US1773732A

US1773732A - Molding

Info

Publication number: US1773732A
Application number: US22064A
Authority: US
Inventors: James F Hines
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-04-10
Filing date: 1925-04-10
Publication date: 1930-08-26
Anticipated expiration: 1947-08-26

Description

26, 1930. HlNEs 1,773,732

I MOLDING Filed p l 1925 3 Sheets-Sheet 2 Eigf) EJ'amw/i) zzzef J Aug. 26, 1930. J IF H|NE5 1,773,732

MOLDING Filed April 10, 1925 3 Sheets-Sheet 3 3 James R Hines Patented Aug. 26, 1930 JAMES F. mans, or ILAKEwoon, 01110 MOLDING Application filed April 10',

My invention relates to molding and the" principal object of my invention is to provide new and improved methods of molding and new and improved apparatus for carrying out these methods. In the drawings accompanying this specification and forming a part thereof I have shown, for purposes of il- 20 mold has been formed,

Figures 6 and 7 are fragmentary sections similar to Figures 4 and but illustrating an alternative method,

Figures 8 and 9 arefragmentary sections third method, while v Figure 10 illustrates one use of the molds produced in accordance withthe method of 3 Figures 8 and 9.

through 5 comprises a frame 50 consisting of two pairs of legs connected by means of two rails 21 each carrying over at least the central portion of its upper face an undulating track 22 on which ride the wheels23 of a car 24 arranged to be oscillated along the track 22 by means of a lever 25 pivotally mounted at 26 in the rails 21 and provided intermediate the rails 21 with an offset portion 27 to which is secured one end of a link 28 secured at its other end to a bracket 29 depending from the adjacent end of the car 24. Beneath the rails 21 is a cooperating car 30, provided with wheels 31 riding upon the lowto Figure 4 illustrating the parts after'the J similar'to Figures 4 and 5 but illustrating a The apparatus disclosed in Figures 1 1925. Serial lil'o. 22,064.

er faces of'the rails 21- and rotatably mounted on axles 51 carried in the frame of the car 30, and said car 30 is connected to the car 24 by a connection arranged to hold the car 24 to the track 22 while permitting the variation in the distance betweenthe cars necessitated by the undulations in the'track 22. This c0nnection is shown hereinas comprising a pair of rods-32 having their upper ends secured to the car 24 and their lower ends extending through apertures 52 in enlargements 53 formed on the axles '51, and said rods terminate in polygonal heads 34 between which and the enlargements 53 are compression springs 33 constantly pressing the rods 32 6O downwardly and therefore constantly holding thecar 24 in engagement with the track 22. i

The two side rails of the car 24 are provided with Tr-slots 36 arranged to receive the heads 37 of studs 35 secured to the lower face of a pattern plate 38 on the upper face of which appears the pattern 39 which is to be reproduced in the mold. Also projecting from the upper face of the pattern plate 38 are a pair of pins 40 arranged to cooperate withlugs 41 on the flask section 42 to register the flask section 42 with the pattern plate 38, while projecting upwardly from the flask section 42 are similar pins 43 arranged to mg f with the flasksection 42'both the extension 45 and the-weighted section 47.

In use, the apparatus, except for the weighted plate 47, is assembled as shown in Figures 3 and 4, the flask section 42 and extension 45 are filled with-sand to the top of the extension 45, the height of which has been properly calculated to give the amount of sand desired, the weighted-plate 47 is placed in positiom'and the handle 25 is operated to go move the car 24 back and forth along the track 22 to vertically oscillate, because of the undulations of the track 22, the car 24 and everything carried thereby, and, in this manner, to cause the weighted plate 47 to continue to pack the sand until the plate 47 has reached its limit of movement in that position shown in Figure 5 where its lower surface is flush with the bottom of the extension 45, the upper face of the mold section is flush with the top of the flask section 42, and the mold section is completely formed within the flask section42.

Thereafter the extension 45 and weighted plate 47 are removed from the flask section 42 and the flask section 42 is removed from the pattern plate 38 and assembled with a cooperating flask section containing a cooperating mold section which may have been formed in exactly the same manner.

On'the other hand, formation of both mold sections in this manner necessitates rolling over the drag section, something which is at times quite undesirable. Under such circumstances I may form the drag section by the method indicated in Figures 6 and 7 wherein the extension 45 and flask section 42 are assembled on a blank plate 48 in the same manner but the sand is compacted by a weighted plate 49 which differs from the weighted plate 47in that it substitutes for the plain lower face of the weighted plate 47 a face Whereon is mounted the drag half of the pattern. In operation, the car is again moved to produce the desired vertical oscillation of the parts to cause the weighted plate 49 to travel from the "position shown in Figure 6 to the limit of its movement as shown in Figure 7, whereupon there is produced a mold section lying entirely within the flask section 42 and with its upper face flush with the upper edge of the flask section 42 and containing the configuration corresponding to the drag section of the pattern.

On the other hand, I may utilize both of these methods of molding at the same time to produce in a single mold section both a dragsection and a cope section. In such case I may arrange the apparatus as shown in F igures 8 and 9 wherein the flask 42 and extension 45 are assembled on the pattern plate 38 used in forming the mold section in the methodillustrated in Figures 3 through 5 and the sand is compacted by the pattern carrying plate 49 used informing the mold section in the method shown in Figures 6 and 7, and the apparatus is then oscillated to compact the sand and move the parts from the position shown in Figure 8 to that shown in Figure 9, whereby there is produced a mold lying entirely within the flask section 42, and carrying on its lower face a cope mold section and on its upper face a drag mold section.

I may then utilize this combination mold I in the manner shown in Figure 10 wherein a plurality of these mold sections are arranged in a vertical stack with the cavities all connected to a common sprue so that the entire series may be poured in one operation.

It will be obvious to those skilled in the art that I have disclosed new and improved methods of molding and also new and improved apparatus particularly designed for carrying out these methods. It will also be apparent to those skilled in the art that these methods and apparatus possess a large number of advantages other than those particularly pointed out or suggested herein and also that these methods and apparatus may be variously combined with other methods and apparatus and also variously changed and modified all without departing from the spirit of, my invention or sacrificing the advantages thereof. It will therefore be understood that the disclosure herein is purely illustrative and that my invention is in no wise limited thereto.

I claim:

1. In combination, a flask section, a pattern cooperatingtherewith, and means for laterally oscillating and vertically reciprocating said flask section and said pattern to compact the sand within said flask section into a mold reproducing said pattern.

2. In combination, a flask section open at the top, a pattern arranged above said flask section facing downwardly, and means for laterally oscillating and vertically reciprocating said flask section and said pattern to compact the sand within said flask section into an upwardly facing mold reproducing said pattern.

3. In combination, a flask section open at the bottom and the top, a lower pattern arranged below said flask section facing upwardly, an upper pattern arranged above said flask section facing downwardly, and means for laterally oscillating and vertically reciprocating said flask section and said pattern to compact the sand within said flask section into a mold comprising a downwardly facing section reproducing said lower pattern and an upwardly facing section reproducing said upper pattern. I

4. In combination, pattern means, flask means cooperating therewith, a car supportingboth said means, an undulating track supporting said car, and means for moving said car along said track to oscillate said car to compact the sand within said flask means into a mold reproducing said pattern means.

5. The method of forming sand into a mold which comprises assembling the sand within a flask section in operative relation to a pattern, and then oscillating the same.

6. The method of forming a drag section of a mold which comprises imprinting a pattern into the sand from above by bringing said pattern into contact with the upper surface of the sand and then laterally oscillating and vertically reciprocating the mold container and said pattern. 7

7. The method of forming a drag section and a cope section simultaneously into a sin gle mold section which comprises simultaneously imprinting the cope pattern into the sand from below and the dragpattern into the sand from above by laterally oscillating and vertically reciprocating the mold container 10 and said patterns.

In testimony whereof I hereunto aflix my signature.

JAMES F. HINES.