US1282012A - Apparatus for casting anchors. - Google Patents

Description

F. BALDI, IR. APPARATUS FOR CASTING ANCHORS.

APPLICATION FILED MAY I8. IQIB.

WITN ESS sov "Anchors, of which the v cation.

FREDERICK BALDI', JR., or TARENTUM, .PENNSYLVANIA APPARATUS FOR CASTING ANCHORS.

rasante..

Specication of Letters Patent.

Patented @cit-15, i918.

Application led May 18, '1918. Serial No. 235,265.

To all whom z't may concern:

Be it known that I, FREDERICK BALDT, J r., citizen of the United States, and residing in the borough of Tarentum, in the county of Allegheny and State of Pennsylvania, have invented or discovered new and useful Improvements in Apparatus for Casting following is a specifi- My invention comprises a new and improved apparatus for casting the heads of stockless anchors. v In the accompanying drawings, which are merely intended to illustrate the principles of my Ainvention without limiting the scope of the same to the construction shown, Figure l is an inside face view of one of the permanent mold halves showing mounted therein one of the sand core halvesl for form ing the central recess in the head, while Fig. 2 is a central vertical cross-.section of the assembled mold ready for the pouring.

The following is a detailed description of the drawings.

A andB represent the two halves of the permanent mold, adapted to be properly positioned together, as by means of the dowels l. The mold halves are preferably pro- .vided with side flanges 2 for convenience inhandling. Each of said mold halves'is pro'- vided on its inner face with the necessary hollow o r depression 3, vso that when the mold vhalves are assembled and the metal poured, the head of' the anchor and its 1ntegral linkes will be formed.

The type of anchor for which my invention is especially inten-ded is the stockless anchor wherein the shank or stem is pivotally attached in a central recess in the head.

This recess I form by means of a sand core made in two similar halves C, one of which is mounted in each of the permanent mold halves. rIhe inner end of each of the core halves is provided with a foot 4, which iits into a corresponding print 5 in the permanent mold half. Each of said core halves is provided with one half 6 of a pouring gate which extends up through a correspending half 7 of a hole formed in each permanent mold half, so that when the mold is assembled, a pouring gate is formed eX- tending down from the top of the mold into the sand ,-core. From the inner end of the pouringfgate, branches extend through the ,sand core to distribute the metal tc either end of the headrthese branches being formed 1n two halves 8 in each of the said core halves, as shown in Fig. l.

The sand core is provided with an opening 9 at either side for the flow of the metal to form the -side walls of the central recess in the head, connecting the end portions of the head together.

The lower end of the core, at either side of the feet 4, is rounded off, as at 10, to form 'semi-circular or arc-shape internal shoulders in the recess upon which the cylindrical cross head of the shank is to bear and rotate. i

I prefer to provide additional means for pivotally attaching the shank or stem to the head, consisting of a pivot pin or shaft eX- tending through a longitudinal hole in the head and an alined hole in the shank, such latter hole being concentric with the cylindrical cross head of the shank or stem. The longitudinal hole in the head I form incasting bv means of two lengths of iron pipe 11,

f tamped full of sand, having their outer ends stepped in prints 12 in the permanent mold halves and their inner ends stepped in similar prints 13 in the sand core. In Fig. l, I show these pipes sectioned longitudinally for the sake of clearness but it will be understood that the pipes are each complete in one piece. fOt course, if desired, the cylindrical sand cores may be substituted for the pipe, but I prefer the latter for the `sake of convenience and time saving.

Each permanent mold half is provided with one half 14 of ay feed hole at either side of the pouring hole, so that when the mold is assembled, an opening is formed at either end extending up from either end of the main cavity 3. These holes are preferably provided with a lining consisting of sand core halves l5 to save the permanent mold.

- To permit shrinkage and the escape of gas, along the inner edges of the portions of the cavity 3, wherein the linkes are cast, I prefer to provide recesses 16 in the mold halves, which recesses are tamped full of sand to form the inner edge wall of the fluke olds when the permanent mold is assem- In practice, the core halves C are mounted in the permanent mold halves, the pipes ll are placed in position in one of the sand core halves, the recesses 16 'are tamped full of sand and the linings l5 are placed in the openings or grooves la. rIhe mold halves naeaoia are then assembled and the metal poured,

through the gate 6 until the ilow oic metal up through the holes la shows that the mold is full. rThe pouring then ceases and the casting is allowed to harden. rl`he permanent mold ris then taken apart and the casting removed. The sand core is then tapped out of the central opening in the hea-d and the neck of metal, solidified in the gate 6 and the branches 8, is removed and the neck of metal in the test holes broken on. The pipes ll may be removed or the sand tapped out of the same. lhe casting may then be nished and annealed.

I prefer to leave the pipe ll in place and tap the sand out of the same, so that the pipes form the lining ot the pivot pin hole, but if desired the pipes may be removed bodily from the casting.

rl`he advantages of my improved apparatus are manifold. Among them may be mentioned the saving in time and expense of preparing a fresh sand mold for each anchor. Also the product is more uniform and accurate in dimensions and parts, and the permanent mold may be used over and over again with no impairment of product.

TWhat l desire to claim is l. Apparat-us for casting the heads of stockless anchors consisting of a tivo part permanent outer mold having an internal cavity for forming the head and nukes, and a sand core tor forming the central recess in the head, said sand core being in two parts, one part of the same being mounted in each of said permanent mold halves, substantially as described.

2. Apparatus for casting the heads of stockless anchors consisting of a two part permanent out-er mold having an internal cavity for forming the head and tlukes, and a sand core mounted Within said permanent mold for forming the central recess in the head, said sand core being in tivo parts, one

-.-. part of the saine being mounted in each or said permanent mold halves, and the core being provided with a pouring gate extending downwardly from the top of the mold E a .n .L ,L .4.

ior the admission or the metal to the mold, substantially as described.

3. Apparatus :tor casting the heads of stoclrless anchors consisting of a tWo part permanent outer mold having .an internal cavity :tor forming the head and tlukes, and a sand core mounted Within said permanent mold for forming the central recess in the head, said sand core being in tvvo parts, one part of the same being mounted in each of said permanent mold halves, and the core being provided with a central pouring gate extending downwardly from the top oit the mold, and lateral branches at the bottom of said gate forA .the distribution of the metal to the permanent mold, substantially as described.

4. Apparatus for casting the heads of stockless anchors consisting of a. tivo part permanent outer mold having an internal cavity tor forming the head and nukes, and a sand core mounted Within said permanent mold for forming the central recess in the head, said sand core being in tivo parts, one part o the same being mounted in each of said permanent mold halves, and the core being provided with a gate extending downwardly from the top of the mold for the admission of the metal into the permanent mold and the permanent mold being provided at its ends With feed holes at either side of the gate, substantially as described.

5. Apparatus for casting the heads of stoclrless anchors consisting of a tivo part permanent outer mold having an internal cavity for forming the head and tlukes and said cavity being provided with recesses along the inner edges of the 'lukes to be packed With sand, and a sand core mounted Within said permanent mold for forming thecentral recess in the head, said sand core being in tivo parts, one part of the same being mounted in each of said permanent mold halves, and the -core being provided with a gate extending downwardly from the top of the mold tor the admission of the metal into the interior of the permanent mold, substantially as described.

Signed at Pittsburgh, Pa., this 11th day of May, 1918.

FRDERCL BALDT, Jn.

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