US1891944A - Reed loom - Google Patents

Description

Dec. 27, 1932. G. E. NORDSTROM 1,891,944

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' REED LOOM Original Filed July 24, 1930 6 Sheets-Sheet 6 Jwomtw V V-fisti fiog Patented Dec. 27, 1932 UNITED STATES PATENT OFFICE GUSTAF E. 'NORDSTROM, OF GARDNER, MASSACHUSETTS, ASSIGNOR TO AMERICAN FIBRE CORPORATION, OF GARDNER, MASSACHUSETTS, A CORPORATION OF MASSA- CHUSETTS REED LOOM Original application filed July 24, 1930, Serial No. 470,365.

January 10, 1931.

This application is a division of my prior application, Serial No. 470,365, filed July 24, 1930.

This invention relates to looms for weaving fibre reeds or other similar material. Fibre reed is formed from twisted kraft paper .and the reed used for weft or filling is supplied .to the loom from a .reel or drum which is positioned at one side of the loom. This weft reed is drawn from the reel or drum by suitable'feeding mechanism and the free end of the reed is projected across the fabric through suitable guideways.

One form .of feeding mechanism is shown in the prior patent to Nordstrom No. 1,749,840, issued March 11, 1930. After a "length of reed is thus inserted, the reed is cut and the inserted piece of reed is beaten into the fabric.

Itis the object of my present invention .to improve themechanism for beating up the reed, .to the intent that much more rapid operation of'the loom may be attained.

.A further object of. my invention is to provide novel mechanism for moving the heaters in a desired orbital .path.

My invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of the invention is shown in the drawings, inwhich Figure 1 is an end View of the reed guiding devices and the actuating mechanism therefor Fig.2 is a detail front elevation, looking in the direction of the arrow2 in Fig. 1;

Fig. 3 is a sectional side elevation of the beater operating'mechanism, taken along the line 33 in Figs. 4 and 5-;

Fig. 4 is a plan view of the driving eccentricsand connections, looking in the direction of the arrow 4 in Fig. 3;

Fig. 5 is a front elevation of the beater and its supporting structure, looking in the direction of the arrow 5 in Fig. 3;

Fig. 6 is a sectional side elevation, showing'the operative relation of the guiding devices and beater;

Fig. -'7 is .a detailsectional side elevation,

Divided and this application filed Serial No. 507,887.

showing the guiding devices in a different relation;

Fig. Sis a front elevation of the rear or lower guiding device;

Fig. 9 is a rear elevation of the front or upper guiding device;

Fig. 10 is a view similar to Fig. 6 but showing the parts at the beginning of the beatup motion; and

Fig. 11 is a side elevation of .thebeater and its supporting frame, and shows the'path of movement of the heater in relation to the warp.

Referring to the drawings, I have shown portions of a reed loomincluding loom sides 10 on which frame members 11 and 12 (Fig. 1) are mounted. Shafts 13 and 14 extend across the loom and are pivotally mounted in the'frame members 11 at the opposite sides v of the loom. Upper'guide members 16are mounted on the iower shaft 14 and lower guide members 18 are mounted on the upper shaft 13.

An arm 20 (Fig. 1) extends rearward from the upper shaft 13 and is connected by a link 21' to the forwardly extending horizontal arm of a bell crank 22 pivoted at 23 on .the"loom frame 10. The link 21 is adjustable as to length and also has a bolt and slot connection with the arm'20, so that both the locus and extent of movement of the arm 20 may be easily adjusted and controlled.

A cam roll 24 on a depending arm of'the bell crank 22 engages a cam 25 continuously rotated by the cam shaft 26 on which it is mounted. A spring 27 holds the roll 24 in close engagement with the cam 25.

Forwardly extending arms 30 and '31 are secured to the upper and lower shafts 13 and l provided with an enlarged head 39 adapted to engage the upper face of the member 34. I have thus provided a lost motion connection between the arms 30 and 31 so constructed that the amount of lost motion may be readily adjusted.

When the arms 20 and 30 on the upper shaft 13 are rocked by the cam 25, the lower guide members 18 are moved from the stationary guiding position shown in Fig. 6 to the releasing position shown in Fig. 7 before any movement of the shaft 14 and upper guiding members 16 takes place. I

The member 34.- (Fig. 2) then engages the upper end of the member 32 and the guiding members 16 and 18 are moved to the inoperative position shown in 10. Suitable springs (not shown) are provided for returning the shafts 13 and 14 and members 16 and 18 to the normal guiding position shown in Figs. 1 and 6.

The upper guiding members 16 (Figs. 7

and 9) are formed as a series of fingers fixed to a plate 40 (Fig. 9) which extends across the loom and is secured to the lower shaft 14, which is preferably of square cross section between its bearings. The guiding members or fingers 16 are thickened at their lower ends and are provided with segmental conical guiding openings 41 which are cut away at their lower sides, so that the lower part of each opening is entirely open. Thelower guiding members 18 are similarly formed in the shape of depending fingers secured to a plate 42 extending across the loom and fasteened to the side of the upper shaft 13. The fingers 18 are provided with forwardly projecting offset extensions which closely underlie the openings 41 in the lower ends of the fingers 16 when the parts are in the normal position shown inFig. 6.

With the parts in this position, the reed is projected by suitable feeding mechanism (not shown) through the openings 41 of the upper guiding members 16 and the reed is held in these openings by the forward projections of the lower guiding members 18.

It will be noted that the shafts 13 and 14 are mounted on the fixed members 11 and that they remain in fixed position during the feeding of the reed. This is a substantial advantage, as it permits a fresh reed to be inserted in the guiding members while the lay is beating up the previous reed. This saves a substantial amount of time over the earlier construction of our loom, in which the guiding members were mounted on the lay and it was necessary to bring the lay to rest during each feeding movement.

Suitable cutting mechanism, not shown, is provided for severing the reed after a portion thereof has been inserted in the guiding members 16 and 18.

The beater of my improved loom is preferably formed by cutting recesses 72 in abeater plate 76 (Fig. 5) thus forming a plurality of beater fingers 71 projecting upwardly from the plate and spaced apart to provide openings for the warp threads. The heater plate is mounted on a lay 73 having downwardly extending supporting arms 74 substantially spaced apart. At theirlower ends the arms 74 are mounted on a cross shaft 75 and at their middle portions the arms 74 are connected by a second or upper cross shaft 76 (Fig. 5).

At their lower ends the arms 74 arealso provided with hub portions 77 which are received in forwardly and downwardly inclined slots or cam openings 78 (Fig. 11) formed in brackets 79 secured to an inner frame 10 by bolts 80 (Fig. 5) extending through slots in the bracket 79.

An eccentric 81 (Fi s. 3 and 1) is mounted on a drive shaft 82 and is connected by a link 83 to the lower cross shaft 75. A pair of additional eccentrics 85 are mounted on the shaft 82 in a predetermined angular relation to the eccentric 81, and the eccentrics 85 are connected by links 86 to the end portions of the upper cross shaft 76.

As the eccentric shaft 82 rotates, the lay 73 moves from the full line to the dotted line position shown in Fig. 11 and the upper ends of the fingers 71 describe the closed path in-' dicated in broken lines in the upper part of Fig. 11.

The eccentrics are so related that the upper eccentrics 85 swing the lay 73 rearward and downward so that it passes under the guiding members 16 and 18 as indicated in Fig. 6.

The lower eccentric then becomes operative, drawing the lower rock shaft 75 rearward and at the same time causing it to be raised by the action of the cam openings 78 in the brackets 79. The beater fingers are thus raised approximately at their rearward limit of movement and are thereafter moved forward in a position to engage the reed B (Fig. 10) which has been forced downward out of the openings 41 in the upper guiding members 16 by the warp threads W which have been moved downward by the closing of the shed, such movement occurring ust after the 1' guiding members have been separated as shown in Fig. 7. I

The heater fingers'71 are forced forward in raised position, as indicated in Fig. 11, by the continued action of the eccentrics and at the same time they are gradually lowered by sliding the shaft 75 forward in the cam openings 78.

he action of the lay carrying the beater fingers is thus substantially continuous and without any extended dwell and the motion as produced by the eccentrics 81 and 85 is extremely easy and can be performed at relatively high speed. Furthermore, the feeding of the reed takes place during the beat Cir ing up of the previously inserted reed, so that a fresh reed is ready to be beaten up as soon as the lay returns to rearward position.

I am thus able to accomplish several very desirable results. In the first place, the reed is fed through guiding members which are stationary during the feeding operation; in the second place, the reed is positively removed from the guiding members by the closing of the warp shed, and in the third place the beating mechanism is operable at relatively high speed and is not required to come to rest during the feeding operation. These and other advantages permit operation of the loom at substantially higher speeds than have been heretofore possible and also reduce the wear on the parts, due to the marked smoothness of the eccentric action.

The claims in this application are directed particularly to the structure of the beaters and the actuating mechanism therefor and to combinations of parts with which these elements actively cooperate.

Other features of the invention are retained in the original application.

Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed, other wise than as set forth in the claims, but what I claim is 1. In a reed loom, a lay, beater members mounted thereon, supporting members for said lay, the lower ends of said supporting members being guided for forward and rearward movement in fixed cam slots, and separate eccentric actuating devices directly connected to substantially spaced end and middle portions respectively of said supporting members.

2. In a reed loom, beater members, a lay carrying said beater members and mounted on a support having a movable pivot about which it swings, means to move said support bodily forward and rearward, and additional fixed cam means acting directly on said movable pivot and effective to vary the elevation of the movable pivot during and by reason of such forward and rearward movement of said support.

3. In a reed loom, beater members, a lay carrying said beater members and mounted on a support having a movable pivot about which it swings, continuously rotating eccentric means directly engaging substantially spaced end and middle portions of said support and effective to move said support bodily and positively forward and rearward, and additional means to vary the vertical position of said movable pivot during such forward and rearward movement.

4. In a reed loom, beater members, a lay carrying said beater members and mounted on movable supports, said supports having pivot portions on their lower ends, fixed cam plates having forwardly and downwardly inclined slots in which said pivot portions are slidable, a plurality of continuously rotating eccentrics, connections from said eccentrics to said pivot portions, and connections from said other eccentrics to intermediate points in said supports, whereby said lay and supports are given a positive bodily forward and rearward movement, and a simultaneous change in vertical position.

5. A reed loom as set forth in claim 4, in which the change in vertical position at the first part of the forward stroke is substantially upward and during the first part of the rearward movement is substantially downward.

6. In a reed loom, a lay, beater members mounted at the upper end thereof, supporting members for said lay, means to give different parts of each supporting member substantial forward and rearward movements at different times but in definite timed relation, said means acting on each supporting member at its lower end and at an intermediate point of its length and giving said supporting members forward and rearward movements at said intermediate point which are sub stantially greater than the corresponding movements at the lower end, and additional means to raise and lower said supporting members during such forward and rearward movements.

In testimony whereof I have hereunto affixed my signature.

GUSTAF E. NORDSTROM.

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