US1629492A - Method and apparatus for making sash-weight molds - Google Patents

Description

y J. J.F1 EMTNG METHOD AND APPEARATUS FOR MAKING SASH WE IGHT HOLDS Filed Aug. 27,- 1925 3 Sheets-Sheet l 29, 9 J. J. FLEMING METHOD AND APPARATUS FOR MAKING SASH WEIGHT HOLDS Filed Aug. 27, 1925 3 Sheets-Sheet 2 May 24, 1927.

1525M 70120Jj I&\\\\\ 7 //AA V x 0/ l 7 V V 0 May 24, 1927. 1,629,492

J. J. FLEMING METHOD AND APPARATUS FOR MAKING SASH WEIGHT HOLDS Filed Aug. 27, 1925 s sheets-sheet s IIIIIIIIIIIIII/IIIIIIIIII,

////7A mm\\\lmmfimmmm l 10 0 9 c o w O O O O O O (P O (a O O I O O o o g 0 6 0 O yo?-v O 0 Z -o o o o o o 4 o o o (F -17m o I more and more.

Patented May 24, 1927.

JOHN 5r. mamas; or VINE'LANQANEW JERSEY. r

METHOD AND APPAR'K'rns FOR MAKING sesnewnirenm MoLns.

Application filezi Au gust 1:325 ,S eri a l fie. S ZJQ L lviy invention relates to a method and apparatus for making sash weight molds.

The usual method ofinalring a mold for sash weights is to rain sandaround horizontal sash weight patterns arranged in hori-' zontal rows one above the other. This done by first ramming the sand around the bottom row of'patterns, then placing anhthcr row abovev and rannnin g sand around'that 15 w and so on until-five or six rows have been rammed. As eachsucceeding upper rowpf patterns is rammed' with sand, the sand around the bot-tom row is compressed I This compression forces the sand from the underside of each pattern in the bottom row and leaves a space which makes the impression. larger than the pattern and molds a sash weight which is too heavy. This enlarging of the impressions due to compressing the seams greatest at the bottom row of patterns and..lea'st at the second row from the top. This causes weights to be produced of varying weights. KVeights, which are too heavy, arehighly objectionable because they overbalancethe window sash and tendto keep it open; v I

The objects of invention are to provide a methodwhereby sash weights of uniform weight may be produced in large quantities and at alow cost and apparatus for carrying the method into effect.

These objects, and .other advantageous endswhich will he describedhereinafter, I attain in the following manner, reference being had to the accompanying drawings in which Figure 1 is a sectional perspective View through a mold made in accordance with my invention;

Figure 2 a front elevation of a sash weight molded in the mold shown in Figure 1 Figure 3 a side elevation partly in section of the sashweight shown in Figure 2,

Figure 41- a. side elevation of sash weight patterns mounted on'a' support;

Figure 5 a central section through a flask having the pattern mounted therein,

Figure 6 a view similar to Figure 5 showing the flask rammed with sand,

Figure 7 a view similar to Figure 6 showing a gate plate pressed in the sand to form gates leading to the patterns,

Figure '8 a plan view of the gate plate shown in F lgure 7, and

Figure 9 a section on line 99 of Figure 8.

Referring to tli'e drawings, 1 indicates a flask preferably of cast metal having an opeat'op 2 and a bottom 3 provided with openings 4 to receive sash weightpattejrns The patterns are suitably mounted on a pattern support 6. The upper ends 7' of the patterns'are reduced to form apart of the gates in the sand for, the inetal when poured into the molds. The p'atterns'extend throughopenings '& into the flask andpattern support 6 abuts the bottom of. the flask as shown'in Figure 5. Th e heilght of the upper ends 7 is such that they are even 'wit-h the upperfedge of the flask. A "'ask extension Spof rectangular cross section, rests' on the edges of th'efiaskto hold a sufficient quantity of sand 9 for ramming purposes. A gate-forming plate 10 has ridges ll and perforations 12. passing through the ridges. 'Tl'iese perforations lit over the upper ends 7 of the patterns when the gate plate is pressed into the rammed sand to form gates for the metalto flow into theinoldsZ Theineth'od for making the sash weight molds is follows ,The. pattern support 6' and patterns e'are placed on sand bed as shown in Figure 4 and the flask is placed on support 6 with the l'patterns 5 vextending through openings a into the flafslt as shown in Figure 5.

In. J in.

tension 8'is' then placed on the upper edges of the flask and the flask and extension filled with sand 9. The sand is then rammed or forced between the patterns to a level even with the upper ends of the pat;

terns as shown in Figure 6, after which the extension is removed and gate plate 10 placedon the sand with its perforations 12 fitting the upper ends 7 of the patterns. The plate is pressed into the sand as shown in Figure 7 and then removed. The ridges 11 in the gate plate form gates l3,' as shown in Figure 1, leading to the upper ends 7 The molds are then ready for pouring. The

metal poured will flow into the gates 13 and down into the molds 14. After the weights are molded they will be as shown at 16 in Figures 2 and 3. The upper end 17, to which the sash cord is attached when connected to a window sash, is formed by the cores 15.

It will be seen'that sash weights, molded as above described, will be of accurate and uniform weight and that the weights may be produced in large quantities and at low cost.

lVhile I have described my invention as taking a particular form, it will be under stood that the various parts may be changed Without departing from the spirit thereof, and hence T do not limit myself to the precise construction set forth, but consider that I am at liberty to make such changes and alterations as fairly come within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. A method of making sash weight molds consisting in inserting patterns into and through one end of a flask, filling the flask with sand through its opposite end to a level above the patterns, ramming the sand even with the upper ends of the patterns, compressing the sand to form gates adjacent the upper free ends of the'pattern, and removing the pattern through the first mentioned end of the flask.

2. Apparatus for making sash weight molds including a flask having an open top and a bottom provided With a plurality of openings, and patterns extending through the openings into the flask, thereby permitting sand to be rammed between the patterns through the top of the flask.

3. Apparatus for making sash Weight molds including a flask having an open top and a bottom having a plurality of openings; a pattern support adapted to abut the bottom of the flaslnand patterns mounted on the support adapted to extend through the openings in the bottom into the flask, thereby permitting sand to be rammed between the patterns through the top of the flask.

a. Apparatus for making sash weight molds including a flask open at its upper end and having a bottom provided With a plurality of openings; a pattern support adapted to abut the bottom of the flask; pat terns mounted on the support and extending through the openings in the bottom into the flask, and an extension on the upper end of the flask, thereby permitting the sand filling the flask and the extension to be rammed between the patterns through the upper end of the flask,

5. Apparatus for making sash weight molds including a flask open at its upper end; a pattern support adapted to abut the bottom of the flask; patterns mounted on the support andextending through the bottom into the flask; an extension on the upper end of the flask for holding the sand to be rammed between the patterns, and a perforated gate plate fitting over the upper ends of the patterns and adapted to press the sand to form gates leading to the patterns.

6. Apparatus for making sash weight molds including a flask having openings in its bottom; a pattern support adapted to abut the bottom; patterns mounted on the support and adapted to extend through the openings into the flask; an extension on the flask above the upper ends of the patterns for holding sand to be rammed to a level even with the upper ends of the patterns, and a perforated gate plate adapted to fit over the upper ends of the patterns and press the sand to form gates leading to the patterns.

In testimony whereof I have signed my name to this specification. JOHN J, FLEMING.

Images