USRE13995E - Xst available cop - Google Patents

Description

BEST AVAILABLE COP SCALE APPLICATION FILED SEPT. 9. I907.

Reissued Oct. 19, 1915.

I INVENTOK. Frank P. Duiim.

WITNESSES. WM! (7% ATTORNEY.

aEs r AVAILABLE COP. I UNITED s ATEs P NT orn on.

[FRANK P. DUNN, or ANnEnsoN, INDIANA, AsSIGNbR, nY 'MESNE ASSIGNMENTS, To THE coMrUTINe scALE COMPANY, or DAYTON, OHIO, A CORPORATION.

SCALE.

13,995, Specification of Reissued Lettersflatent. Reissued Oct, 19,1915,

Original No. 856,998. dated June 11, 1907, Serial No. 344.015. Application for reissue filed September 9,

1907. Serial No. 392,078.

To nil 071.0? it may; concern: and thecasing and dash-pot in vertical cen- 55 Be it known that I, FRANK P. DUNN, a tral section, showing the scale at zero. Fig.

citizen of the United States, residing at 2 isa perspective view of what is shown in Anderson, in the county of Madison and Fig. 1 with the tare" beam broken away,and 5 Stateof Indiana, have invented certain new with a seventeen pound package on the platanduseful Improvements in Scales, of which form, and the parts of the scale at their 60 the following is a specification. proper positions for weighing seventeen The object of my invention is to produce pounds. Fig-3 is a section on the line 3-3 an autonmtically operating scale in which of Fig 2, showing the'parts in perspective the parts come to balance under different and ,parts'broken away and the dash-pot loads by reason of the automatic movement omitted. U of a weight varying in its effect upon the In the drawingslO indicates a suitable scale beam inversely as the load is applied. base having a casing 25 and a fulcrum stand- To that end the scale beam is preferably fulard- 11 provided with suitable knife edges 12 crumedbetween its ends and carries a load upon which the main beam 13 is fulcrumed,

receiving member on one end and a norsaid main beam carrying the load receiving 70 maliy oveibalancing weight acts constantly platform 14 on its shorter arm. The, beam and uniformly upon the other end of said 13 near its inner end is weighted at 15 so'as beam so as to weight said end of the beam to overbalance the load receiving end. normally in a downward position and hold Upon uprights 50 by suitable knife edges the load receiving member normally in an above the inner end of the beam 13, there is 75 upward position, and combined with the a shaft. 16 which carries an indicator 17 foregoing there is a variable weight which adapted; to traverse the usual graduated acts upon the beam in opposition to the chart or computing scale 18. The shaft/16 weighted end thereof and in concert with also arries an arm 19 which normally inthe load receiving member and the load, clir'lesidownwardly and this arm is'connected 80 and under the influence of an applied load with the weighted end of the beam 13 by varies its influence upon the beam, the force in ans of a link 20, suitable knife edge coni thereofdiminishing with the increase of the ne tions being made between the link, beam load, andit is preferably so arranged that 13,-anl arm 19, in a well known manner. EX-

. its movements are in substantially t e same v tending'froin shaft 16 in opposition to the 85 directions as the movements of the load re arm 19 there is an arm 21 which carriespn ceiving member. a adjustable balance weight 22 and which con- In carrying out my said invention, another i stitjutes av pendulum weight. The normal feature thereof consistsin providing position of the arni21'is swung from the variable weight in the form of weighted vertical, so that weight 22 is normally in an 90" pendulum which is connected with the beami unstable position, having a continuous tendin such manner that under the influence of ency. to fall or move to a vertical position. an applied. load. it tends to move toward a Weight 22 and the weighted end 15 of the vertical. position and thus diminish its effect 7 beam 13 are So proportioned that, with the on the beam as the load increases. parts in the positions shown in the draw- 95 Another feature of. the invention is in .ing, 'a weight of, sayten pounds, upon the combining said pendulum weight withan platform 14 is necessary to bring the beam," indicator so that the indicator will be actuto balance at the limit of its weighing movei f ated by the pendulum weight whenand to ment, with the weight 22 inits. vertical and the extent that it is permitted by the movemost stable position, that indirectly beneath-10b ment of the beam as the-load is applied. the shaft 16. The weight 15 also bears Such I do not wish to limit my invention to the -relationto weight 22 that when said weight details of construction, and the general na- -22is in its maximum position, and, therefore ture thereof will be understood from-the acexerting its maximum turning force upon companying drawings and the following desaid shaft and its maximum lift upon the 105 scription and claims. beam 13, the scale viill'be in balance with In the drawings, Figure 1 is a' 'sideelevathe indicator 17 at zero or the initial end of Hon of said scale with a part broken away thecomputing scale.

SEST AVAlLABLE COP.

pendulum weight descends until it reaches:

- a position where its effective. lift upon the opening so as to lie acrossthe by-pass to,

scale beam has decreased a suiiicient amount to bring the parts to a balance. .It-will be noticed, therefore, that the pendulum weight g 22 i's'iiiitially in a posit-ion to move'in a direction affecting the scale beam in the same way that the applied load aii'ects the scale beam and to cotiperate with. the load so that as the applied load atl'ects the scale beam, the pendulum weight gradually decreases in effect upon the scale beam until the parts come to a balance. fore, causes or permits a movement of'the pendulum weight in the direction in which gravity continually tends to move it. The scale is, therefore, exceedingly sensitive.

Inorder to check oscillations of the indi cator arm, I provide a novel dash-pot for the scale beam, The dashepot consists of the main cylindrical chamber 30 in which is reciprocably mounted a piston 31 hung from the scale; beam 13. The upper and lower ends of the dash-pot 30 are connected by a passage, 32 in which is mounted a valve .33 which serves to adjust the by-pass opening and thus control the flow of fluid from one side of the piston to the other. A convenient form of'valve is that shown in'the drawing Where the valve, stem is threaded into the'casing but at its inner end is formed into a flat plate which, by a quarter turnof the screw, may be turned from maximum entirely close the same.

As is usual with scales of this character, the beam 13 may be provided with'fa suitable tare beam 40- having a proper tare weight 41 adjustable thereon. i

In theactual operation of this scale it is observed that the. indicator may be actuated ex'clusively by the pendulum, as its tendency is to actuate the indicator, while the tendency of the weighted end of the scale beam is to prevent the actuation of the indicator, although with a connection of the sort shown herein, the upward movement of the weighted end of the scale beam under the influence of an applied load, will moveand actuate the indicator, Also, the weight on the end of the'beam is per se constant while the influence of the pendulumweight is variable; But since the pendulum weight tends to reduce the effect of the weighted end of the beam on the action of the beam to a vary ing degree according to the extent of movement of the pendulum weight, the weight on the end of the beam and the Weighted pendulum may be considered as a single weight influence-equal to the weight on the beam minus the effect of the pendulum The added load there weightwhich diminishes in proportion to the increaseof the load and thus-enables the load to raise the weighted" end of the beam and cause .it to actuate or-permit the actuating-movement by the pendulum of the indi- 'cator in proportion to the weight of the load;

I claim as my invention 1. A weighmg scale includmga scale beam, a load receiving member carried thereby, a weight, a connection between said Weight and scale beam whereby said weight acts upon said beam with a t'orce varying inversely with the variations of the load,

stationary meansindependent of the beam for'carrying said weight, and means for indlcating the effect of an applied load.

2. A weighing scale including a scale 7 beam fulcrumed between its ends and adapted to receive a load at one end thereof and the other end normally overweighted, a

weight, a connection between said weight and scale beam whereby said weight acts upon said beam with a force that varies inversely with the ,vari'ation of the load, stationary means independent of the beam tor carrying said weight, and means for indicatingthe effect of an applied load.

3. In a scale, the combination with a scale beam, a load receiving member carried there'- by, and means for indicating the efiect' of an applied load, of a weight'rigidly connected with the indicating means and which tends to move the indicating means from zero.

' 4. In a scale, the combination of an oscillatory indicator, a pendulum weight rigidly connected therewith for giving the same a forward movement and which is in a raised position -When the indicator is at zero, a load influenced beam, and a connection between said weight and beam whereby 'meansindependentof the fbeam for supporting said pendulum weight, and a connection between said pendulum weight and the weight on said beam.

6. A weighing scale including" a scale beam fulcrumed between its ends and adapta raised position ed to receive a load at one end thereof and the other end'weighted so that said latter end of the beam will be normally depressed, an oscillatory indicator actuated by said pendulum weight, stationary means independent of the beam for supporting said pendulum weight and indicator, and a connection between said pendulum weight and indicator and the weighted end of thebeam.

AVAlLABLE COP 7. In a scale, an oscillatory indicator in indicating bar whicheluding an oscillatory at. zero is. to the left of a vertical line through its fulcrum. a pendulun'i weight ses cured thereto near its fulcrum and projectii therefrom to the. other (side o'l said vertical line when the indicator is at zero, and a load .ifiucnccd means for holding said in dicator at the Zero position. and as the load increases permitting said weight. to actuate the indicator with a force varying inversely with tie load. I y

H. i weighing scale including. a housin a'beam lulcriuned between its ends with one end projecting into the housing. a load receiving member carried the beam and the. inner end of the. beam he- "mgweighted so as to normally overlmlance the load receiving member; an indicating chart mounted in the housing, an indicator mounted in the housing and movable across said chart, a connection in the housing vbetween the indicator and. the weighted end of the lever and a variably weighted m ans in the housing: and

frame. and indicator for controlling the ac tion of the indicator as the load is applied.

9. in a scale, the combination with a pivoted beam adapted to receive a load on one 39 end and having-a normally weighted'opposite end to oppose an applied load. of .a

rock shalt, an arm carried by said shaft and connected to thcscale beam, an arm carried by said shaft in a normally raised position,

5 a weight on said arm to act upon the scale beam. in the. direction oi the applied load,

an indicator scale, and an arm carried by the rock shaft and traversing the scale.

, 10. In a scale, the combination-with a piv- 40 o'ted beam adapted to receive a load on one" end and l'iaving a normally weighted oppoend to oppose an applied load, of .a

weight. normallv in. a raised position, a con- .nection between said weight and the scale beam whereby said weight will act upon the scale. beam in the direction of the applied load with a variable force as the weight approai'zl'ies or edes-tro'in its normal position; a dash not having! a passage forming a condeetion between its ends. a rotatable valve. mounted in said passage and havinga pi'u'tion adapted to lie parallel with the passage. or transversely a piston mounted in the. dash pot and con- I ncctcd with the scale beam. v ll. in a scale, the combination with a pivoted beam adapted to receive av load on one end and having: a normally weighted opposite end to oppose an applied load, of

l weight normally in a raised position, a connection between said weightand the scale bcam whereby said weight will act upon the scale berm-in the direction of the applied load with variable force diminishing as the weight approaches a lower position, a

connection between said on the outer end of' connected with said across the same, and

dash pot having a passage fornr'rng a connection between. its ends, mounted in said passage and having a portion adapted to lie parallel with the passage or transversely across the same, and a pis-' ton mounted in the dash pot and'connected with the scale beam.

1'2; In a scale, the combination with a pivoted beam adapted to receive a load on one 'end. and having a normally weighted oppositeend to oppose an applied load, of a weight normally in a raised position, a weight and the scale beam w iereby said weight will act. upon the scale beam inthe' direction of applied load with -a variable 'foire,as the weight apiroaclies a lower-p03 In; an indicator scale, an indicator connected-with the scale beam to m'o've therewith andftraverse the scale, a dash pot having a passageforming a connection between its ends, a rotatable valve mounted in said passage and having a portion adapted-to lie parallel with the passage or tra'nsvensbly across the. same, and a piston mounted in the. dash pot and connected with the scale beam.

13. In a scale, the. combination with a pivoted beam adapted to 5 eteive a load on one end and having a n rmally weighted opposite end to oppose an. applied load, of a rock shaft, an-arm carried by said shaft and connected to the scalebea n, an ,arm carried by said shaft in a normally raised position, a weight on said arm to act upon the scale beam inthe direction of the applied load, a forming a connection tatable valve 'mountedpin said passage and having a port-ion adapted to lie. parallel with the passage or transversely across the same, and a piston inountcdi'n the dash pot and connected Witli'the scale beam.

1+. In a scale, the c'ombination with a pivoted beam adapted to'receive a load on,

zone. end and having a normally weighted opposite endto-opposo an applied load, of a rock shaft, an arm carried by said shaft and connected to the. scale beam, an arm carried by said. shaft. in a normally raised position, a weight on said arm to act upon the scale beam in the direction of the ap-.

. plied load, an indicator scale, an arm carried by the rock shaft and traversing, the scale, a dash pot having a "passage forming a connection between its ends, a rotatable valve. mounted in said passage and having a.

a netatable valve dash pot. having apassage between. 1ts ends, a r0-- portion adapted to lie parallel or transverscl 1 across the same, and a piston mounted in the dash pot and connected with the scale beam.

15. In a' scale, the. combination with a pivoted beam adapted to receive a load onone. end and having: a normally weighted opposite end to oppose an applied load, of a rotative indicator support, an indicator, 3,

" and BEST AVAlLABLE COP 'scale traversed by said indicator, a conthe scale beam,

nection between the indicator support and an arm carried by said indicator support in a normally raised position, a weight on said arm to act upon the scale beam in the direction of the applied load,

means connected to said scale connected to one of the structure to regulate the vibration of the beam.

- 16. In weighing scales, the combinationof a beam fulcrumed intermediate its ends,

a'goods receiver carried by v the beam on one side of the latters fulcrum, a pendulum, fixed bearings from. which the latter is wholly suspended, and a-connection bee and thebcam' on the tween the pendulum side of the latters fulcrum opposite that I and aconnection with and secured Where the goods receiver is located, the beam 'p'reponderating in weight on .the side where the pendulum is connected, normally holding the latter and the goods receiver elevated, the pendulum being adapted to descend with the applied load until equi-- librlu-m is attained. v t 17. ,In Weighing scales, the combination of a beam fulcrumed intermediate its ends ponderating in weight normally elevatingand having ashort arm on one side of the fulcrum and a long arm on the other side of the fulcrum, a goods receiver supported by' a pendulum, fixed bearings latter is wholly suspended, between the pendulum and arm of the beam such arm prethe short arm, from which the the long the pendulum and the goods receiver, the pendulum being adapted todescend with the applied load until equilibrium is at tamed.

18. Ill-weighing scales, the combination of a beam fulcrumed intermediate its ends,

1 a goods receiver carried by the .beam on one Qside of the latters fulcrum, a pendulum,

"wholly suspended, afixed table of weights,

of a beam fulcrumedintermdiate its ends and having a short arm on one side of the fulcrum and a long arm on the other side of the fulcrum, a goods receiver supported by the short arm, a penduluimfixed bearings from which the latter is wholly suspended, a fixedplate bearing a table of weights, an index associated therewith receiver, the descend with movable parts of said vand the goods adapted to descend with the applied load,

journal and from jlibrium is attained.

the pendulum isconnected. the latter and the goods the pendulum being and secured tothe pendulum, and a connection between the pendulum and the long arm of the beam, such a-rm preponderating in weight, normally elevating the pendulum and the pendulum being adapted to the applied load until equilibrium is attained.

20. In weighing scales, of a beam fulcrumed a goods receiver carriedby the beam on one goods the combination I intermediate its ends,

side of the latters fulcrum, a pendulum and I ournal with acrank arm, fixed bearlngs for said journal from which the pendulum is wholly suspended, and a link connecting said cra nk arm with the beam on the side of the latters fulcrum opposite that where the goods receiver is mounted, the beam prepondrating in weight on the side Where the link is con nected and normally elevating the peildulum receiver, the pendulum. being until equilibrium is attained.

'21.. In weighing scales the combination of a beain'fulcrumed intermediate its ends and having a short arm on one side of the fulcrum and along arm on the other side ofthe fulcrum, by the short arm, with a crank arm,

a pendulum and ;j ournal fixed bearings for said whichflthe pendulum is wholly suspended, said crank arm with the long arm of the normally elevating goods'receiver, the pendulum beingadapted to descend with the and a link connecting applied load until equig a goods receiver supported 1 beam, such arm p'reponderating in Weight. I

the pendulum and the 22. In weighing scales, the combination of abeam fulcrumed intermediate its ends, a goods receiver carried by the beam on one side of the latters fulcrum, a pendulum and journal with a crank arm, fixed bearings for said journal, a fixedplate bearing a table of weights, and secured. to the pendulum, and a'link. connecting said crank arm with the beamon the side of the latters fulcrum opposite that where the goods receiver is mounted,'the beam preponderating in weight on the side where the link is connected. normally elevating the pendulum and the 4, ceiver, the pendulum being adapted to descend with the applied load until equi-.

librium is attained.

.23. In weighmg scales, the comblnat on a beam fulcrumed intermediate its ends an index .associated therewith and having a 'short'arm on one side of the fulcrum and a long arm on the other side of the fulcrum, a goods receiver-supported by the short arm, a pendulum and journal w th a crank arm, fixed bearings for said journal from which the pendulum is wholly sus;

pended, a fixed plate bearing a table of weights, secured to the pendulum, and a link connectan index associated therewith and i 13c! goods reees'r AVAILABLE ing said crank arm-ewith the long arm-of beam preponderating I being adapted to the beam, such arm p. eponderating in weight and normally elevating the pendulum and the goods receiver, the pendulum being adapted to descend with the applied load until equilibrium is attained.

24. In a weighing scale, the combination with a main beam or lever, a goods receiver carried thereby to one side of its pivot or fulcrum, a counter-balance member comprising a pendulum and its journal, and a positively operating connection attached to said member eccentrically with respect to its journal, and applied to the beam on the "side of the latters pivot or fulcrum opposite that where the goods receiver is located, the beam on such side preponderating in weight to normally uphold the goods re-- the pendulum through the positive connection aforesaid and the pendulum being adapted to descend with the applied load until equilibrium is attained. v

25. In a weighing scale, the combination with a main beam or lever, a goods receiver carried thereby to one side of its pivot or fulcrum, a pendulum and its journal, the latter having a crank pin in the form of an upwardly directed knife edge bearing, and f a link engaging over such knife edge bearing and being connected to the beam on the" side of the latters fulcrum opposite that where the goods receiver islocated, the in Weight on thatside and normally elevating the pendulum by down draft on the said link, the pendulum descend with the applied load until equilibrium is attained v- 26; In a weighing scale, the combination with a main beam or lever, a goods receiver carried thereby'to one side of the pivot or fulcrum, a *Bounter-balance member comwith a main beam or my hand seal at Anderson,

prising a pendulum and its journal, a positively operating connection attached to said member 'eccentrically with respect to its journal and applied to the beam on the side of the latters pivot or fulcrum opposite that where the goods receiver is located, the,

beam on such side preponderating in Weight to normally uphold the goods receiver-and normally elevate the pendulum through the positive connection aforesaid, and indicatingmeans comprising a tlxedxmember and a member operatively connected to the pendulum, the pendulum beingadapted to descend with the applied load until equilibrium is attained.

27. In a weighing scale, the combination lever, a goods receiver carried thereby to one side of its pivot or fulcrum, prising a pendulum and its journal, a positively operating connection attached to said member eccentrically with journal and applied to of the latterspivot or Where the goods receiver is located, the beam a counter-balance member comrespect to its the beam on the side: fulcrum opposite that on such side preponderating in Weight to hand extending adjacent the same and se cured to the pendulum,'the pendulum being adapted to descend with the applied load until equilibrium is attained. In witness whereof, I have hereunto set I Indiana, this 14th of A ugushRA. D; one thousand. nine hundred and seven,

' FRANK \Vitness%s': A

B.- EMANUEL,

P; Drum.

receiver and

Images