US813984A

US813984A - Paper-making apparatus for separating sand, metal, and other impurities from pulp.

Info

Publication number: US813984A
Application number: US28876405A
Authority: US
Inventors: Joseph Macnaughton
Original assignee: Individual
Current assignee: Individual
Priority date: 1905-11-23
Filing date: 1905-11-23
Publication date: 1906-02-27
Anticipated expiration: 1923-02-27

Description

PATENTED FEB. 27, 1906 J. MAGNAUGHTON. PAPER MAKING APPARATUS FOR SEPARATING SAND, METAL, AND OTHER IMPURITIES FROM PULP.

APPLICATION FILED NOV. 23, 1905.

A W r WW a WITNESSES 6/ ATTORNEYS To all whom it may concern;

- UNITED STATES PATENT OFFICE.

JOSEPH MACNAUGHTON, OF EDINBURGH,'SCOTLAND.

PAPER-MAKING APPARATUS FOR S EPARATING SAND, METAL, AND OTHER IMPURITIES FROM PULP.

Specification of Letters Patent.

Patented Feb. 27,1906.

Application filed NovembenZS, 1905. Serial No. 288,764.

Be it known that I, J OSEPH MAONAUGHTON,

I paper-mill manager, a subject of the Kin of Great Britain and Ireland, residing at 3 ester Coat'es Terrace, Edinburgh, Scotland, have invented new and useful Im rovements in Connection with Paper-Making A paratus for Effecting the Separation of an Metal, and other Impurities from the Pulp, of which the following is a specification.

My invention has for its object to provide means whereby the separation of sand, metal, and other impurities from paper-pulp on its, way tothe breast of the paper-making machine is ef'fected in .a-more efficient manner than hitherto by ap aratus which occupies but small space and which can be cleaned with great ease in a much shorter time and with the use of a much smaller quantity of water than is necessary for cleaning the.

sand-traps hitherto used.

The ap aratus according to my invention consists of a conical casing or vessel arranged in connection with the pa er-making machine so that the paper-pu p on its way-to the breast of the paper making mac he passes through the said casing or vessel, pref? erably so that the pulp has a circular or whirling motion through and around the said casing or vessel. The lower end of the said cas ing or vessel opensinto a box or receptacle for the deposit of sand, metal, and other comaratively heavy impurities from the pulp, ighter impurities which rise to the surface of the pulp in the said casing or vessel bein removed, preferably by passing off throug an overflow in the casing or vessel situated at the part thereof whereat the said lighter impurities tend to collect,'the said overflow being preferably provided with means by which its height can be adjusted. The purified pulp passes from the said casing or vessel by means of a pipe or passa e extending down into the interior of the sai casing or vessel to such a distance from the lower and up er parts thereof,respectively, as will not all bw either the heavier or the lighter impurities aforesaid to pass off with the pulp to the breast of the paper-making machine.

I will describe with reference to the accompanying drawings an apparatus constructed in accordance with my invention, premising that I do not limit myself to the precise da tails illustrated.

Figure 1 is an elevation, and Fig. 2 isa plan.

have

The conical vessel A is 0 en at bottom and communicates with a box having an outlet provided with a valve b for the withdrawal of deposited matter. The inlet C for the pul to be purified is arranged so that the passes tangentially into the casing sai' pul or vesse whereby the pulp has a circular or whirling motion as it passes down through the said casing or vessel. The said casing or vessel A is shown with plain sides; but it may ooves or corrugations extending down its si es. I

D is the pipe for the outlet of the purified pul from the casin or vessel A, the lower en of the said ipe opening into the'interior of the sai easing or vessel at a point such that the pulp will be drawn off as free as possible from impurities, the upper end of the said pipe D communicating with the outlet (1, from which the ulp passes to the strainers and thence into t e passage leading to the breast of the paper-making machine.

If desired, the pulp after passing from the casing or vessel A can pass through an ordinary sand-trap before passing to the strainers and breast.

In any suitable part of the apparatus such as the outlet-pipe D, for example there may be magnets to separate any fine magnetic particles which may not separate from the pulp in the casingor vessel A; but

I do claim as my invention the use of magnets for separating magnetic particles from p pa E is an opening through the upper part of the casing or vessel A, constituting an overflow, as aforesaid, for any impurities which may rise to the surface of the pulp in the said casmg'or vessel A. The height of this overflow can be regulated by the weir e, capable of bein raised and lowered b the screw e The pu p which passes off witfi impurities through any suitable pipe or passage can be separated by any convenient means, such as an auxiliary strainer, and returned to the supply of pulp to be purified.

At intervals, as desired, the deposited matter can be removed from the box B by opening the valve 1), and when changing or washing up the paper-making machine my apparatus can be very efliciently and quickly cleaned with a much smaller amount of water than is required for cleaning ordinar sandtraips and with a minimum loss of pu p.

f desired, more than one apparatus as described can be used in series;

such floating Having now particularly described and ascertained the nature of my'said invention and in what manner the same is to be performed, I claim as my invention- 1. In connection with paper-making aparatus, a casing, or vessel, such as A, situated so that the pulp passes through it on its Way to the breast of the paper-making machine, the said casing, or vessel, being provided, at bottom, with a box, or receptacle, for heavy impurities, and having an outlet, commumcating with the interior of the said casing, or vessel, for the escape of purified pulp; substantially as hereinbefore described.

2. In connection with a paper-making a paratus, a casing adapted to permit the pu p to pass through it on its way to the breast of er-making machine, a box at the botthe pa said casing for heavy impurities, and

tom 0 an outlet from said casing, in combination with an outlet for lighter impurities.

3. In combination with a paper-making machine, a casing adapted to permit the pulp to pass through on its Way to the breast of the paper-making machine, an inlet passing tangentially into said casing, a box at the bottom of said casing for heavy impurities, and a central outlet from said casing for the escape of purified pulp.

4. In connection with a paper-making machine, a casing adapted to permit the pulp to pass through it on its way to the breast of the paper-making machine, an inlet passing tangentially into said casing, a box at the bottom of said casing for heavy impurities, and a central outlet from said casing for the es cape of urified pulp, in combination with an adjusta le outlet for lighter impurities at the side of said casing.

In testimony whereof I have signed this specification in the presence of two subscribing Witnesses.

JOSEPH MACNAUGHTON.

Witnesses:

PERCY READ GOLDRING, RICHARD BUNDY.