US1787651A

US1787651A - Ensilage elevator for pit silos

Info

Publication number: US1787651A
Application number: US335131A
Authority: US
Inventors: Zwink Frank
Original assignee: Individual
Current assignee: Individual
Priority date: 1929-01-25
Filing date: 1929-01-25
Publication date: 1931-01-06
Anticipated expiration: 1948-01-06

Description

Jan. 6, 1931. gwm 1,787,651

ENSILAGE ELEVATOR FOR PIT sIL'ds Filed Jan. 25,, 1929 2 Shuts-Sheet 1 Jan. 6, 1931. F. ZWINK 1,787,651

ENSILAGE EuJvA'rbn FOR PIT sn-ds Filed Jan. 25. 1929 2Shoots-Sheot 2 ,flttomoqo.

FRANK lzwnvx, or LOUP. CITY, irniaarl'ss'a nnsrrzaes ELEVATOR r03. m sILos' Application fiIed Jamaal- 25, 1929.: Serial No. 335,131.'

This invention aims to provide a simple means whereby a person can lower himself into a pit and then hoist material out of the pit through the instrumentality of a counterweight, the device being capable of use in pit silos, and for many other purposes. The device embodies a flexible element provided at one end with a receptacle and at the other end with a counter-weight, the flexible element being intermediately guided, and one object of the invention is to provide novel means to put a braking pressure on the fiexible element at the will of an operator.

It is within the province of the disclosure to improve generally and to enhance the utilceeds, the invention resides in the combinaity of devices of that type to which the invention appertains. a

With the above and other objects in view, which will appear as the description protion and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that, within the scope ofwhat is claimed, changes in the precise embodiment of the invention shown can bemade without departing from the spirit of the invention.

In the accompanying drawings Figure 1 shows in elevation a device constructed in accordance with the invention,

parts being broken away;

Figure 2 is a top plan;

Figure 3 is a transverse section showing the grip or braking lever in elevation;

Figure 1 is a perspective view of the fixed jaw.

In carrying out the invention, there is provided a support which may be in the form of a pair of parallel beams 1 extended across the top of a pit silo (not shown). The device comprises a guiding means, such as sheaves 2 and 3, spaced apart, the sheaves being located between the beams 1 and being supported at 4 for rotation on the beams.

The numeral 5 designates a block which is secured at (ibetween the beams 1, the block being disposed between the sheaves 2 and 3. The block 5 is supplied at its ends with concavities 7,. and between these concavities the block 5 is supplied in'its upper edge with a depressed seat 8. The block 5 may be alluded to as afixed jaw, an appelation which will be understoodbetter after the operation of the device has been described. y A flexibleelement 9 is, looped over the sheaves 2 and3 and slides alongthe concavedsurfaces 7 of the block 5,}the flexible element 9 having depending ends to one of whicha receptacle 10issecure'd, a counterweight 11 being secured to the other end of the fiexible'element. i v

A" means is provided whereby the *recep-' tacle-10f will be prevented from spinning around-ona vertical axis, and this means includes a flexible line 14: connected at its ends tothe receptacle 10 and to the counter weight .11, the intermediate :portion of the line passingslidably over a pulley 12'sup ported for rotation on one of the beams 1.

i- ;Figures2' and -3 make it evident that a. pair of upstandingfulcrum.bars 15 are secured t oone oflthe beams 1,-a pair' ofupstanding-guide bars 16 being secured to the ther of thebeams. The numeral 17 'marks a grip-.lever disposed at right angles to'the beams l'and'above the seat 8 in the block 5. The grip lever, 17 is mounted to swing ona bolt .18 or the like that is carried by the fillcrum-bars 15. The grip lever. 17 can swing up and down between the guide bars16. In. its lower edge, the grip lever 17 has a notch 19 located above the intermediate part of the flexible element 9. t 1. r .An actuating weight moves lengthwise of thegriplever 17. If desired, the grip lever 17 may be a trough, and the actuating weight 20 may be a disk" or ball mounted to roll in thetrough-shaped grip'lever.

The rolling element 20 is held in the grip lever 17 by means of aretaining strip 21 that extends lengthwise of the lever, the ends .of the strip 21fbeing secured to theends of the leverMAt a'point between its ends, the 'strip21 is attached to an inverted U-shaped bracket 22, the depending arms of which are connected tojthe sides of the lever 17/ The means Ior tilting the lever 17 on its fulcrum 18 may comprise a pair ofdepending hand lines 23 connected to the lever at its ends.

The'operator gets'into the receptacle 10 and sinks slowly into the pit, the counter- Weight 11 rising. A braking pressure can be put on the intermediate part of the flexible velement 9, if desired, by tilting the lever 17 through the instrumentality of one of the hand lines 23. v The weight will roll to the left hand'end of. the trough or lever17'in Figure 3,and cause the lever to bear :on the flexibleelement 9: but when the weight 20 is at the right hand endgof the part 17, as

"shown in solid line in Figure 3, then the weight acts to keep the lever 17 tiltedclear of the line 9 so that the line can run freely.

After the operator. gets tovthebottom of the pit or far enough down into the pit so tilted and the weight 20rollsto the left in characterized by the provision of a fixed jaw mounted on the support beneath the flexible element and the lever, the fixed jaw being provided with a depressed seat into which the lever presses the flexible element when the lever is tilted in one direction.

3. A device of the class described, conthat he'can'load the ensilage, the lever 17 is s 1 Figure 3'to cause the lever to grip the flexible element 9 and force it down into the seat 8 of the block-or jaw 5. The receptacle 1O is is tilted back into the position of Figure 3 7' will be notedfthat the fulcrum equally distanced from the endsof the lever where it will stay when the weight 20' rolls to the right hand end of the lever. The receptacle 10 with its loadrises'under the action of the counter-weight 11'. ''When the receptacle 10 is at the top of the pit,'the' operator can tilt the "lever the flexible element 9 and hold the receptacle =10 whilst the ensilage is being shoveled or dumped out of the receptacle. The operator does not ride out of the pit, but climbs out after he has loaded the receptaclelO.

Referring to Figure 3 ofthe drawings, it bolt 18 is not 17'.' This is doneso that one arm of the lever 17 so that it will grip loaded with the ensilag'e, and then the lever canwbeconsiderablylonger than the other 7 and make the vweight 20 correspondingly effective as a means'for swinging the longer part of thelever down and causing it to bind strongly on the intermediate partofthe flex- I ible element 9, much more force, of course, v being required tohold thelever in braking position with respect to the flexible element 9' than is required simply to hold the lever out of engagement with the flexible element.

What is claimed is 1. In a device of the class described, a'support, aiguiding means on the support,-a flexible element looped over the guiding means and having depending ends, a receptacle on one end of the'flexible element, a counterweight on the opposite end of the flexible element, a lever fulcrumed on the support'and extended above the intermediate portion of the flexible element, an actuating weight movable along the lever',-and means for tilting, the lever,v thereby to cause the flexible element to. move longitudinallyof the lever and to hold the lever in and out of engagement with the intermediate portion of the flexible element.

21A device of the class described, iconstructed as;set ;fortli'fin claim 1,-and further