US1047946A - Apparatus for making paper tubes. - Google Patents

Description

G. F. JENKINS.

MDPARATUS PoR MAKINGPAPBR TUBES.

APPLICATION FILED MAY 18, 1909.

Patented DeG.24,1912.v

n//r/ //f/////////////` Zhilillll UNITED STATES PATENT oEEioE.

CHARLES FRANCIS JENKINS, 0F WASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR TO SINGLE SERVICE PACKAGE CORPORATION OF AMERICA, 0F NEW YORK, N. Y., A

CORPORATION OF' NEW JERSEY.

Specification of Letters Patent.

Patented Dee. 24, 1912.

Application filed May 18, 1909. Serial No. 496,743.

To all whom it may concern:

Be it known that I, CHARLES F RANCIS JENKINS, a citizen of the United States, residing at IVashington, in the District of Columbia., have invented certain new and useful Improvements in Apparatus for Making Paper Tubes, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to making paper t-ubes by winding superposed st-rips spirally,

and particularly to coating or impregnating the interior of such tubes with waterproofing material or the like while the tube is being formed and at the same time constantly lubricating the surface of the mandrel. Thematerial usually employed is liquid paraffin, the same being ordinarily, but` not necessarily, liquelied by heat. Such .e tubes are commonly formed by winding strips upon a hollow mandrel, and in accordance with this invention the treating liquid is supplied t0 the interior of the tube through one or more openings in the wall of the hollow mandrel.

In the accompanying drawings, Figure 1 is an axial sectional elevation of a portion of a hollow mandrel with its support and with my devices in operative osition. Fig. 2 is a. plan view of the same evices. Fig. 3 is a bottom planview ofa portion of the mandrel seen in the other figures.

In these views, A represents a tubular mandrel Xed in a rigid frame or support B.

C designates a suitable tank, preferably Yabove the pla-ne of the mandrel, for containing paraffin, for example. From the tank a pipe D controlled by a valve E leads into the interior of the mandrel and delivers the contents of the tank through a slot. F in that portion of the mandrel wall upon which strips G, H of paper are wound, the slot F being materially longer than the width of a strip, so that the entire inner surface of the inclined strip must pass over the slot. The strips are usually wound by a belt, shown in dotted lines I, which draws the strips forward around the tube, presses them together and continuously slides'.V the formed tube4 as these slip around aswell as along the mandrel constantly presenting new surface to the slot the whole surface will be progressively supplied with the liquid, and. the

material so supplied will be vrubbed in under high pressure and forced into every pore and crevice as it will not be by simply dipping the article after it is formed, nor even by carefully and thoroughly applying the material with material advantage is that when paraffin is used it serves as a lubricant, eliminating a large part of the friction between the paper and the mandrel and preventing the tearing of any thin or fragile paper which could not otherwise be used wit-h the belt-winding machine.

In order to secure the bestresults,lwith most materials, it is desirable that.the liquid shall "be hot, and with many materials thatthe pipe shallbe heated to preventclogging, or to liquefy material which may cool in the pipe when the apparatus is inactive. A heating burner J is therefore placed at some distance below the tank and below the open side of a chamber K provided with a foraminous air delecting diaphragm L and having an outlet M immediately below the tank and controlled by any suitable device at N, and also having an lopen branch O inclosin a portion of the pipe and preferably ittlng the interior of the mandrel. The burner, being lighted, heats the surrounding air which rises into the chamber and .escapes through the mandrel andalso immediately below the tank, the total heat being controlled, as usual, by the burner valve. Both the mandrel and the tank are thus heated, and when desired all or anabnormal portion of the hot air may be discharged through the mandrel.

What I claim is: Y

1. The combination with a hollow mandrel having a lateral opening, of a tank for paraffin, a valve controlled conduit leading from the tank to said opening, an air heating burner, means for discharging air heated by the burner through said mandrel and against .said tank, means for controlling the total heat, and means for varying the heat delivered to the tank.

2. The combina-tion with a hollow, terminally open mandrel having a. lateralaperture between its ends, of a tank for parafa brush. Another very.

fin, a pipe, of less diameter than Athe inter' In testimony whereof I aiix my signaror ofdthe mandrel, leading lfrom sai tank ture in presence of two witnesses.

to sai aperture, an air eating evice, v

means for directing air heated by said de- OHARLES FRANCIS JENKINS' 5 vice into the mandrel, and means for at Witnesses:

will varying the amount of heated air enter? J AMES S. CRAWFORD,

ing the mandrel. WM. M. BIRNEY.

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