US1224628A - Wheel-machine. - Google Patents

Description

J. T. GARDNER.

WHEEL MACHINE.

APPLICATION FILED FEB.2I, I9l7.

Patented May 1, 1917.

2 SHEETS-SHEET 1 Inventor -Witness:

Attorney INK .vrmms PETERS ca. Puomumo WASNINC mm, a c.

J. T. GARDNER WHEEL MACHINE.

APPLICATION FILED 3.21. 1911.

Patented May 1, 1917.

2 SHEETS-$HEET 2 John T Gardner Inventor LU S ()f Witness Attorney UNETED TATE PATENT @FFKQE.

JOHN T. GARDNER, OF HAMILTON, OHIO, ASSIGNOR TO THE BENTEL &1VIARGEDANT COMPANY, OF HAMILTON, OHIO.

WHEEL-MACHINE.

Specification of Letters Patent.

Patented May 1, 1917.

Application filed. February 21, 1917. Serial No. 149,996.

To all whom it may concern:

Be it known that I, J OHN T. Ganonnn, a citizen of the United States, residing at Hamilton, Butler county, Ohio, have invented certain new and useful Improvements in lVheel-Machines, of which the following is a specification. 1

This invention, pertaining to wheel machinery, relates to improvements designed to bore the hub-hole and face the center of the spider of a class of wheels very commonly employed in connection with automobiles.

Wheels of the class referred to may be briefly described as a felly formed of two semi-circular halves, spokes tenoned into the telly and having their inner end portions joining on radial lines, the parts being held together, under compression, by the metal felly-band. The character of the wheel will be recognized from Fig. 2 of the accompanying drawings. The associated parts which have been referred to are spoken of as the spider, and my improvements have to do with the facing of a central portion of the spider, the boring of the hub-hole, and the countersinking of either or both ends of the hub-hole.

My invention will be readily understood from the following description taken in connection with the accompanying drawings in which Figure 1 is front elevation of a machine exemplifying my invention:

Fig. 2 an end view of the upper facinghead:

Fig. 3 a side elevation of one of the chuck jaws, partly appearing in vertical section, in the plane of line a of Fig, at:

Fig. 1 an end elevation of one. of the chuck-j aws Fig. 5 a side elevation of a portion of the top gage:

F ig. 6 a vertical diametrical section of a portion of the chuck, in the plane of line b of Figs. 9 and 10:

Fig. 7 a side elevation of'the counterbalancing mechanism of the lower cutting devices:

F 8 side elevation of the counterbalancing mechanism of the upper cutting devices:

Fig. 9 a side elevation of the lower gage: and

Fig. 10 a plan of the lower gage.

A diversity of scales is employed in the drawings.

In the drawings 1, indicates a pair of vertical housings:

2, a base disposed between the two housings and rigidly uniting them:

3, av horizontal rail mounted for vertical adjustment on the housings:

4, a chuck-spindle vertically journaled in the base:

5, a chuck rigidly secured to the upper end of the chuck-spindle and having a large opening in the center of its top:

6, transmission-mechanism typical of means by which the chuck may be rotated by power:

7, a saddle adjustable horizontally upon the rail:

8, a cutter-housing fitted to slide vertically in the saddle:

.9, typical mechanism for counterbalancing the cutter-housing and the parts carried by it:

10, chuck-jaws mounted for radial adjustment on the chuck:

11, the chuck-screws by means of which the jaws may be moved radially:

12, bevel-pinions on the inner ends of the chuck-screws 18, a ring-gear mounted for rotation in the chuck, concentric with the axis of the chuck, and engaging the pinions of the chuck-screws, so that when any one of the chuckscrews is turned the other chuckscrews will also be turned, as is usual in uni versal chucks:

14:, the large circular recess in the center of the chuck:

15, the base of one of the chuck-jaws, radially adjustable in the chuck:

16, a chuck-lever united to the base of the chuck-jaw by a horizontal pivot:

17 a spur projecting inwardly from the chuck-lever 18, a spring connected with the base of the chuck-j aw and acting on the chuck-lever and tending to urge the spur away from the body of the chuck:

19, an adjustable screw operating between the jaw-base and the chuck-lever and serving to limit the extent to which the spring may lift the point of the spur away from the face of the chuck:

20, surfaces of contact on the j aw-base and the chuck-lever to limit the descent of the point of the spur toward the face of the chuck:

21, the spokes of the wheel:

22, the felly:

23, the felly-band: and

24:, the hub-receiving bore in the center of the spider formed by the spokes and felly and felly-band.

The chuck, carrying the spider which is to be operated upon, is to be rotated at a comparatively low rate of speed, say twenty turns per minute, and the tools to do the work upon the spider, as will be later described, are to operate upon it at the usual high speed of wood-working cutters. While the chuck is stationary and open the spider is to be laid upon the face of the chuck, either side up, according to preferred practice. The chuck-jaws are then to be moved inwardly simultaneously, thus centering and chucking the spider. The periphery of the spider is gripped by the inner extremities of the chuckspurs, and when these spurs first attack the felly-band they do so at a given distance from the face of the chuck. As the jaws continue to move inwardly and exert a substantial pressure on the fellyband, the springs 18 yield, permitting the active extremities of the spurs to descend in such manner that While the spurs are beginning to exert their grip upon the spider they urge it toward the face of the chuck. The descent of the extremities of the spurs toward the face of the chuck ceases when the surfaces 20 come into contact, and the screws 19 determine the degree of rising of the spurs when free from the work. The inner extremities of the spurs are below the axes of pivoting of the chuck-levers and the consequence is that the spider is centered and firmly gripped and pressed firmly to the face of the chuck, or to the face of the radial ribs on the face of the chuck by which the spider is supported. It is my preference that the chuck be provided with three of the jaws and that, by means of radial ribs on the chuckface at the jaws, the spider be given three points of support, one under each of the spurs. The springs 18 should be stiff enough to prevent the points of the spurs from yielding clownwardly before they have taken a sufliciently aggressive grip upon the spider.

The spider having been chucked and set into rotation, it is in order for the operating tools to work upon it.

Proceeding with the drawings 25, indicates a quill splined through the chuck-spindle t and forming within it a bearing concentric with the chuck-spindle:

2G, a lower cutter-spindle journaled in this quill and projecting up into the central recess let of the chuck and projecting down some distance below the chuckspindle:

27, a pulley supported by the base of the machine and having the lower cutter-spindle splined through it:

28, a face cutterhead secured, by any suitable means, to the upper end of the lower cutter-spindle, and adapted to face the lower surface of the center of the spider when the cutter-head is properly elevated:

29, a boring-cutter carried by the lower cutter-spindle above the facing cutterhead 28:

30, a filleting or countersinking cutter carried by the lower cutter-spindle between the facing cutter and the boring-cutter:

31, a gage-arm fast to the upper end of the quill: and

32, a gage carried by the outer end of the gage-arm and having its upper surface in position to engage one of the spokes of the splder outwardly of the lower face which is to be dressed, this gage being vertically adjustable on the gage-arm so that its upper edge may be in a horizontal plane at a desired vertical distance from the horizontal plane of rotation of the cutters of the facing-head.

W hile the spider is being chucked the cutting apparatus which has been described is in lowered position housed within the central recess of the chuck. If, after the spider hasv been chucked, and while the chuck is 111 slow rotation, and the lower cutting apparatus in high rotation, the lower critterspindle 26 be raised, by any means whatever, the boring-cutter will bore out the spider, and the lower facing-cutter will face off its center, and the filleting-cutter 30 will countersink the lower end of the bore. As the lower cutting apparatus is thus elevated to do its work upon the spider, the quill slides through the chuck-spindle and turns with it. If it were desired that the finished lower face of the spider be at some definite distance from the part of the spider which rests upon the chuck, then the facing work could obviously be arrested at the proper point by means of a suitable stop, or the work could be done by measurement.

But it is a not unusual requirement that the lower face of the spider be finished with reference to the edges of the spokes near the face center of the spider. The spider may be dished more or less, in one direction or the other, and inamore or less erratic manner. In the present case, the gage 32 rises with the lower facinghead and when it engages the edge of a spoke it indicates that the facing operation should be carried no farther. The operator, in elevating the lower facing head to its work, may, by sense of feeling, determine when the gage has come in contact with the spoke, but the gage acts as a stop to limit the rise of the facinghead and the facing-head will then cease its work and the note produced by its operation will change and the lower cutting apparatus may be retracted downwardly from the spider. Y

It is only necessary that gage 32 cu e a single spoke of the spider and it should have a circumferential extent sufficient to prevent it from passing between two spoke in other words, it may engage a pair of the spokes. The gaging effect of gage 32 with reference to the edge of the spokes and lower facing of the spider will be understood from an inspection of Fig. 2 in which indicates a point of contact between the gage and a spoke, this point of contact being outwardly beyond the faced central portion of the spider.

The lower surface of the center of the spider having been faced, and the bore having been produced and provided with its lower countersink, it is in order to face the upper surface of the center of the spider, and at this point it may be stated that cominercial reouisitions sometimes call for countersinking the bore at one face of the spider and sometimes call for countersinking at both faces. Of course, the provision of counter-sinking cutters will be according to the requirements.

Proceeding with the drawings indicates an upper cutter-head mounted on a horizontal spindle journaled in the lower part of cutter-housing 8 and adapted to face the upper surface of the center of the spider as the spider revolves below it:

3 1, filleting cutters mounted on the same spindle and adapted to produce the upper countersink, as indicated in Fig. 2:

35, the pulley for rotating the upper cutter-head:

36, a pinion journaled in the saddle behind the upper cutter-housing:

87, a rack engaging this pinion and secured to the upper cutter-housing:

38, an upper feed-shaft journaled in the rail and splined to the pinion 36:

39, a hand-wheel on this shaft: 7

$0, a vertical movable step-bearing for lower cutter-spindle 26:

all, a pair of racks projecting upward rigidly from the step-bearing and suitably guided in the base of the machine:

42, a lower feed-shaft journaled in the base of the machine and carrying pinions engaging the racks ll:

13, a lower hand-feed shaft journaled in the base of the machine at convenient height for a workman:

-1--l-, a chain-belt connecting sprocketwl eels on the two shafts s2 and 4:3 and a5, a hand-wheel on shaft $3.

The lower cutting apparatus is raised and lowered, in an obvious manner, by the hand-wheel 45, and the upper cutting apparatus is raised and lowered by the handwheel 39. The saddle is to be adjusted to such position upon the rail that cutter-head 33 will properly act upon the upper face of the center of the spider while the upper filleting cutters 34lsweep in a vertical plane diametrical. to the bore.

It has been explained that one face of the center of the spider should be gaged from the edges of the spokes and that the face thus produced was a variable having no definite relation to any fixed part of the machine or any part of the spider except the spoke-edge from which the gaging was done. But it is not unusually required that the thickness of the finished center of the Spider shall be within certain limits, the

toleration in some cases being as low as the hundredth of an inch. From this it follows that, in satisfying such requirements, the second face of the spider must be gaged with reference to the first face, which is itself a variable. This is something which could hardly be done at all by direct measuring or gaging, and certainly not when the spider is turning and being operated upon. In my improved machine the feeding movement of the upper facing-head is accurately gaged from the position which the lower facin head occupied in doing its facing.

Proceeding with the drawings e6, indicates a vertical gage-rod arranged to slide in guides carried by the fra1nework of the machine at a point beyond the periphery of the chuck:

17, the upper guide of this rod:

48, a hand-screw by means of which the rod may be clamped in this guide:

d9, a stop upon guide 47 to serve in limiting the unscrewing motion of the screw so that the handle may be in reasonably definite position when the rod is free from the clamp-screw 50, a projection from the lower portion of the gage-rod;

51, a lower gaging lever pivoted to the base of the machine and having its free end under projection 50 of the gage-rod:

52, a stop carried by the lower guide of the gage-rod and giving normal support to the free end of lower gaging-lever 51:

58, a lug carried by lever 51, and vertically adjustable with reference thereto, and adapted to be engaged by the upper end of one of racks 41 when the lower cutter-spindle 26 is elevated sufficiently:

54L, typical counterbalancing mechanism for the lower cutter-spindle and the vertically movable mechanism pertaining to it:

55, an upper gage-lever pivoted to the saddle and having its free end projecting horizontally near the gage-rod:

56, a vertically adjustable dog carried by the upper cutter-housing and adapted, in the descent of the upper cutter-head, to come into contact with upper gaging-lever 55:

57 an arm rigidly secured near the upper end of the vertical gagingrod and project ing under the free end of lever 55:

58, a vertical adjusting-screw carried by arm 57 and adapted to have its upper end engage below lever 55: and

59, in Fig. 2, the point of gaging contact on a spoke of the saider, as heretofore referred to.

lVhen the lower cutting apparatus rises it picks up lower gaging-lever 51 and raises gage-rod 46 and, consequently, raises upper -'gaging-levc1' 55. When the lower cutting apparatus has reached the top of its stroke, as determined by the gage 32 making contact with the spoke, the hand-screw A8 is actuated and the vertical gage-rod clamped in its elevated position. Now, when the lower cutting apparatus descends, the upper gaging-lever 55 will be in a position determined by the variable extent to which the lower cutting apparatus may have been elevated in finishing its work. When the upper cutting apparatus is lowered to do its work, it is arrested by dog 56 coming in contact with the upper gaging-lever, the upper face of the spider thus being dressed to a plane accurately related to the lower face of the spider. The motion of the lower ing-lever causes the vertical-motion of the lower cutting apparatus to be multiplied upon the vertical gage-rod, and the adjustment of screw 58 results in a small movement of the upper gaging-lever at the point where it is engaged by dog 56, thus providing for accurate adjustment and for accurate gaging by mechanism clear of the periphery of the spider and clear of the chuck which carries the spider.

Lug 53 is adjustable upon the lower gaging-lever so that when the lower cutting apparatus shall have reached thetop of its stroke it will have given adequate motion to the lower gaging-lever, this adjustment not being a matter of any special nicety but merely providing for desirable lost motion. Arm 57 may be adjusted on the vertical guide-rod and dog 56 may be adjusted on the upper cutter-housing to suit general variations in different lots of work to be done, and similarly as to the vertical adjustment of the rail upon the housing, and it is obvious that the parts above the chuck should be high enough to permit of the convenient placing and removing of spiders. The extremely accurate adjustment of the gaging system is effected at screw 58.

I have particularly set forth my improved machine as a machine designed to operate on spiders with their axes vertical and I have accordingly employed such terms as top, bottom, upper, lower, horizontal, vertical, etc., but these terms have been employed for convenience in description and they are to be considered in thelr relative sense only.

It is to be understood that the machine particularly illustrated and described is simply one exemplification of my invention, for I have merely sought to explain the principle of my invention and to set forth the best mode in which I contemplate embodying that principle.

1. A wheel machine comprising, a chuck spindle, a chuck carried thereby and provided with a central recess, a cutter-spindle journaled concentrically within the chuckspindle and capable of endwise motion therein, and a face cutter-head secured to said cutter-spindle and adapted to be reciprocated into and out of said recess by the endwise movement of the cutter-spindle, combined substantially as set forth.

2. A wheel machine comprising, a chuckspindle, a chuck carried thereby and provided with a central recess, a cutter-spindle j ournaled concentrically within the chuckspindle and capable of endwise motion therein, a face cutterhead secured to said cutter-spindle and adapted to be reciprocated into and out of said recess by theendwise movement of the cutterspindle, and a boring-cutter carried by the end of the cuttear-spindle beyond the face cutter-head, combined substantially as set forth.

3. A wheel machine comprising, a chuckspindle, a chuck carried thereby and provided with a central recess, a cutter-spindle journaled concentrically within the chuckspindle and capable of endwise motion therein, a face cutter-head secured to said cutter-spindle and adapted to be reciprocated into and out of said recess by the endwise movement of the cutter-spindle, and a filleting-cutter carried by the end of the cutter-spindle beyond the face of the face cutter-head, combined substantially as set forth.

A. A wheel machine comprising, a chuckspindle, a chuck carried thereby and provided with a central recess, a cutter-spindle journaled concentrically within the chuckspindle and capable of endwise motion therein, a face cutter-head secured to said cutter-spindle and adapted to be reciprocated into and out of said recess by the endwise movement of the cutter-spindle, a boring-cutter carried by the end of the cutterspindle beyond the face cutter-head, and a filleting-cutter carried by the cutter-spindle between the face cutter-head and the boringcutter, combined substantially as set forth.

5. A wheel machine comprising, a chuckspindle, a chuck carried thereby and provided with a central recess, a cutter-spindle journaled concentrically within the chuckspindle and capable of endwise motion therein, a face cutter-head secured to-said cutter-spindle and adapted to be reciprocated into and out of said recess by the endwise movement of the cutter-spindle, and a facing cutter-head mounted contiguous to and free from the chuck and adapted to operate upon a piece of work held in the chuck and face the surface of the work farthest from the chuck, combined substantially as set forth.

6. A wheel machine comprising, a chuckspindle, a chuck carried thereby and pr0- vided with a central recess, a cutter-spindle journaled concentrically within the chuckspindle and capable of endwise motion therein, a face cutter-head secured to said cutter-spindle and adapted to be reciprocated into and out of said recess by the endwise movement of the cutter-spindle, and a facing cutter-head mounted contiguous to and free from the chuck and on an axis at right angles to the axis of the chuck and adapted to operate upon a piece of Work held in the chuck and face the surface of the work farthest from the chuck, combined substantially as set forth.

7. A wheel machine comprising, a chuckspindle, a chuck carried thereby and provided with a central recess, a cutter-spindle journaled concentrically within the chuckspindle and capable of endwise motion therein, a face cutter-head secured to said cutter-spindle and adapted to be reciprocated into and out of said recess by the endwise movement of the cutter-spindle, a second facing cutter-head mounted contiguous to and free from the chuck and on an aXis at right angles to the axis of the chuck and adapted to operate upon a piece of work held in the chuck and face the surface of the work farthest from the chuck, and a filleting-cutter carried by the spindle of the second facing cutter-head and independent thereof and adapted to sweep across the end of the bore in the work as faced by the second cutter-head, combined substantially as set forth.

8. A wheel machine comprising, a vertically disposed chuck-spindle. a chuck car- 'ied by the upper end thereof and provided with a central recess, sputter-spindle journaled concentrically within the chuck-spindle and capable of endwise motion therein, and a face cutter-head secured to the upper end of said cutter-spindle and adapted to be reciprocated into and out of said recess by the endwise movement of the cutter};-

spindle, combined substantially as set forth! 9. A wheel machine comprising, a chuck-l spindle, a chuck carried thereby and journaled concentrically within the chuckspindle and capable of endwise motion therein, a face cutter-head secured to said cutter-spindle and adapted to be reciprocated into and out of said recess by the end- P -l vided with a central recess, a cutter-spindle j'splder,

wise movement of the cutter-spindle, and means for rotating the chuck and cutterspindle independently of each other and at different speeds, combined substantially as set forth.

10. A wheel machine comprising, a vertical chuck-spindle, a chuck carried by the upper end thereof and provided with a central recess, a lower cutter-spindle journaled concentrically within the chuckspindle and capable of endwise motion therein, a lower face cutter-head secured to said cutter-spindle and adapted to be reciprocated into and out of said recess by the endwise movement of the cutter-spindle, an upper cutter-head disposed above the chuck and adapted to face the upper surface of work carried by the chuck, and means for adjusting the two cutter-heads with relation to each other and to the chuck, combined substantially as set forth.

11. A wheel machine comprising, a vertical chuclcspi'ndlc, a chuck carried by the upper end thereof and provided with a central recess. .pportinc; rollers under the outer edge of the chuck, a cutter-spindle journaled concentrically within the chuckspindle and capable of endwise motion therein, and a face cutter-head secured to the upper end of said cutter-spindle and adapted to be reciprocated into and out of said recess by the endwise movement of the cutter-spindle, combined substantially as set forth.

12. A wheel machine comprising, a chuck mounted for rotation on a vertical axis and adapted to support a spider resting thereon, radially movable chuck-jaws for centering and clamping the spider while it is supported by the chuck. and upper and lower facing cutter-heads adjustable toward each other and adapted to face the upper and lower surfaces of a spider held in the chuck, combined substantially as set forth.

13. A wheel machine comprising, a bed, a pair of housings projecting upwardly therefrom, a chuck vertically journaled on the bed and adapted to give vertical support to a spider and provided with a circle of inwardly acting chuck-jaws adapted to grip the supported spider, a rail supported by the housings over the chuck, a saddle supported by the rail, an upper facing cutterheacl carried by the saddle and vertically adjustable to and from the chuck and adapted to face the upper surface of a spider car ried by the chuck, and alower facing cutter head disposed below the support of the spider and arranged for vertical adjustment and adapted to face the lower surface of the combined substantially as set forth.

14:. A wheel machine comprising, a chuck dapted tocarry a spider which is to have ts center faced, a facing cutter-head adaptd to perform a facing operation upon the spider, mechanism for feeding the cutterhead to the spider, a gage adapted to move axially of the spider and to engage and act as a feeler upon the edge of a spoke radially beyond the portion of the spider to be faced, and means for moving said gage toward the spider coincidentally with the feeding of the cutter-head, whereby the feed of the cutterhead to the spider may be arrested at a point in relationship to the position of the edge of the spoke, combined substantially as set forth. v

15. A wheel machine comprising, a chuck adapted to carry a spider which is to have its center faced, a facing cutter-head adapted to perform a facing operation upon the spider, mechanism for feeding the cutterhead to the spider, a. gage adapted to move axially of the spider and to engage the edge of a spoke radially beyond the portion of the spider to be faced, and means connecting the cutter-head and gage and preventing the feeding advance of the cutter-head rela tive to the gage, whereby the feed of the cutter-head to the spider is automatically arrested at a point in relationship to the position of the edge of the spoke, combined substantially as set forth.

16. A wheel machine comprising, a chuck adapted to carry a spider which is to have its center faced, a facing cutter-head adapted to perform a facing operation upon the spider, mechanism for feeding the cutterhead to the spider, a gage adapted to move axially of the spider and to engage and act as a feeler upon the edge of the spoke radially beyond the portion of the spider to be faced, means for moving said gage toward the spider coincidentally with the feeding of the cutter-head, and a multiplying gage-lever moved with said gage and having its free end projecting beyond the periphery of the chuck, whereby the feed of the cutter-head to the spider may be arrested at a point in relationship to the position of the edge of the spoke as indicated upon an enlarged scale by the movement of the free end of the lever, combined substantially as set forth.

17. A wheel machine comprising, a chuck adapted to carry a spider which isto have its center faced, a facing cutter-head adapted to perform a facing operation upon the spider, an endwise movable spindle for said cutter-head, a bearing for the spindle and movable endwise with it, a gage carried by said bearing and adapted to engage the edge of a spoke radially beyond the portion of the spider to be faced, and means for moving the spindle and gage toward the spider, combined substantially as set forth.

18. A wheel machine comprising, a chuck spindle, a chuck carried by the spindle and provided with a central recess, a quill splined in the chuck-spindle, a cutter-head spindle journaled in the quill concentric with the chuck-spindle and moving endwise .with the quill, a cutter-head fast on the cutter-head spindle and adapted to perform a facing operation upon a spider carried by the chuck, a gage secured to the end of the quill nearer the chuck and adapted to engage the edge of a spoke radially beyond the portion of the spider to be faced, and means for feeding the cutter-head toward the spider, combined substantially as set forth.

19. A wheel machine comprising, a first and second cutter-head adapted to face the opposite surfaces of a spider, means for moving the cutter-heads toward the spider independently of each other, a gage con nected with and moving with the first cutterhead and adapted to engage the edge of a spoke of the spider, a gage to indicate the degree of movement of the second cutterhead toward the spider, and connections between the two gages to indicate when the second cutter-head has moved to a position in definite relationship to the movement of the first cutter-head, combined substantially as set forth.

20. A wheel machine comprising, a first and second cutter-head adapted to face the opposite surfaces of a spider, means for moving the cutter-heads toward the spider L independently of each other, a stop to arrest the movement of the second cutter-head toward the spider, and connections between the gage and stop to make the stop effective when the second cutter-head has moved to a position in definite relationship to the movement of the first cutter-head, combined substantially as set forth.

21. A wheel machine comprising, a bed, a pair of housings projecting upwardly therefrom, a chuck vertically journaled on the bed and adapted to give vertical support to a spider and provided with a circle of inwardly acting chuck-jaws adapted to grip the supported spider, a rail supported by the housings over the chuck, a saddle supported by the rail, an upper facing cutter-head carried by the saddle and ver tically adjustable to and from the chuck and adapted to face the upper surface of a spider carried by the chuck, a lower facing cutter-head disposed below the support of the spider and arranged for vertical adjust ment and adapted to face the lower surface of the spider, an upper feed-shaft mounted horizontally in the rail and saddle, a rack and pinion operatively connecting the upper feed-shaft with the upper facing cutter-head whereby the turning of the shaft may feed the cutter-head to the spider, a lower feedshaft journaled horizontally in the bed, and a rack and pinion operatively connecting the lower feed-shaft and lower facing cutterhead whereby the turning of the shaft may feed the lower facing cutter-head upwardly to the spider, combined substantially as set forth.

22. A wheel machine comprising, a bed, a pair of housings projecting upwardly therefrom, a chuck-spindle ournaled in the bed, a. chuck carried by the upper end of the chuck-spindle and adapted to give vertical support to a spider and provided with a circle of inwardly acting chuck-jaws adapted to grip the supported spider, a rail supported by the housings over the chuck, a saddle supported by the rail, an upper facing cutter-head carried by the saddle and vertically adjustable to and from the chuck and adapted to face the upper surface of a spider carried by the chuck, a lower facing cutterhead disposed below the support of the spider and arran ed for vertical adjustment and adapted to face the lower surface of the spider, a lower cutter-head spindle journaled within the chuck-spindle and extending below the same and capable of vertical motion, a step-bearing for the lower cutter-head spindle, racks projecting upwardly from the stepbearing and guided in the bed, a lower feed-shaft journaled horizontally in the bed, and pinions on said lower feed-shaft engaging said racks, combined substantially as set forth.

23. A wheel machine comprising, a first cutter-head and a second cutter-head adapted to be fed toward each other, a pivoted gage-lever adapted to be moved with the first cutter-head to indicate a position to which the first cutter-head has been fed, a pivoted gage-lever connected with the second cutter-head and serving. to determine its degree of feeding-motion, a sliding gagerod extending between the two gage-levers and adapted to be moved in one direction by the gage-lever of the first cutter-head, means independent of the first cutter-head for moving the gage-rod in the opposite direction, means for temporarily fixing the gage-rodin the position to which it may have been moved by the gage-lever of the first cutterhead, and connections between the gage-rod and the gage-lever of the second cutterhead to cause the feed of the second cutterhead to be limited in accordance with the fixed position of the gage-rod, combined substantially as set forth.

24. A wheel machine comprising, a first cutter-head and a second cutter-head adapted to be fed toward each other, a pivoted gage-lever adapted to be moved with the first cutter-head to indicate a position to which the first cutter-head has been fed, a pivoted gage-lever connected with the second cutter-head and serving to determine its degree of feeding-motion, a sliding gage-rod extending between the two gage-levers and adapted to be moved in one direction by the gage-lever of the first cutter-head, means independent of the first cutter-head for moving the gage-rod in the opposite direction, means for temporarily fixing the gage-rod in the position to which it may have been moved by the gage-lever ofthe first cutter-head, means operative between the gage-rod and the gage-lever of the second cutter-head to cause the feeding movement of the second cutter-head to be arrested in position determined by the fixed position of the guide-rod and an adjusting screw for determining the efi'ective length of the gage-rod in its relation to the two gage-levers, combined substantially as set forth.

25. A wheel machine comprising, a first cutter-head and a second cutter-head adapted to be fed toward each other, a pivoted gage-lever adapted to be moved with the first cutter-head to indicate a position to which the first cutter-head has been fed, a pivoted gage-lever connected with the second cutter-head and serving to determine its degree of feeding-motion, a sliding gagerod extending between the two gage-levers and adapted to be moved in one direction by the gage-lever of the first cuttenhead, means independent of the first cutter-head for moving the gage-rod in the opposite direction, means for temporarily fixing the gage-rod in the position to which it may have been moved by the gage-lever of the first cutterhead, an arm secured to the gage-rod and projecting into the path of movement of the gage lever of the second cutter-head, and an adjusting screw operating between the arm and the gage-lever of the second cutter-head, combined substantially as set forth.

26. A wheel machine comprising, a chuck for the support of a spider, a cutter-head adapted for the facing of the spider, radially movable chuck-jaws for centering and holding the spider, a pivoted lever forming a part of each chuck-j aw and provided with a spur projecting inwardly between the chuckbody and the plane of the pivot on which the lever is mounted so that outward pres sure on the spur will. tend to move the spur toward the body of the chuck, stops to limit the motions of the spurs toward the body of the chuck, springs tending to urge the spurs away from the chuck-body, and stops to limit the action of the springs, combined substantially as set forth.

27. A wheel machine comprising, a chuck for the support of a spider, a cutter-head adapted for the facing of the spider, radially movable chuck-jaws for centering and holding the spider, a pivoted lever forming a part of each chuck-jaw and provided with a spur projecting inwardly between the chuck-body and the plane of the pivot on which the lever is mounted so that outward the springs, combined substantially as set pressure on the spur Will tend to move the forth.

spur toward the body of the chuck stops to limit the motions of the spurs toivard the JOHN GARDNER body of the chuck, springs tending to urge Witnesses:

the spurs away from the chuck-body, and. A

M. S. BELDEN, screws for adjustably limiting the action of CHARLES VOLLBEOHT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, I). C.

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