US717538A - Method of manufacturing car-wheels. - Google Patents

Description

l PATENTED JAN. 6, 1903. lII. C. BUHOUP & G. P. RITTER. METHOD 0F MANUFACTURING GAR WHEELS.

2 SHEETS-SHEET 1.

A-rPLmAtrIoN FILED SEPT. zo, 1902. No MODEL.

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No. 717,538. PATENTBD JAN. 6, 1903. H. C. BUHoUT & G. P. RITTER.

METHOD 0E MANUFACTURING GAR WHEELS. ATPLIoATmN TTLED SEPT. 2o, 1902. No MoDL. 2 SHEETS-SHEET 2.

u @La is UNTRD STATES ATRNT FFICE.

HARRY C. BUHOUP AND GILBERT P. RITTER, OF CHICAGO, ILLINOIS.

METHOD or MANUFACTURING CAR-WHEELS.

:SPECIFICATION forming part of Letters Patent No. 717,538, dated J' anuary 6, 1903.

Applicationfiled September 20, 1902. Serial No. 124,245. (No model.) y

T0 all whom, it may concern.-

Be it known that we, HARRY C. BUHoUP and GILBERT P. R1TTnR,citizens of the United States, and residents of Chicago, in the county of Cook, State of Illinois, have invented certain new and useful Improvements in Methods of Manufacturing Car-Wheels; and we hereby declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to practice our invention.

Our invention relates to lthe manufacture of car-wheels, and especially to cast-steel car- Wheels, and has for its object the production of cast-steel car-wheels having a condensed uniform tread.

To this end our invention, generally stated, comprises the several steps of first Vcasting the Wheel with a diameter somewhat greater than desired for the finished Wheel, next corrugating the tread of the wheel or indenting the same transversely, and finally rolling or otherwise reducing the diameter of the tread of the wheel by plain rolls or in like mauner, whereby a wheel havinga uniformly-condensed tread is obtained.

In carrying outour invention any suitable character of devices adapted to first corrugate or indent the tread of the Wheel and iinally compress and plain-finish the same may be employed-as, for instance, dies, rolls,` or rolling-dies; but for the purposes of this specification we have selected oppositely-disposed bed-dies.

In the drawings accompanying this specification, Figure l is an end elevation of apparatus adapted for practicing our invention. Fig. 2 is a vertical central section of the same. Fig. 3 is a View of the car-wheel as it passes from the corrugating or indenting devices and before it is subjected to the finishing devices, and Fig. 4 is a detached View of one of the die-plates.

Like symbols refer tol like parts Wherever they occur. i

A indicates a suitable housing provided below with a bed B and'above with a platen C, the latter adaptedl to travel vertically in the housing and controlled by a housingscrew or like means for exerting pressure on the platen. Journaled in the bed is a shaft b, provided with a pinion b', located within the bed, and at its end with a gear-wheel b2, and the platen C is also provided with a like shaft c, having a pinion c' and gear-wheel c2, the gear-wheels b2 and c2 meshing with an intermediate pinion d, whereby the said shafts b and c and their pinions are reversely rotated from the power-pulley D and pinion d.

Upon the upper face of bed B and vertically above the same on the platen C are dovetail Ways or guides e e and ff, in which travel reciprocating die-plates E and F, said die-plates having on their bed-faces racks with which mesh the pinions b and c of the shafts b and c for causing the reverse travel of the die-plates F. and F. The operative faces of the die-plates E and Fare provided With oppositely-disposed longitudinal grooves, the cross-section of which corresponds to the cross-section of the flange and tread of a car- .wheel, which grooves are transversely ribbed at intervals for a portion of their length Where they correspond to the tread of the car-wheel, as from to 0c', and shallow gradually for a certain portion of' the remainder of the distance, as from to y', while that portion of the groove which corresponds to the flange of the wheel may also gradually shallow and narrow between a. and 'y' froln the size of the Iiange of the casting to that ofthe nished wheel in order to force any surplus metal from the flange' into the tread of the wheel. The length and relative proportion of the corrugated and the plane portions'of the groove of the die-plate will be determined by the diameter of the wheel and the extent to which it is desired to carry thev respective steps of the method. The length of the respective die-plates will preferably be multiples 0f the circumference of the wheel.

Centered with relation to the housing and the die-plates and supported on the housings l or in other suitable manner are posts G, provided with guide slots or ways g to receive the ends of a mandrel H, which serves as the axis of rotation for the wheel under treatment.

I-I indicates a mandrel for the hub of the car-wheel blank, and h h clamps for confining the blank, the shaftjH being slotted at h and provided with Wedge keys I or equivalent means for confining the car-Wheel blank between the clamps and to the mandrel. |The IOO mandrel H, asbefore noted, serves as the axis ot' rotation ot' the blank when acted on by the dies. If it is preferred to journal the ends of the mandrel in xed boxes or pillowblocks in lieu of allowing them vertical movement in the slots ot' the posts G, the bed B, as well as the platen C, will have to be constructed to travel vertically and the bed as Well as the platen be provided with housingscrews in manner commonly practiced in rolling-mills.

The above-noted 0r other suitable devices for the purpose having been provided, a caststeel car-wheel blank at substantially a rolling heat is secu red on the mandrel H between the clamps 7th, and the mandrel H inserted inJthe slots g of post G, so that the periphery of the blank is in vertical alinenient with the grooves of the die-plates, said die-plates being drawn out to the extreme of their outward travel, so that the leading ends of the ribbed portions approach the vertical diameter of thewheel-blank. Thehousingscreworscrews are then manipulated to cause the required rolling pressure of the dies ou the periphery of the car-wheel blank, and the machine being set in operation t0 cause the travel of the dies the tread of the W-heel Will first be corrugated or indented transversely, and at the same time, if desired, the iiange may be reduced, so as to turn any surplus metal into the tread of the wheel, when immediately following the transverse indentation or corrugation of the wheel-tread the said tread will be subjected to the plain faces cf the dies, which will condense and finish the tread, reducing its diameter to that of the finished wheel. It will be noted that the corrugations in the periphery of the blank or tread of the wheel induce the condensation of the metal of the tread on substantially radial lines by the final plain rolling and finishing, as Well as limit the la teral or peripheral spread or drawing of the metal, and this is equally true no matter how the corrugations are produced, Whether by casting, rolling, die-rolling, or forging; but corrugating by rolling or die-rolling is deemed preferable, as productive of a more uniform condensation in the tread of the iinished wheel or blank.

Having thus described our invention, what we claim, and desire to secure by Letters Patent, is-

The method herein described for manufacturing car-wheels, which consists in first corrugating the tread of the Wheel-blank and finally condensing and finishing said tread, substantially as and for the purposes specied.

In testimony whereof we affix our signatures, in presence of two witnesses, this 13th day of September, 1902.

HARRY C. BUHOUP. GILBERT P. RITTER.

Witnesses:

EDWIN S. CLARKSON, JNO. Q. ADAMS.

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