US1330086A - Rammer - Google Patents

Description

D, C. MULVIHILL.

HAMMER.

APPLICATION FILED JULY 3, l9l9.

1,330,086. Patented Feb.10,1920.

'zsHEETs-SHEET 1.

Inyefzar:

D. C. MULVIHILL.

HAMMER.

APPLICATION FILED IULY3. 1919.

l ,330,086. Patented Feb. 10, 1920.

2 SHEETS-SHEET 2.

UNITED sTATEs PATENT oEEIoE.A

DANIEL C. MULVIHILL, or HANNIBAL, MISSOURI.

RAMMER.

Specification of Letters Patent.

Patented Feb. 10, 1920.

Application led .Tuly 3, 1919. Serial No. 308,555.

vision of a rammer or weight which may be placed upon the top of a cope, such as disclosed in a copending application filed by me June 23, 1919, for a mold forming apparatus, Serial No. 306,050, and which is also described in said application. The object of the rammer is'to obviate the necessity of hand tamping or repressing the sand in the portions of the cope referred to bel tween the partitions or bars therein disclosed.

In the accompanying drawings: Figure 1 is a plan view of the device; Fig. 2 is a section taken on the line 2 2 of Fig. 1; Y

Fig. 3 is a side view of the device seated upon the table of a jolting machine; and

Fig. 4 is a bottom plan view of the ram- VThe invention is illustrated in connection with the molding of car wheels, and 10 of Fig. 3 represents the table of any usual type of jolting machine. 11 is the base of a stripping plate, the details of which are disclosed in my copending application above referred to. 12 is a stripping ring for use with such plate, and 13 designates steady pins placed through projections 14 on the chill 15 which forms a part of the cope. 16 is the internal ring of the cope, saidcope comprising ring 16, an innerpring 17, and partitions or bars 1,8. These bars, as well as ring 17, are preferably chamfered at their lower edge, as indicated at 19 and 20, Fig. 2.

' The urpose of the bars or partitions is the `division of the sand into smaller masses which may be compacted sufcientl to prevent drops when the form is lifte At 21 is indicated a gate-forming implement, the details of which are disclosed in my copendn ing application above referred to. A weight or rammer, as 22, which forms the special subject-matter of the present invention, may take the form illustrated in Figs. 2 and 4. When so constructed the rammer comprises an annular ring, as 23, with blocks, preferably of wood, as 24, secured to its lower sur# face, as by screws 25. The blocks are so located `and proportioned as to size as to leave channels, as 26, between them when se cured to the ring, which channels, when the When the cope is placed upon the jolting machinev and filled with sand, and the ram* mer placed upon the top of the cope, it will, by the mere action of the jolting machine, compact the sand sufficiently so that the mold may be stripped from the pattern and lifted successfully without the occurrence of drops.

I claim as my inventionn l. `The combination of a cope having bars separating the space within the cope into compartments, a weight having projections thereon adapted to enter said compartments and compactv the sand when i thek cope is jolted. v

2. The combination of a cope divided into compartments open at the top, and a weight having projections adapted to enter said compartments and compact the sand therein.

3. A weight comprising an upper weighting member, and projections on said member separated from each other adapted to enter compartments of a cope.

4. A rammer comprising an annular weighting ring, blocks secured to the lower surface of said ring, said blocks separated i from each other forming channels adapted leave channels between they blocks, such channels adapted to fit overthe bars of a cope.

DANIEL c. MULvIHILL.

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