US1094060A - Unloading apparatus. - Google Patents

Description

T. H. DONOVAN.

UNLOADING APPARATUS.

APPLICATION FILED MAB. 5, 191a.

Patented Apr. 21, 191i 2 SHEETS-SHEET 1.

' away/701a 7/7. 00/70 r0 WITNESSES A ltarnzy COLUMBIA PLANOGRAPH CO.,WASHINGTON, D, C.

. D O N OVAN UNLOADING APPARATUS.

APPLICATION FILED MAR. 5, 1913.

Patented Apr. 21, 19M

2 SHEETS-SHEET 2.

A Home COLUMBIA PLANOGRAPH co WASHINGTON, D c.

Cit

' TED STATES PATENT OFFICE.

TIMOTHY HAYES DONOVAN, OF RAYMOND, WASHINGTON, ASSIGNOR OF ONE-HALF TO RALPH GERBER, OF RAYMOND, WASHINGTON.

UNLOADING APPARATUS.

To all whom it may concern Be it known that I, TIMOTHY H. DONOVAN, a citizen of the United States, residing at Raymond, in the county of Pacific and State of Viashington, have invented certain new and useful Improvements in Unloading Apparatus, of which the following is a specification. 7

The apparatus which is the subject of the present invention is designed for unloading logs from logging cars, and its object is to provide an apparatus which is rapid in operation and which can be controlled without danger of injury to the operator.

The apparatus consists in a horizontal sweep which is so located with respect to the car that its arms swing in an arc cross ing the car, so that when the free end of one of said arms is placed against the load and the car is moved forward, the load is pushed laterally off the car.

in order that the invention may be better understood, reference is had to the accompanying drawings in which-- Figure 1 is an elevation of the apparatus; Fig. 2 is a plan view thereof, and Fig. 3 is a vertical section on the line33 of Fig. 2.

Referring specifically to the drawings, 5 denotes a piling arranged in a square and braced on the top by planks 6, and on the sides by planks 7. In the center of the piling is an upright post 8 firmly secured to the piles 5 by suitable braces 9. The post and piles are securely anchored by being driven into the ground a suitable distance.

Pivotally suspended from the top of the post- 8 is a four-armed revolving sweep, the arms 10 of which are horizontal and swing in a horizontal plane. 'The arms are rigidly connected at their inner ends by angleplates 11, said ends being spaced from the post 8. The arms are also connected by diagonal brace rods 12, one of which latter is provided with a turnbuckle 13. The arms are further braced and supported from the top of the post 8 by means of crossed plates 14- and rods 15 extending from the latter and through stirrups 16 at the top and bottom of the arms adjacent to the inner ends thereof. The arms 10 are connected in pairs by means of cables 17 secured to the arms near their outer or free ends. On the top plate 14 are firmly mounted two pulleys 18 arranged at right angles to each other and one above the other, over which pulleys the Specification of Letters Patent.

Application filed March 5, 1913.

Patented Apr. 21, 1914.

Serial No. 752,132.

cables pass. The arms are thus connected in palrs the members of which are diametrically opposite each other. One of the cables passes over one of the pulleys, and the other cable passes over the other pulley.

I At the top of the post 8 is a cap 19 having 1t-s upper surface slightly convex. Between the cap and the bottom plate 14 may be placed a wear plate 20.

In the top of the post 8 is embedded a p vot 21 on which the sweep turns, which pivot passes through the cap 19 and rises a suflicient distance therefrom so that it may pass through the plate 20, and the bottom plate 14:, and have a bearing in the top plate 1 1. The sweep loosely encircles the post 8, and the arms 10 are thus allowed a limited up and down motion as indicated by dotted llnes in Fig. 1. A semi-circular buffer 22 is removably attached to one side of the post 8.

Around the outer end of each arm 10 is attached, by bolts 23 and a strap 24, a plate 25 extending across the end of the arm and having thereat a series of sharp points 26 to engage the logs to be unloaded. Each arm 10 is provided near its outer end with a suitable handle 27 to facilitate the adjustment of the arm into operative position.

The herein-described apparatus is located adjacent to one side of the track 28 on which the cars 29 to be unloaded stand, and the length of the sweep-arms 10 is such that their free ends swing in an arc crossing the car.

The operation of the apparatus is as fol lows: A car of logs is pushed over the track when one of the sweep-arms 10 extends at an acute angle to the track, as shown by dotted lines in Fig. 2. The operator stands 'on one side of the track grasping the handle 27, and at some suitable point on the side of the log nearest to him he pushes the arm over and engages the points 26 with the log. As the car moves on the arm swings around, and the end which engages the log swings in an arc crossing the car so'that the logs are pushed off the car laterally, in a line approximately parallel to the track, and fall into the boom below. The forward movement of the car brings the next sweep-arm in position to unload the next car, and so on until the entire train of cars has been unloaded. When the sweeparm is at a right angle to the track it extends entirely across the car so that it clears the latter of any logs inclined to stick.

The apparatus affords absolute safety to the operator and it is rapid in operation. The vertical motion of the sweep-arms hereinbefore described allows the operator greater liberty of action in choosing the proper place of engagement with the log. The apparatus also prevents damage to the cars, the steady pushingmotion preventing the fall of the top logs on the edge of the car. By connecting the sweep-arms in pairs the vertical adjustment thereof to engage the log is rendered easy as the arm which is to be adjusted is balanced by its connection through the cable 17 with the diametrically opposite arm.

I claim:

1. An apparatus for unloading vehicles comprising a vertically adjustable horizontal sweep-arm engageable at its outer end with one side of the load, and mounted to swing in an are crossing the vehicle.

2'. An apparatus for unloading vehicles comprising a pivoted sweep having diametrically opposite horizontal arms mounted to swing in an are crossing the vehicle and successively engageable at theirouter ends with one side of the load.

3. An apparatus for unloading vehicles comprising horizontal sweep-arms engageable with the load on one side thereof and mounted to swing in an are crossing the vehicle, said arms being vertically adjustable and connected in diametrically opposite pairs to balance each other.

4. An apparatus for unloading vehicles comprising a post, a sweep pivotally suspended from the top of the post, said sweep having horizontal arms mounted to swing in an are crossing the vehicle, and said arms being loose to permit vertical adjustment at their free ends, pulleys mounted at the top of the post, and cables passing over said pulleys, and connecting diametrically opposite ones of the arms.

An apparatus for unloading vehicles comprising a post, a support pivotally mounted at the top of the post, horizontal sweep-arms fastened together and suspended from the aforesaid support, pulleys car ried by the support, and cables passing over said pulleys and connecting diametrically opposite ones of the arms.

6. An apparatus for unloading vehicles comprising a post, a support pivotally mounted at the top of the post, horizontal sweep-arms fastened together, suspension means connecting the inner ends of the arms to the support, and suspension means between the support and the outer ends of the arms.

7. An apparatus for unloading vehicles comprising a post, a support pivotally mounted at the top of the post, horizontal sweep-arms fastened together, suspension means connecting the inner ends of the arms to the support, pulleys carried by the support, and cables passing over said pulleys and connected to diametrically opposite ones of the arms at the outer ends thereof.

In testimony whereof I affix my signature in presence of two witnesses.

TIMOTHY HAYES DONOVAN.

Witnesses C. YV. REED, R. GERBER.

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

Washington, D. C.

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