitted to the T 26 and to the body member B because of the connection therebetween shown clearly in Fig. 3. Reciprocation of the trough section obviously will cause a reciprocation of the body member B on the balls 18. Tendency of vertical shifting of the body member B relative to the base frame is prevented by the overlapping relation of the flanges 10 of angles 4 I10 with the body member (see Fig. 2) and sidewise shifting of said body member is reduced to a minimum by contact of the webs 8 of the angles 4 with the outer flanges of the upper race members or channels 16. As previously mentioned, should dirt or other foreign matter tend to collect in the lower race members 4 it is eliminated by the scraper members 30 and also by the partitions 34; being forced out from the ends of the angles 4 or being permitted to escape from the angles due to the space between the lower or horizontal flanges 6 thereof and the lower portions of the flanges of the channels 16.

The drawing illustrates one embodiment of the invention but it is to be understood that it is for illustrative purposes only and various changes in the form and proportion of the device may be made within the scope of the appended claims without departing from the spirit of the invention.

What is claimed is:

1. In a ball frame for shaker chutes, a base frame including lower race members each having a horizontal flange and a vertical flange, the upper edge portions of the latter being inturned, anti-friction elements supported on the horizontal flanges of the race members, and means for supporting a trough section for reciprocation comprising downwardly facing channels sup ported on the anti-friction elements with one flange of each thereof adjacent the vertical flanges of the lower race members whereby exrosavei cessive sidewise shifting of said channels is restrained by contact thereof with said vertical flanges and a body member having opposite edge portions thereof secured to the webs of said channels and underlying the inturned portions of the vertical flanges of the lower race members whereby excessive vertical shifting of said body member is restrained by contact thereof with said inturned portions.

2. In a ball frame for shaker chutes, a base frame including lower race members each having a horizontal flange and a vertical flange, the upper edge portions of the latter being inturned, anti-friction elements supported on the horizontal flanges of the race members, and means for supporting a trough section for reciprocation comprising downwardly facing channels supported on the anti-friction elements with one flange of each thereof adjacent the vertical flanges of the lower race members whereby excessive sidewise shifting of said channels is restrained by contact thereof with said vertical flanges, and a body member comprising a pair of plates arranged side by side in spaced relation with their end portions secured to the webs of said channels and underlying the intiu'ned portions of said race members, portions of the contiguous edges of said plates being downwardly flanged in parallel relation with the end portions of said flanges arranged adjacent and secured to the inner flanges of said channels.

ALLEN W. CLARKE.

Images