US721730A - Art of coring openings in the walls of cast hollow ware. - Google Patents

Description

P-ATENTBD MAR. 3, 1.903.

l P. J. MCGUIRB. ART or GORING OPENINGS,l 1N THB WALLS of GAST HOLLOWWARE;

.N0 MODEL.

',FIGJ.

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VVAITNESSES wm@ Tommy mr' UNITED STAT-Esi PATENT OFFICE.

PETER J. MCGUIRE, OF BLAIRSVILLE,v PENNSYLVANIA, ASSIGNOR TO THE CHAMPION SANITARY ENAMEL WARE CO., A CORPORATION OF PENN- SYLVANIA.

ART OF CORING OPENINGS IN THE WALLS F CAS-TKHOLLOW WARE.

SPECIFICATION forming part of Letters Patent No. 721,730, dated March 3, 1903,

' Application led Augustlll. 1902i. Serial No. 119,606. (No model.)

To @ZZ whom/ z3 may concern:

Be it known that I, PETER J. MCGUIRE, a citizen of the United States,residing at Blairsville, in the county of Indiana and State of Pennsylvania, have invented a new and use-` ful Improvement intheArt of Ooring Openings in the Walls of Cast Hollow Ware, of which improvement the following `is a specication.

the art of coring the overflow and water-service openings in the rear of cast bath-tubs.

Heretofore it has been the custom to form` then filled with green sand and slicked otf flush with the outer surface of the gage, after which operation said gage is carefully removed, leaving the projecting cores of green sand. This manner offorming the cores has 3o its attending disadvantages, in that the re' moving of the gage must be accomplished with the greatest of care and by a skilled workman o`r portionsof the cores vthus formed will be broken away by the sand sticking to the openings in the gage, or ifthe workman be nervous the least tremor will suffice to dame' age the cores in removing the gage, which in either case will require dressing up of the cores. This dressing up of the cores will in 4o many instances be required of the Workman, no matter how skilled in the art he may be, thereby consuming time and increasing the cost of production. Furthermore, green-sand cores which are of comparative small area and having sharp edges dry out quickly and crumbl'e away if exposed for any length of time to the heated atmosphere, thereby making an imperfect opening in the casting.

With lny improvement in the art I am en- This invention relates to improvements inV abled to produce bath-tub castings having clean-cored openings therethrough, avoid the disadvantages heretofore encountered in green-sand cores, and consequently reduce the labor and expense of manufacture.

In the accompanying drawings I have illustrated :the manner and'means employed in carryingout my improvement, in which drawings- Figur-el isran end view of the drag portion of the mold, partly in' section,vshowing the practice of my invention. Fig. II is a side view of a portion of the same, also partly in section. Fig. III is a perspective View of the cores, and Fig. IV is a plan view of the gage or templet for setting said cores.

In the practice of my invention I provide baked cores I, 2, and 3 of the required diam eters and thickness, through each of which is inserted a nail or pin 4. I then apply to the end of the mold 5 the gage or templet 6, which is provided with openings of such size as to permit an easy insertion of the cores therein. The cores are then inserted in said gage-openings and the nails or pins forced into the moldwall iiush with the outer surface thereof, af-

ter which the gage is removed without the least difficulty, leaving the cores in position upon the mold-wall.

It is readily apparent from the foregoing description that this manner of coring the openings in the tub is accomplished in much less'ti me and at less expense than in the manner heretofore practiced and produces much more perfect openings, that the cores will not crumble fromexposure to the heated atmosphere by the removal of the gage or by the closing of the other mold member thereover,

and that one not skilled in the art may as easily and quickly setthe cores as one who is skilled. i

,Having thus fully described my improvements, what I claim, and desire tosecure by Letters Patent, is A v l. The herein-described method of coring openings in the walls of cast hollow wares,

which consists, after the mold members have been formed and removed from the pattern, in temporarily applying a gage to the wall of ro one of said mold members to determine the position of said cores relative to the mold, and then pinning baked-sand cores to said mold at the points so determined by said gage.

In testimony whereof I have hereunto signed my name in the presence of two subx5 soribing Witnesses.

PETER J. MCGUIRE. In presence of- COULTER WIGGINs, D. M. KIER.

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