US2815538A

US2815538A - Drawing frame for a spinning machine

Info

Publication number: US2815538A
Application number: US517626A
Authority: US
Inventors: Schussler Alfred; Schafer Erwin
Original assignee: Spinnerei Karl Marx VEB
Current assignee: Spinnerei Karl Marx VEB
Priority date: 1955-06-23
Filing date: 1955-06-23
Publication date: 1957-12-10
Anticipated expiration: 1974-12-10

Description

Dec. 10, 1957 A. scHUssLER ETAL 2,815,538

DRAWING FRAME FOR A SPINNING MACHINE '2 Sheets-Sheet 1 Filed June 25, 1955 we //0 m9 Tlql. /2 47 /02 INVENTORS A74- E IPED SCHUSSLEP w//v Sewn/=57? Dec. 10, 1957 A. SCHUSSLER ETAL 2,815,538

DRAWING FRAME FOR A SPINNING MACHINE Filed June 23, 1955 '2 Sheets-Sheet 2 INVENTORS 194F250 SCHUSSL ER 'Rw/ v SCH/9E5)? front end of the bar 28.

U it d S te Page? nereimaschinenhau .Karl-Marx-Stndt, Karl-Marx-Stadt, Germany Application June 23, 1955, Serial N 517,626 16 Claims. (11. 19-135 This invention relates to spinning machines, and'more particularly to a drawing frame tor spinning machines, especially fly frames, wherein the top rollers are subjected to a variable load.

An object of the invention is to provide a drawing frame, wherein the required pressure on the top rollers may be obtained by means of a comparatively light weighting means.

Another object of the invention is to improve on the construction of drawing frames, as now customarily made.

Other objects and structural details of the invention will be apparent from the following description when read in conjunction with the accompanying drawings, forming part of this specification, wherein:

Fig. 1 is a verticalsectional view of a drawing frame according to the invention,

Fig. 2 is a vertical sectional view of another embodiment of a drawing frame according to the invention, and

Fig. 3 is a vertical sectional view of still another embodiment of a drawing frame according. to the invention.

Referring now to Fig. 1, 9 generally indicates an arm or support swingably mounted on a rod .1 extending hehind the drawing frame perpendicular to the direction A of drawing in the drawing frame. A double-armed lever 2 swing'ably mounted on said arm 9 .ar25 serves as holder of the top rollers 50, 51, 52. The pivotal connection 25 between said lever -2 and the -9 is above said top rollers 50, 51, 52.

The forwardly projecting arm 54 of said double-armed lever or holder 2 is pivoted at 26 to a carrier carrying the top rollers 50, 51, 52. -A bar 28 passing through an aperture of the carrier 27 is adjusta-bly mounted on the latter. A saddle 29 is secured to the The top roller 50 of the pair of delivery rollers 50, 56 is journ'alled in said saddle 29. A member 30 is secured to the rear end of the bar 28. Another bar 31, carrying the

saddles

32, 33, is adjustably mounted on said member 30. The top rollers 51 and 52 are journalled in said

saddles

32 and 33 respectively.

The rearwardly extending arm 58 of the double-armed lever 2 is pivoted at 35 to the lower end of a link 34, the upper end of which is pivoted at 36 to the rear-end of a weight lever 11 swing'ably mounted on the arm 9 at at a point intermediate its ends. A weight 12 is shifta'bly and adjustably mounted on the forwardly extending arm of the weight lever 11.

Thus, as will be readily understood from above, the pivotal connection 25 between the holderLZ and the arm 9 is located between the pivotal connection 26 of the holder 2 with the carrier .27 and the pivotal connection 35 of said holder 2 with the link 34. In like manner, the pivotal connection 10 of the weight -lever 11 located between the weight H and the pivotal connection 36 of the link 34 with the'zrear end of. said weightlever 11. Thus, by selecting suitable lengths of the arms 2,815,538 Patented Dec. 10, 195? of levers, a very considerable ratio of load between the load of the weight 12 acting on the weight lever 11 and the load acting on the top rollers 50, 51, '52 .may be obtained. In other words, the required pressure on the top rollers 50, 51, 52 may be obtained by means of a comparatively light weight 12.

The top rollers 50, 51, 52 may be removed from the

bottom rollers

56, 60, 61 by swinging the arm .9 upwardly around the rod 1. The arm 9 may be held in its active end position as shown by a locking device 37 mounted on said arm.

The embodiment of the invention, as shown in Fig. 2, substantially corresponds to the one as hereinbefore described in conjunction with Fig. 1. However, accordiug to Fig. 2, the pivotal connection 126 between the top roller carrier 127 and the holder 102 is located between the pivotal connections and of the holder 102 with the support or arm 109 and the link 1 34 respectively. Likewise, the pivotal connection 136 between the link 134 and the weight lever 111 is located between the weight 112 and the pivotal connection 110 between the weight lever 111 and the arm 109. Furthermore, in contrast to the previously described embodiment, the bar 128 is equipped at each of its ends with a

carrier

138 and 139 respectively, each of said car- :iiers carrying two

top rollers

150, 149 and 151, 152 respectively.

Again the arm 109 swin gably mounted on the rod 101 may he held in its active end position as shown by the locking device 137.

A third embodiment of the invention shown in Fig. 3 is somewhat similar to the embodiment shown in Fig. 2.

According to Fig. 3, the holder 202 is again swinga'bly mounted on the support or arm 209 at 225. The free rear end of the holder 202 is "of the weight lever 211, which is pivotally mounted on the arm 209 at 21-0. Said weight lever 211 has a nose 243 being in abutting engagement with the holder 202 at 235. The top roller carrier 227 is pivoted to the holder 202 at 226, between the point 235 of engagement of the-weight lever 211 with the holder 202 and the pivotal connection 225 of the holder '202 with the arm 209. The holder 202 is provided with a joint 240 located in front of the pivot 226. Furthermore, the holder 202 is provided with a forwardly extending arm 241, which projects beyond the pivot 225. A biasing means or compression spring 242 engaged with said extension 241 acts in the direction of the load. Said spring 242 arranged below the extension 241 may be adjusted by means of a screw 245.

Extension arm 241 is preferably still further extended beyond the spring 242, forming at this point a handle 244. By this arrangement the

top rollers

250, 251, 252 may be easily lifted manually. To that purpose, handle 244 is swung in the direction of the arrow B.

The main purpose of the spring 242 is the dampening of the movements of the weight lever 211.

Furthermore, however, said spring 242 also acts as a weighting means. This may be accomplished in that spring 242 supplements the load of weight lever 211. In such an arrangement the force of the spring and the weight of the load may be balanced with respect to each other. Then, the free end of the holder 202 is urged upwardly under the influence of the spring 242 about the pivot 226 of the top roller carrier 227. This rocking movement of the rear end of the holder 202 about the pivot .226 will be counteracted by the weight lever 211. A certain predetermined position of the weight lever 1211 may be obtained by a corresponding adjustthem of the spring 242. If in a spinning machine or-afly frame the weight levers 211 of all drawing frames are under the influence spaced 3 set in the same position, the weight levers 211 may also serve as indicators of disturbances, which may be readily discovered as soon as one or more weight levers are no longer in alignment with the others.

According to the embodiments shown in Figs. 1 and 2, the operative connection between the holder 2 or 102 respectively with the weight lever 11 or 111 respectively is obtained by means of a

link

34 or 134 respectively. According to the embodiment shown in Fig. 3, said operative connection is obtained by simply arranging on the weight lever 211 a nose for abutting engagement with the free end of the holder 202.

According to Figs. 1 and 2, the weight lever 11 or 111 respectively is provided with a separate weight 12 or 112 respectively, which, preferably, is slidably and adjustably mounted on said weight lever. According to Fig. 3, however, a separate weight is omitted and the weight lever 211 itself has the Weight of the required load.

We have described preferred embodiments of our invention, but it is understood that this disclosure is for the purpose of illustration, and that various omissions and changes in shape, proportion and arrangement of parts, as well as the substitution of equivalent elements for the arrangements shown and described may be made without departing from the spirit and scope of the invention as set forth in the appended claims.

What we claim is:

1. In a drawing frame for a spinning machine, the combination of: a series of rotatable bottom rollers, a series of rotatable top rollers in cooperative relationship to said series of bottom rollers, a support including a portion extending above said series of top rollers, a weight lever pivoted to said support, a holding lever pivoted to said support at a point spaced from the pivotal connection between said weight lever and said support,

carrying means pivoted to said holding lever at a point spaced from the pivotal connection between said holding lever and said support, said carrying means being operatively engaged with said series of top rollers for holding same in place for cooperation with said series of bottom rollers, said weight lever and said holding lever being arranged at the same side of said top rollers above the plane of the latter, and controlling means on said weight lever for an operative connection between the latter and the rear end of said holding lever, said pivotal connection between the weight lever and the support being spaced from said controlling means.

2. In a drawing frame as claimed in claim 1, a weight adjustably mounted on said weight lever.

3. In a drawing frame as claimed in claim 1, said controlling means including a link pivoted to said weight lever and to the rear end ofsaid holding lever, the pivotal connection between said weight lever and said support being spaced from the pivotal connection between said weight lever and said link.

4. In a drawing frame as claimed in claim 1, said controlling means including a link pivoted to said weight lever and to the rear end of said holding lever, the pivotal connection between said weight lever and said support being spaced from the pivotal connection between said weight lever and said link, the pivotal connection between .the holding lever and the support being located between ,the pivotal connections of said holding lever with said carrying means and with said link, and the pivotal connection between said weight lever and said support being located between the weighting portion of said weight lever and the pivotal connection of said weight lever :With said link.

5. In a drawing frame'as claimed in claim 1, a weight :adjustably mounted on said weight lever, said controlling means including a link pivoted to said weight lever and to the rear end of said holding lever, the pivotal connection between said weight lever and said support being from the pivotal connection between said 'weight lever and said link, the pivotal connection between the holding lever and the support being located between the pivotal connections of said holding lever with said carrying means and with said link, and the pivotal connection between said weight lever and said support being located between said weight and the pivotal connection of said weight lever with said link.

6. In a drawing frame as claimed in claim 1, said controlling means including a link pivoted to said weight lever and to the rear end of said holding lever, the pivotal connection between said weight lever and said support being spaced from the pivotal connection between said weight lever and said link, the pivotal connection between said carrying means and said holding lever being located between the pivotal connections of said holding lever with said support and with said link, and the pivotal connections between said link and said weight lever being. located between the weighting portion of said weight lever and the pivotal connection of said weight lever with said support.

7. In a drawing frame as claimed in claim 1, a weight adjustably mounted on said weight lever, said controlling means including a link pivoted to said weight lever and to the rear end of said holding lever, the pivotal connection between said Weight lever and said support being spaced from the pivotal connection between said weight lever and said link, the pivotal connection between said carrying means and said holding lever being located between the pivotal connections of said holding lever with said support and with said link, and the pivotal connection between said link and said weight lever being located between said weight and the pivotal connection of said weight lever with said support.

8. In a drawing frame as claimed in claim 1, biasing means engaged with said holding lever for subjecting same to an additional load.

9. In a drawing frame as claimed in claim 1, a spring engaged with said holding lever for subjecting same to an additional load.

10. In a drawing frame as claimed in claim 1, said controlling means including cooperating abutting means arranged on said weight lever and the rear end of said holding lever.

from the pivotal connection between said weight lever and said support, carrying means pivoted to said rear arm of the holding means, said carrying means being operatively engaged with said series of top rollers for holding the same in place for cooperation with said series of bottom rollers, said weight lever and said holding means being arranged at the same side of said top rollers above the plane of the latter, controlling means on said weight lever for an operative connection between the latter and the rear end of the rear arm of the holding means, said pivotal connection between the weight lever and the support being to the rear of said controlling means, and biasing means engaged with said front arm of the holding means for urging the joint between said front arm and said rear arm in downward direction.

12. In a drawing frame as claimed in claim 11, said front arm including an extension projecting forwardly beyond its pivotal connection with the support, and said biasing means including a compression engaged with the 5 6 beyond its pivotal connection with the support, and said weight lever for abutting engagement with the rear arm extension forming a handle. of the holding means.

15. In a drawing frame as claimed in claim 11, said controlling means including cooperating abutting means Regal-911C13 (Cited in the file of this patent arran ed on aid Wei ht lever and said rear arm of the holding mean s. g FOREIGN PATENTS 16. In a drawing frame as claimed in claim 11, said 178,221 Great Britain Apr. 20, 1922 controlling means including a nose arranged on the