US573455A

US573455A - Sectional brick-mold

Info

Publication number: US573455A
Authority: US
Publication date: 1896-12-22
Anticipated expiration: 1913-12-22

Description

(No Model.)

J. M. ERV'IN. SEGTIONAL BRICK MOLD.

Patented Dec. 22, 1896.

7 in such manner that the boundary-plates of d UNITED STATES PATENT OFFICE.

JAMES M. ERVIN, OF CLEVELAND, OHIO.

SECTIONAL BRICK-MOLD.

SPECIFICATION forming part of Letters Patent No. 573,455, dated December 22, 1896.

A li ation fil d March 18, 1895. Renewed April 23,1896. Serial No. 588,832. (No model.)

Improvements in Sectional Brick-Molds; and t I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in sectional molds especially suitable for use in brick-presses.

One object of my invention is to provide means for holding in the moldframe the plates which bound the several compartments any compartment may be removed Without disturbing the boundary-plates of any other compartment.

' Another object of the invention is to pro vide such a construction of the plates which define the separate compartments that after they are removed and the wearing-surfaces are dressed down from time to time said plates may be easily and quickly restored to their original thicknesses, whereby when they are replaced in the mold-frame the compartment which they define will be of the exact size desired.

The invention consists in the construction and combination of parts hereinafter described, and pointed out definitely in the claims.

In the drawings, Figure 1 is a perspective View of a mold having four compartments, two for plain and two for ornamental bricks. Fig. 2 is a horizontal vertical section on line 2 2 of Fig. 1. Fig. 3 is a vertical section on line 3 3 of Fig. 1. Fig. dis a perspective view of a key used for holding the walls together; and Fig. 5 is an enlarged perspective view of the rear side of one of the compound plates forming a side wall of one of the compartments, aportion of the soft-metal part of said plate being broken away for the purpose, showing the construction of certain parts be tween the hard and soft metal.

The mold-frame A is rectangular and may be made of any size, dependin g uponthe number of mold-compartments desired. The mold shownin the drawings contains four compartments, which may be shaped to form ornamental bricks, as are the two end compartments, or to form ordinaryrect'angular bricks, as are the two intermediate compartments. The frame consists of two parallel side members a a and two parallel end members a a, which may be made integral with one another, as shown, or in separate pieces suitably secured together.

The separate compartments are bounded by plates 13 and O, secured within the frame in the manner presently to be described. The working faces of said plates are preferably made of chilled iron, but they may be made of hard steel or any other hard metal sufficiently durable for the purpose.

The end plates B lie against the side members of the frame, against which they are held by means of the screws b,which pass through holes in the side members and screw into the back side of the said end plates. The length of said end plates must be exactly equal to the width of the compartment which they in part bound, and their thickness must be such that when they are held against the side members of the frame the distance between their working faces will be exactly equal to the length of the brick to be formed.

The-side plates 0 O are equal in length to the distance between the side-frame members a a, between which they fit snugly, and the ends of their working faces abut against the ends of the end plates B B. When assembled in the described manner and suitably held in place, it is clear that the distance between the working faoes of the plates 0 G will be exactly equal to the length of the end plates, and that this will be true however .much the working faces of said side plates may be dressed away.

In order to hold the end plates'and side plates of any compartment from movement in the frame, I provide two movable keys D D, which are set into grooves a in opposite faces of the side-frame members. The grooves c in whichsaid keys lie are deep enough to permit the keys to slide back, so as to lie wholly in said grooves. On the outer, side of each key is a stem d, which projects through a hole a in the side member a, and the outer end of said hole is enlarged, so as to permit the entry of a tool by which said stem maybe grasped and drawn outward, thereby withdrawing the key into the groove (0 The outer end of the stem is preferably threaded, whereby a threaded tool may engage with it. In the rear side of each end plate B and in the adjacent ends of the side plates 0 O are formed the grooves b and 0, into which one of the tongues enters when it is moved inward. lVhen said tongues are engaging in said grooves, the movement of the plates 13 and O in the frame is prevented.

E represents a bar adapted to be secured to the outside of the side members a by means of the screws Z), which pass through holes near its end. \Vhen so secured, this bar lies across the adjacent hole a and against the end of the stem d, whereby the tongue D is held partly in the grooves 12 and c. This movable tongue holds the plates securely in the frame, but permits the removal of the plates of any one compartment without disturbing any of the others and without separating the frame.

F F represent bolts which pass through both side members between the side plates of adjacent compartments lying in the grooves c o therein. These bolts serve as tierods to prevent the spreading of the side members of the mold frame.

If desired, one end plate may be made integral with a side plate, as shown in the left end compartment shown in Fig. 1, and when said plates are formed to make ornamental bricks it is sometimes preferable to so make them; but the movable tongues may be employed to secure them in place when they are so made.

In order that any compartment may be of the same size at all times, even after the working faces have been dressed down, it is desirable to so construct the plates that they can easily and accurately be restored to their original thickness, and to this end I construct said plates in the following manner: Take one of the plates 0, for example. It is made of two parts, namely, a front plate 0 which is made of chilled iron or other hard metal, and a back plate 0 made of softer metal, which is easily worked, as, for example, ordinary east-iron. made in one piece or in two or three sections, as desired, which latter construction is shown in Fig. 5. These plates 0 and 0 may be secured together by screws G, passing through countersunk holes in the back plate and screwing into the front plate. Inasmuch as the front plate must be made of very hard metal the cutting of the threads therein would be a difficult and expensive operation, and to avoid the necessity of such operation I form the front plates 0 011 their rear sides with holes 0, adapted to receive the nuts g,which nuts are held in place by lead or other metal, which is poured in a molten state into said holes around the nuts and allowed to harden. If the holes 0 are circular, the side grooves 0 may be formed, into which the molten metal This back plate may be will run, and thereby prevent the revolution of said nuts.

After the working face of any plate has been dressed down (or before, if desired) the back plate 0 is removed and a shim, com posed of paper, metal, or any other suitable material slightly thicker than the part of the plate 0 which is removed in the dressing operation, is placed between the front and back plates, whereupon said plates are again secured together. The compound plate is then put in a suitable machine and the rear side of the back plate is dressed off until the compound plate is of the original thickness. The chief advantage of this construction and method of restoring the plates to their proper thickness is that it is accurate. The work can be done quickly and to a gage.

There is this distinct advantage in having the side plates of the same thickness at all times'viz., it is not necessary to fill in the space between the contiguous plates with lead or any of the other substances commonly used.

\Vhile the movable keys described would be useful in molds having plates constructed differently than those shown and described, nevertheless the described plates do facilitate the end particularly sought to be attained by the employment of said keys, to wit, the quick and easy removal for any purpose of the boundary-plates of any compartment without disturbing any of the other plates.

Having described my invention, I claim- 1. In a mold for bricks and other articles, in combination, a mold-frame having horizontal grooves in two opposite members, a plate lying against each grooved frame member and having a corresponding groove in its rear side, two plates extending between said frame members, abutting the ends of the plates first named and having corresponding grooves in their ends, and movable keys adapted to enter said grooves, substantially as and for the purpose specified.

2. In a mold for bricks and other articles, in combination, a mold-frame. having horizontal grooves in two opposite members, a correspondingly-grooved plate lying against each of said grooved frame members, and laterally-movable keys adapted to lie either wholly in the grooves in the frame members, or partly in said grooves and partly in the grooves in the plates which lie against said members, and means for holding said keys in the position last named, substantially as and for the purpose specified.

3. I11 a mold for bricks and other articles, in combination, a mold-frame having horizontal grooves in two opposite members, a correspondingly-grooved plate lying against each grooved frame member, two plates extending between the two grooved frame members abutting the ends of the first-named plates and having corresponding grooves in their ends, laterally-movable keys adapted to ICC lie wholly in the grooves in the frame members, or partly in said grooves and partly in the corresponding grooves in the plates, and mechanism for holding said keys in the lastnamed position, substantially as and for the purpose specified.

4. In a mold for bricks and other articles, in combination, a mold-frame having horizontal grooves in two opposite members, a correspondingly-grooved plate lying against each grooved frame member, two plates extending between the grooved frame members, abutting the ends of the first-named plates and having corresponding grooves in their ends, laterally-movable keys adapted to lie wholly in the grooves in the frame members, or partly in said grooves and partly in the corresponding grooves in the plates, a stem to each key which extends through a hole in the frame member, and two bars removably secured to the outer sides of said frame members over the ends of said stems, substantially as and for the purpose specified.

5. In a mold for bricks and other articles, in combination, a mold-frame having a space adapt-ed to receive the plates hereinafter mentioned, independent side and end compartment-plates adapted to be removably secured within said space, each plate being composedof a hard-metal front plate, a softermetal back plate, and mechanism for separably connecting them, substantially as and for the purpose specified.

6. In a mold for bricks and other articles, in combination, a mold-frame having a rectan gular compartment Within which the 00111- partment-plates may be secured, two inde-- pendent compartment-plates C 0 equal in length to one dimension of the said compartment and adapted to lie against opposite walls thereof, two independent compartmentplates B Bequal in length to the desired distance between the working faces of said plates 0 0, means for securing said plates within the mold-frame with the plates 0 C lying against the ends of the plates B B, each of the independent plates B and 0 being com-