US1947390A - Linerless mold - Google Patents

Description

Feb. 13, 1934. GAGNE ET'AL 1,947,390

LINERLESS MOLD Filed Jan. 20. 1932 INVENTOR. ARTHUR L. 6.4 s/vE JOSEPH A. 51y YDER. BY

4mm 4 Co.

A T TORNEYS.

Patented Feb. 13, 1934 PATENT oFFics 7 1,947,390 LINERLESS MOLD Arthur L. Gagn, San Francisco, and Joseph A. Snyder, Mayfield, Calif., assignors .to Intertype Corporation, Brooklyn, N. Y.

Application January 20, 1932. Serial No. 587,772

Claims. (014199-55) This invention is an improvement over the form of linerless molds shown in our co-pending application, Serial No. 500,910, filed December .8, 1930. In the pending application, we showed 5 manually-controlled means for adjusting the upper half of the mold with respect to the lower half, and the upper half consisted of two parts, one of which was secured to the mold disk, while the other had a cam engagement with the first part, so as to be movable toward and away from the lower half.

In the present invention, we do away with the necessity of making the upper half in two pieces and securing one or" them to the mold disk. The entire upper half in the present form of the invention is movable toward and away from the lower half as a unit, and this is accomplished by the manual adjustment of a combination rack and cam bar which is operatively connected to depending supports that in turn are connected to the upper half.

A further object of our invention is to provide a device of the type described, in which novel locking means is used for preventing the accidental movement of the rack until the operator positively rotates a gear that meshes with the rack.

Other objects and advantages will appear in the following specification, and the novel features of the device will be particularly pointed out in the appended claims.

Our invention is illustrated in the accompanying drawing forming a part of this application, in which Figure 1 is a front elevation of the device;

Figure 2 is a rear elevation of the same device;

Figure 3 is an end view of Figure 1;

Figures 4 and 5 are sections along the lines 44 and 5-5 of Figure 1;

Figure 6 is a view of the rack; and

Figure '7 is a section along the line 77 of Figure 5.

In carrying out our invention, we provide a mold comprising a lower half A and anupper half B. The part A is designed to be secured to a mold disk, not shown, by means of screws that are inserted in openings 1. Figure 5 shows the lower half A as being provided with guide openings 2 for receiving legs 3 that depend from the part 13. Guide blocks 4, (see Figures 1 and 5), are integral with the tops of the legs 3 and are removably secured to the part B by screws 5 or other suitable fastening means. The blocks 4 ride in guide channels 6 in the part A, and in this way, the under-surface 7 of the part B is kept parallel with the upper-surface 8 of the part A at all'times.

' In order to provide for expansion between the part B and the guide blocks 4, we show the left-hand guide block in Figure 1 as being provided with slots 9, (see Figure 7) through which the screws 5 pass. The slots permit a slight expansion of the part B along its length without in any way afiecting the position of the left-hand block 4 in the guide 6. The hot metal coming in contact with theunder-suriace '7 will cause this to expand more rapidly than the part A, and it is for this reason that a relative movement must be permitted between the part B and one of the surfaces 7 and 8 and thus determine the point size of the slug to be cast.

' The part A has a groove 11 therein, (see Figure 2), in which a combination rack bar 12 and cam is slidably mounted, (see Figures 2, 5 and 6). The bar 12 has two inclined cam grooves 13 for '80 slidably receiving projections 14 carried by the legs 3. The walls of the grooves 13 will move the legs 3 vertically when the rack bar 12 is moved inthe direction of its length. The inclination of the grooves 13 is such that a tendency to move the part B will not move the rack bar 12, and, therefore, the part B will remain in adjusted position.

The means for moving the rack bar 12 in the direction of its length comprises a gear 15, (see Figure 2), which meshes with rack teeth 16 and is rotatably mounted in a bushing 17 carried by the part A. The gear 15 has a conical-shaped portion 18 that slidably engages with a handle 19, (see Figure 2), of a pawl 20 which is pivoted at 21 to the part 13. Figure 4 shows how a spring 22 normally keeps the gear 15 in theposition shown. The gear is provided with a noncircular end 23, (see Figure 1), that is designed to re- ,ceive a key 24. The operator, when inserting 0 the key, moves it longitudinally so as to compress the spring 22 and cause the conical portion 18 to swing the pawl 20 out of engagement with stop teeth 25, (see Figure 6). The operator can now rotate the gear 15 by means of the handle 24 and this will move the rack 12 longitudinally in the desired direction.

The various point sizes of the slugs to be formed are set forth on a scale 26, (see Figure 1). This scale is secured to the part A by a screw 27, or

other suitable fastening means. A pointer 28 is carried by the rack bar 12 and rides over the scale 26. In this way, the operator can determine the height of the space 10.

The releasing of the key 24 from the gear 15 will permit the spring 22 to move the gear longitudinally back into the position shown in Figure 4, and this movement will allow a spring-pressed pin 29, (see Figure 2), to move the pawl 20 into engagement with one of the stop teeth 25.

The part A carries guides 30 that are received in grooves 31 in the ends of the part B, (see Figure 3). After the space 10 has been adjusted to the desired height by means of the gear 15, the mold can be used in the usual manner for receiving lead in the space 10, which is formed into a slug in the usual manner.

While we have shown only the preferred form of our invention, it should be understood that various changes or modifications may be made within the scope of the appended claims without departing from the spirit of the invention.

The upper half B has guide plates 32 which ride on surfaces 33 of the part A, and the lower edges of the plates are bevelled as at 34 so as to shear on any metal that might collect between the surface 35 of the disk and the bottom edge of the plates, (see Figure 3).

We claim:

1. A linerless mold comprising a lower half, an upper half movable with respect to the lower half, end blocks carried by one half and movable transversely of the other half of the mold for defining the ends of the casting cavity therein, and cam means carried by the lower half for positively raising or lowering the upper half for predetermining the point size of the slug to be cast.

2. A linerless mold comprising a lower half,

an upper half movable with respect to the lower half, end blocks secured to the upper half and. slidable transversely of the lower half of the inclined grooves therein, depending members extending from the upper half and being slidable in the grooves, a manually rotatable gear meshing with the rack, and rack-locking means freed 00 from the rack when the gear is moved.

4. A linerless mold comprising a lower half and an upper half movable with respect thereto, a rack slidable in the lower half and having inclined grooves therein, depending members extending from the upper half and being slidable in the grooves, a manually rotatable gear meshing with the rack, rack-locking means freed from the rack when the gear is moved, a point scale carried by the lower half, and a pointer carried by the rack and movable along the scale.

5. A linerless mold having substantially parallel opposed casting faces, one stationary and the other movable toward and away from said stationary face, end blocks secured to said mov- 195 able face and provided with legs projecting therefrom toward said stationary face, said stationary face having guide openings therein to receive said legs, said blocks presenting substantially parallel opposed faces cooperative with said cast- 1w ing faces to define a casting slot, and actuating ,means carried by said stationary face and oper-

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