US1331736A - Apparatus for molding greensand piston-cores - Google Patents

Description

T. E. WOOD.

I APPARATUS FOR MOLDFNG GREENSAND PISTON CORES. APPLICATION FILED MAR. 27, I9l9- RENE WED NOV. 25, 1919,

1 ,33 1 73 6 Patented Feb. 24, 1920.

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T. E. WOOD. APPARATUS FOR MOLDING GREENSAND PISTON CORES.

.- APPLICATION FILED MMLQT. l9l9- RENEWED NOV. 25, 1919.

Patented Feb. 24, 1920.

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. m2; ,uillllfl I UNITED sTA'rE-s orrion.

rrHomAs E. WOOD, or GREAT FALLS, MONTANA, AssmNon o woo'n a snrronn p MACHINE WORKS, or GREAT FALL TANA.

APPARATUS FOR MOLDING Application filed March 27-, 1919, serial No. 285,407. neneweenmmber 25,1919;-

To 'a'llevkomtt'maymmam-f Be it known t hat l', 'THo-M-As E. WooD, a citizen of the United States, residing at Great Falls, in the county of Cascade and State of Montana, have invented certain new and useful Improvements in Apparat-us for Molding Greensand Piston-Cores,

neoted with removable supporting rods,

whereby piston boss cores 1 of different shapes and sizes may be employed and may be located at p'ointsspacedat different distances from the enclof the cylinder core.

' A further object "of the invention is to provide means whereby the length of the green s'anjd core may be adjusted.

A further object oi the invention is to provide apparatus of the above-mentioned haracter, which may be operated conveniently and rapidly.

' iO'ther' "b'edts and advantages of the invention will be apparent "during the course oi'thefollowing description. 7 I

In the accompanyingdrawings forming a part of this specification and in'which like numerals" are employed to designate like partsthroughout the same;

- Figure 1 is a central vertical longitudinal sec ion'al view through apparatus ernhoclying my invention;

Fig. "2 is a horizontalsectional view, taken on line 2- 52 of Fig. 1.;

Fig. 3 is a similar View, taken on line 33 of Fig. 1;

Fig. 4: is a longitudinal sectional View, taken'onl'ne4- 4 of Fig. '1;

Fig.5 isla View similar to Fig. 1, with the inner pattern elements partly removed from a the casing;

Specification of Letterslatent.

s, monmnnn commuter: or MON- GREENSAND PISTO -corms.

Patented Feb. 24.,- 1920;

set-n1 m. ausea;

6 is a perspective view of til-1e re movable pattern carrying Fig. 7 is a similar view of carryingbar, showing adifferent number of pattern rings secured thereto; and,

Fig. 8 is a perspective view of the head attern.

In the drawings, wherein for the purpose ofillu'stration' is shown a preterred em-bodi- Inent of my invention, the numeral 10 designa'tes an outer cylindrical pattern oas ng, which may be ver tical lywiranged l in use, but the invention is in no sense restricted to this arrangement. Theouter pattern casing 10 has both ends open, and is provided, as

' more clearly shown in Fig. 2, with a pair of; longitudinal interior grooves 11, removebly receiving pattern carryinv bars or elem-rents 12, adapted to slide longitudinally therein. There are preferably they are provided" with semi-circular skirt reinforcing patterns 13, rigidly secured thereto, by welding or thelike, or they may be formed integral with "the bars 12.- The numeral 14 designates reinforcing rihipot terns, which are preferably 'sem-i oircular and carried by the bars 12. These'patterns 14 are preferably formed integral with the bars 12, but may be detachable'if desired. Figs. 1, 4', 5 and fi, 1 have-shown oneset of the-patterns 14, while in Figs. 7,1 have shown the bar 12 provided wrthtwo patternsl l, it being 'underst'oodthat twee! rnole sets or these patterns may be enie ployedflf desired. Y

The numeral 1'5 de's-igiutte's wrist pin-boss patterns, which may I e of any suitable shape or "size. These patterns 1' 5 arepreifl erably provided with openings 16, receiving screws 17, adapted to have screw threaded engagement" within seleoted" openin*gs'18,"f0r1ned in the bars. It-"isthu's seen that the patterns 15 are readily" removable and may be longitudinally adjustedupon the bars- 12 and conneoted there'v'vith in ad jnstment at difier'ent longitudinal tions. 7 v

The numeral 19 designates ring? reinforc'ement sleevepattern which 'isslidably mounted within the outer casing patter-1i 10 to be adjusted longitudinally therein and removed theretfwm. sleeve patter-11 .1%!

the 'patitem two of these bars, and

within the sleeve pattern 19, and is ad ust able therein and adapted to V be removed therefrom. The inner end of this head pattern 20. is closed by an end 21, the pattern being preferably hollow. The end 21 carries internal reinforcing rib patterns 22,

which may be formed integral therewith, and the head pattern is further provided with a pair of longitudinal slots 23 for receiving longitudinal internal reinforcing rib patterns 24. These rib patterns are arranged to contact with the fore-shortened ends of one pattern 22 and contact with the boss patterns 15, thereby forming longitudinal internal reinforcing ribs ,in the molded piston which connect the piston bosses and the head of the piston. The patterns 24 may be removed from the grooves 23.

' The operation of the apparatus is as follows:

With theelementsof the apparatus as sembled as shown in Fig. 1, the green sand may be introduced into the same and suitably tamped. The apparatus may be supported by placing the hollow head pattern 20' upon a post or upright, and after this tamping action, the outer casin pattern 10 may be moved downwardly wit respect to the inner pattern elements, as indicated in Fig. 5. This downward movement of the outer casing pattern element may be con tinued until it has moved downwardly beyond the lower ends of the bars '12. The bars 12 and the pattern elements carried thereby may now be removed from the green sand core. The ring reinforcement sleeve pattern 19 may now be moved downwardly with relation to the head pattern 21, thereby separating these elements, and leaving the green sand core entirely supported by the head pattern 20. The patterns 24: may now be removed from the head pattern 20. The green said core is now removed from the head pattern and may be placed within the mold, of the desired diameter. The casting of the cylinder will then proceed in the usual manner. The diameter of the piston cast will be regulated by the diameter of the mold, while its length will be controlled by the adjustment of the head pattern 20 within the pattern 19,

It is to be understood that the form of my invention herewith shown and described is to be taken as the preferred example of.

7 within the grooves, and wrist pin boss patterns detachably connected with the bars.

3. In apparatus of the character described, an outer pattern casing provided with longitudinal grooves, bars slidable within-the grooves, and wrist pin boss patterns adjustably connected with 'thebars.

In apparatus of the character described, an outer pattern casing provided with inner longitudinal grooves, bars adjustably mounted within the grooves, and patterns carried by the bars.

. 5. In apparatus of the character de-" scribed, an outer pattern casing, patterns arranged therein, and supports forthe patterns having adjustable connection with the outer pattern casing. v

6. In apparatus of the character described, an outer pattern casin bars ar ranged therein and adapted to e longitudinally adjusted with relation thereto, patterns carried by the bars, a ring reinforcement sleeve pattern longitudinally adjustably mounted within the outer pattern vcasing'and disposed inwardly of the bars, and a head pattern for the outer" pattern casing.

7 In apparatus of the character described, an outer pattern casing, supporting elements arranged therein and adapted to move longitudinally with relation thereto,

patterns carried by'the supporting elements,-

a ring reinforcement sleeve attern longitudinally movably mounted outer pattern casing, and a head pattern longitudinally movably mounted within the ring reinforcement sleeve pattern.

8. In apparatus of the character described, an outer pattern casing, wrist pin boss patterns arranged within the outer pattern casing and adapted to move longitudinally with relation thereto, a ring reinforcement sleeve pattern longitudinally movably mounted within the pattern casing, and a head pattern longitudinally movably mounted within the ring reinforcement sleeve pattern. I

within the V 9.111 apparatus of the character d escribed, an outer pattern casing, wrist in boss patterns adapted to be arranged witliin the outer pattern casing, a head pattern movably mounted within the outer pattern casing and provided. With longitudinal grooves, and longitudinal internal reinforcing rib patterns arranged Within the grooves and extending to the wrist pin boss patterns.

10. In apparatus of the character described, an outer pattern casing, Wrist in boss patterns adapted to be arranged Wit in 10 the outer pattern casing, a head pattern longitudinally movably mounted Within the outer pattern casing and provided at its end with transverse reinforcing rib patterns and having longitudinal grooves, and longitudinal internal reinforcing .rib patterns 15 THOMAS E. WOOD.

Witnesses:

- H. O. MERRITT, LA RUE SMrrH.

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