US2262515A - Manufacture of covered tubing - Google Patents

Description

' Nov. 11', 1941.

K. PAPE MANUFACTURE OF COvERED TU BING Original Filed April 27, 1940 ATTORNEYS tPctcntedNov. 11, MM

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' WlrE ms PATENT oss'lc 2,252,515 i mos-Across 0s oovnmm rooms Karl Pane, mover, N. 3., casino: to Beslstoflex @omomtlcm, Belleviile,

New York N. #1., a corporation of original commotion April 27, 1940, Serial No, 331,952.. Divided and this application April 2t,

1941, Serial No. zooms? a v comm. This invention relates to, the manufacture of linear articles which have, a woven or braided covering.

' More particularly, the invention pertains to cpparctus tor use in the step of bonding such cov- (031. ti -l8) the following description, taken in connection ering to the underlying material by the application of solvent or solvent vapor.

This application is o division of my co penollng application Serial No. 331,952, filed April 2'3,- I

1940, wherein there is described at method. of covering tubing of synthetic plastic material with a woven or braided iabrlm The apparatus hero in described and claimed may be userl in conv ing outvthe covering of tubing but its use is not limited thereto as it may be used in bonding fabric covering to other lines; crtlcles such as insulated wire or the like.

As-is well known, linear articles, such so flesible tubing, may have s. tabrtc covering formed directly thereon in various typos ot'hrodino rowchines or looms for weaving tuholoc tshrtc.

It is to be understood that the term sweatlog cs'usedhereinafter or in the claims is intended to includes braiding as o, particular type rial may he efiectccl and to that cool to 'outormatically stop the oppllcotioh of solvent lllpfit'i stopping of the machine by which the covcrtnc is being formed.

Other objects and eclvcntoccs will cppeor in the course of the following ooscrtotlmou As on illustration of how the invecttoc. may he procticem the present pretcrcctt cmhocltcocht thereof will he clcsctihccl. Eh closet this embodiment the ootcrioc o1? moms or? flex this and elastic polyvinyl alcohol composition will he'useolos on emmhlo plastic more or less soluble wotct and 'cscoh'le he r; sottch eol slightly and rendered cohesive co its surface when subjected. to steam for only a short time;

with the drawing in which:

Fig. l shows certain essential parts of o crotch 1m; machine with the addition of as solvent to plying device for use in accordance with the hit-=- vention; 1

Fig. 2 shows the means for controlllncthc so plicotion of solvent to the tubing and its solotlonshlp to the braiding machine, port ot-which; is shown somewhat schemctically;

Fig. 3 shows, in greater detail, thccutomctto air control and th means for cctucting it upon stopping of the braiding machine: 1 1 Fig. 4 is e, vertical longitudinal section. through the solvent applying chamber; I

Fig. 5 is a. section of the some onthc line hzc-hc ting. t; and. 1

h Fig. 6 iso cross-section on the line tc-tzo ct Fig. c. h r

Referring to the drawing, Fig. I shows certcin ports of a common type of braiding machine tneluding c slotted plate it, the slots in which tic:

. termine the trove! of carriers it which care The covering of this timing may he cccom plishecl in s. hrottling machine otwcll hnown construction; *orcferohly with certain moclhcc tions such as those oescz'loetl in my otolesclcl oil-pending application. The omorctus of the present invention mot he userl. and operated lo combination with the mechanism of such c, braidactuated-in the usual manner by at cost trots (not shown). Each carrier holds. the scoot cylindrical cross-wouncl spool E53 and its provhlc-ol with the usual ycm tensiontng device fit. The plate M has at central cporturc tit through which posses the tubing 2h which'is to he covct'ctl. (After mine covered, the tubing is clesignotctt M). The tubing is usually unwound from c, root (not shown) underneath the machine. its is wch known the carriers, which may vary in mom or but of which there ore ususlly ct lccst ttcvct 9 about the tubing in such mower os-to 'wecvc hrslcl thereon. The tubing posses upworctigv owes: o rotating ccpetsh ht. To holol th to contact with the ccpstch, ,ctootwl roller 2t ls usocliy promoted and is press tho capstan o sultohle moons. As the to 2t passes oh? the ccpstcc. ht, it to chit-octet through the solvent opgalyhm clecilcc If it is desired to :mcintoih the t1 under on imitating got'cssme the 5 process, oshcct length ct flexible tubing c be provided-with c fitting M which con scrtecl into the end of the tubing inc is connected with c compressed moo which may be equipped with pressure The other eml of tho whic mot he cm tight by folding it over cncl clamping it, cs choc/"L at 3t. I V v "the chamber th in which the solvent is opphccl for bonding the covering to the tubing as it lccvcc mg machine, o, he readily understood from 555 the capstan is shownincletcil in t, ll coal 6,

ecstatic but prevents steam or condensate from entering.

V with means for automatically stopping the ma andis constructed as follows: The chamber proper is a sheet metal cylinder, the ends or which are closed except for ope ngs in the upper part through which the tubing 20' passes. These openings are preferably in the form of short 5 tubes 60, 8|, the edges 0! which are turned inwardly to closely fit the tubing 20'. The tubes l0, 6| are provided-with openings 62, 63 within the chamber 29 through which any condensate can drain into the chamber. A pipe 6 having a central opening 65 passes through the chamber from one side to the other and is secured therein by soldering'or the like, so that the opening of the pipe is directed away from the tubing 20, thus preventing the steam, which is the solvent vapor 'used in this embodiment, from blowing directly,

against the tubing. The pipe 64 is connected at one end to a steam line 66 in which is interposed a manually operated valve 61 having a hand wheel 88 which is extended to a position convenient for the operator of the braiding machine.

The other end of the pipe 64 is connected to a compressed air line 69 containing a check valve 10 which permits air to enter the chamber 29 til the air line. At the lowermost portion of the chamber 29, as it is normally positioned as shown in Fig. l, it opens into a drain pipe H.

In order to obtain the correct amount of steam, the valve 61 is openeduntil the steam can be seen emerging from the tubing 60 or 6| and it is then shut down to the point where there is just enough steam escaping to be visible.

Braiding machines are customarily provided chine whenever a yarn breaksor a spool becomes empty. If the application of solvent were allowed to continue during the periods when the braiding machine is stationary, some sections of the tubing 20' would be subjected to the effects of the solvent for longer periods than others, which would be liable to damage the tubing and would produce a non-uniform product. The present invention provides means for automatically scavenging the steam or other solvent from the chamher 29 immediately upon the stoppage of the machine. As shown in Figs. 2 and 3, the air line 69 is controlled by a plunger type air valve 80 which is actuated by a plunger 8|. This valve is mounted adjacent the standard trip device 82 which is pivotally mounted on the plate'll of the braiding machine adjacent the slots 84 in which the carriers l2 travel.

As is well known, when ayarn breaks or a spool becomes empty, a shoe 85 on the carrier I2 (Fig. 1) drops to the bottom of the carrier and engages the trip lever 82,- the path of the shoe 85 being indicated in. dotted lines in Fig. 3. This I moves the lever 82 to the right, as shown' in the drawing, and disengages a clutch (not shown) through the medium of an upwardly extending stud 86. The lever 82 at the same time presses against the plunger 8 I and admits air into the air line 69, the manually operated air valve being open at this time. The lever 82 remains in this position, holding the air valve 80 open, until the machine is started again by moving lever 82 to the left. Immediately on. stopping of the machine, however, the operator closes the steam valve 61 and thereafter closes the manual air valve 90. When the machine is again started, the steamvalve 61 is opened and adjusted and, the plunger air valve 80 then being closed, the manual air valve 90 is re-opened. The machin is then in condition automatically 'to blow air into the chamber 29 when it stops again. Itthe operator stops the machine, he does so by moving lever 82 to the r ght and the air valve is solvent vapor.

The foregoing detailed description'is to be considered as merely illustrative as various modifications may be made within the purview-of the invention as defined in the claims.

What is claimed is:

1. Apparatus for bonding a woven covering to a linear article by the application of a solvent to said article through said covering as it leaves the machine by which said covering is applied, said machine being provided with stopping mechanism including a part which is moved in one direction upon stopping and in the opposite direction upon starting said machine, said apparatus comprising a chamber through which said article passes after being covered, a conduit adapted to introduce solvent for the article into said chamber, an air line adapted to introduce compressed air into said chamber, and a valve in said airline operatively associated with said part so as automatically to be opened upon the movement of said part when the machine stops and closed upon the opposite movement of said part when the machine starts.

2. Apparatus for bonding a woven covering to a linear article by the application of a solvent to said article through said covering as it leaves the machine by which said covering is applied, said machine being provided with stopping mechanism including a part which is moved in one direction upon stopping and in the opposite direction upon starting said machine, said apparatus comprising a chamber through which said article passes after being covered, a conduit adapted to introduce solvent for the article into said chamber, a manually operated valve in s conduit, an air line adapted to introduce co pressed air into said chamber, and a valve in said air line operatively associated with said part so as automatically to be opened upon the movement of said part when the machine stops and closed upon the opposite movement of said part when the machine starts. 7

3. Apparatus for'bonding a woven covering to a linear article by the application of a solvent to said article through said covering as it leaves the machine by which said covering is applied, said machine being provided with stopping mechanism including a part which is moved in one direction upon stopping and in the opposite direction upon starting said machine, said apparatus comprising a chamber through which said article passes after being covered, a conduit adapted to introduce solvent for the article into said chamber, a manually operated valve in said conduit, an air line adapted to introduce compressed air into said chamber, and a valve in said air line operatively associated with said part so as automatically to be opened upon the movement of said part when the machine stops and closed upon the opposite movement of said part when the machine starts, and a second manually operated valve in said air line.

4. Apparatus for bonding a woven covering to a linear article by the application of a solvent to said article through said covering as it leaves the machine by which said covering is applied,

said machine being provided with stopping mechanism including a part which is moved in one within the chamber directed away from the path of said article, a conduit connected to one end oisaid pipe for conveying solvent thefretd an air line connected to the other end oi said pipe for conveying compressed air thereto, and avalve in said line operatively associated with said part so as automatically to be opened upon the movement of said part when the machine stops and closed upon the opposite movement of said part when the machine starts.

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