US1585360A - Twisting machine - Google Patents

Description

May 18,1926. f. E. F. BALDWIN TWISTING MACHINE Filed March 9. 1922 2 Sheets-Sheetl l May 18 1926. 1,585,350

E. F. BALDWIN TWISTING MACHINE Filed March @-1.922 2 Sheets-Sheet 2 Patented May 18, 1926.

t UNITED STATES PATENT OFFICE.

EARL F. BALDWIN, OF GARDNER, MASSACHUSETTS, ASSIGNOR T AMERICAN FIBRE CORPORATION, OF GARDNER, yMASSACHUSIETTS,

SETTS.

A CORPORATION 0F MASSACHU- TWISTING MACHINE.

Application led March 9, 1922. Serial No. 542,219.

This invention relates to machines for twisting strips o'f paper into twine or cord. In the machine of this invention, before the twisting operation the paper is passed through a glue solution so that the finished twine or lcord is firmly held in condition. It is .important that the glue be maintained fluid so that the machine may not become clogged thereby, and so that a supply of glue in proper heated condition to be used may be insured at all times for each 0f the plurality of twisting mechanisms usually grouped together in a single machine. For this purpose this invention provides a circulating system by which the glue is circulated from a supply tank to treating stations for the several paper strips, provision also being made for returning excess glue draining from the strip to the tank.

Means for maintaining the glue in proper heated condition as it is circulated is also provided. j

For a inorecomplete understanding of this invention, together with further objects and advantageous details and combinations of parts, reference may be had to the accom panying drawings in which Figure l is a somewhat conventlonal front elevation of the machine showing `the glue circulating system.

Figure 2 is a right end elevation also somewhat conventional.

Figure 3 is a detail section on line 3-.-3 of Figure 1.

Referring to these figures,v 1 indicates a machine frame having upstanding therefrom a series of spaced vertical posts 2 joined at their tops in pairs by means of cross members 8. These cross members extend laterally beyond the posts 2 to furnish at opposite ends supporting brackets for various instrumentalities. As shown each bracket portion has an upstanding arm for supporting one of a pair of angle members 4 eXtendlng lengthwise of the machine. These angle members at intervals support depending mandrel members 5 about which the paper strips are passed and formed prior to the twisting operation. Positioned immediately adjacent each row of these mandrels and supported in any suitable manner is an ele.

vated open topped trough 6. As shown this trough is supported agamst the lower face of the bracket portions by means of saddle members 7 engaging therebeneath and made fast to the upright osts 2. The ends of the trough 6 are closed y members 8.

At l0 (see Figures 2 and 3) are shown a pair of shafts extending lengthwise ofthe machine and supported by the frame members 3. `Clamped on one of these shafts adjacent each mandrel 5 journaled at its outer end a guide roll 12. This guide roll dips beneath the surface of glue in the trough and furnishes a guide member for a strip of paper shown at which is led from a paper roll indicated at A. The strip of paper passes over the shaft 107 beneath the roller 12, and over a guide shaft 13 positioned closely adjacent the mandrels 5. The paper passes down about the mandrel, being partially wrapped therearound and is led thereby through a ring member 14 within which the tapered lower end 15 of each mandrel projects and from there is led to a die 16 in which the paper is compressed together into strand formation. After passing through the die each strand passes within a twisting and winding mechanism, indicated conventionally at 20 by which the strands are twisted and wound on spools shown at 21. The twisting mechanism has not been shown in detail as it forms no part of the present invention. j

Each die 1G is carried in a perforated boss extending upwardly from a downwardly and inwardly inclined drain board 26, this drain board having outer and end walls 27 and being open at its inner side to discharge from its inclined top face'into a lower drain trough which is carried by the upper portion of the frame 1. It is therefore apparent that gluecarried over from the trough 6 by the strip of paper and passing therewith down along the mandrel and to the ring 14 finds its way to the drain board 26 and from there to the lower trough j In order that a continuous circulation of glue may be effected to insure that glue in proper condition shall be presented at the paper treating stations and that the glue draining from the paper may be prevented fro-in being wasted, the upper and lower troughs are connected in series in the circulating system. Adjacent one end of is an arm 11 having each upper trough 6 is positioned a flow off pipe 31 which leads down t0 one of the y 35 municates `/wlth branch pipes 61 leading to troughs 30. The glue is supplied to the upper trough 6 through a supply pipe 32 pos1 tioned adjacent the opposite end of the upper trough so that by supplying a suiicient flow of glue from this pipe the level of the glue in the upper trough may be held at the point desired even though the pipe 81 is capable of draining all the glue from the upper trough should the flow thereto be stopped.

At is shown a glue supply which is preferably in the form of a heated glue pot or tank. Any means for heating this tank may be used, such means as shown comprisf ing electric heating units 41. From the lower portion of this supply tank extends a pipe 42 having a control valve 43 therein, this pipe leadlng through an intermediate .pipe 44 to the intake of a pump 45. This pump discharges into an upwardly extending pipe 46 which communicates through a T fitting 47 at its upper end with laterally extending pipes 48 leading to the supply pipes 32 on opposite sides of the machine. The glue from the drain troughs 30 is lcd backto the sup ly tank through pipes 50 positioned at t e opposite ends of the troughs from the pipes 3l.

While the glue is heated in the tank 40, it is desirable to heat it during its circulation. For this purpose steam heating pipes are herein shown. The supply pipefor the steam is indicated at 60 which extends adjacent the to of the machine where it comhorizontal pipes 62 extending lengthwise within each trough 6. At the opposite end of the machine these pipes 62 are passed through the ends 8 of the troughs and there communicate with downwardly extending pipes 63 leading to return horizontal pipes 64 positioned longitudinally within the troughs 30. After extending substantially the distance of these troughs the pipes 64 communicate with a vertical pipe 65 leading back to the steam supply.

In this construction it is seen that the glue is circulated in Va heated condition to the various aper-treating stations and back to the supp y tank, while the glue draining from the paper Iafter it has been treated also finds its way back to the supply so that it has no opportunity to become hard or be wasted. The circulating system is alsoy designed so that if the supply of glue is stopped, the glue in the machine drains back to the supp y so that the machine may not become fouled when out of operation.

Having thus described an embodiment of this invention it should be evident that 'many changes and modifications might be made therein without departing from Its spirit or scope as defined by the appended claims.

I claim:

l. In a paper twisting machine, a supply trough, a drain trough beneath said supply trough, a glue heater into which said drain trough discharges, means for pumping heatT ed glue from said heater to said supply trough, means permitting flow from said supply trough to said drain trough, means for guiding strips 'of paper to be twisted beneath the surface of glue in said supply trough, and means permitting glue to drain from the paper strips into said drain trough.

2. In a paper twisting machine, a supply trough, a drain trough beneath said supply trough, a glue heater into which said drain trough discharges, means for pumping heated glue from said heater to said supply trough, means permitting flow from said supply trough to said drain trough, means for guiding strips of paper to be twisted beneath the surface of glue in said supply trough, and means for heating the glue in said troughs.

3. In a paper strand-forming machine, twisting mechanism, means for supplying a constant fiow of glue to a strip of paper advancing to said mechanism, and means for conducting glue draining from the strip adjacent to said mechanism toy said supply means.

4.r In a paper strand-forming machine, twisting mechanism, means for supplying a constant flow of glue to a strip of paper advancing to said mechanism, means'ffor conducting glue draining frn'i the strip adjacent to said mechanism to said supply means, and means for heating said glue.

5. In a paper twisting machine, an elcvated open topped trough, a lower open topped trough, means for delivering liquid to one end of said upper trough, a Ypipe connection from the opposite end of said upper trough to one end 0f said lower trough, a pipe connection from said lower trough to said delivering means, and heating elements in said troughs.

6. In a paper twisting machine, an elevated open topped trough, a lower open topped trough, means for delivering liquid to one end of said upper trough, a pipe connection from the opposite end of said upper trough to one end of said lower trough, a pipe connection from said lower trough to said delivery means, heating elements in said troughs, and means for passing strips of paper beneath the liquid in one of said' troughs.

7. In a paper twisting machine, an elcvated open topped trough, a lower open topped trough, means for delivering liquid to one end of said upper trough, a pipe connection from the opposite end of said upper trough to one end of said lower trough, a pipe connection from said lower trough to said deli/vering means, heating elements in said troughs, means for passing strips of paper beneath the liquid in said elevated trough, and means for conducting liquid draining from said strips to said lower trough.

8. In a paper twisting machine, an elevated trough, a mandrel extending downwardly adjacent one side of said trough, means to guide a paper strip across the top of said trough beneath the level of liquid therein and down about said mandrel, a die positioned below said mandrel and through which the paper passes from the lower en-d thereof, a drainboard having an opening to receive said die and having its top face inclined downwardly therefrom, a lower open topped trough positioned to receive liquid draining from said board, a liquid supply tank, means for supplying liquid from said tank to saidelevated trough, and means for conducting liquid from said lower trough to said supply.

9. In a paper twisting machine, an elevated trou h, a mandrel extending downwardly adjacent one side of said trough means to guide a paper strip across the top of said trough beneath the level of liquid therein and down to said mandrel, a die positioned below said mandrel and through which the paper passes from the lower end thereof, a drain board having an opening to receive said die and having its top face inclined downwardly therefrom, a lower open topped trough positioned to receive liquid draining from said board, a heated liqui-d supply tank, means for supplying liquid from said tank to said elevated trough, means for conducting liquid from said lower trough to said supply, and pipes extending through said troughs and through which a heating fluid may be passed.

10. In a paper twisting machine, an elevated trough, a mandrel extending downwardly adjacent one side of said trough, means to guide a paper strip across the top of said trough beneath the level of liquid therein and down about said mandrel,l a die positioned below said mandrel and through which the paper passes from the lower end thereof, a drain board having an opening to receive said die having itsl top face inclined downwardly therefrom, a lower open topped trough positioned to receive liquid draining from said board, a liquid supply tank, means for supplying liquid from said tank to said elevated trough, means for conducting liquid from said lower trough to said supply, and means for conducting liquid from said elevatedto said lower trough.

11. In a paper twisting machine, an elevated trough, a mandrel extending downwardly adjacent one side of said trough, means to guide a paper strip across the top of said trough beneath the level of liquid therein and down about said mandrel, a die positioned below said mandrel and through which the paper passes from the lower end thereof, a drain board having an opening to receive said die having its top face inclined downwardly therefrom, a lower open topped trough positioned to receive liquid draining from said board, a heated liquid supply tank, means for supplying liquid from said tank to said elevated trough, means for conducting liquid from said lower trough to said supply, means for conducting liquid from said elevated to said lower trough and means for heating the liquid in said troughs.

In testimony whereof I have aiixed my signature.

` EARL F. BALDWIN.

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