US1618033A

US1618033A - Method and apparatus for braiding reenforced cords

Info

Publication number: US1618033A
Application number: US712168A
Authority: US
Inventors: Williams John Dale
Original assignee: STROMBERG CARLSON TELEPHONE
Current assignee: STROMBERG CARLSON TELEPHONE; STROMBERGCARLSON TELEPHONE MANUFACTURING Co
Priority date: 1924-05-09
Filing date: 1924-05-09
Publication date: 1927-02-15
Anticipated expiration: 1944-02-15

Description

- 1 618,033 1927' J. b. WILLIAMS METHOD AND APPARATUS FOR BRAIDING" REENFORCED corms Filed May 9. 1924 2 Sheets-Sheet" '1' INVENTOR JOHN PALE WlLLl/XMS BYA' ATTORNEY- 1618,033 Feb. 15,1927. J D. WLUAMS METHOD-AND APPARATUS-FOR BRAIDING nsgwoncnn corms Filed May 9. 1924 2 Sheetg-Sheet 2 INV ENTOR JOHN PAl E WILLIAMS YBYXQWW ATTORNEY an adjustable 'worm gear 24 which engages a worm wheel 25, adjustably mounted on the shaft 15. The other end of the shaft carries a change gear 26, which meshes with a second change gear 27. The change gear 27 is mounted on the shaft 28 at the extreme left end of which there is secured a beveled gear 29.. This beveled gear drives the pair of beveled gears 30, which are rotatable on the shaft 31. Well known reversing mechanism 32 ismovable longitudinally on the shaft 31 by means of the handle 33, but is prevented .from rotation on the shaft by a feather 34 also partially shown in dotted lines. ries one of the knurled pulleys 19 and at its other end carries a spur gear 35. The other 'knurled pulley 19 is carried by a shaft 36 which is mounted for a limited lateral move ment by reason of its mounting on the pivot 37 secured to a portion of the frame and because of the spring 60. The shaft 36 is driven by a spur gear 38, which meshes with the spur gear 35.. The shaft 31 also carries a sprocket wheel 38, which actuates a chain 39 for driving the lower pair of belts 23 of the lower take-up device. This lower take-up device has been previously described as consisting of the pairs of pulleys 21 and 22 which carry the grooved belts 23 and which are driven from the chain 39 as u ill now be described.

The pulley 22 is secured to a shaft 41' a spur gear 42 which engages with a similar spur gear (not shown), but which is carried on the shaft 62. A bracket 43 supported on the lower portion of the frame,

carries'a thread guiding ring '44, which is positioned within the opening between the pairs of pulleys 19 and 21.

The method of braiding cords on the improved braiding machine is substantially as follows: On starting the braiding machine, after it is initially threaded, the operator .gathers the threads 45 which are to form the braid and holds them until a short holoperation and the take-up device including the pair of belts 20, elevates the cord during the time that the reenforced portion 48 of The shaft 31 at one of its ends car-" the covering is being applied. The mentioned short tube is then trimmed off. \Vhen the reenforced covering has been braided on the cord to the point designated 49, the Operator stops the [machine and pulls the cord 12 downward to eliminate the slack in the threads, starts the machine with its takeup devices operating in the reverse 'dirmrtion and continues'to pull down on the cord until its lower end can be engaged between the grooved belts 23. The cord continues its downward movement through the braiding machine until it is all covered, at which time the conductors 50 are pulled through the threads and the hollow braid that is then produced, serves as a'stay-cord.

short length of the hollow braid is then cut oil. from the cord and serves as a means for holding the threads 45 together, while an other cord is being positionedinthe braiding machine. It will be understood, although it has not been so described, that while the cord 12 is being elevated the lower pair of bolts 23 may cooperate with the upper pair of belts, and while the cord is being pulled downward, the upper pair of belts 20 may engage the cord to serve as a guide. I

Instead of using pairsv of

grooved belts

20 and 23 to grip. and pull the cord, the

pairs of

pulleys

18, 19, 21 and 22 may be replaced by grooved resilient rubber rolls to pull the cord, in which case the pairs of

belts

20 and 23 are of narrow width to engage only a portion of the surface of the rolls at one side of the grooves to drivethem. In such an arrangement the

pairsof rolls

18 and 19 are placed near each other, and the pairs of rolls 21. and 22 are located close enough together so that the cord will be fed between them.

Theinvention herein disclosed is not limited to the present embodiments, but contemplates any means for moving a switchboard cord longitudinally in one direction Ill) and then'in the opposite direction, while a covering of braid is being applied.

\Vhat I claim is: p

1'. In a mechanism of-the character described, the combination with a braiding machine for braiding threads around a shortlength cord, of a thread guide, and takeup devices for said cord at opposite sides of thread guide, said take-up devices being relatively close to said thread guide.

2. In a mechanism of the character described, the combination with a cord braid ing machine, of a take-up device for moving a cord through said braiding machine while a covering is braided on said cord, a source of power, a single reversing means between said source of power and;said take-up device for'rever'sing-the direction of operation of said take-up device.

3. In a device of the character described,

opening, and means for driving said takeup devlce.

4. In a device of the eharacterdescribed,

a base having an opening about which a' track extends, spool carriers, means for driving at least a portion of said spool carriers on said track, a take-up device extending through said opening, means for driving said take-up device, and means for reversing the direction of operation of said take-up device. f v

5. In a device of the character described, a base having an opening about which a track extends, spool carriers, means for driving at least a portion of said spool carriers on said track, a take-up device extending through said opening, means for driving said take-up device, a second take-up device adjacent to and cooperating with said first mentioned take-up device, and means for driving said second take-up device.

6. In a device of the character described, a base having an opening about which a. track extends, spools of-thread for braiding a covering on cords, means for driving at least a portion of said spools on said track, a

take-up device extending through said opening, a second take-up device, means for driving said take-up devices, and means for reversing said driving means.

7. The method of applying a reenforced braided covering to a short-length cord, which consists in moving said cord in one direction while a ree'nforcing covering is being braided thereon, and then moving said cord at a uniform speed in the opposite direction while the remainder of the covering is being braided on substantially the Whole length of the cord.

9. In a mechanism of the character described, the combination. with a braiding machine for braiding a covering on a shortlength telephone cord, of a pair of grooved take-up members for moving said. cord through said braidin machine, and means for moving said mem ers, first inone direc-' tion to braid .a reenforcing covering on'a portion of said cord and then in the oppos te direction, to braid a covering on said cord,

extending substantially from one end to the other by said second movement. v

- 10. In a mechanism of the character described, the combination with a braiding machine for braiding threads around a' shortlength telephone cord, of a thread guide, and

a take-up device near to said thread guide, said take-up device including a pair of gripping members in rotaryengagement for moving said cord first in one direction while a reenforcing covering is braided from an intermediate point on said cord to one end thereof and then in the opposite direction through said thread guide while an outer covering is being applied to said cord.

, 11. The method of applying a reenforced braided covering to a short-length cord,

which consists in, pulling the cord in one direction with a uniform movement while a short reenforcing covering is being braided thereon, and then pulling the cord with a uniform movement in the opposite direction While the braid is being braided thereon over substantially the entire length of the cord and over said reenforcing covering.

12. The method of applying a reenforced braided covering to a short-length telephone cord, which consists in pushin and pulling said cord in one direction whi e a reenforcing portion of the braid is being applied thereto, and then pushing and pullin the cord in the opposite direction to app y an outer covering of braid thereto from sub stantially one end to'the other over said reenforced portion. I

13. The method of applying a reenforce braided covering to a short-length telephone cord, which consists in moving said cord in one direction while a short reenforced covmoving said cord in the opposite direction while the remainder of this covering is being applied thereon, at least one of said mentioned movements being as a result of pushing said cor-d. x

14. The method of applying a reenforcinq braided covering to a short-length cor which consists in holding the threads to form a hollow braided tube, insertin the cord between certain of the threads'with the hollow braided tube adjacent an intermediate point on said cord, moving the cord in one direction, while braid is applied to said cord from said intermediate point to one end thereof,-trimming off said hollow tube during this mentioned movement, and then moving the cord in. the opposite direction,

while a braided covering is applied substan} tially from one end of the cord to the other.

15.'The method of applying a reenforced I braided covering to. a short-length cord, 1

which consists in inserting the cord between certain of the braid threads, which are held together by a hollow tube of braid formed as a surplus when the stay-cord of the previ! ous cord was braided, moving the cord in one direction, while braid is applied to said cord. from an intermediate point to one end 1 threads to form a hollow stay-cord, and cutthereof, trimmin 0E said hollow tube durting the stay-cord at an intermediate point ing this last mentioned movement, then movso. that the threads are held together by a 10 ing the cord in the opposite direction, while 1 hollow tube of braid. 5 a braided covering is being applied substan- In witness whereof, I hereunto subscribe I tially from one end of the cord to the other, my name this 6th day of May, A. D. 1924. pulling out the conductors through the JOHN DALE WILLIAMS.