US1411337A - Apparatus for lowering articles - Google Patents

Description

G. M. vFRENCH AND w. B. PAVEY. APPARATUS FOR LOWERING ARTICLES. APPLICATION FILED NOVfZO. ISIS.

Patented Apr. 4, 1922'.

3 SHEETS-SHEET l G. M. FRENCH AND w. B. PAVEY.

APPARATUS FOR L0 WER|NG ARTICLES. APPLICATION FIL'ED nov. 2o. 191s.

3 SHIIETS-SHEET 2.

Patented Apr. 4, 1922.

G. IVI. FRENCH AND W. B. PAVEY.

APPARATUS FOR LOWERING ARTICLES.

APPLlcAfoN FILED Nov. 20, 1918.

Patented Apr.' 4, 1922.

3 SHtEIS-/S/HEET 3- f @7,55 @65565 v' 1 jaag/0% @im fw UNITED sTATEs PATENT oFElcE.

' GfEoRGE II. FRENCH AND WILLIAM B. PAvEr, or CIIICAGO, ,ILLINoIs AssIGNoRs vro 'ECONOMY ENGINEERING COMPANY, or CHICAGO, ILLINoIs, A CORPORATION or ILLINOIS.

APPARArUs PoR LCWERING ARTICLES.

Specification of Letters Patent.

Patented Apr. 4, 11922.

l Application filed November 20, 1918. Serial No. 263,281.

To all whom 'it may cof/warn: Y

Be it known that we, GEORGE M. RENCH,

and WILLIAM B. PAVEY, citizens of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful .Improvements in Apparatus for Lowerin Articles, of which the following is a speci cation. The invention relates to an article lowering apparatus the general purpose of whichA is to facilitate the operation of removing articles from an'. elevated position, such as a work bench, to -a lower position, such as the floor at the side or end of the bench.

A more specific object of the invention is to yrovi'de a machine comprising a framework having a vertically movable support kand means of advantageous construction for controlling the movements ofthe support.

In the accompanyingy drawings, wherein we have illustrated a preferred form of our invention, Figure 1 is a side elevation of an apparatus embodying the features of our inventin. Fig. 2 is a front elevation of the same. Fig. 3 is a vertical sectional view taken on line 3-3 of Fig. 1. Fig. 4 is a fragmentary vertical sectional view taken on line 1 4 of Fig. 3. Fig. 5 is a fragmentary transverse sectional view taken on line 5-5 of Fig. 3. Fig. 6 is a fragmentary sectional view taken on line 6-6 of Fig. 2

The machine comprises generally a base 1 having an upright frame 2 for guiding a support 3 for vertical movement, an upright frame 4 for 'guiding acounterweight 5, a

pulley 6 for the support and counterweight walls o and d and a bottom ,and may be provided ,wthA suitable supporting legs f.

The base 1 and frame 2 may be of any preferred construction adapted to support and guide the movable support 3. The base is adapted to rest upon the floorof the building and preferably isnot secured thereto so that the apparatusisportable;y and the support vmay comprise an upright frame 8 having atits lower' end a pair of forwardly,extending arms 9 secured at lthe opposite sidesV thereof. At its upper and lower ends the frame 8 is also provided upon each side with guide rollers 1() arranged to operate in waysA 11 formed in the upright frame 2 (Fig. 5). The support 3 is thus movable vertically, beingguided in such movements by the upright `frame 2.

The guiding frame 4 for the counterweight 5 1s loeatedrearwardly of the guide frame 2 for the movable support, suitable `ways 12 being provided in the opposite sides of the frame fr guiding the' counterweight in its vertical movements. The counterweight may be Aof any preferred form;

Upon the upper end of the frame 2 the pulley. 6 is mounted. To this end a pair of lbearing brackets 1-3 and 14 are secured to thev frame so as to support-theopposite ends of a shaft 15 which carries the pulley. Said pulley comprises a Vpair of'grooved wheels 16 and 17 secured Vtogether and fixed upon the shaft. The wheels have secured thereto the upper ends of cables 18 and 19, as at 20 and 21, respectively, and the .cables are wound in opposite directionson their wheels. At its lower end the cable 18 is secured to a 'cross bar 22 of the: load support, and the cable 19at its lower end is fastened'to the counterweight 5. The wheel 17 may be made somewhat largerthan the wheel 16, and one of the wheels of the pulley, herein the wheel 16,` isV spiral eccentric in form so that its effective radius variesin the rotation ofthe pulley.- The cables are so Aarranged with reference to the pulley that when the receptacle b is in its lowermost position, the

.the cable 18 is unwound from its pulley 16 so that the effective radius thereof is of minimum length v(Fig. 6) and the cable 19 vis wound one or more times around its wheel 17. Thel counterweight 5 is of. sufficient mass to normally raise the empty receptacle from its lowermost` position into receiving position adjacent the end of the benchtop a, and when the receptacle -is in this position, the effective radius of thek wheel 16 is *substantially ofv maximum length, so that the counterbalancing effect of the counterweight is at its minimum. Accordingly, when articles are removedby a Workman from the bench top.` to the receptacle, it will be 'seen thatithe added weight of the articles upon the receptacle will overcome the tendency ofthe' counterwei'ght to raise the-receptacle', and when a sufficient weight.

quantity of articles has been placed upon the receptacle, it Vwill descend il" permitted to dou so.

comprises a brake disc 28 fixed on the shaftv 15, a brake band 24- anda hand lever r25.

Said lever is pivotedto a depending` portion of the bracket 14, as at 26 at or slightly above the operators head `within easy lreach when standing at the bench, and the opposite ends of the brake band are pivoted to the lever as at 27 and 28. A spring 29 connected at one end to the lever. and at its other end toan arm 30 on the frame 2 serves to actuate the lever to normally tighten the brake band upon the disc 23; and spring means 31 of ordinary construc- -tion is mounted upon an upstandingportion of the bracket 14 so as to withdraw the brake `band from lthe upper periphery of the disc Y when the lever25 is raised.

- brake mechanism is released.

In the operation of the machine, the empty lreceptacle Z) is brought to position with its bottom e adjacent the end of the bench top a, forV the convenience ofvthel operator in placing articles upon the receptacle, the receptacle beingv held in this position by the brake mechanism 7. When the pile of articles upon the receptacle has increased so as to make it desirable to lower the receptacle for the convenience of the operator, it is only vnecessary that he operate the brake mechanism by raising the llever 2,5, the -added weight of the articlesupon the receptacle being suicient to cause it to settle when the After the receptacle has descended su'liiciently to bring the topof thepile of articles thereon substantially to the plane of the bench top, the handle is released to permit the brake mechanism to prevent a further downward movement ofthe receptacle until. it is desired by the operator. As the pulley 6 rotates in the descent of the receptacle, the counterbalancing effect of the counterweight grad- -ually increasing so as to counterbalance the articles placed onthe receptacle owing tothe `fact-thatv the effective leverage ofthe cable 18. upon the pulley decreases during such descent of the receptacle;

When the receptacle finally reaches its lowermost position` it may be removed from its position upon the *supporting arms 9 and `a new receptacle iplacedthereon. ,brakemechanisin' r7, the vnew receptacle willV Thereupon, by releasing the be raised by the action of the counterweight until stopped by lthe application ofthe l brake, the counterweiglit being ofsufficient mass to slightly overbalaiice the receptacle when empty. v It will be observed that by the use of a -machine of the character set forth, the operation of removing articles from a work bench, or other similar operations, may be greatly facilitated. The construction of the machine is very simple and moreover Vthe machine is capable of quick andeasy` operation, requiring a minimum amount of attention from the operator. i 1

`We claim as our invention: "j 1. A work handling "apparatus comprising, incombination, a horizontal base, an upright frame mounted on the base, a support guided by the frame for up and' down'movement and having a pair of forwardly extending arms rigid therewith, a l,receptacle to be removably supported'upon said arms adapted to receive articles from anelevated position, andl means forfcontrollingA the movements of the supportk and the receptacle vcarried thereby comprising a counterweig'ht,

a pulley carried by the frame and-:oper-r atively associated with saidcounterweight andsaid support, and brake mechanism normally holding said support against" movement.

2. A vportable work handling kapparatus comprising, in combination, a ba se,'anv upright frame at one end of the base, a supportV Y v,

guided for vertical movement by said frame, a receptacle removably carriedl by said support and open at one side, ,and means for gradually lowering the receptacle from` an elevated position so as to position itffromy time'to time at convenient heights Ywith respect toV said elevated positionfor receiving additional articles by way of said open side said means comprising a pulley, a counterweight, and'm'eans adapted to control theVA operationof said counteiweight. e

3. An apparatus of the class described comprising, in 'combination with a bench top, a lowering apparatus comprising an upright frame positioned adjacent oneend of, said bench topV and rising above the plane thereof, a receptacle having an open side, a support guided for vertical movement by 'said frame and adapted to carry said receptacle with its open side adjacenty the bench top, andy means for controllingftheY movements of said support and thereby of said receptacle comprising a counterweiglit, a pulley carried by the Iframe and' oper'- ,atively 'associatedVV with saidY vsupport and counterweight, andv brake' mechanism no'ri mally holding said" pulleyagainst rotation. 4. An apparatusv of the` vclass described comprising, incombination` with a bench top,

a lowering apparatuscom'prising an' upright Afrankie positioned `adjacent one end-of said" bench top and rising above the plane thereof, a receptacle having an open side, a support guided for vertical movement by said frame and adapted to carry said receptacle with its open side adjacent the bench top,

and means for controlling the movements of said support and thereby of said receptacle comprising a connterweight, a ried by the frame and operatively associated with said support and counterweight,

and brake mechanismnormally holding said pulley against rotation, said brake mechanism including an operatingarm extending forwardly over Vthe bench top substantially to the forward edge thereof in convenient position to be graspedby an operator.

5. An apparatus of the character de-y scribed comprising, in combination, a base, an upright frame at one end of the base, a support guided for vertical movement by pulley carsaid frame, a receptacle for receiving articles from an adjacent elevation, vsaid support having a pair of forwardly extending arms rigid therewith upon which said receptacle is adapted to be mounted, and controlling weight increases as the receptacle support,

descends.

In testimony whereof we have hereunto set our hands.

GEORGE M. FRENCH. WM. B. PAvEY.

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