US1226869A - Chain-release for logging-cars. - Google Patents

Description

Witnesses find by J. DODD.

CHAIN RELEASE FOR LOGGING CARS.

APPLICATlON FILED OCT. 14, 1916.

1,226,869. Patented May 22,1917.

Inventor Attorneys JOHN DODD, on roRT ARTHUR, TEXAS.

CHAIN-RELEASE FOR LOGGING-CARS.

Specification of Letters Patent.

Patented May 22, 1917.

Application filed October 14, 1916. Serial No. 125,661.

This invention relates to chain releases for logging cars, one object being to provide a simple structure of this character by means of which a chain such as used for fastening logs to a car will be held securely, it being possible to shift said release from a point adjacent one side of the car while the released logs will fall from the opposite side of the car, thereby eliminating danger of in jury to the operator by the falling logs.

A further object is to provide a device of this character which is simple and compact in its construction, can be applied easily, and is capable of resisting severe strains.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, can be made within the scope of what is claimed, without departing from the spirit of the invention.

In the accompanying drawings the preferred form of the invention has been'shown.

In said drawings Figure l is a side elevation of the release device constituting the present invention, the same being shown applied to a car sill.

Fig. 2 is an enlarged elevation of the release device.

Fig. 3 is a section on line A-B Fig. 2, the chain being removed.

Referring to the figures by characters of reference 1 designates a car structure, and 2 is a sill thereon from one side of which extends a loop 3 located preferably adjacent one end of the sill. A pivot bolt 4 is extended transversely through the sill adjacent the other end thereof and projects a short distance beyond one face thereof, said bolt having an inwardly and upwardly inclined brace 5 integral therewith and which is fastened to the sill by a bolt 6 or in any other suitable manner. The projecting portion of the bolt 4 constitutes a pivot for a a dog 7 provided with a forked arm 8 at its upper end, while another arm 9 extends downwardly and is forked as at 10. This depending arm 9 has an actuating bar 11 pivotally mounted therein and extending along'the sill 2, there being a notch 12 in the lower edge of the bar for the reception of the lower portion of loop 3 whereby the bar is held against longitudinal movement in one direction. The members of the forked end 8 are so shaped as to readily receive between them a link of a chain 13. This chain is adapted to extend over the load on the car and one end of the chain is fastened to the upper portion of the loop 3 through which the bar 11 extends. Under normal conditions the arm 9 is extended downwardly and the forked end 8 is extended substantially horizontally, the parts being held in these positions by the bar 11, the notched portion 12 of which engages the loop 3. 'By placing a link of the chain 13 in engagement with the forked end 8 while the parts are thus disposed, the chain will be held against detachment by pressure from the load on the car. Furthermore by extending the brace 5 upwardly and outwardly as shown, the pressure transmitted through the chain 13 to the dog 7 will be resisted by this brace and, consequently, the danger of the dog being pulled out of proper position is eliminated.

The bar 11 extends to a point where it can be conveniently reached by a person standing close to that side of the car remote from the dog 7 Obviously, therefore, when it is desired to release the load, the operator by lifting upwardly on the free end of bar 11 will release said bar from the loop 3 and a pull through chain 13 and upon the forked end 8 of the dog 7 will cause said dog to swing about its pivot and slide the bar 11 longitudinally. hen the dog is thus actuated and brought to the position indicated by dotted lines in Fig. 2, the chain will slip out of engagement therewith. and the load will be released, the logs rolling off of that side of the car remote from the operator. By utilizing a dog such as described there is no danger of the chain becoming hung and the load will always be delivered without hindrance. Importance is attached to the fact that the pivot bolt 4 is braced in the particular manner pointed out, this brace be ing extended parallel to the line of force ex erted through the chain 13 and serving to positively brace the pivot bolt against distortion.

What is claimed is The combination with a car sill, and a holding loop outstanding from one side thereof adjacent one end, of a pivot bolt outstanding from said side adjacent the other end, an upwardly and outwardly inclined brace integral with the outer end of the pivot bolt and secured to the sill, a dog pivotally mounted upon said bolt and having a forked upl er end extended normally in a horizontal direction inwardly from the bolt, a bar pivotally connected to the lower portion of the dog and mounted for sliding movement in the holding 100p, said bar having a notch for the reception of the loop to hold the dog against swinging move ment in one direction, and a chain secured at one end to the loop and adapted to engage the forked portion of the dog.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

JOHN DODD.

Witnesses:

' JEFF. D. MoELRoY,

G. J. WALDREP.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

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