US1617669A - Calipers - Google Patents

Description

A. A. COY LE Feb. 15

CALI PERS 1926 2 Sheets-Sheet l Filed March 51 WVIIIIIII Patented Feb. 15,1927.

Y ALBERT A, COYLE, OF ST. LOUIS, MISSURI.

CALIPRS.

'Application ledfMarch 31, 17926.k Serial No. $58,905.

The present invention relates tonew and useful improvements in calipers, and'more particularly calipers of the micrometer type, the primary object of the invention being to provide Va caliper ot a novel construction and .especially designed for determining outer diameters as well as inner diameters.

Another obye'ct of the invention is to ,provide a registering 'caliper' having exeeptionally Wide range, combining the usefulness of several tools into a simple, compact, positive quick-acting and serviceableumt, thereby increasing the capacity of the operationsV y the requirements ote'xpertvmechancs.

ENith the foregoing and other objects in View .vhich will appear asthe description proceeds, the invention resides in the combination and arrangement of parts and in 1 7, the details of construction hereinafter devscribed and claimed, it being understood that changes in the precise embodiment ot the invention herein disclosed, may be made Within the scope or what is claimed, without departing from the spirit of the invention.

.Referring to the drawings: Figure 1 is an elevational view of a measf iiriiig instrument constructed in accordance with the invention. i

Figure 2 is a sectional view taken on line 2-2 et Figure 1.

lFigi-.ire 3 is a tragmental sectional view through the lower portion of the instrument and taken on line 3-3 ot'lTigureQ.

l*-1 igiire 4T is a sectional detail view of the cuter end ot the instrument.

Figure 5 is a sectional viewr taken on line ot Figure 1.

Figure 6 is an elevational view of the controlling rod ot the instrument. Y

Referring to the drawings in detail, the d vice includes a body portion indicated generally by the reference character 5, which is provided with lat-eral enlargements G that are cut away as at 7 to accommodate the lower ends oi the legs of the instrument, to be hereinafter more fully described.

A cover plate indicated at 8 is formed with suitable openings to accommodate the securing screws 9 that 'also pass `into .open' ings of thebody portion 5 to secure the cover plate in position. l

The, main or omt su aortinv' lers'of the instrument are `arranged in pairs as shown byligure 1, eachfpair including legs lOand 11 respectively, which are ot aV particular constructionand as shown, haveendportions r12 extending at substantially righty angles with respect to the main portions` A,

thereof, the ends of the right angled 'por tionsf12 being formed with heads 13 that are aperture-d tor receive the pinsr 14 that are carried` bythe body portion 5 to pivotally legs 10and 11 lto the body por-t secure the tion. Y Y A rlhe outer ends of the :legs l10 and 1lljare also :formed with `heads 15 that have ope'nf` ings to receive the supporting lpins 16 :that

pivotally connect'the point Vsuppe'rting members 17, it being understood that eachsup-y porting A.mennber 'includes a rearwardly, eX- tend'ed portion 18 formed with an opening to receive the pin 16,`to the endithat as the leg members 10 and llare moved, the members 1( lwill also move, btit will be held 'in the saine plane at all timesto insureac'curate measuringl v Y .l

l hrea'ded `openings are #formed f in the members 17, as shown by Figure 4 ofthe' drawings, which openings accommodate the .threaded extremities 19 ofthe removable points 20, nuts 21 being Aprovidedfor 'locking the points 2O within the openingsiolt the members 17.

Extending laterally from the members 1"(` are extensions 22 Vthat are formed with threaded openings to receive the pins 28 which may be utilized for measuring inner diameters, as for example, by placing the instrument within a pipe so that the pins 23 contact with the inner surfaces thereof while the points may be used ktoi' measuring outer diameters, by placing the instrument over a circular object in such a way that the pointsA 20 rest against the outer surfaces of the circular object. y

AThe operating mechanism includes an operating rod 24: that passes through an opening 'formed in the body portion, the inner end of the rod 24C being providedwith a head 25 which is cut away to receive the ad-V jacent ends of the arms'26 and 27, there being provided a connecting pin 28 extending therethrough to connect the arms 26 and 27 to the -rod 24;'. I

Secured to the body portionY 5is a barrel "29 that is provided with a threaded portion I 3() disposed adj aoent to its lower end, which threads cooperate with the threads 31 'ormedinteriorlyof the'sleeve 32,-which has a beveled edge 33 provided with graduations as shown byFigures l and 2 with the result that when the sleeve 32 is rotated, cerV `tain graduations 34 of -the barrel'29 are uncovered to indicate the distance that the legs l0 and 11 move, which graduations cooperate with graduations 34 providedv on the Y barrel 29. 1 f

4shown byFigure .3, the lower end of therod 24 lssnpphed -wlth a circular enlargement 35 adapted..-to engage the lnner Vsnrt'aceof the'bottom ot' the sleeveg82,

the'end'of the rod passing through an opening `formedv in the bottom 36 where it-V is formed' with internalthre-ads to receive the screw. A37'for. securing the rod 2d to the sleeve "32 in such a way as to permit of rotarylirioven'ient oftheA sleeve 32 around the rOdQ/l, and. owingto the fact `that the rod 24' isV carried by the sleeve 32, it will be obvious that the rod24 will be moved through theopening of the bodyportion 5, to adjust the'legs ofthei'nstrument in a: manner as shown in dotted lines inFigure l of the drawingsf From the oreg'oingit will be obvious that `dueto this construction, the control nut or Vsleevep), when operated, vwillaot to move Vthe members 17 inwardly or outwardly, ac-v cording to theV direction of rotation of thev sleeve 32, with'the result 'that the points 2O andv23 carried thereby are held in horizontaljplanes' to aecomplish the purpose of the Vscription of the r YI claim:

invention. i

In view of the foregoing detail description, itis thought that a further detail deinvention, is' unnecessary. 1. Acaliper inoluding a body portion, leg

members embodying outwardly and up-l wardly extended portions pivotally connected with the body portion, inwardly extended pins carried by the leg members,.out wardlyl .extended pins ,carried by the leg members, a barrel secured to the body por 'tionv and having graduations thereon, a

sleeve mounted orrotation on the barrel and adapted to move longitudinally of the barrel, an operating rod extending through the barrel and having connection with the sleeve, saidrod passing through the body portion, arms'pivotally connected Withthe rodand adapted to move the leg members Vtowards each other, when the rod is moved in one direction,v and said farm'adapted. to move the. leg members away from eachother when the rod'is moved in the opposite direction." 'y

2. A caliper including a body portion having aA central opening, apair of pivoted le@- members supported at each side of the body portion, a barrel secured tothe body portion, said barrel having'A a threaded portion, a sleevev having threads operating over the threaded portion, said sleeve and barrel.

havino' coo erat-inov efraduations a rod eX- e a r .v tending through theaopenmg 1n the'body portion andv having connection with the as my own, I have hereto amazed my signature.

ALBERTA. ooYLn.

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