US171134A - Improvement in molding-machines - Google Patents

Description

v 2SheetsSheet 1.

L.-HO USTON.

MOLDING-MACHINE.

Patentefi Dec. 14,1875.

Him

2 Sheets-Sheet 2.

L. HOUSTON.

MOLDING-MACHINE. No.171,134. Pate nted ne.14,1875.'

- UNITED STATES LEVI HOUSTON, OF MONTGOMERY, PENNSYLVANIA.

IMPRQ VEMENT IN MOLDING-MACHINES.

Specification forming part of Letters Patent'No. 171,134, dated December 14, 1875; application filed November 24, 1874.

ing-Machines, of which the following is a specification The object of my invention is to so construct. a molding-machine that it will be more effective in its operation than those in common use and this object I attain in the manner which I will now proceed to describe, reference being had to the accompanying drawings, in which- Figure 1, Sheet 1, is a front view of the machine; Fig. 2, a plan view; Fig. 3, Sheet 2, a rear view; Fig. 4:, an end view; and Figs. 5 and 6, Sheet 1, perspective views of parts of the machine.

A A are the side frames of the machine, and are suitably connected together. The horizontal cutter a is secured to a shaft, 0 which turns in bearings formed in a headstock, B, so secured to the opposite side frames of the machine as to be adjustable thereon, and the outer end of this shaft is adapted to a bearing,a in the upper end of a curved' arm or standard, D, secured to the side frame A at the base, and extending outside of the work-table E, which is also secured to the said frame. A hearing in the side of this table carries the shaft of the lower feed-roller F,

which receives its motion, through the me-.

dium of bevel-wheels .c and c, from the vertical shaft H, driven by the main shaft I. The upper feedrollers b and 12 turn in suitable bearings in the frame A, and are of different diameters, for a purpose explained hereafter. These rollers b and I) receive their motion, through the medium of cog-wheels f and f from a cog-wheel, f, on a shaft, 0, which .is provided near its outer end with a pulley, d, for receiving a belt from a pulley, cl, on a shaft, 6, the latter receiving its motion from the driving-shaft. The shaft 6' turns in hearings on the frame-work of the machine, and is connected by a rigid bar, 9, to the shaft 0, the object of which is to prevent the belt from drawing the shafts out'of line. On referring to Fig. 1 it will be seen that the upper surface of the work-table E is slightly depressed at and near its outer end below the level of the rest of the table. This depression extends to about the center of the-lower feed-roller F, and its object is to prevent that excessive friction in front of the feed-rolls which is caused by the contact of the work with the surface of the in relation to the cutting-edges of the cutterhead J as to support the work close up to the edge of the cutter, and prevent the chipping or splintering of the same, without regard to the size of the cutter-head which is employed. With some classes of work it is necessary to employ an intermediate cutter for operating on the work in its passage from the horizontal Y cutter a to the inner cutter J, and one feature of my invention relates to a universal hearing for such a cutter-head, and is illustrated in Figs. 1, 2, 4, and 5 of the drawings.

The table E has an extension, at, and from this extension to the side frame A project two guides, 0 0, (see Figs. 4 and 5,) to which is adapted the sliding block 19, carrying a vertical sliding framen'. To hearings on this frame is adapted the shaft 8, which carries the intermediate cutter-head. Set screws are so combined with the sliding block p and frame 7' that the cutter can be secured in any position, either vertical or horizontal, to which it maybe adjusted, andprovision for diagonal adjustment is provided by means of a curved slot, 23, in the sliding block 19, to which is adapted-a set screw, 1;, secured to the sliding frame '1". It will be seen on reference to Figs. 1 and 2 that the bearings s of the shaft 8 are formed in one piece with the sliding frame 1', each been in g being provided with a sliding block, 2, adjustable by means of a set-screw. By this means the strain of the shaft 8 is resisted by a solid backing, the wear of the bean ing being compensated for by adjusting the sliding block 2.

Another feature of my invention is shown in the perspective view, Fig. 6 and consists in forming two sides, y, .of the cutter-head plain, the two remaining sides, 7 being slotted in the usual manner. The object of this con PATENT QFFIGE.

struction is to afford a firm backing for the cutting-plates so, when heavy work is being performed by the machine, the cutting-plates being, in such case, secured to the solid face of the cutter.

On referring to Fig. 1, it will be seen that the upper feed-rollers b b are-of different diameters, the two being so geared, however,

ter-shaft, but serving also to support the worktable E at a point immediately beneath the cutter, where the table is in most need of a substantial support.

The bearing a is adapted to a dovetailed groove formed in the upper portion of the frame D, so that it can be readily detached when a changeof cutter-heads becomes neces sary. I

I claim as my invention- 1. The combination, in a molding-machine,

of the vertically-adjus'table Work-table E and the standard D, secured to the frame below the table, and provided at the top with a hearing for the spindle of the outside cutter-head, as set forth.

2. The work-table E, of a uniform height at both sides of the cutter, and depressed at and near one end, as and for the purpose set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

LEVI HOUSTON. Witnesses:

WM. SEDAM,

WM. MAGKEI;

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