US1728448A - Reciprocating guide motions for directing yarn or other material to winding bobbins or the like - Google Patents

Description

Sept. 17, 1929. w SCHUBERT 1,728,448

- RECIPROCATING.GUIDE MOTIONS FOR DIRECTI'NG YARN OR OTHER MATERIAL TO WINDING BOBBINS OR THE LIKE Filed Jan. 1928 2 Sheets-Sheet 1 Sept. 17, 1929. w SCHUBERT 1,728,448

RECIPROCATING GUIDE MOTIONS FOR DIRECTING YARN OR OTHER MATERIAL TO WINDING BOBBINS OR THE LIKE Filed Jan. 3, 1928 2 Sheets-Sheet 2 Patented Sept. 17, 1929 UNITED STATES PATENT OFFICE FRTEDRICH WILHELM SCHUBER'I, OF APPERLEY BRIDGE, NEAR BRADFORD, ENG- LAND, ASSIGNOR TO' BRYSILKA, LIMITED, OF APPERLEY BRIDGE, NEAR BRAD- ronn, ENGLAND.

RECIPROGATING GUIDE MOTIONS FOR DIRECTING YARN OR OTHER MATERIAL TO WINDING BOBBINS OR THE LIKE Application filed January 3, 1928, Serial No.

tive length is adapted to be gradually shortened by the action of a pawl on a combined bevel and ratchet wheel rotatable on the fulcrum pin of the main lever and meshed with a bevel wheel secured to a screw as sociated with the lever-and fitted with a nut connected to the reciprocating member; the

diminish the stroke of the reciprocating member and thereby decrease the length of the layers of yarn or other material wound on to the bobbin one after the other.

According to the invention, the pawl is stationarily pivoted, and adjustably fixed to the fulcrum pin of the swinging lever is a regulator adapted during its oscillations to alternately lift said pawl and then allow it to drop into engagement with the teeth of the ratchet wheel, the amount of rotation imparted to the screw during each complete oscillation being determined by the setting of the regulator.

The employment of a stationarily pivoted pawl and an adjustable oscillatory regulator as above described, enable the latter to be adjusted to a very fine degree. without stopping the machine; whilst the motion is so light that the regulator and pawl lend themselves to lengthy service.

In order thatthe invention may be clear- 1 understood and readily carried into efect, the same will now be more fully described with reference to the accompanying drawings; in which Figure 1 is a side elevation of apparatus constructed according to the invention.

Figures 2 and 3 are front elevation and plan respectively of Figure 1.

Figure 4 is a diagrammatic view showing the principle on which the invention is based.

Referring to Figures 1, 2 and 3 of the drawings, the reciprocating member or travarrangement being such as to progressively wheel.

244,308, and in Great Britain July 15, 1927.

erse bar 1 is adapted to have motion imparted to it through the medium of a swinging lever 2 suspended vertically from and fixed to a fulcrum pin 3 and oscillated over a defined distance by a cam 4 acting through a bar 5 and pin 6, whilst in a slot in the lower part of the lever 2 is fitted a nut 7 in the form of a crosshead which iscapable of being moved by means of a screw 8 associated with the lever 2, to any position in the slot. Projections 9 on the crosshead 7 are girdled by a link 10 which is coupled to the traverse bar 1.

The screw 8 is rotated automatically by the action of a pawl 11 on a combined bevel and ratchet wheel 12 which is rotatable on the fulcrum pin 3 of the main lever 2 and is meshed with a bevel wheel 13 keyed to the top of the screw 8, whilst the lift of the screw 8 is regulated by means of a regulator 14 adjustably fixed tothe fulcrum pin 3 and which fits closely over the teeth of the ratchet wheel 12 in such a manner that the pawl 11 is allowed during each oscillation to engage the teeth of the ratchet wheel 12 and thereby impart rotary motion to the bevel wheel 13 and screw 8 thus lifting the crosshead 7 a given amount for each complete oscillation of the lever 2.

hen in operation the cam 4 is rotated and oscillates the lever 2 and screw 8 through the medium of the bar 5 and pin 6 thus imparting a reciprocating motion to the traverse bar 1 which is pivotally connected to the crosshead 7 on the end of the screw 8 and between the two parts of the slotted lever 2. Also, when the traverse bar 1 is moved in the direction of the arrow A, the combined bevel and ratchet wheel 12 is rotated anti-clockwise through the medium of the bevel wheel 13 until the regulator 14 allows the pawl 11 to drop on to the ratchet Any further oscillation of the lever 2 causes the combined bevel and ratchet wheel 12 to rotate the bevel wheel 13 and screw 8, thus raising the crosshead 7. Spring-pressed pawls 15 are pivoted on the lever 2 and therefore move with same and with the wheel 12 during its anti-clockwise movement until pawl 11 drops and engages the teeth of the wheel 12 so as to arrest its anti-clockwise rotation, whereupon the pawls 15 ride over the teeth of the wheel 12 until the end of the swing. On the return stroke (i. e. when the traverse bar 1 is moved in the direction of the arrow B) the combined bevel and ratchet wheel 12 is rotated clockwise through the medium of the bevel wheel 13 and the spring-pressed locking pawls 15 pivoted to the lever 2, and the regulator 14 lifts the pawl 11 in readiness for the next stroke.

Figure 4 shows how, by shortening the distance between the fulcrum 3 and crosshead 7 the movement of the traverse bar 1 is reduced in proportion (since the main lever 2 is always swinging through the same are) thus producing an inclined face. 15 on the yarn or like material being wound on the bobbin 16.

It follows from the above description that should the apparatus be set oscillating backwards and forwards by the cam 4 that the combined bevel and ratchet wheel 12 and the regulator 14 will rotate'througlrthe certain but constant distance. If the regulator 14 is so adjusted that it unguards, say, two teeth in its swing, then the pawl 11 will cause rotation of the ratchet wheel 12 relative to the lever 2, adistance equal to two teeth.

This movement is transmitted through the gears to the screw 8 which in turn causes.

the crosshead 7 to move a short distance, the screw 8 of course beingv cut in such a manner that a shortening of the centres takes place. I

The benefits of so building up the material are that in subsequent operations the layers of material are not so liable to be pushed over one another so matting the material, neither do individual fibres get burst away from the thread, which if this happens, creates bad winding off of the yarn in later processes.

At the end of the time for doiiing the fully wound bobbins 16, the screw 8 is turned back to its longest stroke by means of a handle 17 situated on the wheel 13.

By pressing the trigger 18 the pawls 15 are held out of engagement so facilitating the winding back ofthe screw 8 by the operative.

I claim 1. In a mechanism for the purpose described, the combination of a reciprocating traverse bar, a lever having a cross-head adjustable lengthwise thereof and connected to said bar, a screw for moving the cross-head longitudinally of the lever, gearing connected to the screw and oscillating with the lever, a stationary pawl adapted to engage the gearing at each oscillation of the lever, a cam for oscillating the lever, anda regulator adjustably mounted at the axis of the lever and cooperating with the pawl for determining the period of engagement between the pawl and gearing.

2. In a mechanism for the purpose described, the combination of a swinging lever depending from a relatively fixed fulcrum, means for oscillating said lever, a screw extending longitudinally of the lever, a crosshead on the lever engaged with said screw, a reciprocat'ory bar connected to the crosshe'ad, a gear secured to the upper end of the screw, a second gear mounted to turn about the axis of the lever and engaging the gear on the screw, a ratchet connected with the second said gear, a stationary pawl adapted to engage the ratchet and move the same during a portion of each oscillation of the lever, and adjustable means for varying the length of time that the pawl will thus engage the ratchet.

In a mechanism for the purpose described. the combination of a swinging lever depending from a relatively fixed fulcrum, 111021118101 oscillating said lever, a screw ex-. tending longitudinally of the lever, a crosshead on the lever engaged with said screw, a reciprocatory bar connected to the crosshead, a gear secured to the upper end of the screw, a second gear mounted to turn about the axis of the lever and engaging the gear on the screw, a ratchet connected with the second said gear, a stationary pawl adapted to engage the ratchet and move the same during a portion of each oscillation of the lever, a manually adjustable pawl carried by the lever and engaging the ratchet to normally prevent rotation in a direction oppositetothat in which it is turned by cooperation with the stationary. pawl, and means for varying the length of time to that in which it is turned cooperation with the stationary pawl, and means for varying the length of time that the stationary pawl will be in operative engagement with the ratchet.

' F. W. SCHUBERT.

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