US1402369A

US1402369A - Combing machine

Info

Publication number: US1402369A
Application number: US112917A
Authority: US
Inventors: Nasmith John William
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-08-03
Filing date: 1916-08-03
Publication date: 1922-01-03
Anticipated expiration: 1939-01-03

Description

J. W. NASMITH.

COMBING MACHINE.

APPLICATION FILED AUG.3, 1916.

1,402,369. I Patehted Jan. 3, 1922,

A 1'' Fun MW Q L} JOHN WILLIAM NASIVIITH, F EEAI'ON IJLERSEY, ENGLAIVD.

contents MACHINE.

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Specification of Letters Eatent.

Patented J an. 3, 1922.

Application filed August '3, 1916. Serial No. 112,917.

(GRANTED UNDER THE PROVISISHS OF THE .ACT 0]? MARCH 3, 1.921, 41 STAT. L, 1313.).

' I have filed application in England, July 20, 1915, Patent 10,502, sealed March 7, 19127,) of which the following is aspecification.

This invention relates to improvements in combingmachines of the-Heilmann type and more particularly-to the feeding mechanism,

such as that illustrated in British Patent 3871 of 1914. p In machines of this type it has beenused to employ aratchet wheel fixed upon the end .of-the feed roller, and operated onby a pawl or rack to produce the necessary rotation. This has been done in .one of two ways.

In one form a rack is caused to engage and disengage with the :feed roller ratchet. Whilst engaged the rack is givenan inclependent movement from an extraneous source to cause the rotation and when disengaged, is drawn back to its initial position, ready for the next stroke.

In another form a lever, rocking-loosely upon the end of the feed roller itself, has pivoted on it, a paWl engaging with the ratchet, some point on the lever being held stationary in relation to the bodily to and fro motion of the feed roller, so that when the feed roller is moved bodily in one direction in relation to such fixed point, the pawl engages with and turns the ratchet and when moved in the other direction the pawl rides.

over the teeth of the ratchet until motion in the opposite direction recommences. In

' all such arrangements the rotary motion of the feed roller commences immediately the roller moves in relation to the fixed point.

The object of my invention is to so arrange the parts, that a certain common bodily movement of the feed roller and its ratchet may take place without producing any rotary motion of the roller and to provide means to vary easily the extent of that common motion and consequently of the extent of the rotary motion and thus regulate at will the amount of material fed each stroke. According to this invention the usual ratchet wheel on the end of the feed roller is actuated by-means of a pawl 01- toothcd segment or rack so mounted that it canaccompany the ratchet duringits reciprocations, due to the bodily movement of the feed roller, through a variable portion of such movements; during the backward movement of the feed roller, the ratchet and pawl first move together in engagement without .I'Qiativc movement and afterwards the pawl stops and rides over the ratchet, which continues to move bodily backward; during the forward movement of the feed roller the pawl and ratchet first movetogether a distance equal to their previous simultaneous movement backward, andthen thepawl'stops and remaining in engagement with the ratchet rotates the latter, and consequently the feed roller.

Ina :preferredconstruction according to this inventionthe pawlris mounted uponia rocking lever provided with means for :restricting its amplitude of movement :and with-means that cause the pawl to tend .to move in the direction of the backward movement of the feedroller; by varyingthe amplitude of the levers movement-for *ex ample, by set screws adapted to .come into contact with the frame or other fixedpart of the machine-tl1elength of the simultaneousmovement of the pawl and'ratchet can be varied; and by causing the pawl.by..-a weight on the lever, or equivalent meansto tend to move back with the feed roller, it is ensured that the ineffective simultaneous movements in each direction re equal.

The accompanying drawing shows in side elevation one construction of combing machine feed-roller actuating mechanism according to this invention.

K is a portion of the frame of the machine and N is a fixed pivot upon which the frame of the nipper is pivoted. In the drawings only the lower jaw p is shown, the nipper frame being omitted. F is the feed roller on the end of which is a ratchet f; and f is a rocking lever pivoted freely upon N and having pivoted at its lower end a pawl 01' toothed rack f provided with teeth adapted to engage with those of the ratchet f, for which purpose they are on an arc struck from the centre of the pivot N so that as the nipper swings forward upon the said pivot-carrying the feed roller with it-the teeth of the pawl f will always be adapted to engage with those ol' the ratchet wheel The lever j is provided with set screws and f adapted to come. into contact with the frame K and thus to l nit the amplitude of the levers movement. A weight f" tends to cause the said lever to rock in a count rclockwise direction.

The operation is as follows: W hen the nipper is at the end of its forward stroke the parts are in the position shown in the figure the centre or the feed roller lying upon the radial line :0 the lever f" being held with its stud f against the frame K owing to the engagement of the pawl and ratrhet f', f. As the nipper and feed roller F move backward the pawl f and lever f (under the influence of the weight 7") follow until the stud 7' comes against the frame; this stops the simultaneous movement of the lever and pawl and through the remainder of the backward movement of the nipper, the pawl f rides over the teeth of the ratchet until the centre of the feed roller lies on the radial line 00. The nipper then commences its forward swing, carrying with it the feed roller the ratchet f of which is in engagement with the pawl: during the early portion of the forward movement of the nipper and feed roller the lever f is rocked about the pivot N until the stud f comes into contact with the frame; after such contact the lever j" and its pawl f are held stationary and the contin ued bodily movement of the teed roller causes the latter to receive a rotary movement. The amount of the said rotary movement can be varied by adjusting the studs f f, thus Varying the amount of bodily forward movement of the feed roller (with the nipper) during which rotary motion is not imparted by the pawl 7' to the roller and consequently varying the amount of rotation of the feed roller and the amount of material fed forward every stroke.

Claims.

1. As an improvement in combing machines, a pawl provided with rack teeth, means for movably supporting said pawl, a feed roll movable relative to said pawl, a ratchet wheel attached to said feed roll and engaging said rack teeth, and means for limiting movement of said pawl.

52. As an improvement in combing machines, a pivotally supported lever, a pawl provided with rack teeth, means for movably supporting said pawl, a feed roll movable relative to said pawl, a ratchet wheel attached to said feed roll and engaging said rack teeth, and means tor limiting pivotal mov ment of said lever.

As an improvement in combing ma.- chines, a pivotally supported lever, a pawl provided with rack teeth, means for movably supporting said pawl, a feed roll movable relative to said pawl, a ratchet wheel attached to said feed roll and engaging said rack teeth, adjustable abutments for limiting pivotal movement of said lever, and a counterweight carried by said lever.

at. As an improvement in combing machines, a pivotally supported lever a pawl pivoted to the lever and provided with rack teeth, means for movably supporting said pawl, a feed roll movable relative to said pawl, a ratchet wheel attached to said teed roll and engaging said rack teeth, and

means for limiting movement of said pawl.

In testimony whereof I have affixed my signature, in presence of two witnesses.

JOHN WVILLIAM NASMITH.

Witnesses:

EnNoLn SIMPSON MosELnY, GEORGE lVnAVnR.