US40269A - Improvement in molding-machines - Google Patents

Description

H. A. LEE. MOLDING MACHINE..

No. 40,269. Y Patented Oct. 13, 1863..

w: cams vzrzns co.. Pnooumc., WASHINGTON, u. c.

UNITED STATES PATENT OFFICE.

HENRY A. LEE, OF WORCESTER, MASSACHUSETTS.

IMPROVEMENT IN MOLDING-MACHINES.

Specification forming part ot' Letters Patent No. 40,269, dated October 13, 1863.

To all whon'z, it may concern:

Be it known that I, HENRY A. LEE, of Worcester, in the county of l/Vorcester and State of Massachusetts, have invented certain new and useful Improvements in Molding- Machines; and I do hereby declare that the vfollowing is a full, clear, and exact description of the construction and operation ot' the same, reference being had to the accompanying drawings, in which- Figure 1 represents a side View of said machine. Fig. Zrepresents a longitudinal vertical section through the same. Fig. 3 represents a top view of the same. Fig. 4 represents a vertical cross-section through the feed apparatus.

To enableV others skilled in the art .to make' and use my invention, I will proceed to describe its construction and operation.

A represents the frame of the machine.

B represents the bed-plate on which the lumber is placed,v v

' C represents the rests by which the lumber is held in its proper position while acted upon by the cutters.

D and E represent the feed-rollers, which feed the-stuff to the cutters. The feed-roller D is grooved spirally for the purpose of pressing the lumber against the rests C during the operation of feeding. Itis secured to the horizontal shaft F, vwhich is supported by the journal-boxes a b within the standards Gr H, and it is operated by means of the gear-wheel l and screw-shaft K, the latter receiving its motion by means of the cone-pulleys L and M from the main driving-shaft. The feed-roller D and its shaft F can be adjusted longitudinally by means of the collar c, which is secured` to the shaft by setscrew 2, and rests against the journal-box b. It can also beadjusted vertically to the thickness ofthe lumber by means of the adjustingscre-Ws dand e, which pass through the standards G and H and through the journalvboxes a Z. The end -of the adjusting-screw d is secured to a lritirrup, j', and the latter is connected Witt a spring, g, which is secured to the frame A. By this arrangement the feed-roller D is' made yielding and to operate e'ectually on the' lumber should it not be ot' the same thickness throughout. The position of the lower roller, E, can be adjusted v rtca-lly by means of the set-screws h 1'., which are made to operate upon its journal-boxes 7c l, which vare set into proper recesses of the frame A. The feed-roller E is operated by means ot' the gear-wheels N O, gear-wheel P, and screw- 'shatt Q. The rests O are secured to guideblocks 3, which can slide in the grooves 4' of the bedplate, and their position can be adjusted laterally by operating the screw-shafts 5, which have their bearings in both sides of the frame A.

It represents the rotating vert-ical cutterheads for cutting the molding ou the sides of the material. They are supported by means of the journal-boxes m and o, the two being connected by a vertical hanger, n, which passes down from m to o. The two boxes or blocks are supported by means of the horizontal guide-rods p and 7, and can be adjusted thereon laterally by means of the adjusting-screws 6. rlhe cutter-heads can also be adjusted vertically by means of screw 8 of journal-box o, and are secured in'a'ny desired position by means 'if the set-screw 9.

o' represents bed-plates which are secured to the top of the journal-boxes m to support the stuit' while acted upon by the cutter-heads. They have circular recesses 10 to prevent the cutters from coming in contact with them, and being secured to the journal-boxes. They move with them when the latter are adjusted. By employing these small bed-plates 1*, I am ena-bled to dispense with the full bed-plate of the machine around the cutter-heads, thereby leaving large spaces through which the shavings may drop, thus fccfing the `cutter-heads clear and in view ofthe operatorandenabling the latter to adjust their positions by means of the screw-shafts 6 without arresting the vmotion of the machine. The cutter-"heads R A stron s rinff a. of india-rubber or otherma.terial,'is set into thcboxes ll, sons to press cured to the horizontal part of the cutter'-l -'rame S by means of the screws l5, which pass through slots 16, and thereby permit said frames to be adjusted in relation to the horizontal cutters.

T represents the horizontal cutter-head. The bearings of its cen ter shat't are supported by the boxes c ot' the cutter-frame S. This cutter''rame is secured to the Vertical part of the main frame A by means ot' the bolts b which pass through slots in the frame A, and

.it can be raised and lowered by means of the screw shaft B, which passes through the main frame A and through the lug 17 ot' the frame S. The cutter-head T has four sides, to which the cutters are attached, instead of using two cutters only attached to the opposite side of the head. Thus I may use cutters m n', which are set alternately on the head, and which are shaped for different molds, and by this arrangement I am enabled to equalize the work and prevent the cutter from chopping out the wood, as is the case when two only are used. I secure the cutter-blades t0 the head by means of screw-bolts, the heads of which pass into T-shaped recesses 18 of the cutter-head, and they are fastened to it by means of the short 'plates 19 and screwnuts A20. When the lmolding has a straight edge,

the latter ca'n be cut by these sa'me cutters, and I therefore' make a circular cavity, g', in the bedplate B and right under the cutterhead to enable the cutters to operate upon the edges of the material without striking the bed-plate. af represents another presser-bar. Its ends are supported by means of the brackets y, which are secured to the cutter-frame S, and it can be raised or lowered by operating the screws z. The hanger U is secured to the bar w, and can be adjusted thereon laterally. It has two jaws, 2l and 22. The former is stationary, the latter' is hinged 'to the former, and they can be compressed bymeans of the screw 23. A piece ot wood is secured be` tween the jaws of this hanger, which is to press upon the molded material as it passes from the cutting-cylinder, as represented in red lines in Fig. 5; or a piece of wood may be secured for the same purpose to the bottom plate of the hanger by means of screws, which piss through the holes 24.

V represents another horizontal cuttiu g or planing' vcylinder for the purpose of planing or molding the lower side of the material. It is provided with cutters in a similar manner as the cutter-head T. The material is pressed down upon the bed-plate B by means of the hanger X on cross-bar 25, the ends of which are suspended to the screw-shaft 426 in. the

frames Y, and thus the hanger X can be raised or lowered. A block of wood is secured to the lower face of the hanger X and presses and M and screw-shaft, Q. The lumber being placed upon bed B, the fced-rollerD is screwed down upon the lumber by turning the Screwshafts e and d. The spiral cogs on the feed-roll er D press the lumber against the rest-s C without using springs or other devices for that purpose. By means of the crank D on screw-shaft Q K the lumber can be drawn back or forward, to he examined by the operator if the work is properly performed. As the feed-rolls move the work toward the cutters the feed-roll D rises and ldescends with the different thicknesses of the material. The Work is acted upon by the cutters of the cutterheads B, passed under the yielding press-bar lw, under the horizontal cutter cylinder T, which cuts the molding on the upper face, while by the arrangement above described the lumber is held down by the hanger U, and, as the presser w, cylinder T, and hanger U are all secured `to the adjustable frame S, they can all be adjusted siinultanteously by turning the screw-shaft B. The lumber now passes under the presser X and over the cutter-cylinder V, 4wherev the lower side is operated upon.

By the construction of the boxes t, which support the press-bar s, I am enabled to adjust the degree ot' pressure upon the lumber by adjusting the screws 12; but under any degree of pressure the bar s and shoe w will be -able to yield by reason of the spring or elastic bolster a', which is interposed between the action of the screw 12 and the press-bar s, as represented by a vertical section at Fig. 6.

Having thus fully described the nature of my invention, what I claim herein as new, and desire to secure by Letters Patent, is-

1. Securingtheadjustablejournal-boxaofthe feed-roller shaft F to the stirrupf and spring g, for the purpose of making said feed-roller yielding to the unequal thickness of the lumber, substantially in the manner herein described. l

2. In combination with the adjustable rests C, the spirally-grooved feed-roller D,.for the purpose of pressing the lumber' against said rests while it is fed forward, substantially as herein set forth.

3. In rcombination lwith the vertical cuttcr heads It, `the boxes m o, hanger n, shafts p, 6, and 7, adjusting and set-screws 8 9, for the purpose of adjusting said cutter-heads horizontally and vertically' without arresting the motion of the machine, substantially as herein set forth. f

4. In combination with the yielding crossbar s, press-shoew, and its rollers 14, sub.

stantially in the manner and for the purposes set forth.

5. Securing the press-bars s and .fr in front and to the real-of the horizontal cutting-cylinder T, to the adjustable frame S of said cutting-cylinder, soas to enable the operator to adjust them simultaneously, substantially as herein described.

6. The concave g' in the bed-plate B, and under the cutter-cylinder T, to prevent the cutters from striking the bed-plate While operating on the edges of the lumber.

7. The adjustable hanger U, secured to the press-bar or, and when constructed and operated substantially 'in the manner and for the purposes set'forth.

8. The arrangement of the pulleys z and z with the belts for driving the shaft 9 of. the

cutter-heads RR, by means of which I am en- HENRY A. LEE.V

Witnesses:

ALLIN MAYER, H. C. Rien.

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