US42143A - Vania - Google Patents

Description

UNITED STATES PATENT OFFICE.

FREDERICK MCKEE AND CHARLES BALLINGER, OF PITTSBURG, PENNSYL- VANIA, ASSIGNORS TO MOKEE AND BROTHERS, OF SAME PLACE.

GLASS-PRESSING MACHINE.

To all whom it may concern: Y

Be it known that we, FREDERICK MGKEE and CHARLES BALLINGER, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Steam Presses for Pressing Glass and other Vitretled Material; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawing, making a part of 'this speciticatiomin which- The gure represents a perspective view of the entire machine.

Our invention consists, first, in the application of the power of steam to the working of a piston and plunger for pressing glass in molds, as will be explained.

It consists, second, in separating the pis` l tonrod ofthe steam-cylinder from the pistonrod of the plunger in such a Way as that while both shall descend together the steam piston-rod may rise without the other.

It consists, third, in the combination of an overpoise weight or its equivalent with the divided pistons and the pressing mechanism, so that when the press is run down by the action of the steam the operator may hold it down,while the steam-piston may rise up without it, and the overpoise, when released, raise it up.

It consists, fourth, in combining with the divided joint of the two pistons spring-jaws or their equivalents, that hold and release the mechanism by which the steam-valves are operated, thus making the press partially automatic and partially dependent upon the will or action of the operator.

To enable others skilled in the art to make and use our invention, we will proceed to describe the same with reference to the draw- A represents a bed-plate, which, for tle sake ot' convenience of transportation, may be mounted on wheels B, as is usual with glasspresses. Upon this bed A is mounted the press and engine-frame C, sustaining at or near its top a vertical steam-cylinder, D, furnished with a valve or valves at E and steam ports and passages in the usual well-known Way. F is a piston-rod working in the steamcylinder D, its lower end coming in contact with the piston-rod G, that operates the plunger in the mold. The lower part of this press may be like those in common use for pressing glass, and, as it constitutes no part of our invention, will not be further referred to. Wherethe two piston-rods F Gmeet, there are arranged two spring-jaws, a a', that are pivoted at 6 and their rear ends, c c, are beveled on" to form a seat for a wedge-piece, d, that is attached to a vertical rod, e, that may rise and fall through suitable guides, f. The

lower end of the piston-rod F and the upper end ot' the rod G are beveled ott, as shown in the drawing, and the jaws a a are so beveled Y as to tit in between the sloped-oft' ends of the4 two rods. To the upper end ot' the rod e is fastened a cord or chain, g, which passes around an arm, h, and thence over a friction-pulley that may be. placed at i, though not shown, and at its end is fastened a weight,j. The arm his connected to the valve in the valve-box E, and the drawing down ofthe rod e operates the valve in one direction, while its ascent when released by the falling of the overpoise-weight j operates said arm and valve in an opposite direction. The cord or chain g may be fastened to the arm h, or two or three turns of it made around said arm, so that the friction will be sufficient to move the valvearm and consequently the valve.

H is a lever, pivoted to the main frame at k, and passing through the piston rod G, which lever, when released, will, by its Weight I, at one end, raise up the pressing mechanism after the piston-rod F has been raised up by the steam in the cylinder D.

J is a screw-sleeve for raising or lowering the rod G to adjust it to the molds.

Steam may be admitted to the valve chest E in the direction of the arrow l, and the exitport may be in the direction ofthe arrow 2; and when the machine is of a portable character the steam-pipes should be exible to admit of its being moved.

The operation is as follows: Suppose the steam piston to have been raised up and that the weight I to have raised up the pressing mechanism connected to the rod G. The mold and glass being now ready and properly placed the operator draws down the rod e, its

wedge-piece d entering between the pieces c c of the jaws a. a, which closes the jaws, the

steam, by the drawing down ot the rod d, is admitted above the piston in the steam cylinder, and its rod F moves down and comes against the jaws a., which in turn rest upon the top of the plunger rod G, and thus the plunger-rod and plunger are driven down into the mold. Now, the end-s ofthe two rods F G, as well as the sides of the jaws a a, being beveled oft' or angular, the continued pressure of the piston rod F will spread the jaws a, and in so doing bring those 0 against the wedgepiece d, forcing up said wedge'piece and the chain and weight then raise up the arm h and shut off or reverse the steam, so that the piston-rod F may rise. But before the steam is reversed the operator seizes hold of the lever H and holds the pressing apparatus for a few moments for the glass in the mold to chill or set after the piston-rod F has ascended or moved up. Then, by letting go the lever H, the Overpoise I carries up the pressing apparatus and everything is ready for a second similar operation. The requisite pressure upon the glass is defined by the opening of the jaws a, which in turn shut oii' or reverse the steam, as described.

Having thus fully described our invention7 what we claim as new, and desire to secure by Letters Patent, is-

1. Operating the piston ofa plunger in glasspressing by the application of steam applied in the line of the piston or plunger, substantially as described.

2. The separation between the plunger-rod and the piston-rod, so that the latter may, af-

ter forcing down the plunger, raise up, while the plunger remains momentarily down, for

.the purpose and substantially in the manner inder, substantially as described.

FREDERICK MCKEE. CHARLES BALLING-ER. Witnesses:

0. B. STEvENsoN, J osEPH H. SMITH, ALEXR. McLEAN.

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