US1379789A - Combing-machine of the nasmith type for combing cotton or other textile fibers - Google Patents

Description

J. TURNER. COMBINE MACHINE OF THE NASMITH TYPE FOR COMBING COTTON OR OTHER TEXTILE FIBERS.

7 APPLICATION FILED JAN. T9; 920. I I 1,379,789 Patented May 31,1921

F/Gd

s airs JOSEPH TURNER, o1? MANCHESTER, ENGLAND.

Specification of Letters Patent.

Patented, May 31, 1921.

Application filed January 19, 1920 Serial No. 352,490. V

present constructed the cam shaft is coupled up to the shaft upon which the needle seg ments are securely fixed and extends the whole length of the machine, the result being that the nippers which hold the cotton to the needles while combing arrive too late at the most effective position and generally allow about 6 rows of the front needles to pass before any combing action takes place; consequently the burden of the work in opening out the tangled mass of fibers held by the nippers devolves on the finer needles which suffer through not being able to withstand the strain and the machine itself loses a valuable part of its combing capabilities. This defect is well known and various inventors have accelerated the speed of the nippers in the Nasmith type of comber so as to arrive in time for the earlier or front rows of needles but as this gives rise to greater vibration of the machine it is objectionable.

In the I-Ieilmann type of comber this defect has been obviated by applying a combination of elliptical or eccentric gears or the like in order to impart a variable speed to the needle segments and my present invention consists essentially in the arrangement and application in a Nasmith type of comber of any suitable mechanism for imparting a variable speed to the needle segments for the purposes above indicated thus allowing the front or any line of needles to become effective at any desired period.

To accomplish this object in the Nasmith type of comber I separate the direct connection between the cam shaft and the shaft on which the needle segments are fixed and drive the latter at a variable angular speed, that makes one revolution for each revolution of the cam shaft, by any known mechanical system of eccentric or elliptical gears or cam or cams or the like and I drive the rollers in the drawing head .from the needle or cylinder shaft at the usual constant speed or angular velocity. 4

I illustrate an embodiment of my invention in the accompanying sheet of drawings, in which Figure 1 shows the arrangement of elliptical gears introduced between the cam shaft and the cylinder shaft and Fig. 2 shows an arrangement of gearing for counteracting commits- ACHINE or THE NASMITH TYPE FOR GOMBING oorron'oa oTriER TEX- TILE FIBERS.

the variable speed imparted to the cylinder shaft to insure that the drawing head is driven at the ordinary constant speed.

Referring first to Fig. 1, a designates the cam shaft to which is fixed the spur wheel 6 by means of the set screw as shown; this gears into a spur wheel 0 on the boss of which is fixed an elliptical wheel (Z which gears into an elliptical wheel a fixed on the cylinder shaft 7", on which is fixed the needle segments.

It will be seen that as the cam shaft a runs at a constant speed the cylinders or needle segments will run at a constantly varying speed in order to obviate the defects above indicated and which have hitherto existed in combing machines of the Nasmith type.

Referring to the device shown in Fig. 2 it will be obvious that as a variable speed is imparted to the cylinder shaft f by means of the gearing described with reference to Fig. 1 or any suitable equivalent arrangement that unless some provision be made to counteract the same the drawing head will also be driven at a variable instead of the usual constant speed. Such counteracting device is shown in Fig. 2 and is introduced in a suitable position between the cylinder shaft 7 and the shaft a driving the rollers on the drawinghead of the machine. On the cylinder shaft f'is fixed a bevel wheel 9 gearing into a bevel wheel h which is secured on the boss 2' of a spur wheel j and drives a spur wheel 76 on the boss of which is securely fixed an elliptical wheel Z. This wheel Z drives a second elliptical wheel m which is fixed by a .set screw on the cross shaft a which rotates loosely in the boss of the wheel j which is supported by a bracket 0. The other end of the cross shaft 1:. drives h? $911618 0f the drawing head in the usual manner. The stud 9 Fig. 1 and stud 9 Fig. 2 are for the compound carrier wheels and may be fixed to any suitable bracket.

lVhat I claim as my invention and desire to secure by Letters Patent of the United States is 1. In a combing machine of the Nasmith type, a cam shaft, a needle shaft separated from said cam shaft, a drawing head roller shaft, means for imparting rotary motion at a constant speed to said cam shaft, means between said cam and needle shafts for transmitting motion to the latter at Variable speed, and means between said needle shaft and drawing head roller shaft for transmitting motion to the latter at a constantspeed.

2. In a combing machine of the Nasmith type, a cam shaft, a needle shaft separated from said cam shaft, a drawing head roller shaft, means for imparting rotary motion at a constant speed to said cam shaft, a pair of elliptical gears between said cam and needle shafts for transmitting motion to the latter at variable speed, and a pair of elliptieal gears between said needle shaft and drawing head roller shaft for transmitting motion to the latter at a constant speed.

In testimony whereof I have signed my name to this specification.

' JOSEPH TURNER.

lVitness HERBERT ROWLAND A BEY.

Images