US187471A

US187471A - Improvement in molding-machines

Info

Publication number: US187471A
Authority: US
Publication date: 1877-02-20
Anticipated expiration: 1894-02-20

Description

J. S. LOOMIS.

MOLDING-MACHINE.

Patented Feb. 20, 1877.

NFETERS PHOTO L THOGRAPHE UNITED STATES JOHN S. LOOMIS, OF BROOKLYN, NEW YORK.

IMPROVEMENT IN MOLDING-MACHINES.

Specification forming part of Letters Patent No. 1 87,47 1, dated February 20,1877; application filed January 4, 1876.

provement in Molding'Machines; and I de clare the following to be a full, clear, and exact description thereof, reference being had to the accompanying drawings, which form a part of the specification.

To enable those skilled in the art to constreet and operate the same, I will describe it as follows:

Figure l is a side elevation of a moldingmachine, having my improvements attached, which consist of the slotted bars or arms B, adjustahle-tongued blocks a a, with project ing sides 8 s embracing the upper edges of the said slotted arms, and adjustable by means of set screws and nuts '0 on a line parallel with the supporting-standards Z of the cutterhead. E is a vertically-adj ustable rear pivoted bar for operating the adjustable oscillating head I, which is secured to a wooden rubberblock, V, provided with sand-paper upon the bottom surface thereof for polishing purposes, or said block may serve as an adjustable pressure-foot upon the molding-strip R, said block being laterally adjustable by the screw rod or shaft W. By placing the single-weighted lever L at the side of the machine the opera-tor is enabled to raise the front presserfoot by simply lifting the weight G, with less labor and time than is usually employed when two weights are used underneath the top of the machine. Fig. 2 is a perspective side view of the vertically adjustable slotted bar D,

provided with open rectangular arms 0 O forming part of said slotted bar at each end thereof, to receive the adjustable tongued bearing blocks or ways a a, so that the slotted bar D and the front presser-foot may be raised or lowered and drawn back from the cutter in a right or straight line. Fig. 3 is a front view of the vertically-adjustable rear bar E pivoted in a sleeve-bearing, H, upon the screw-bolt N, and secured by a screw-bolt, N, at the opposite end thereof in the slotted standards F F.

m is a sliding loop adjustable upon said bar E by means of a screw shaft or rod, W, which operates in the adjustable bearings y and m. Loop m is secured to the oscillating presserhead P by means of a screw-pin, r. This oscillating head is provided with two extending jaws to grasp the wooden block V, which is secured and held in its place by means of a set'screw, a, passing through one of its jaws. This block V may be used for polishing or pressing the strip or molding It. The pressure is regulated by simply turning the screw rod or shaft W, which adjusts 'the head P at different angles for the double purpose set forth. 7

My patent hearing date December 21, 1875, fully covers the slotted bar D, Fig. 2, excepting the rectangular slotted arms 0 c at each" end of the same, which constitute one of the fundamental parts of. this application.

The togglejoints and weights are in common use; but a single weight, G, operating upon a crank-lever, L, at'the side of a machine, I believe to be a better arrangement for operating the front presser-f'oot and slotted bar D. The novelty of this invention consists in the manner of constructing. and arranging the bar E swinging in a sleeved bearing, H, upon the pin N, and adjustable in the slotted standard F, and provided with the sliding loops m and y, the loop m being attached to the oscillating presser-head, which is operated by the screw-shaft W for the don ble purpose set forth.

I disclaim the slotted adjustable bar D, operating in a curved line by means of curved slotted arms B, as set forth in my patent of December 21, 1875, and numbered 171,296.

In a wood-molding machine the combination of the adjustable pivoted bar E, open standards F F, loops y and mi,- pin 1', transverse screw-shaft W, and presser-block V, in the manner and for the purposes set forth.

In testimony whereof I hereunto subscribe my name in the presence of two witnesses.

, JOHN S. LOOMIS.

Witnesses:

JAMES P. IVICLEAAN, JOHN -K. MGLEAN.