US737560A - Cage for setting crank-pins. - Google Patents

Description

No. 737,560. PATENTED AUG. 25, 1903.

W. A. NUNNALLY.

GAGE FOR SETTING CRANK PINS.

APPLIOATION FILED MAY 13, 1903.

w no MODEL. 3 snnmssnnm M v PATENTED AUG. 25, 1903.

W..A. NUNNALLY.

GAGE FOR SETTING CRANK PINS. APPLICATION FILED unis. 1903.. no'momm.

3 SHEETS-SHEET 2 J7wazafar William fljliazym m: uonms PEYERS co, PNOTD-LITNO.. WASHINGTON. u. c

PATENTED AUG. ga 1903. W. A. NUNNALLY GAGE FOR SETTING CRANK PINS.

APPLIOATION FILED MAY 13, 1903.

3 SHEETS-SHEET 3.

N0 MODEL.

mveieioif vi l zbzrzwly Unrrnn STATES Patented August 25, 1903.

WILLIAM A. NUNNALLY, OF RICHMOND, VIRGINIA.

GAGE FOR SETTING CRANK-PINS.

SPECIFICATION forming part of Letters Patent No. 737,560, dated August 25, 1903.

Application filed May 13,1903. Serial No. 156,960. (No model.)

To all whom it ill/(by concern:

Beit known that LWILLIAM A. NUNNALLY, a citizen of the United States, residing at Richmond, in the county of Henrico and State of Virginia, have invented new and useful Improvements in Gages for Setting Crank- Pins, of which the following is a specification.

This invention relates to what I shall for convenience term a gage for setting crankpins, and the article may be employed for a variety of purposes.

It is essential that the crank-pins of the driving-wheels of a locomotive should be set exactly at ninety degrees to each other or, as it is known in shop parlance, quartered.

An object of my invention is to provide a simple, light, and effective tool for insuring absolutely the exact relation of the said crankpins and in a much more rapid manner than has heretofore been possible.

The invention includes other objects,which will be mentioned in the following description.

' In the drawings acoom panying and forming a part of this specification I have illustrated clearly a gage by which the results desired can be secured, and the peculiar construction of such gage will be set forth in said description, while the novelty of the invention will be incorporated in the claims succeeding such description.

I desire at this point to state that I do not limit myself to the precise disclosure thus made, for certain variations as to several features of the invention may be adopted within the scope of said claims.

Referring to said drawings, Figure 1 is a face view of the gage with one of its attachments omitted. Fig. 2 is a longitudinal central sectional elevation of the same. Fig. 3 is a transverse section of the gage. Fig. 4 is a similar view of the same, taken in a different plane and showing an attachment applied thereto which does notappear in Figs. 2 and 3. Fig. 5 is what might be considered an inside face view of an adjustable extension of the body of the gage. Fig. 6 is an edge view of the same. Figs. 7 and 8 are details in perspective of certain attachments hereinafter more fully described. Figs. 9 and 10 are face views of the opposite driving-wheels of a locomotive, showing the manner of using the gage in connection therewith. Fig. 11 is a face view of the gage with certain of its attachments applied and illustrating its manner of use in a different Way from that represented by Figs. 9 and 10. Fig. 12 is'a perspective view of an attachment hereinafter more fully described. Figs. 13, 14, and 15 are diagrammatic sectional plan views also hereinafter more fully described.

Like characters refer to like parts throughout the different views.

. The improved gage includes in its construc tion a body, as 2, which is generally made in the form of a skeleton or open casting, as shown most clearly'in Fig. 1. What are represented in said figure as the upper andlower edges of the body 2 are plane and are in parallelism with each other in order that when saidbody is placed across the axle-hole of a driving-wheel a suitable marking implement can be run along said edges to apply parallel lines to said wheel at opposite sides of sai hole. These lines'so marked upon the wheel are subsequently employed to determine whether or not. the key-seatformed in the wall of said hole is accurately located. In other words, the two lines act as a gage for determining definitely such point. As will hereinafter appear, the gage is reversiblethat is, either of its side faces can be placed against the web of the driving-wheel-a nd to assure that said gage sets parallel to said web the side faces of the body have portions which are perpendicular to the upper and lower straight edges of said wheel. The said side straight faces, however, need not extend for the complete depth of the body. In Fi 2, for example, they are simply shown as extending inward for a short distance from said straight edges.

In connection with the body 2-1 provide an extension 3, adjustable longitudinally thereof and connected thereto in some convenient manner. This extension 3 in the present case is slidably connected with the body, and, like the latter, it is ordinarily made in the form ofa skeleton 'castin g, its upper and lower edges being straight and in the plane of the corresponding edges of said body. The tool which is employed for marking lines upon the face of the driving-wheels may be and preferably is also run along the straight faces of the ex tension 3.

Said extension 3 has upon its inner side a tenon 4, set in a mortise or slot 5, extending into the body 2 from what is shown in Fig. 1 as its right end. The top and bottom of the tenon 4: are beveled to engage the correspondingly-beveled'walls of the slot 5, means, as will hereinafter appear, being provided to press the beveled portions of said tenon firmly against the beveled walls of the slot when the extension 3 is in an adjusted position, so that said extension will be held in accurate relation with the body 2. A screw 6 is tapped into the tenon 4 from what is illustrated in Fig. 1 as the left end thereof, the screw extending freely through a longitudinal bore in the body 2, the latter having a slot intersecting said bore. The nut 7 is disposed in said slot and is threaded onto the screw 6. By rotating said nut the extension 3 can be adjusted longitudinally of the body for a purpose hereinafter described, the range of adjustment being a considerable one in order to adapt the device'to wheels the distance between the crank-pins and axleholes of which vary. The slot 5 at the outer end thereof is bridged by the plate 8, suitably fastened at its ends to the body 2 and which has a hole to receive the screw 9,.the terminal threaded ends of which receive the nuts 10. The shank or body of the screw is square and fits snugly in a longitudinal slot 11 in the tenon 4, by reason of which the screw on the manipulation of either of the nuts 10 cannot be rotated. What is represented in Fig. 2 as the upper nut 10 is adapted to bear against the bridge-plate 8, while the lower nut in said figure acts against the tenon 4:, washers of course beingv interposed between the nuts and the bridge-plate and tenon, respectively. By the provision of two nuts the release of the extension 3 can be accomplished from either side of the gage. When both nuts are tightened up, said extension of course will be held in an adjusted position. lt'will be assumed that the face shown in Fig. 1 is upon the outside and that it is desired to adjust the extension 3. To do this, what is for the time being the outer nut 10 is loosened in order to free the tenon 4, and consequently the extension 3, of which said tenon forms a part. The nut 7 will then be operated to thereby move said extension toward or from the body 2, and when the former is properly positioned the loosened nut will be tightened. WVhen the other face of the gage is out, the opposite nut 10 of course will be likewise operated to release the extension. -What is shown in Fig. 1 as the left end of the body 2 is also straight, it being disposed at right angles to the upper and lower edges of said body, for a purpose that will hereinafter be obvious.

Upon the body 2 at superposed points and upon each side thereof are the lateral pro jections, each denoted by 12 and vertically alined with each other. These projections can be secured by driving pins through properly-locatedperforations in the body, the pins of course extending equidistantly from the opposite faces thereof. Said projections are adapted to abut against the wall of the axlehole of a driving-wheel at points in the present instance ninety degrees from each other and when either side of the gage is out.

The outer end of the extension 3 is apertured, the faces or walls of the aperture being set at right angles to each other and adapted to engage the periphery of the collar of a crank-pin at points ninety degrees from each other.

In operation the device is first placed against a driving-Wheel, with the body 2 thereof crossing the axle-hole of said wheel, with the projections 12 solid against the wall of said hole, and with the faces 13 fitted solidly against the collar of the crank-pin, such projections and faces engaging the wheel at points right-angularly disposed to each other. Lines are then drawn-along the face of the wheel by a suitable marking instrument run along the upper and lower straight edges of the gage. 0nd wheel and the same procedure follows, and such action may be repeated with other wheels. After the wheels are marked they are ready to have key-seats cut in the axleholes. When the key-seats are formed, the wheels are placed upon the opposite ends of an axle or axles, and the marked parallel lines made in the manner indicated are used to ascertain if the key-seats are in the proper places. Generally the wheels are quartered when the axles are out of the same, and in this case the following operation will take place: The lateral projections 12 on one or the other side of the body 2, which in Fig. 2 may be the upper-side, are placed in the axlehole and moved into solid engagement with the wall of said hole at the left of the vertical center. The outer nut 10 is then loosened, so that the extension 3 can be operated by means of a nut to move said extension either inward or outward relatively to the body 2 to bring the faces 13 against the periphery of the crank-pin collar. When this is done, the extension is set in its adjusted position by tightening the outer nut 10. The body2, as shown most clearly in Fig. 1., is provided with three levels, each denoted by 14, two of which extend longitudinally of the gage, while the third one extends transversely thereof, the

bubbles in thelongitudinally-extending levels being observable through slots in the body 2, by which they are directly carried, as is also the third one, said third gage, however, be-

ing sunk into the left straight end or edge ofsaid body. After inserting the pins 12 in the axle-hole and placing the faces 13 against the crank-pin collar in the manner just alluded to the wheel is turned for the purpose of bringing the center of the crank-pin into horizontal line with the center of the axle-hole, (see Fig. 9,) which fact will be indicated when the bubble in what is for the time being the upper longitudinally-disposed level 14 is cen- The gage is then applied to asecthe wheel is chocked.

moved from the Wheel and applied to a sectered. After the" centers of the axle-hole and crank-pin are brought into horizontal line The gage is then reond one in precisely the same manner-that is to say, the pins 12 are inserted in the axlehole of the second wheel, while the faces 13 are brought solidly into abutment with the periphery of the shoulder of the crank-pin of said second wheel. When this is done, the second wheel is'turned, the gage of course "being moved with the wheel toward a vertical position with its apertured end down and until the bubble in the transversely-disposed level 14 centers. When it does center, this will indicate that the crank-pin of the second wheel is disposed exactly at a right angle to thecrank-pin of the first wheel. Of course the same procedure will be followed when there are four and six drivers.

All crank-pins are not provided with collars, as some merge into the outer faces of the driving-wheels upon curved lines. I so form the extension 3 that the faces 13 can be brought squarely against such collarless pins. It will be seen upon reference to Fig. 2 and also to the diagrammatic Figs. 13, 14, and 15 that the faces or walls in question are undercut or beveled. Fig. 13 illustrates the manner in which said undercut walls are placed against the collar of a crank-pin, while Fig. 14 illustrates said walls placed against a collarless crank-pin, the outer beveled or knife edges of the walls fitting against the straight portion of said pin, whereby the gage will be disposed at a right angle to the collarless pin. The effective portions of the two walls, when applied to a crank-pin collar or pin, are set away from the side face or web of' the driving-wheel.

The device arranged as hereinbefore set forth is adapted especially for quartering wheels when the crank-pins thereof are in place. I provide means for quartering said wheels when the crank-pins are removed, as I will now set forth.

Referring particularly to Fig. 12, I illustrate an auxiliary extension 16, which is slidable between what are shown-in Fig. 11 as the superposed walls of a slot 17, extending inward from the apertured outer end of what might be considered the main extension 3. The engaging portions of the auxiliary section 16 and main extension 3 are beveled in order that said auxiliary section when clamped in an adjusted position will be firmly maintained in such relation. Into the main extension 31 tap the screws 18, located about midway of the length of the slot 17 and which extend over said slot to engage the body of the auxiliary section 16 and force the beveled portions thereof firmly against the correspondingly-beveled walls of said slot. By

backing out the screws a trifling distance the auxiliary section 16 is free for adjustment. When the auxiliary extension 16 is applied,

with the walls or faces 13.

the gage is used exactly in the manner her-einbefore described,except thatthe oppositelydisposed projections 19 upon the auxiliary section are placed in the crank-pin hole and solidly against the wall thereof.

In some cases it is necessary to quarter the wheels when the axle is therein, and I provide means, as will now be described, whereby such result can be accurately accomplished. The body 2 near its upper and lower edges is perforated to receive the taper pins 20, extending from the cross-bar or plate 21, Fig. 7. By providing taper pins said cross-bar can be held exactly at right angles to the body 2 and without vibration, it being understood that said cross bar or plate is applied when in use to what is for the time being the inner side of the body, Figs. 4 and 15. At exactly the center of the cross-bar is the center 22, the shank of which is tapped into said cross-bar and the body of which fits squarely against the outer straight face of an annular shoulder upon said cross-bar, so that the point of the center 22 can accurately fit into the central concavities or depressions in the opposite ends of the axle. When the axle is in place, the cross-bar 21 will be attached to the body 2 and the point of the center 22 will be inserted into the concavity at one end of said axle. The extension 3 is then adjusted in order that certain attachments thereon can be brought against the collar of the crank-pin.

set at right angles to each other upon the inner face of the extension 3 at its apertured end, tapered pins being provided to unite the parts, whereby they can be held accurately in place. faces of these blocks 23 are straight and flush When thewheels are quartered with the axle therein, in which case the cross-bar 21 is used, the body 2, and hence the extension 3, will project outward beyond the wheel. The walls 13 of course will not engage the crank-pin collar; hilt the working straight faces of the blocks 23 will, so that accurate quartering of the wheel can be obtained even when the axle is in place. After the wheels are applied to the axles and their crank-pins quartered, ashereinbefore set forth, keyways in the opposite endsof said axles can be laid off to accurately match previously-cut keyways in the wheels.

The gage as a Whole consists of the body 2, the main and auxiliary extensions 3 and 16, and the attachments, as hereinbefore described, such attachments being removably fastened in place, so that in certain of the uses of the improved device, as hereinbefore set forth, said removable attachments can be readily taken 05.

The working or adjacent These attachments consist of two blocks 23 (see particularly Figs. 8 and 15) too IIO In every use of the invention means are Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A gage having a body provided with lateral projections to engage the wall of the axlehole of a wheel, and an adjustable extension connected therewith having faces to engage the crank-pin of said wheelat different points.

2. A gage having a body provided with lateral projections upon its opposite faces to engage the wall of the axle-hole of a wheel, and an adjustable extension connected therewith having faces to engage the crank-pin of said wheel at different points.

'3. A gage having a body provided with lateral projections to engage the wall of the axlehole of a wheel, and an adjustable extension connected therewith having faces set at angles to each other to engage the crank-pin of said wheel, said faces being undercut.

4. A gage having a body provided with lateral projections to engage the wall of the axlehole of a wheel, an adjustable extension connected therewith, having faces to engage the crank-pin of said wheel at different points, and a plurality of levels connected with the body, one of the levels extending longitudinally of the body and another level extending transversely of said body.

5. A gage having a body provided with lateral projections to engage the wall of the axlehole of a Wheel, an adjustable extension connected therewith having faces to engage the periphery of the crank-pin of said wheel, an adjusting-screw tapped into the adjustable extension, and a nut for operating the adjusting-screw, the body having a slot to receive said nut.

"6. A gage having a body provided with projections to engage the wall of the axle-hole of a Wheel, an extension provided with faces to engage the crank-pin of said Wheel at different points and with a tenon, the body being mortised to receive said tenon, a bridge-piece upon the body crossing the mortise, a screw extending through the bridge-piece, having a square shank, the tenon being slotted to re ceive said square shank, a nut upon the screw to engage the bridge-piece, a second screw tapped into said tenon, and a nut upon said second screw, the body having a slot to receive said second nut.

7. A gage having a body provided with oppositely-disposed projections upon its side faces arranged in cooperatin g pairs and adapted, each pair, to engage the wall of the axlehole of a wheel, an extension provided with faces to engage the periphery of the crankpin of said wheel at different points, said extension having a tenon, and the body having a mortise to receive said tenon, a bridge-piece upon the body crossing said mortise, a screw extending through the bridge-piece, having axle-hole of a wheel, an extension provided with faces to engage the periphery of the crank-pin of said wheel at different points,

and with a tenon, the body having a mortise to receive said tenon, and the engaging portions of the Walls of the mortise and tenon being beveled, means for adjusting the extension relatively to the body, and independent means for holding the extension in an adjusted position by forcing the beveled portions of the tenon thereof solidly against the correspondingly-beveled portions of the body.

9. A gage having means for engaging the wall of the axle-hole of a wheel and the periphery of the crank-pin of said wheel at points on the engaged surfaces at approximately ninety degrees from each other respectively.

10. A gage having a body provided with projections to engage the wall of the axlehole of a wheel, and with a detachablymounted member provided with a center to enter the concavity of the axle, an extension adjustably connected with the body and provided with faces to engage the periphery of the crankpin of said wheel at separated points, detachably-mounted blocks having straight faces coinciding respectively with said first-mentioned faces, and a second extension adjustably connected with said firstmentioned extension and provided with pins to engage the wall of the crank-pin hole at different points.

11. A gage having a body provided with lateral projections to engage the wall of the axle-hole of a wheel, main and auxiliary extensions, the main extension being adjust ably connected with the body, and the auxiliary extension being adjustably connected with the main extension, said main extension having faces to engage the periphery of the crank-pin of said wheel at different points, and the auxiliary extension having pins to engage-the crank-pin hole at different points.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

WILLIAM A. NUNNALLY. Witnesses:

JAMES L. NORRIS, ROBERT EVERETT.

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