US79583A - lyman - Google Patents

Description

SCALE.

.Patented July 7, 1868.

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C; (lV-LY'MAAN, OF-EDIN-BOBO, PENNSYLYANI..

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IMPROVEMENT-nr soms.

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To ALL AWH'OM- 1T MAY concurrir:v

" Be it lrnown that l, C. O. LYMAN, of Edinboro, in the countyofErie, and State of Pennsylvania, have invented certain new and-useful Improvements in Scales; and I do hereby-declare that the following is a full and complet'e description ofthe same, reference being had to the accompanying drawings, making a'pa'rt of this specification, inwhich- Figure 1 is a top view of the scale.

Figure 2 is aside view.

Figure 3 is an end view. p

Like letters of reference refer to like parts in the views.v l v Injig. 2, A represents va frame or beam-house erected'near to therailr-oadltrack B,',ig.'1. From a crossbeam, C, is suspended the'scalebeam D,'from the short arm of which depends the scale-platform E,'provided with a section of rails forming y. part of the track. I

Between the cheeks' of thellongitudinal beams F, 4g. 1, is journalled a. ratchet-toothed wheel,"G,' iig. 2, on which'is inscribed a numeral index`,'to`which reference will hereafter bemade.v

-BI is also a ratchet-wheel, journallsnll between'the oh'ee'ks bf'the beams in likemanner as th wheel "G.

I is a lug-wheel, so 'onrnalledlin the beamsas to engage with the wheel G by means of lugs-aprojecting from the face of a drum, secured to thepside of said wheel H. 'ihis lug-wheel is also inscribed with a numeri? c'al scale, to which reference-will bemade.

. is pivoted.

vup andengages in the teeth of the wheelGl' J, lig.- 2, is a jointed lifting-shaft, the' lower section of which, J", penetrates loosely the platform-K.

L L are counterbalance-w'eights, through which the shaft loosely passes.

M arebrackets by whiehsaid 'weights are supportedl and held in the position separately from each other, as shown i'n the drawing, when'in't in`imn`1ediate use. The purpose o f th'epweights will .hereafter be shown.

The upper'seetion of the shaft isl provided with a slot, through which thescale-beam D passes, and in which it` d', iig. 2,- is 'a yokeot loop,A thovends pf which are pivoted in the sides of the shaft, whereas thebow reaches The block-Nreferred to, is attached loosely to the' -shaft by the keyc, fixfed in 1sai'dshaft, and projected through the-bloeit, a slot bein'g made in theblock'for its admission. .The said slot being made much longer than .the width of the key,lallows the'key to play :incertain distance-in the -bloei: before reaching the 1 1pper end of the slot, whereby the block -and'loop are lifted npwardfas und for a purpose hereafter shown. O'is a stay, hyrwhich the upper end yof the shaft isi guided and secured in position. l

- lho pnrposeof `this machine is for weighingl one-hnlf ofeach cur of a train separately on a short platform while in motion, and registering the same automatically,wherebythe entire weight of the train Ais obtained, thus -avoiding the necessity'of stopping the tra-in for that purpose, and which is accomplished as follows:

As above said,` the scale-platform B- forms a part of thetrack. -The length of this platform is such as to receive one s'et of tfhe front or the hind wheels of th'e cars at ence only; thus while the front wheelsare onthe platform, the hind wheels will not befand when the'front wheels have passed over and o` from the platform on to the track, thehind wheels will be on' the platform. It willlie obvious that by this, one-half only ofthe ear. und load will be weighed at once in its passngeacross the platform.l

Pre'suming that each car contains twentytons, now, as onedialf only of this is to be weighed at once, the poise P on the pendulum must be adjusted to that particular weight, ten tons. As -the front wheels o f the oar-- roll upon the platform, the scale-beam is thrown up, in consequence of the weight of thecar. The beam will carry up with it the shaft J, which, as above said,`is pivoted to the bean. As the shaft 4is raised upward', the 'yoke ais`also carried upjust far enoughlfrorn a lower tooth to onenext above, and hooks uponit. Immediately that the wheels roll o' the platform, the hea'm'descends; drawingdown with it the shaft J and yoke, which, as n oonseqnence, will turn the index-wheelG around one tooth or notch, fronil to 2, thereby indicating ten tons iin connection with the wheel H, and thereby any number ol' cars be registered. i fall some short of the presumed twenty tons, for which the balance had been adjusted, the loops a will still be raised to the required height to catch the proper notch for turning ,the index-wheel G, if the deficiency be not e too great, asvit is not intended to weigh to a. very as'one-halfof .the load. The rear end of the car, as it rolls on to the platform, the scale-bea m, as did the frontend, but which will again descend as the car leav ing the index-wheel another notch, indicating the second ten tons as the weight tons as the whole weight of the load.' As the front end of theseco'nd car rolls on to the platform, the scalebeam goes up as it did for the front of the first can-and descends again, and again goes up as before, when the frontend rolls off and the hind end rolls on. Each time .the index-'wheel is turned twice foreach car, giving two distinct registers for each car as it passes over the scale-platform.

It has been presumed that each car contained twenty tons, that particular snm; but it will be obvious that a. less number o wheel, by reducing thependulum-weight P tons, will cause the shaft to turn the index sixteen, as shown on the wheel.

The passage of a greater number of cars may be indicated by the addition of supplementary index-wheels, Should the weight of the load will in like manner throw up es the platform, thereby turnof the hind end, mking'twenty the pendulum-weight P having been ga'ugcd to f tons will raise' the shaft, and turn 4the indextherefore, by graduating this weight to any particular number of wheel, and thereby indi :a tge icach car passed-over, to the lnumber of enact degree the train of cars, a close approximation only being desire Should a car crea-rs contain an excess oftwenty tous, or any number of tous to which the adjustment of the scales had been made, the shaft .l will *be thrown upward higher, the result of which will be to push up the slide-block N, so that the loop I will be lifted from a lower tooth,on which'it is caught, to one or .more above, which, as the shafts descend, will cause'the wheel H to turn more orlessyas the number of teeth that the loop may have passed over, one, two, or` more,`as the case may be.

The number of teeth in this -index-wheel is sixty, each tooth-indicating one hundred pounds, hence it will be obvious that'if a loaded car contain4 an excess of twenty tous, it will be indicatedby the wheel 'H, for the excess of weightwill cause the shaft to rise up so as tov carry upward .the .yoke b, which will be caught on a tooth above, when the descentoi` the scalesbeam and shaftwill. 'turn thel wheel one or more teeth, which will-indicate one or more lhundred pounds in excess -cf the twenty tons which the car was presumed to contain. .Y A

Should .the excess of weight be very great, the index-'wheell H. will be caused'to make one revolution,which will be indicatedA by the lug-wheel I, which is operated4 by the lug a above referred to. This lug, as 'it comes around, engagesin the lugs of the wheel I, and thereby turns it from one ligure to another, eachtigure or lug indieating one ton, the whole number being ten. f The arrangement 'and gradati'on 4ci; the wheels .H and I are such .that for each Vquarter of a revolutionV that H maymake, will .turn the wlfeel I one degree or ligure, indicating one tou; hence one complete revolution of theindexwheel H will be indicated by the lug-wheel, viz, three tons. I-t will be obviouslthatbythis arrangementv of the index-wheeh-H'and lug-wheelI I, the excess of twenty tons that encor more cars may con-tain is'knowu and registered, -thoughnot'- with the extreme exactn'ess necessary for close weighing; yet suflciently close for all railroad purposes', aclose approximation being all that is required, and great facility to determine that, and which are both obtained in this machine.

The practical-use of thecounterweights L rferredto is to relieve. thewcightgbeam from a too sudden and violent upward movement,as 'cars of different weight lirstrrell upon theplatform, v l

The shaft, on being suddenly raised upward by an excess of.twenty A tons`,say onehnndred pounds or more,would raise the yoke b one n otch, if applied gently, but iu consequence of being suddelyapplied, would throw the beam up so as to cause-the loop b to pass over two notches'or more,'a nd. thereby indicate a greater excess of weight than really upon the truck. 4To prevent this, and cause` the yoke to engage one notch only, if one hundred pounds is the excess, the collar f, tig. 2, fixed to4 the lower end of the shaft, will`engagc and Y lift upward the weight L, which is supposed to weigh one hundred pounds, thus corresponding to the weight registered on'the wheel H for each notch. In consequence of this additional weight the beam has to carry up, it will not rise high enough to engage more than one-notch, but should the excess of weight be two hundred or more, enough to raise the yoke two notches, the'second weight, L, will also be carried up with the firstV one, making two hundred pounds, equal to two notches, butnotthree, unless suddenly .thrown upwards without the said weights. Should the excess of weight exceed three hundred pounds, which-would carry the yoke three notches, and possibly four, if notrestran the third weight, is, together with the first two, making three hundred pounds, which -will restrain the yoke from rising above lthe notches and catching on a fourth, and so on, for any number of notches,-the weights may be multiplied, three only being here shown,

A,'g. 2, is a check dr lock, the purpose of which is to'prevent an unrequired turning of the lug-wheel. A pin, f', projecting from the side of the lever, between the lugs, will, as the wheel may turn, be restrained by the lugs engaging the pin, and thereby confined in' one position until the pin is lifted from between-the lugs, by a lug, a, projecting from the drum attached 'to the wheel H, which, as the wheel revolves, will pass under the end of the lever, lifting it up', thereby disengaging the pin from the lugs at the proper time for the lug-wheel to revolve.

B', fig. 1, Ais a tensionspring,'the purpose of which is to restrain the movement f the index-wheel so that it shall not move too freely. C is also a spring arranged for a similar purpose'. -The wheels thus restrained will not act with so much freedom as to produce confusion by their revolving too easily.

` What I claim as my improvement, and de'sire to secure by Letters Patent, is-

l. The short platform B, when so arranged in relation to the weighing-apparatus and car that' the scale will he nt rest and free when the wheels rs not upon the platform, and so operating that each end of s car will three tons be weighted and registered automatically wliile in motion over the platform, substantially as'and for the purpose set'fortb.

2. The series of counter-Weights I and lifting-shaft J, in combination with the beam D, substantially as and for the purpose set forth.

3. The lifting-shaft J, slide and block N, .in combination with the loops a and b, arranged and operating substantially as und for the purpose set forth. I v

4. The index-wheels H G and'lug-w-heel I, in combination with the cheek or lock A arranged in relation to each other, and operating substantially as and for the purpose set forth.A

5. The loops a b, in combination with the index-wheels G H, slide-block N, and lifting-shaft J', substantially as and for the purpose set'fortn...

' C. C. LYMAN.

Witnesses:

W. H; Brummen, J. HOLMES.

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