US320720A - Machine for forming pulp into vessels of various kinds - Google Patents

Description

(No Model.)

G. M. STEVENS. v V MACHINE FOR FORMING PULP INTO- VBSSELS OF VARIOUS KINDS.

Patented June 23 [nvenon W j v /f UNITED STATES ATENT Orrrcn.

GRENVILLE M. STEVENS, OF PORTLAND, MAINE.

MACHINE FOR FORMING PULP INTO VESSELS OF VARIOUS KINDS.

SPECIFICATION forming part of Letters Patent No. 320,7 20, dated June 23, 1885.

Application filed July 9, 1884. (No model.)

To all whom it may concern:

Be it known that I, GRENVILLE M. STEVENS, of Portland, in the county of Cumberland and State of Maine, have invented certain new and useful Improvements in Machines for Forming Pulp into Vessels of Various Kinds; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference'marked thereon, which form a part of this specification.

Figure 1 is a top view. tional elevation.

Same letters show like parts.

Myinvention relates to machines for making ware and other such articles of pulp. It employs centrifugal force for the power by which the different vessels are formed.

Any kind of vessel can be made and formed in my invention.

The former or vessel into which the pulp is introduced determines the shape of the article to be formed.

The principle or mode of operation is this: Pulp in a measured quantity, mixed with the proper amount of water, is introduced into Fig. 2 is a side secthe forming vessel or receptacle while said' vessel is in a condition of rapid revolution on a vertical axis. The pulp is thus, by the action of centrifugal force, thrown against the inner periphery of the cylinder and formed as the said cylinder is f0rmedthat is, into the desired shape. The water is thrown off through sieves and perforations, as will be hereinafter more especially described, and the pulp thus left comparatively dry, compacted, uniformly placed and deposited, and formed into the vessel sought to be manufactured.

The interior of the forming-vessel (as I shall call it in this specification) is furnished, first, with an interior lining of fine wire-netting, then with one of a coarser texture, and then with a series of upright rods a little distance apart. The cylinder itself is perforated with numerous holes sufficient for the escape of the water. The forming-vessel is surrounded by a conical cylinder with the end of the.

smaller diameter at the top. This cylinder has scuppers, through which the water escaping from the pulp runs off out of the machine. The perforated cylinder is furnished on the outside with ears. The cylinder is composed of three curved parts, which, when placed together, form the cylinder.

At the top end of my device is a yoke, H, with an aperture, L. This yoke H fits inside of the cylinder, and is made to fit tightly by rubber rings b.

At E are the upper ends of rods passing down through rings F F F. These rings have inclined edges to fit against the inclined edges of the ears 0 on the outside of the perforated cylinder. The upright rods pass down through the rings F, &c., and through the bottom flange, B, of the machine, where they are secured with nuts. The bottom flange supports the whole structure.

The outer perforated cylinder is shown at G, and rests in a recess in the center of the flange B. Next are the rods shown at n. Next is the coarser sieve. (Shown at K.) Next is the finer sieve. (Shown at K.)

A is the shaft, rigidly connected with the flange 13, so as to impart its rotation thereto.

M are the perforations of the cylinder.

I are arms extending from the lower side of the yoke H to a cap, m. Into this cap is fitted the rod 19. This rod slides in and out of the sleeve J. The rod pis held at any position by the screw or other device a".

That part of the yoke H surrounding the aperture L may be made capable of being drawn down into the cylinder G, and its distance from the bottom of the cylinder determines the height or length of the vessel to be formed in the cylinder.

I is a conical bottom filling the bottom end of the cylinder G. To make it tight, it rests upon a rubber packing, I).

As shown in the drawings, the device is arranged to make a roving-can; but, as before observed, the shape of the interior of the forming-cylinder can be varied to suit the form of the vessel desired to be formed.

\Vhen the parts are all put together, and the shaft A caused to revolve rapidly, the pulp and water are introduced at L. The revolution ICO spring away from the outside of the formed article, or may be removed. The Walls of the formed vessel can then be placed away to dry and mature. The bottoms are then nailed in in the common way, if the article is formed without the pulp bottom. It will be seen that great rapidity in the manufacture is thus secured, and uniformity in the character, density, compactness, and thickness of the walls of the vessel made. 7

No pressure is employed to express the water, as in many machines for the like purpose with mine. The divisions of the cylin der G are indicated by the lines t in the top View, Fig. 1.

It will be understood that the outer cylinder, 0, may be stationary, while the inner cylinder, G, revolves within it and within the rings F, &c. To efiect this, the shaft A is splined onto the bottom of the rod J, as seen at I. In this case the shaft A would turn in its socket in the flange B. WVhen the whole machine, including the outer cylinders, revolves together, avacuum is produced around the cylinder G, that both aids in drawing the pulp to proper position and aids in its distribution on the sieve, and also draws off the water from the introduced pulp.

WVhat I-claim as my invention, and desire to secure by Letters Patent of the United States, 1s-- l. The perforated cylinder G, the rods, and theinner and outer sieves of different textures, in combination with the conical bottom I, yoke H, aperture L, and rods J and p, and arms I, the same to be operated as herein set forth.

2. In combination with the inner cylinder, G, and its contained devices, the outer cylinder with scuppers D, and the flange B, as herein set forth.

3. The combination, with the cylinder G, of the movable part of the yoke A, arms I, and rods J and p, to regulate the height of the vessel to be formed, as herein set forth.

In testimony that I claim the foregoing as my own I affix my signature in presence of two witnesses.

GRENVILLE M. srnvnns.

Witnesses:

WILLIAM HENRY CLIFFORD, JOHN P. KERRIG-AN.

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