US574748A - Harry y - Google Patents

Description

(No Mbdel.) 4

H. V. MOORE. COMBINED PATTERNAND GORE BOX.

Patented Jan. 5, 1897.

MW WW Witnesses Inventor Attorney Tn: NORRIS PEI-ER; n. menu-ma. wumnomu. v. C.

UNITED STATES PATENT OFF CE.

HARRY V. MOORE, OF HAMILTON, OHIO, ASSIGNOR TO F. d: L. KAHN & BROS, OF SAME PLACE.

COMBINED PA TTERN AND CORE-BOX.

SPECIFICATION forming part of Letters Patent No. 574,748, dated'J'anuary 5, 1897. Application filed $eptember l4, 18J6. Serial No. 605,709. (No model.)

To all whom it may concern.-

Be it known that I, HARRY V. MOORE, of Hamilton, Butler county, Ohio, have invented certain new and useful Improvements in a Combined Pattern and Gore-Box, of which the following is a specification.

My invention pertains to improvements in combined patterns and core-boxes for metalfounders use in the production of boxes having top and frontal openings, and the same will be readily understood from the following description, taken in connection with the accompanying drawings, in which-- Figure l is a vertical section of the combined pattern and core-box in condition and position ready to have the core-sand rammed into it; Fig. 2, a vertical section of the mold and core after the pattern has been withdrawn and the mold is put in position ready for pouring; Fig. 3, a perspective view of the pattern, this view serving also to illustrate the box which is to be produced by casting in the mold; and Fig. 4, avertical section of a half flask containing half the pattern and disposed on its follow-board ready to be filled and rammed.

In the drawings, confining attention for the present exclusivelyto Fig. 3, 1 indicates the pattern, similar in shape to the casting to be produced, the pattern being the same in character as the casting except that the pattern is parted, as hereinafter explained; 2, the front wall of the pattern; 3, an opening through this front wall; 4, the top wall of the pattern; 5, an opening through this top wall, openings 3 and 5 being therefore in planes at right angles to each other; 6, the upper portion of the pattern, and 7 the lower portion of the pattern, the portions 6 and 7 consti- Now, giving attention exclusively to Fig. 4 of the drawings, 8 indicates a follow-board on which is placed portion 6 of the pattern, the top wall 4 of the pattern, having the opening 5, being upward; 9, a half-flask set upon this around the opening 3, the outer edges of the walls of box 11 making contact with the inner surface of the front wall of the flask around opening 10 therein, box 11 resting on f0llowboard 8 and being open below to the fo1lowboard 5 12, a plate closing opening 5 in the top wall of pattern part 6; 13, a stool on the follow-board, within the pattern part 6 and supporting plate 5; 14, a stay fast on the follow-board and serving to hold the front of the pattern firmly up against the inner edge of box 11, the front wall of the pattern being thus clamped between box 11 and stay 14; 15, an anchor projecting from the lower surface of plate 12, which anchor will be later explained more fully, and 16 an anchor projecting from the upper surface of plate 12, which anchor will be later more fully explained.

The partsbeing in the position and condition indicated in Fig. 4, the front wall of the pattern is held rigidly up against box 11 and all is in condition for forming the half-mold. The half-flask is to be filled and rammed, plate 12 keeping any sand from reaching the'interior of the pattern through the top opening and box 11 keeping the sand from enteringthe pattern through the front opening 3. WVhen the half-mold has thus been rammed it is to be turned over and the follow-board Swith the stool 13 removed. The face of the mold is then to be dusted with parting-sand, this face being now uppermost and being the face which would be downward while the mold is being rammed. The lower portion 7 of the pattern, Fig. 3, is now to be properly set over the pattern portion 6, which is in the halfmold, the two pattern parts being doweled together, as is usual in parted patterns. Another half-flask similar to half-flask 9 and similarly provided with an opening 10, together with a similar box 11, is now to be set upon the completed half mold and sand rammed therein, as before. This operation has completed the mold proper ready for the ramming of the core. The completed mold, with its two halves properly clamped together, is now to be turned to the position shown in Fig. 1, with its opening 10 upwardly.

17 indicates the sand in the two half-flasks around the pattern and forming the mold. The interior of the pattern is now to be filled with sand through opening 10 and properly rammed flush with the upper surface of what is in the present position the top wall of the flask. Looking at Fig. 1 and considering it before the sand is put into the interior of the pattern, let us consider half-flask 19 as the cope and half-flask 9 as the drag, line 20 being the parting which separates these two mold parts and being also the line of parting between the two parts 6 and 7 of the pattern. After the sand has been rammed to, form the core the mold is to be turned to bring drag 9 uppermost. This condition may be best appreciated by properly turning Fig. 1 of the drawings so that drag 9 can be viewed as being the top of the drawing. Drag 9 is now to be lifted, after which portion 6 of the pattern is to be removed and the drag replaced. The mold is nowto be turned over, bringing cope 19 uppermost. By again turning the drawing it will be appreciated that pattern portion 7 is now at the top of the mold and that pattern portion 0 is absent, and that the core would be supported by the sand below plate 12, the plate acting as a support between the core and the mold-sand at the opening in wall it of the pattern. Cope 19 is now to be lifted, pattern part 7 is to be removed, and the mold closed by replacing the cope. This completes the mold, as seen in Fig. 2, and the mold is ready for pouring, the core being supported by the mold-sand under plate 12.

It is essential that plate 12 be present while the drag is being rammed, but it is not essential that it should stay in the mold. After the drag has been rammed and turned and the follow-board and stool removed the plate 12 may be removed and the mold-surface left by it in the cope may be dusted with partingsand, in which case, when the mold is completed ready for pouring, the core will not only be supported by but will be in direct parting contact with the mold-sand below it. But in practice cases will arise in which the core is very large in proportion to the size of theopening 5 in thetop of the box, giving considerable unsupported overhang to the lower corners of the core, making a weak core and also producing considerable floating tendency 011 the part of the core. In such cases plate 12 offers peculiar facilities for strengthening the core or for anchoring it to the mold or for doing both. In the drawings I have shown the plate as provided with an anchor 15 upon that surface of the plate which comes in contact with the core. This anchor may be extended into any desired direction or have any desired form to engage the sand within the core, and it may reach into whatever parts of the core may be found most in need of support. Plate 12 in such case serves at once as a filler for the opening 5 in the pattern, as a parting between the mold-sand and the core-sand, and as an anchor for increasing the structural stability of the core. But if it be found necessary to anchor the core to the mold to guard against its floating then anchor 16 on the outer surface of plate 12 may be employed, and it may have any form or mechanical c011- nections best suited to detaehablybinding the plate to the drag. In the drawings the anchor 16 is a mere stud projecting into the sand of the drag. This will be sufficient in many cases, while other cases may call for a further extension ofthis anchor, so as to receive a key or bolt, in connection with a cross-bar 011 the drag, as is common in the anchoring of cores.

I claim as my invention- 1. The combination, substantially as set forth, of a half-pattern portion in box form with an opening in its top, an opening in its front wall and an open bottom, a follow-board supporting said pattern portion, a plate closing said top opening, a half-flask resting on the follow-board and having inone of its walls an opening corresponding with the opening in the front wall of the pattern portion, a half box between the front wall of the half-flask and the front wall of the pattern portion around the openings therein, and a stay clamping the pattern against the inner edge of said box.

2. The combination, substantially as set forth, of a box-pattern having an opening in its upper Wall and an opening in its front wall and having a parting through the lastmentioned opening in a plane substantially parallel with the top wall of the pattern, two half-flasks inclosing said pattern and joining each other in a plane substantially parallel with said top Wall and having in their joint an opening opposite 'to and corresponding with the opening in the front wall of the pattern, and a metallic box with the edges of its walls in contact with the outer surface of the front wall of the pattern and with the inner surface of the corresponding wall of the flask around the openings therein.

3. The combination, substantially as set forth, of a box'pattern having an opening in its top wall and an opening in its front wall and having a parting through said latter opening substantially parallel with the plane of the top opening, and a plate in said top opening.

4. The combination, substantially as set forth, of a box-pattern havingan opening in its top wall and an opening in its front wall and a parting through said front opening sub- IIO stantially parallel With the plane of the top opening, a flask formed in two parts and inclosing said pattern and having an opening in one of its Walls corresponding with the front opening in said pattern, and a plate in the top opening of the pattern and adapted to serve as a parting between mold sand rammed in the flask outside the pattern and core-sand rammed ithin the pattern.

5. The combination substantially as set forth, of a box-pattern having an opening in its top Wall and an opening in its front Wall and parted through said latter opening in a plane substantially parallel With the plane of the top opening, a flask surrounding the pattern, and a plate in the top openingof the pattern and provided with an anchor projecting from its inner surface and adapted to serve as a parting between mold-sand and core-sand.

6. The combination, substantially as set forth, of a box-pattern having a top opening and a front opening and a parting through the front opening in a plane substantially parallel with the top opening, and a plate Within said top opening and provided with an anchor projecting from its outer surface and adapted to serve as a parting between moldsand and core-sand.

7. The combination, substantially as set forth, of a box-pattern having a top opening and a front opening and part-ed through the front opening in a plane substantially parallel with the top opening, and a plate in said top opening and provided with anchors projecting from its inner and outer surfaces and adapted to serve as a parting between moldsand and core-sand.

HARRY V. MOORE.

Witnesses:

J. W. SEE,

SAM D. FITTON, Jr.

Images