US2111925A

US2111925A - Machine for drawing flax, wool, and other fibers for forming slivers or yarn

Info

Publication number: US2111925A
Application number: US55761A
Authority: US
Inventors: Eves Harold Trevor
Original assignee: J & T M Greeves Ltd
Current assignee: J & T M Greeves Ltd
Priority date: 1935-01-22
Filing date: 1935-12-23
Publication date: 1938-03-22
Anticipated expiration: 1955-03-22

Description

H.. T. EVES WING F March 22, 1938.

MACHINE FOR DRA LAX, vWOOL, AND OTHER FIBERS FOR FORMING SLIVERS QR YARN c. 23, 1955 '3 Sheets-Sheet 1 Filed De S5 R mw Wm 5 VM 2 EL G m C T M e R mmm A R RH D N March 22, 1938.

, AND OTHER OR YARN 3 Sheets-Sheet 2 MACHINE FOR FIBERS March 22, 1938. H. T. E 2,111,925

MACHINE FOR DRAWING F X, 0L AND OTHER 1 FIBERS FOR FORMING SLIVERS OR YARN Filed Dec. 23, 1935 3 Sheets-Sheet 3 INVENTOR Q7: {54%.

Patented Mar. 22, 1938 NITED STATES 2,111,925 MACHINE FOR DRAWING FLAX, WOOL, AND

OTHER FIBERS FOR OR YARN FORIVHNG SLIVERS Harold Trevor Eves, Belfast, Northern Ireland,

assignor to J.

& T. M. Greeves Limited, Belfast, Northern Ireland Application December 23, 1935, Serial No.'55,761

In Great Britain 6 Claims.

The invention relates to gill frames for drawing flax, wool and other long staple fibers for forming slivers or yarn in which the gill bars are pushed forward along a controlled path as distinct from faller bars carried forward by screws.

The object of the invention is to provide means by which the path of the push bars and the angle of the gill pins thereon relative to the plane of travel of the fibers may be so controlled that as the bars rise at the back and descend at the front, the rising pins enter the sliver approximately vertically or at right angles to the plane of the fibers and very close to the back roller and the descending pins leave the sliver approximately vertically or at right angles'to the plane of the sliver and approach very close to the nip of the front rollers before dropping clear of the sliver and during the forward traverse of the bars the distancebetween consecutive rows of pins, measured on the sliver line, is maintained constant or nearly so.

According to the invention the gill bars are each constructed with journals to traverse a fixed path from back to front of the machine and with two cranks having crank pins set at an angle relative to one another to traverse fixed cam paths to control the relative angle of the gill pins at difierent positions in the traverse of the gill bars.

The invention further comprises the setting of the gill pins in the gill bars upon the front or leading edge of the bar approximately tangential to the bar.

The invention will be fully described with reference to the accompanying drawings:--

Fig. 1 is a longitudinal section of machine showing one arrangement of push bars and position of pins.

Fig. 2 is a front elevation of same. 7

Fig. 3 is a side elevation of path A which carries and guides the push bars.

Fig. l is a side elevation of path B-which controls the crank which is in operation from the time the pins enter the sliver and travel along the reach until they are ready to descend.

Fig. 5- is a side elevation of path C which controls the crank which is in operation from when the bars start to descend at the nip and'until they enter the driving wheel.

Fig. 5a is a side elevation of the paths A, B and C assembled.

Fig. 6 is a plan of four push bars in place in wheel.

Fig. '7 is a detail of modification of'push bar January 22, 1935 showing narrow collar which prevents end-wise travel of the push bar.

Fig. 8 is an end view of cranks shown in Figs. 2 and 6.

Fig. 9 is a side elevation of alternative shape of path A.

Fig. 10 is a side elevation of plate to support sliver in the nip, also guard or apron.

Fig. 10a is a front elevation of Fig. 10.

Fig. 10b is a plan of Fig. 10a.

Fig. 11 is showing various positions of gill pins in relation to the cross section bar.

Fig. 12 shows four methods of fixing gill pins to the push bar.

Fig. 12a is a plan of Fig. 12.

Fig. 13 is a plan of bars with a single crank at each end of push bar. 7

Fig. 13a is an end elevation of Fig. 13.

Fig. 14 is a plan of bars with at one end of each push bar.

Fig. 14a is an end elevation of Fig. 14.

Fig. 14b is a perspective view of double crank Fig-14.

Fig. 15 is an end elevation showing projections to keep bars spaced wider apart.

Fig. 15a is a plan of one of the bars shown in Fig. 15. The gill bars A are each constructed with a journal 11 at each end to traverse a fixed path A carried by the frame or carriage plate E of the machine extending between the back roller F and the front roller G and leading with an incline down which the bars slide to a driving sprocket wheel W below the back roller F by which the bars A are raised and propelled one bar pushing the adjacent one forward. A collar a on the bar fits between the teeth of the wheel W. There are two driving wheels W one at each side of the machine which engage and lift alternate bars.

The path A is preferably a casting secured to the frame by bolts at with a removable gate or block a to admit the ends of the gill bars A The collar 11 also serves to prevent end-wise movement of the gill bar.

The fixed path A for the gill bars A may be varied from that shown in Fig. 3 to give a convex curvature to the straight portion of the reach and a similar curve to the return slope leading to the driving wheel W. This reduces the sharpness of the curve during the descent of the bars as shown in Fig. 9.

Each gill bar A is also constructed with or fitted with two cranks B C set at an inclination to one another with crank pins a double crank b and 0 carried" by the cranks B and C respectively. The crank pins 1) and 0 while parallel to each other are disposed in different though parallel planes and operate in cam paths in different vertical planes. The crank B is set at an angle of about from the line of the gill pin H and the crank C at an angle of about 45 from the line of the same gill pin H and the crank B (see Fig. 13a) or parallel with the same gill pin H and at an angle of about 90 from the crank B (see Figs. 8, 14a and 14b).

The crank webs b 0 need not be at right angles to each other as in an ordinary crank thereby enabling the eccentricity of the crankpins b and c to be much greater than if right angle crank webs were used, the inclined cranks nesting into each other.

The two cranks B C are preferably constructed or forged at one end of .the gill bar A the crank C being carried by and extending beyond the crank pin b of the crank B as shown in Figs. 2, 6, 8, and 141). Or the crank B1 may be forged at one end of the gill bar A and the crank C at the other end as shown in Figs. 13 and 13a.

Two fixed cam paths or grooves B and C are aflixed to the frame or carriage plate E of the machine spaced apart in parallel planes. The pin b of the crank B traverses the cam path B and the pin 0 of the crank C traverses the cam path C.

The crank B enters the path or groove B as the bar is raised by the wheel W and continues therein as the bar A traverses to the front roller G and causes the pins H to assume a vertical position and maintain a constant distance between the row of pins H of adjacent bars A measured on the sliver line.

The crank C transverses a fixed cam path or groove C afiixed to the frame or carriage plate E of the machine. The crank C enters the path or groove 0 as the bar approaches the front roller G and begins to descend and as the crank B leaves the cam path B the crank C as it moves down the cam path C maintains the descending pins H approximately vertical and at right angles to the plane of the sliver and causes them to approach very close to the nip of the front roller G thereby reducing the distance or space between the nip of the rollers and the point where the descending pins I-I leave the sliver. The crank C also controls the position or angle of the pins H as the bars A descend the inclined part of the path A towards the driving sprocket wheel W.

The crank B and the cam path B cause the pins H to assume on their forward traverse a position leaning slightly backward in the reach. This is useful for some types of sliver to prevent it rising. The cam path B may however be disposed relatively to the fixed path A of the bars A that the pins H may travel forward at any desired angle to the line of the sliver.

The -path B also controls the pins H as they are rising maintaining them approximately parallel as they enter the sliver. As the bars A begin to descend and the pins H to drop out of the sliver the crank B leaves the path B and becomes inefiective and the crank C enters the path C and takes control from this point onward.

As they descend the pins H are caused to lie closely against the following bar thereby reducing the distance between the last pin H and the nip of the front rollers G G to a minimum.

As shown in Figs. 2 and 6 the two cranks B and C re on one end of each bar A but the bars are set in the machine with the cranks alternatively to right and left to provide room for them requiring corresponding cam paths B and C at both sides of the machine whereby one bar is controlled from one side and the adjacent bar from the other side of the machine. As shown in Figs. 13 and 13a the crank B is at one end of the bar A and the crank C at the other end of the bar A With this construction of bar the cam path B will be mounted at one side of the machine and the cam path C at the other side of the machine the cranks and cam paths operating as above described.

When the cranks B and C are at one end of the bar A the other end is made so short as not to engage the teeth of a wheel W and discs D are keyed on the driving shaft to support the ends of the bars as they are raised and moved forward by the driving wheel W at the other end.

The driving wheels W are set far back relative to the back supply roller F, this ensures a vertical pinning of the sliver, the pins H of the rising bars as controlled by the crank B and cam path B are caused to penetrate the sliver approximately vertically or at right angles or nearly at right angles to itself. This enables a very small pinning draft to be employed. A brush K is mounted behind the wheel W or at any convenient place to clean the pins H.

A sliver plate or bridge piece S (see Figs. 10, 10a and 10b) is placed adjacent to the front roller G between the last pin H and the nip of the rollers to prevent the sliver lapping round the pins H with an apron or shield S extending downwards around the roller. It is carried from the ordinary floating conductor or some other part of the machine. It may run continuously from one side of the head to the other or it may be in separate pieces for one, two or more slivers.

As shown in detail in Figs. 11 and 12 the gill gars A are constructed with the pins H set thereon forward of the centre upon the front or the leading edge the pins being approximately tangential to the bar instead of radial as is customary in this type of gill bar. Fig. 11 shows four out of several different combinations of pin positions and Fig. 12 four different methods of securing the pins in position. Such as at e by drilled holes, at f by notches or solder, at g by flat on bar and pins soldered on and at h by a brass gill stock riveted to the bar. To prevent the gill pins H on one bar from pushing against the bar in front of it, projections 7' are soldered or otherwise fastened thereto at intervals between the bars, see Figs. 15 and 15a.

What I claim as my invention and desire to protect by Letters Patent is:

1. In a gill frame of the push bar type the combination of a plurality of separate unconnected gill bars disposed in close proximity adjacent to one another, journals at each end of said bars, a fixed path at each side of the machine along which the journals of the gill bars travel, rotary sprocket wheels with peripheral teeth disposed at the sides of the machine adjacent to the fixed paths by which the gill bars are caused to traverse to the front and return to the back of the machine, two separate cam paths spaced apart but side by side in parallel planes at each side of the machine to engage crank pins carried by the bars and a double crank and crank pins on one end of each bar comprising an inner crank extending from the end of the gill bar and an outer crank carried from and projecting beyond the pin of the inner crank, the cranks being set at an angle one with the other, the pins of the cranks projecting into the said cam paths respectively.

2. A gill frame of the push bar type having a plurality of separate unconnected gill bars disposed in close proximity adjacent to one another and provided each with journals upon which they are traversed and double cranks the crank pins of which lie in different but parallel planes, constructed with fixed paths for the journals of the gill bars, and two discs mounted on the driving shaft adjacent to the driving wheels to complete the fixed path at the back of the machine, two cam paths inclined to the fixed paths set in planes parallel to one another and to the fixed paths with which the crank pins engage and along which they traverse whereby the angle of the gill pins in relation to the plane of the sliver is controlled as the gill bars traverse the machine and enter and leave the sliver.

3. In a gill frame as in claim 1 the combination with the fixed path and cam paths and the push gill bars of a sliver plate placed in the spaces between the descending pins and the nip of the drawing rollers and an apron guard to support the sliver and prevent fibres lapping the pins. 7

4. In a gill frame as in claim 1 the combination with the gill bars of gill pins set thereon upon the front or leading edge the pins being approximately tangential to the bar.

5. In a gill frame as in claim 1 the combination with the gill bars of gill pins set thereon upon the leading edge thereof and projections on the bars to cause them to be more widely spaced when rising at the back slant and prevent the pins coming into contact with the bar in front.

6. A gill frame of the push bar type having a plurality of separate unconnected gill bars disposed in close proximity adjacent to one another and provided each with journals upon which they are traversed and each with double cranks the crank pins of which lie in different but parallel planes, constructed with fixed paths for the journals of the gill bars, and two discs mounted on the driving shaft adjacent to the driving wheels to complete the fixed path at the back of the machine, a cam path in the plane of each row of crank pins inclined to the fixed path and each cam path set in a separate plane parallel to the fixed paths and parallel toone another with which the crank pins respectively engage, and along which they traverse whereby the angle of the gill pins in relation to the plane of the sliver is controlled as the gill bars traverse the machine and enter and leave the sliver.

HAROLD TREVOR EVES.