US840869A - Method of assembling patterns on pattern-plates. - Google Patents

Description

PATENTED JAN. 8, 1907.

R. BUDDY. METI IOD 0F ASSEMBLING PATTERNS 0N PATTERN PLATES.

' APPLICATION FILED MAR.1, 1906,

2 SHEETS-SHEET 1.

PATENTED JAN. 8, 1907.

R. BUDDY. METHOD OF ASSEMBLING PATTERNS ON PATTERN PLATES.

APPLICATION FILED MAR. l, 1906.

2 SHEETS-SHEET 2.

wwaoow UNITED STATES PATENT OFFICE.

ROBERT BUDDY, OF MOUNT VERNON, NEW YORK.

Specification of Letters Patent.

Patented Jan. 8, 1907.

Application filed March 1, 1906. Serial No. 303,717.

To all whom it may concern:

Be it known that I, ROBERT BUDDY, a citizen of the United States, and a resident of Mount Vernon, county ofWestchester, State of New York, have invented certain new and useful Improvements in Methods of Assembling Patterns upon a Pattern-Plate, of which the following is a specification.

This invention relates to the improvement of the method of preparing patternlates for use in molding, the apparatus of fhrm proposed for carrying out the invention being made the subject of a separate application, filed May 22, 1906, Serial.No.- 318,273. The

present customarily-used methods of preparing such plates are slow and inaccurate, resulting in great expense in preparation of the plate and imperfections in the resulting castmgs.

The object of my invention is to enable the rapid preparation of a pattern-plate having the patterns arranged and fixed thereon with great accuracy, so that the separate parts of the mold formed thereby will be exactly coincident and the resulting castings therefrom free from imperfections, such as shutovers, the term applied when two halves of a casting do not coincide at their edges.

My invention will be described more particularly in its application to a system in which each half-mold contains on its two sides counterparts of the same patternprint-that is to say, in which the patterns on one side of, say, the drag are counterparts of those on the other side of that half of the mold or flask; but the invention is not limited to such use. Also, as herein described and shown, the same pattern-plate is adapted to the printing of both the drag and the cope of the mold; but this is not essential, as the invention herein set forth is in its broadest application adapted for use in the fastening to the pattern or master plate of individual patterns of any nature and description. The

invention will, however, be best understood as herein described, in which the half-molds of the drag and cope are made by the same pattern-plate, the corresponding parts of the mold being brought into proper relation when the cope of the flask is inverted onto the drag.

My invention involves the use, in connection with the pattern or master plate, vof the means of some suitable pattern frame or frames, wherein the patterns are assembled and when assembled rigidly held in proper relation one to the other while being fastened upon the patternlate proper, and preferably I employ some p astic substance, such as plaster-of-paris, for holding the patterns in position until they are connected to the pattern-plate.

In the accompanying drawings, Figure 1 illustrates in plan view my pattern-assembling frame with patterns placed therein. Fig. 2 is a sectional view of the same on a supporting plate or table and illustrating the method of ing the patterns in position by lastic hardening material, such as plaster-0 paris. Fig. 3 is a sectional View of the same parts, the plane of section being at right angles to that shown in Fig. 2. Fig. 4 is a view similar to Fig. 3 and showing both assembling-frames. Fig. 5 is a sectional view similar to Fig. 2, showing the method of applying the pattern to the pattern or master plate. Fig. 6 is a plan view of the pattern or master plate with patterns in position thereon.

The problem solved by-this invention is the proper arranging upon the pattern or master plate 1, (shown in Figs. 5 and 6,) which is adapted to be used in the making of molds, of a series of patterns 2, in proper relation to each other, or if two pattern-plates are used for making the upper and lower halves of the mold then in proper relation on each plate tothose patterns on the other plate which are used for making the other part of the mold, so that when the two parts of the mold made thereby are brought together the prints will be in exact coincidence and no shut-overs occur. As shown in Fig. 6, the pattern-plate has upon its two halves half-patterns, those on one half being counterparts of those on the other half, and it is intended that the same pattern-plate be used for making the prints in both halves of the mold, and it is therefore necessary that the pattern on one half of the pattern-plate shall be exactly 0- sitioned with regard to those on the ot er half, so that, for example, if the lower half of Fig. 6 were turned up and over onto the uper half the outlines of the patterns will be rought into exact coincidence. The patterns shown have core-prints 3; but this is merely by way of illustration. Also the fig-- ure illustrates but three whole patterns or:

six halfpatterns whereas it is often customary, and is especially easy with this invention, to place many times this number of patterns on a single pattern-plate.

It will be convenient to describe the method of operating the process as the apparatus used therein is described. In Figs. 1, 2, and 3 is shown an assembling-frame 4, preferably a rectangular frame of wood or metal having holes 5 at both ends (here shown exactly midway of the frame) to receive steady-pins 6 for accurately locating the two assembling-frames with relation to each other when the counterpart patterns are being assembled with relation to those already assembled and also for accurately placing the assembling-frame with relation to the pattern or master plate when the patterns are to be transferred thereto. l/Vhen a series of small atterns, such as shown, are used, only onealf of the frame 4 is used at a time, and a dam 7 is placed in and removable from slots 8, midway of the frame and on the inner edges thereof. When larger patterns are used, the dam 7 is removed and the whole frame used. In employing the frame it is placed upon a plate or table 9, Figs. 2 and 3, which may have a surrounding frame 10, provided with holes 11, coincident with the holes 5 in the assembling-frame, or this plate or table may have lugs extending to receive said holes, or the entire table may be ofsize suflicient to receive them. The said pins 6 being inserted in the holes 5 ,11 hold the frame rigidly upon the table. This part of the o eration, however, does not ab solutely requlre that the frame 4 be held rigidly in place, and the table may dispense with the surrounding frame 10 and the fasteningmeans. The dam 7 then being in position (see Figs. 1 and 2) the half-patterns 2 are laid upon the table 9 face down in one half of the frame, being disposed with relation to each other, so as to utilize the space as much as possible and with due reference to the provision of gates, &c. These patterns all have dowel-holes 12, as usual, corresponding to the dowel-holes of the other half-pattern. Cement of suitable material, such as plaster-of-paris, is now flowed into the half of the frame 4 into which the said patterns are placed, as shown at 13 in Figs. 2 and 3, and when it sets the patterns are held in fixed relation to each other in the frame. The frame4 is then inverted up on the table, as shown in Fig. 4, the upper surface thoroughly oiled or otherwise protected from adhesion of cement thereto, and a similar frame 4 fastened to it by the steady-pins 6. The several counterparts of the half-patterns 2 are now fixed to their respective patterns by dowelpins 14, which preferably have a slight drift corresponding to that of the dowel-holes in the patterns. The counterpart patterns being thus assembled, the second frame 4 is filled with plaster-of-paris or like. cement, as shown at 15 in Fig. 4, which when it sets holds the counterpart half-patterns in the frame 4. The dowel-pins 14 may now be removed and the two frames 4' 4 separated without disturbing the relation which both of their sets of half-patterns bear to the jigholes 5 in the frames. The two frames may therefore be successively inverted, so as to bring their two sets of atterns on the two halves of the master-p ate 1, as shown in Figs. 5 and 6. as shown in Fig. 5, inverted upon the masterplate 1 and fastened thereto by the steadypins 6, extending through jig-holes 5 in the edge of the frame 4 and into jig-holes 5" 1n the edge of the master-plate or in the frame 1O surrounding the same. The masterplate is then bored in line with the dowel-' holes 12. Rivets or pins 14 are placed therein and finished flush with the printing-surface For example, the frame 4 is, 7

of the pattern and extending slightly below the pattern-plate, so that they may be.

knocked loose when required, and (more es pecially with large patterns, but preferably with all) screw-holes are tapped through the master-plate and into each pattern and 1 screws 15 inserted to hold the pattern rigidly.

to the pattern-plate. The cement is then knocked loose and the frame 4 removed, leaving the patterns fixed tothe atternplate. terpart patterns, is then inverted upon the pattern-plate and fastened by the steadypins 6 thereto and the same proceeding gone through with for the other half of the pattern-plate as has already been described with reference to the first half, this second frame being then removed, leaving its patterns attached to the pattern-plate, and the latter is ready for use, and it will be seen that by reason of the' exact relation of the two halves of each pattern the half-molds printed thereby may be brought into perfect coincidence.

Having thus described my invention, what I claim as new, and desire to secure by Let- 'ters Patent, is

1. The 'method of assembling patterns The second frame 4, with t e counj roo upon. a pattern-plate consisting in arranging a second frame and then applying the two patterns, fixing such counterpart patterns in sets of halves to the pattern-plate succesa second frame and then ap lying the two IO sivelyT h d 1 7 sets of halves to the pattern-p ate.

3. he met 0 of assemb ing patterns upon a pattern-plate consisting in arranging ROBERT BUDDY half-patterns in a suitable frame, fixing them Witnesses: therein by means of suitable cement, arrang- HARRY E. KNIGHT,

ing counterpart half-patterns upon the first WILLIAM P. HAMMOND.

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