US1167535A - Means for making bowling-pins. - Google Patents

Description

R. E. STANLEY.

NEANs ron NNNlNe BOWLING PINS.

Patented Jan. 11, 1916.

APPLICATION FILED AUG. I4 1915.

N. fg 4%3 RE, S TAN/LEY COLUMBIA PLANMRAPH co., WASHINGTON, D1 c.

iE STATES PATENT @FENCE RICHARD E. STANLEY, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR Oli ONE-HALF TO CHARLES LUTZ, F PITTSBURGH, PENNSYLVANIA.

MEANS FOR MAKING BOWLING-PINS.

Application led August 14, 1915.

To all ywhom t may concern.'

Be it known that l, RICHARD E. STANLEY, a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and use 't'ul improvements in Means for Making BowlingePins, of which the following is a specification, reference being had to the accompanying drawings.

'ibis invention relates to improved means 'for making bowling pins and more particularly to means 'or manufacturing a hollow cast metal bowling pin of the character dis closed in my prior Patent, No. 1,144,078, issued J une 22, 1915.

lt is the primary object of the present invention to devise certain improvements for casting hollow metal bowling pins wherein means are employed in the construction of the sand core to support the pin properly in place within the mold so that a continuous wall of the requisite thickness will be formed when the metal is poured, the sustaining means :tor the core resulting in the provif sion of a single opening in the base of the pin through which the sand may be removed.

lt is another object of the invention to provide in the practice of my invention, an anchoring lug which is made up in the head of the sand core and is provided with an extension serving to support the core in place, said extension being cut oil' after the pin has been molded, whereby the anchoring lug is centrally fixed in the pin head and projects interiorly thereof.

T he invention has for still another object to provide certain improvements for the construction of hollow metal bowling pins, whereby the same will have a continuous one-piece metal wall, said method embodying the use of means which is simple and inexpensive and enables the sand core to be quickly and accurately set in place in the mold flask.

lWith the above and other objects in view, my invention consists in the novel features ol construction, combination and arrangement of parts to be hereinafter more fully described, claimed and illustrated in the accompanying drawing, in which,

Figure l is a horizontal sectional view through the molded pin and the sand core, showing the mold flask open and the anlchoring pin in place; Fig. 2 is a vertical Specicaton of Letters Patent.

Patented Jan. lll, i915.

Serial No. 45,519.

section through the pin and sand Fig. 3 is a detail perspective view Chorin g lug or pin.

ln carrying out my present improvements for the manufacture of hollow cast metal bowlingl pins, the sand core indicated at 5 1s tiret termed in the usual manner, the sand being sustained in compact form and prevented from crumbling ai'ter it is baked, by means of a longitudinally disposed, metal rod 5 which projects beyond the base oi' the sand core. A cylindrical sand print 7 is formed around this rod extension and provides means for supporting the core at its core; and of the anbase in the mold. ln the other or head end of the sand core, the anchoring lug or pin, generally indicated at 8, is embodied when the core is formed. rlhis pin has an enlarged flared portion 9, preferably of rectangular cross-sectional form, and a reduced tapering extension l0 projecting from the end Jface of said iared portion. The portions 9 and 10 of the anchoring pin are wholly disposed within the head of the sand core. The long, cylindrical portion ll of the pin projects longitudinally :trom the end oli' the core head, and immediately contiguous to the flared end of the anchoring pin, the part ll is pro vided upon opposite sides with l'ieshaped grooves or channels 12, The length of these channels is preferably, (in the casting of duck pins) one-quarter of an inch.

ln setting up the baked sand core in the mold, the sand print extension Z on the body of the core is seated in one end of the base section 13 of the mold. The extension 11 of the anchoring lug or pin in the head of the core is seated in the opposite end wall of the mold, it being understood that the Outer ends ot' the divergent portions of the grooves l2 are in line with the inner face of the end wall of the mold so that the distance between the same and the head of the sand core will be one-quarter of an inch. The configuration of the inner faces of the sections of the mold is, ot' course, the same as that or" the outline oi' the sand core. ln the ordinary bowling pin of this type, the sand core, when mounted in the mold as above stated, will be sustained in proper spaced relation to the walls ot' the flask, the distance between which is of an inch, except at the head end ot the pin where the thickness oi the wall is to be one-quarter of an inch in order that the pin will be properly balanced. The tapering extension 10, projecting longitudinally in the sand core, serves to further sustain the weight of the core body and prevent breaking up of the sand. The mold section 14 is now closed upon the base section 13 and the molten metal is poured. The pins are formed of aluminum, and the cast metal flows between the sand core and the wall of the mold and entirely lills this space. The molten metal flowing around the anchoring pin 8 enters the grooves l2 in the opposite sides of said pin. Thus, when the metal sets and hardens, the anchoring lug is firmly secured in place within the head wall of the pin. The lug or pin 8 is also formed of aluminum.

It will be noted that, by the provision of the sand print extension 7 on the base of the core, an opening, indicated at 15, will be formed in the base of the hollow metal pin after it is cast. TWhen the molded pin is removed from the flask, the sand will be removed from the interior of the hollow pin through this opening 15. The outwardly projecting portion ll of the anchoring lug in the head of the cast pin is now cut oi along the line o-a in Fig. l. The iiared anchoring lug 9, which remains in the head of the pin, may be of such size that the pin, after being molded, will be oil the requisite standard weight. If it is necessary, however, to increase the weight of the cast metal pin, molten lead may be poured into the head thereoiI through the opening 15 in the base of the pin. This lead solidifying around the pin or lug 9, will be immovably held in place.

From the foregoing description, it will be understood that, by casting the pins in accordance with my improvements and using the anchor in the head of the pin for the purpose of supporting the head of the core in proper position in the mold, the necessity of employing spacing elements between the sides of the core and the walls of the flask is obviated, so that the pins may thus be cast with a continuous one-piece metal wall.

My invention may be carried out in practice at very small expense, and by eliminating the necessity of casting-the hollow pin in two or more sections to be welded or otherwise united, a commercially superior article is produced, as the pin will obviously be of greater durability and will not decrease in weight after long, continued use.

In the accompanying drawing, l have shown a duck pin of that type wherein the belly of the pin is adapted to be provided with a. circumscribing rubber band. 1t is, however, understood that my invention may be utilized in the construction of hollow metal pins without this circumferential band receiving recess, and can also be advantageously employed in the manufacture oi' the larger tenpins.

Having thus fully described my invention, what I desire to claim and secure by Letters Patent is 1* s Means for making hollow cast metal bowling pins including a sand core provided with a print extension on its base, a longitudinal rod embodied in the core and extending Y through the extension and into the core body, and a lug extending into the head of the core and terminating in longitudinal spaced relation'to the core rod, said lug having an extension projecting beyond the head of the core and provided with a l!- shaped grcove to receive the poured metal, said extension of the lug and the print eX- walls thereof.

In testimony whereof l hereunto aiiix my Y lVitnesses:

1. W. ENG-LAND, VILLIAM Pow.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents Washington, D. C.

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