US1306349A - Dump controlling mechanism for trucks - Google Patents

Description

M s. L. Lowe.

DUMP CONTROLLING MECHANISM FOR TRUCKS.

APPLICATION FILED MAR.2 1917.

1,306,349. Patented'June 10,1919.

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S. L. LONG. DUMP CONTROLLING MECHANISM FOR TRUCKS.

. APPLICATION HLED MAR. 2.19M. 1,306,349.

Patented June 10, 1919.

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I I APPLICATION FILED MAR. 2,1911. 1,306,349.

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Specification of Letters Patent.

7 Application filed March 2, 1917. Serial N 0. 151,941.

{To all whom it may concern:

Be it known that I, SIDNEY L. Lone, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in- Dump- Controlling Mechanism for Trucks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has for its object to prov de an lmproved dump controlling mechanism for trucks and is especially designed for effecting the opening and closing move- Inents of the drop bottoms or doors of dirt or gravel trucks. In the drawings, theinvention is shown as applied to the drop. bottoms of a self-trailing truck of the type disclosed and claimed in Letters Patent ofthe United States, No. 1,202,651, granted of date October 2tth, 1916, to Adolph .W. Benson.

By this improved so-called dump controlling mechanism, the hinged drop bottom which is preferably made up ofa pair of leaf-like plates, may be raised with a ratchet-like action into closed positions, and there locked and held. The said drop bottom or leaves may be released and permitted to fall immediately into extreme open positions, or they may be lowered, step by step,

. With a ratchet-like action and locked or held in position, open to any desired extent,

In the accompanying drawings whlch illustrate the invention, like characters indicate like parts throughout the several views. p p

Referring to the drawings: H I Figure 1 is a side elevation showing my invention in its preferred form applied to a cart of the character above stated; Fig. 2 is a. transverse vertical section taken on the line 22 of Fig. 1;

Fig. 3 shows the dump controlling mechanismin side elevation, the parts of the cart being sectioned on the line 3 3 of Fig. 2.

Fig. 51 is a section taken on the llne 4-4 .of Fig. 5 and corresponding somewhat to Fig. 3, but illustrating different positions of certain of the parts; A I,

Fig. 5 is a horizontal section on the line 5-1 5 of Fig. 1, some parts being broken away; 1

shown, it comprises a framework front ends of these cables 18 the 'shank'of the head 24 Fig. 6 is a fragmentary view of the mechanism shown in Fig. 4, but with some parts broken away;

Fig. 7 is a view corresponding to Fig. 6, but illustrating different positions of the parts; and

Fig. 8 is a transverse section taken approximately on the line 88 of Fig. 6, some parts being broken away."

The truck may take various forms, but as 9, rear axle 10, rear wheels 11, centrally located front wheel 12, and a front wheel bracket 13, to which said front wheel is journaled. The'said front Wheel bracket 13 is .journaled to the front portion of the frame 9 for horizontal oscillatory steering movements and is provided with a short coupling bar 14.

The frame 9 carries a box 15 preferably of heavy sheet metal, and this box is provided with a drop bottom shown as made up ofia pair of drop doors 16 hinged at their outer edges to the sides of the frame 9, and at their inner edges, adapted to be closed against a divider bar 17 that extends centrally of the bottom ofthebox and is rigidly secured to the framework 9.

For directly operating the drop doors 16, cables, such as chains 18, are anchored at their rear ends to the back of the box 15, are passed through guide yokes 19 and under guide sheaves 20 carried by the free edge portions of the said drop doors. The are brought and attached journaled in upward at the front of the box to a Windlass shaft 21 that is end brackets 22 rigidly secured on the front plate of thebox 15. A ratchet wheel 23 is rigidly secured to the intermediate portion of the Windlass shaft 21, and of course, rotates therewith. For cooperation with this ratchet wheel 23, I provide two levers 24 and 25. The lever 24:, which is the main operating lever, is cated lower end 24; that ispivoted on the windlassshaft 21 and straddles the ratchet wheel 23. A dog 26 is intermediately pivoted to the'head 24 and is engageable with the teeth of the ratchet wheel 23. The rear end of thisdog 26 has a slot and stud connection 27, with the lower end of an actu ating rod 28 that works through a lug 29 on A coiledspring 30 that surrounds the lower end of the rod 28" and is compressed between the lug 29 provided with a bifur- Patented June 10, 1919.

dog 26 out of and the rear :end of the dog 26, exerts a force which normally yieldingly holds the engagement of the teeth of the ratchet wheel 23. At its upper end, the

dog actuating rod 28 is connected to a hand piece 31 that is pivotally connected to the upper end of the lever 24:. Mounted to slide on the lever 24c is an annular sleeve 32 that hasa'laterally projecting lock lug 33 that is engageable with either of two notches 3 1,

3 1, of a latch segment 35 that is rigidly secured to and projects forward from the front plate of the box 15. The intermediate portion of the and pin connection 36 with the pro]ect1ng lug of the lock sleeve 32, so that when the said rod is moved upward, the lug 33 will be raised out of engagement with the cooperating notch 34 or 345 as the case may be.

The lever 25 is pivotally connected by a pin-37 to a small bearing bracket 38 secured on the front plate of the box 15. The lower end of the said lever 25 has a bifurcated head 25 that is directly pivoted to the said lug 38 by the pin 37, and this pin 37 pivotally connects to the said head 25, a retaining dog 39, which, in addition to the function indicated, performs others which will hereinafter appear in the description of the operation. The lever 25 is adapted to be sprung laterally, and thereby engaged with or disengaged from lock notches 40 and 40 formed in a segmental lateral flange of the latch segment 35.

Operation.

When the lever 25 is engaged with the front notch 40, the upper portion of its bifurcated head 25 will engage the upper edge of the retaining dog 39, and thereby positively lock the said dog in full engagement with a tooth of'the ratchet wheel 23, as

shown in Fig. 3, and this, as is evident, will positively lock the Windlass shaft 21 against movement in either direction. this way, the drop doors 16 of the box can be positively locked in their closed positions so that there will be no danger of their being rattled or jarred open in traveling rough roads;

When said lever 25 is engaged with the rear notch 40", as, for example], shown in Fig. 7 its bifurcated head 25 will be so set that the retaining dog 39 will be free to rise "and. fall, thereby maintaining contact with the teeth of the ratchet wheel 23, while permitting the said ratchet wheeltobe rotated in the direction of the arrow marked thereon in Fig. 7 (which direction'of movement is that required to raise the drop doors from closed to open positions) by manipulation of the main lever 24 and its dog 26. When the hand piece 31 of the said lever 24: is pressed forward, or against the upper end of. said lever, it first, by moving the sleeve 32 up.-

actuating rod 28 has a slot 7 Hence, in

ward, -unlatches the said lever 2% from the Here, it is important tonote that when the 7 lever 24 is in the position shown in Fig. 3, at which time the lug 33 ofthe sleeve, 32 is engaged with notch 34? of latch segment 35,

the dog 26, which, bythe spring 30, is normally held out of engagement with the teeth of latch wheel 23, is, neverthelem, so posi-j tioned that its rear endwill'be engaged by the free end .of. the retaining dog '39, when the latter is raised by a rearward movement of lever 25.. Hence, when it isdesired to let the drop doors down by a step byjstep movement, or to drop the same only enough to permit a slow discharge of the dirt or gravel, or other material contained in the box, this can be accomplished by setting the said levers, first, as shown in Fig, 3, and then by moving the lever 25' from the position shown in said view, back to a position beyond notch 40, or to a position shown in Figs. 4 and 5'. ment of the retaining dog39, it is, itself, released from the pivotally engaged tooth of latch wheel 23 and byforcing upward the rear end of the dog 26, causes the frontflend thereof, to engage the upper surface against a tooth of the ratchet wheel 23, as. shown in Fig. i, and this permits the ratchet wheel, and hence, the Windlass shaft, to move approximately one tooth; When the steplof movement of the. ratchet wheel and Windlass r shaft 21 is intercepted by the dog 26,".the lever 25 is moved forwardto permit the retannng dog 39 to again engagethe tooth of Under this'upward move- I r the ratchet wheel and to permit the spring 7 30 to disengage the said dog-26' from its piv- 11 0 otally engaged ratchettooth. Thusby 0s cillating the lever 25 back and forth while lever 24 is set, as shown in Figs. .3 and a, the

drop doors 16 may be lowered 'tof any desired extent and then "stopped and ,held wherever desired, so that there will beat slow leakage or discharge ofthje: material from 1 the boX of the truck: This is highly im )ortant in doing certain kinds ofgrading work where it 1s desirable todistrib'ute the gravel "or dirt along the road under:forwardgnove ment of the truck;

The term gate is herein nsed in a broad sense to include any kind .of a device which,

when dropped or released, permits the (disa V charge .of the ,dirt or othermaterial from the box or carrying receptacle of the cart or vehicles .l 7

What I claim is:

1. An actuatin mechanism comprising a V Windlass having a ratchet wheel, a main lever having adog operative on said ratchet wheel, and another lever having. a dog nor mally operating as a retaining dog on said ratchet wheel, but operative, under movement of its lever, on the dog of said main lever, to release said ratchet wheel by a step by step escapement action.

2. An actuating mechanism comprising a Windlass having a ratchet wheel, a main lever having a yieldingly released dog and connection for rendering the same operative on said ratchet wheel, a retaining dog normally operative on said ratchet wheel and a lever operative to holdsaid retaining dog in an inoperative position, means. for looking said main leverinto a position in which its dog will be oscillated to and from operative position by oscillation of said retaining dog and its actuating lever.

3. An actuating mechanism comprising a Windlass having a ratchet wheel, a main lever having a yieldingly released dog and connection for rendering the same operative on said ratchet wheel, a retaining dog normally engageable with said ratchet wheel, a connection for releasing said retaining dog, a latch arch for said main lever, and a lock on said main lever normally engageable therewith but arranged to be released by movement of the actuating connection of the dog of said main lever.

4. An actuating mechanism comprising a Windlass having a ratchet wheel, a main lever having a normally released dog movable for operation on said ratchet wheel, and a second lever having a dog normally operative as a retaining dog on said ratchet wheel, the said main lever being movable into a position into which its dog may be subject to movements of said retaining dog, and the said retaining dog, under movements of said second lever, cooperating with the dog of said main lever to release said ratchet wheel by a step by step escapement action.

An actuating mechanism comprising a Windlass having a ratchet wheel, a main lever having a normally released dog movable for operation on said ratchet wheel, a second lever having a dog normally operative as a retaining dog on said ratchet wheel, the said main lever being movable into a position into which its dog may be subject to movements of said retaining dog, and the said retaining dog, under movements of said second lever, cooperating with the dog of said main lever to release said ratchet wheel by a step by step escapement action, a latch V arch for the said main lever and a lock on said'main lever coiiperating with said latch arch to hold said main lever in either of two positions, in one of which positions its dog will be subject to movements of said retaining dog, as above stated.

6. An actuating mechanism comprising a rotary member having a ratchet wheel, a main lever having a dog operating on said ratchet wheel, a retaining dog also operating on said ratchet wheel, and an operating connection for said retaining dog, having three positions, and operating in one position to lock said dog engaged with said ratchet wheel, and in a second position to release said dog for a ratcheting action under the operation of said main lever, and operative in a third position to hold said retaining dog positively out of action on said ratchet wheel.

7. An actuating mechanism comprising a Windlass having a ratchet wheel, a main lever having a normally released dog and connections for rendering the same operative on said ratchet wheel, at will, and a retaining dog cooperating with said ratchet wheel, and a second lever having a limited pivotal movement in respect to said retaining dog, and having three positions, being operative in one position to lock said retaining dog in engagement with said ratchet wheel, in a second position to release said retaining dog for a ratcheting action, and in a third position to positively hold said retaining dog out of action on said ratchet wheel.

8. An actuating mechanism comprising a Windlass having a ratchet wheel, a main lever having a normally released dog and connections for rendering the same operative on said ratchet wheel, at will, and a retaining dog cooperating with said ratchet wheel, and a second lever having a limited pivotal movement in respect to said retaining dog, and having three positions, being operative in one position to lock said retaining dog in engagement with said ratchet wheel, in a second position to release said retaining dog for a ratcheting action, and in a third position to positively hold saidretaining dog out of action on said ratchet wheel, and means for positively securing said latter lever in its said third position.

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

4 SIDNEY L. LONG. Witnesses:

CLARA DEMAREST,

BERNICE G. WHEELER.

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

. Washington, D. G.

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