USRE8196E - Improvement in machines and processes for making paper tubes - Google Patents

Description

A. G. BATGHELDBR.

Assignor, by mesne Assigments, to J. H YHAWORTH and W. S. Wmsog Machine and Process for Making Paper Tubiaez= Reissued April 25,1878.

- thedesired lengths for use.

UNITED STATES PATENT OFFICE.

ASAHEL G. BATOHELDER, OF LOWELL, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO JOHN H. HAWVORTH AND WALTERS. WATSON,

OF SAME PLACE.

' IMPROVEMENT IN MACHINES AND PROCESSES FOR MAKING PAIER TUBES.

Specification forming part of Letters Patent No. 158,354, dated January 5, 1875; Reissue No. 8,196, dated April 23, 1878; application filed October 26, 187T.

To all whom it mag concern; Beit known that I, ASAHEL G. BATCHEL- DER, of Lowell, Middlesex county, Massachusetts, have invented certain Improvements in to that described in United States Patent No. 95,670, granted October 12, 1869, to -H.

and J. Douglass, each of the machines being. to convert a strip of paper into a-tube, to be subsequently reduced to short pieces, termed cop-tubes. I disclaim the mechanism and I the process described in said patent.

The common form of cop-tube machine embodies a cylindrical hollow mandrel, a series .of grooved rollers for-shaping and carrying forward the tube, and a suitable pasting ap- '.paratus, by means of which a strip of paper is formed into a continuous tube to be cut into In practicing my invention I employpaper suitably pasted, and the mandrel furnished with a bore-finisher, as herein afterward described; but, instead of the grooved shapingrollers heretofore used to form and carry forward the paper tube, I rely on some other suitable means to draw the tube off the mandrel and away from the machine, and I wrap the paper strip around the mandrel by a series of springs or fingers, shaped at their bearing ends'to conform to the cylindrical mandrel, but exerting more or less friction upon the outer surface of the paper, so as to-lay it smooth and avoid wrinkles. These frictionbenders are a peculiar feature of my invention. I adapt one of them especially to extend beneath'the lap, and lay the inner edge of the paper smoothly upon the mandrel, in

readiness to receive the outer fold to be overlapped and pressed upon it, 4

Another peculiarity of. myinvention, designed particularly for finishing the laps, is a rotary tube or edge-layer, which presses down and smooths between itself and the mandrel the outer fold of the paper uponthe My invention alsoembraces, as the final finishing mechanism for both the inner and outer surfaces of the tube, .an enlargement of the mandrel, termed by me as an expander or bore-finisher, which stretches and smooths the inside of the tube, and gives it a uniform caliber, and, in combination therewith, a finishing-tube surrounding the expanded part of the mandrel and acting upon the outside of the tube at the same time the bore-finisher is operating upon its inner surface. My invention also consists in the process herein described of producing paper coptubes.

In the annexed drawing, Figure 1 is a top View, Fig. 2 a side elevation, and Fig.3 a

longitudinal section, of a machine embodying my improvements.

'A- is the horizontal mandrel, upon and I around whichthe tube is formed. B is asuitable supporting-standard for the mandrel, hold; in g it in convenient position to receive thepaper strip C. A series of spring-fingers, E F G H, secured at one end to the'machine, and curved at or near the other end to conform in shape to the cylindrical mandrel, act-upon thepasted paper strip to wrap it around and shape it to the mandrel, and press the overlapping edge upon the inner fold, so as to form a continuoustube, O. The bender H extends beneath the overlapping edge of the paper, and lays the inner edge down smoothly upon the core A, while the other fingers bear successively, and from different directions, upon the outside of the paper, and press with some degree of friction upon ,the same,'-so as to unite the folds and prevent creases or wrinkles therein as the tube is drawn through the machine between the mandrel and the spring fingers. The dction and stiflness of the springs.

In front of these friction-benders I use a rotary edge-layer, K, which is a short tube congree of pressure varies according to the posicentric with and encompassing the mandrel and'paper tube. 7 It is supported in a bearing at each of which it receives a certain degree "frictional contact with the forming and finishing devices.

to the mandrel, and adapted. to operate sucin a standard, D, and is provided with a pulley, L, and a driving-belt or other suitable means of rotation. A brush, M, is secured to the pulley, so as to revolve with it and the tube K around the mandrel. These devices press down the edges, close the lap,'and remove the surplus paste from the exterior of. the tube, giving it a preliminary finish for the purpose of more completely laying the edges or laps.

The final action of the machine upon the tube remains to be described. Near its outer end the mandrel is gradually enlarged, as shown at N, and from thence it is cylindrical,

asat 0, having there a diameter considerably greater than along the part upon which the tube is first formed. The parts N O, I term the expander or bore-finisher, their purpose being to take up all the slack in the paper, to, enlarge the tube, and to make it of uniform bore throughout. To guard against undue expansion or rupture of the tube, as well as to give it a final outward finish, l surround theenlarged part of the mandrel with a tube or finisher, P, mounted upon a suitable standard, and held in such position that the tube is compressed and finished as a Whole between the parts 0 and P at the same time, and after its expansion by the part N. Thus, the tube con structed by this process and mechanism is subjected to pressure at three difi'erent points,

{if finish, and is exposed to outward detaining I claim as'of my invention- 1. The combination, in a machine for making paper cop-tubes, of a mandrel circular in cross-section, with a series of stationary friction-benders, shaped at their bearing ends; to conform to the cylindrical mandrel, and adapted to wrap the 'pasted strip about the mandrelwithout wrinkles, substantially'as set forth.

2. The combinatiomfwith a suitable mandrel, of a series of elastic fingers, shaped near their hearing ends to conform, generally,

eessive'ly. and from different directions upon the paper strip, substantially as set forth.

the same, so as to lay the inner folds thereof smoothly and firmly upon the mandrel, substantially as set forth.

at. The combination of two tubular outside finishers with tube-forming mechanism, substantially as described.

5. The combination, with a mandrel and a series of-strip-benders, of a lap-finishing brush adapted to revolve about the mandrel, sub stantially as set forth.

6. A mandrel for paper-tube machines, havformed, and an expander or bore-finisher, N O, in combination with a tube-finisher, P, surrounding the borc-finisher, substantially as set forth.

7. The combination, with stationary friction mechanism for forming paper tubes, of

surfaces of the tubes, e

' 8. In a, machine for making paper copand secured to the base or frame, so as to press with. friction uponthe pasted paper strip and ASAHEL e. BATCHELDER.

Witnesses:

W. R. BATCHELDER, A. H. SPENCER.

3. In a machine for making paper'coptubes, a cylindrical mandrel, in combination with stationary friction-benders conforming 3 thereto, one of said benders being curved, and adapted to extend between the folds of 1 the pasted strip of paper to the inner edge of ing a suitable body, upon which the tubes are apparatus, substantially as described, for si- 7 multaneously finishing the inner and outer tubes, an elastic bender, shaped to conform at its bearing end to the cylindrical mandrel, H

unite the folds thereof, substantially asset"- of producing cop-tubes, which as described, the tube thus formed being

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