US2290199A

US2290199A - Tube-forming machine

Info

Publication number: US2290199A
Application number: US198614A
Authority: US
Inventors: Rex E Moule
Original assignee: Individual
Current assignee: Individual
Priority date: 1938-03-28
Filing date: 1938-03-28
Publication date: 1942-07-21
Anticipated expiration: 1959-07-21

Description

July 21, 1942. R. E. MOULE 2,290,199

TUBE-FORMING MACHINE Filed March 28, 1938 I 2 E E I g K ffi lallf llllllll III] ll ll IN VENTOR. 0121a,

A TTORNE Y.

Patented July 21, 1942 TUBE-FORMING MACHINE 7 Rex E. Moule, Detroit, Mich. Application March 28, 1938, Serial No. 198,614

(Cl. 1s 19) 2 Claims.

This application relates to machines for making gelatin tubing from which fluid-filled gelatin capsules may be made.

For an understanding of the machines lierein disclosed reference should be had, to the accompanying drawing.

In the drawing: 7

Fig. 1 is a plan view of a multiple mandreltwo strip construction;

Fig. 2 is an elevation view of Fig. 1 with parts omitted;

Fig. 3 is a section on line 22 of Fig. 1;

Fig. 4 shows a mandrel in bottom plan view.

The drawing shows an apparatus for transforming two substantially flat strips I Id of gelatinous material into a tube or simultaneously into a plurality of tubes. In this construction, there are a plurality of hollow mandrels H5 located between spaced pairs of disks H2. These -disks are mounted upon and fastened to axles or shafts HI so that theyma'y be rotated in the process of forming the tubes. Each mandrel, about which a tube is made, is positioned between two pairs of disks spaced from each other a distance substantially equal to the diameter of the mandrel plus the thickness of the strips. The strips are fed into the apparatus, one on each side, and into contact with the disks H2 which are rotated towards each other, the peripheries ofthe disks being in substantially abutting relation.

The movement of the disks moves the strips into contact with the mandrels and the disks engage the two strips in between the mandrels so as to press them together to unite the strips into one or more tubes depending upon the number of mandrels used.

It will thus be seen that the apparatus is so constructed and arranged that whentwo substantially flat strips of gelatinous material of a width at least equal to the distance between the pairs of disks are fed into the bights between the disks of each pair and on opposite sides of the mandrel or mandrels, the strips are contacted and moved around the mandrel or mandrels and pressed together by the peripheries of the disks to unite the strips into -the form of a tube or a plurality of tubes. When a plurality of tubes are made, the pairs of disks are separated from each other a distance substantially equal to the diameter of the mandrel plus twice the thickness of the strips. The mandrels are hollow so that medicament may be passed through them and into the tubes while the tubes are being made.

tubes, when made, are used for the purpose of These making capsules filled with medicament, as set out for example in my application filed July 25,

1939, Serial No. 286,315, being a continuation of application No. 99,886, filed September 8, 1936. K

The hollow mandrels may have their lower ends Il5a wedge shaped to provide annular shoulders I H5 or they may be of some other form such, for example, as shown in my prior application above being spaced from each other a distance substantially equal to the diameter of the mandrel plus twice the thickness of the strips, the peripheries of the disks of each pair being in substantially abutting relation, said disks and mandrel being so constructed and arranged that when two substantially flat strips of said mandrel of a width at least equal to the distance between the pairs of disks are fedlinto the bights between the disks, of

each pair and on opposite sides ofthe mandrel, the strips are contacted and moved around the mandrel and pressed together by the peripheries only of the disks to unite the strips into the form of a tube. I

2. An apparatus for transforming substantially flat strips of gelatinous material with a plurality of tubes comprising a plurality of hollow mandrels a plurality of spaced pairs of rotatable disks, each mandrel being positioned between two of said pairs of disks, and said pair of disks being spaced from each other a distance substantially equal to the diameter of the mandrel plus twice the thickness of the strips, the peripheries of the disks of each pair being in substantially abutting relation whereby when two substantially flat strips of said material of a Width at least equal to the distance between the pairs of most widely spaced apart disks are fed into the b'ights between the disks, of each pair and on opposite sides of the mandrels, the strips are contacted and moved arounda plurality of the mandrels and pressed together by, the peripheries only of the disks to unite the strips into the form of a plurality of tubes.

REX E. MOULE.