US1800017A - Attachment for scales - Google Patents

Description

/ April 7, 1931.' F. B. HAMBLIN ET Al.

ATTACHMENT FOR SCALES Filed Sent. 22. 1927 Patented Apr. 7, 1931 UNITED STATES PATENT; OFFICE Fam B. HAMBLIN .um GEORGE n. nAMBLm, or CLEVELAND, omo

Arracmnmr ioa soms Application filed September 22, 1927. Serial No. 221,234.

This invention relates to attachments for scales, and consists in the novel construction hereinafter disclosed.

An object of the invention is to provide an attachment for beam scales, whereby Athe weighing operation is expedited, and which will directly indicate the correct balance or exact weight or over and underweight.

Another object' of the invention is to provide an indicatin mechanism which may be connected with e beam of a beam scale, whereby a direct reading of the beam balance may be taken, when load is placed on the scale.

lAdditional advantages of the invention will be apparent from the following detailed description thereof, taken in connection with the accompan g drawing in which Fig. 1 is a yrldlnt elevation, partially in section, of the mechanism.

Fig. 2 is a vertical sectional view throu h the mechanism.

In t e embodiment illustrated in the drawing the mechanism is shown connected to a beam 1 of a beam scale. The connection includes an arm 2 in the form of a rod that is vattached to the end of the beamk and extends outwardly therefrom. The arm 2 carries at its outer end a U-shaped bracket 3. The arm 2 extends through a slot 4 in a housing 5 so that its inner end car ing the bracket 3 is within the housin he housing 5 forms a casing for the in -eatingy mechanism and is jmounted on adjustable legs 6 so rthat it may be positioned on a support adjacent to the lbeam scale and leveled up to cooperate with `said scale. For this purpose the legs 6 are 8.V Within the lower part of the housing 5 there is a U-shaped bracket 10, the base of said bracket being supported by the bottom wall of the housing and the arms of said bracket extending upwardly in said housing and terminatin in bearing supports 11. Within the bearing supports 11 are set ball bearing members 12 in which a transverse shaft 13 is j ournaled at each end. The shaft 13 in enlarged at its central portion to form a drum 14. The extremity of the upper arm of the bracket 3 supports an adjustable screw rod 15, said rod 15 carrying an equaling lever 16 at its lower end with which it has pivot connection. Attached to each end of the equalizing lever is an adjustable eye 17 into each of which is fitted the end of a cord 18, said cords 18 extending around a portion of the circumference of the drum 14 and being attached thereto by s et screws 19, or in any other suitable manner. The lower extremity of the bracket 3 carries an adjustable screw rod 20, which, in turn, carries an equalizing lever 21. Each extremity of the lever 21 carries an adjustable screw eye 22, into each of which is connected a cord 23, said cords 23 extending partially around the circumference of the drum 14 in a direction opposite to the cords 18, said cords 23 being connected with the periphery of said drum by set screws 24, or in any other suitable manner. By reference to Fig. 2 of the drawing it will bey noted that the arrangement of the cords 18 and 23 is such that the cords 18 extend around the drum in one direction at a position on the drum outside of the cords 23, which extend in the opposite direction, this positioning of the cords being provided for by the difference in length of the levers 16 and 21. It will also be noted that, by the provision of the screw eyes 17 and 22, the pull on each of the cords 18 and 23 may be adjusted. While cords have been illustrated in the drawing, it is obvious that tape, springs or other connecting devices between the bracket 3 and the drum 14 may be substituted, if desired.

A pointer arm 25 is carried by the drum 14 near its inner end. The arm 25 extends upwardly and its extremity is formed as a pointer coordinating with one of the charts 9.l The said arm carries a branch extension Y26, said extension being formed of a rod that eXtends backwardly from the arm 25 and then upwardly to constitutea pointer ontheY 5 rear face of the indicatingchart. T he lower `end of the indicating arm 25 carries a counterweight` y27,- whichris :adj ustable for 'centering purposes by u providing settable `weight devices 28 adjustable in slots on either Vside ofV the center of` gravity of said counterweiglit.

In order"to"provi'de"for smoothnessofoperation of the indicating mechanismthemechanism is equipped with a dash-pot 'cbnst'ruc tion which includes a dashapotf cylinder-29 supported in the bottom of the housingand inwhich theretis a pis-ten 30,v said piston beinglpriovided `withran adjustable dash 31. The,pistonicarriesajpiston'rodBQthateXtends upwardly through VLa: packed 'opening' in the Q0 icoverBBofthecylinder. The-lowerextremity of-'thebrfacketfflias a'downwardly extending lug 134C which `is' connected with thev upfperendff the piston 'rod' 32lby=a1pivoted link Itgwill be :understood Ithat the Vpiston 30 :325 operates; in oi'l fand that-the adjustable Vdash 311l provides .meansforithe `adjustment of the Y flow/offoilfsoithatlgthe'speedjof operation of the "device `may be controll'ed.

It is Snow cle' 1r""that thel Abracket 3 is afloat- 1530 ing bracket and is not'mounted on any pivots -or other/supportslthan the 'scale beam l which operates said bracket, a=dashpotfdevicewhich lcontrols the-speedy of 'operation ofthe bracket, andthe-flexible connections '18 Iand :23 con- 53'5 nectinwthefbracketv withgthe drum Accordingly, fthe entirefbracke't $3 is #al-ways moved in-'fthe fsame direction in which the scalebeafmsnoves;V

' Fremft-h-e foregoingdescription, it will be understood that,V as thejbe'am'lfoscillatesfresponsi-ve tof-load, the l weightindication `is iaccomplished by they counterweig'hted pointer idevice, which Jmeves Iresponsive to theeXtent ro'f oscillation of the *bea-m as 4against :the

'45 counterlload offtliepull on thegcordslS and QSf-Qarried bythe-bracket 8. It is obvious :that :the disclosed mechanism may :be lreadily #appliedto -1any type of beam :scale andwthat `-itaifordsla directmeans of indicatingthe y v5D balancing-Ipoint'of'the'iscale,f As the'chart lisgraduated" in? both "directionsifrem the cenj `ter,{itprovides for'in'dicating over and under- 'weight, "lltalsofprovides means of determin- -i-ng the fsensitiveness -ofthe fscale.- ilt fis clear,

therefore,thatitaccomplishes adequatelythe 'l-purposesroftheinvention. Y We areaware thatftheinvention may be f modified `in S various *particulars without departureffr'om'fthe spirit andscope'thereof. Therefore, fwe do .not-"limit ourselves' ton-unessential `details lof construction, but what 'we K fclaim 1 ande desire to securelbyv Letters P atent l. Anf-'attachment for' f scales comprising a casing'fha-ving lslot'. :in i one sidefnthereoffa Y 1a beam scaleto'fbeopenatedthereby. Vv'-65 housing fmeans :for `-adj11sting :the 'elevation Vof said housing, a'rockable shaft supported within the housing, a drum carried by said shaft, a counterweighted indicating arm pivoted coaXially with the shaft, an oscillatin member adapted to be connected to the beam of the scale and to oscillate therewith, and iiexible connections between said member and the k.drum `'whereby the :indicating Adevice respondsin movement to the movement of the Y beam of thescale. j A, A Y l Y f2. An@attachmentffor'scalescomprising a housing, alrockable shafthaving ball bearing supports supported within the housing, a

drum carried by said shaft, a counterweighted indicating arm pivot'ed coaxially with the shaft, 1 .ani oscillating:,member adapted tobe connected .to thefbeam of thelscalesandate csf cillate therewith, and fieXibleconnect/ionsfbe tween said @member- Aand the` vdrum `*whereby the indicating. device responds in; movement to the movementofithe-beamozthe scale. 5

, V:3. `in attachment 'fforgscalesY comprising-ia housing-na rockable sha-ft :havng'fbalfl rbear.-

supports :supported `'withi'nfthe fhousing, -a drum -carried iby said =;sh'aft,a counterweig-hted indicating'. rpivotedgcoaxially with the shaft, `an 'oscillating-memberadaptfed.' to be connected to@ the, beam fofzthej scale and to oscllate therewith, flexible connections fbetween said fmember andthe drum 95 whereby the f'frndicatingfdevicexrespoifds in i'novement;` to :the i movement :of ithe i'beam ff the scale, land aa' i'dashs'potLaconstruction :for damping s the :movement-z of said oscillating member. v il. Adevice'of therchanacter describedcemprising a pivot element ambuntedfor trocking movements, an indicatin'gwarm attached fto .said pivotftelemen't for.: operation thereby, an indicating chart 1coordinated Vwithersaid varm, 1a bracket, sa. ipluralityizofiflexiblefcenf nections betweensaid bracket and ,saidrpiviot Y.element for rocking saidpivotzelementrinopfposite ydirections by @vertical movements #of :.said'ibrfacket,iandmeanszfor"connectingsaid bracket tofthe beam -of :a beamfscaleifor fop'- eration thereby andf always rinv "theffsamefdi- 'rection in "which V,their scalebeamoperates.

;5. An; `attachment for fiscales fcomprising "12315 pivot Y element fmoimted `ing said casing ifor .rocking f movements, an :indicating y:arm fiat# tached to saidl pivot elementfiirsaid-,casingfor op erationfby said fpivotf element, ian indicating chart coordinated "with said indicating I1120 arm, :a bracket 'inlsaidfgcasing, :afpluralityfof flexible connections `betwei-m :said Vbracket e and said pivot elementforsrocking saids pivotfelement in'opposite: directions'byiverticalimovements of said 4b'racketfrom andtto :a -`starting positonfand anarmfin connection' vfwithrsad bracket .andfproje'ctinglethrugh-.saidislotfin said casing `for connection .withf theibeamif -Y6. f-attachment@forscalescomprsingsa 130 casing having a slot in one side thereof a. pivot element mounted in said casing or rocking movements, an indicating arm attached to said yivot element in said casing for operation y said indicating arm, a bracket in said casing, a lurality of exible connections between said) bracket and said pivot element for rocking said pivot element 1n opposite directions by vertical movements of said bracket from and to a starting position, an arm in connection with said bracket and projecting through said slot in said casing for connection with the beam of a beam scale to be operated thereby, and means in connection wlth said bracket for controlling the speed of operation of said bracket by said actuating arm when said actuating arm is moved by the beam of a beam scale as aforesaid.

FRED B. HAMBLIN. GEORGE B. HAMBLIN.

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