US1863862A - Loose reed loom - Google Patents

Description

June 21, 1932. w. E. LUNDGREN 1,863,862

LOOSE REED LOOM Filed Jan. 7, 1951 2 Sheets-Sheet l June 21, 1932. w. E. LUNDGREN 1,863,862

' LOOSE REED LOOM Filed Jan. '1, 1931 2 Sheets-Sheet 2 Patented June 21, 1932 UNITED STATES PATENT our-"ice WILLIAM E. LUNDGREN, OE WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMRTQN & KNOWLES LOOM WGRKS, WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS LOOSE REED. LOOM Application filed January 7, 1931-. Serial 1110.. 50.7,212.

This invention relates to looms in which the reed is so mounted that it may have a yielding movement relative to the lay at the beat-up. Such loose reeds are found desir able in looms for weaving silk, rayon or other delicate fabrics, as the abruptness of the blow at the beat-up is thus modified. t is necessary, however, that the loose reed be held firmly in position as the lay moves toward back center, so that the path of flight of the shuttle may be accurately defined and maintained.

It is the general object oi my invention to provide an improved device for thus holding the reed in predetermined position at back center.

In the preferred form, the device also acts as a stop to limit yielding movement at front center, and provision is made for adjusting the amount of yielding movement.

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, in which Fig. 1 is a rear elevation of parts of a loom embodyin my improvements;

Fig. 2 is a sectional side elevation, taken along the line 22 in Fig. 1;

Fig. 3 is a view similar to Fig. 2 but showing the parts in a different position;

Fig. 4 is a sectional plan view, taken along the line 4-4 in Fig. 3;

Fig. 5 is a detail rear elevation, looking in the direction of the arrow 5 in Fig. 2;

Fig. 6 is a detail plan view, taken along the line (i6 in Fig. 2;

Fig. 7 is a detail rear elevation, looking in the direction of the arrow 7 in Figs. 2 and 6; and

Fig. 8 is a detail sectional elevation, taken along the line 8-8 in Fig. 1.

Referring to the drawings, I have inclica-t-ed a portion of a loom frame 10 and a lay 11 mounted upon lay swords 12 and swinging about a rock shaft 13. A reed 14 is loosely mounted in the lay 11 and is provided with depending fingers 16 (Fig. 8) through which extend headed studs 17. The studs 17 also extend through bracketslS secured to the un- I positioned to engage the lower part of the reed 14 or its supporting frame.

. The forwardly projecting arm 25 of each lever 22 is connected by a. link 27 to a pivot 28 in the free end of a lever or support 30,

pivoted at 31 to av bracket 32 fixed tothe loom frame 10.

An adjusting screw or stop 34 is threaded in a rearwardly projecting portion of each bracket 32 and engages'the under side of each lever 30'. Check nuts 35 are provided for securing the adjusted screws in desired positions.

A split collar '40 is clamped on each'link 27 and a spring 42'conneots the collar 40 to a stud 43 in the extreme rear end of the associated bracket 32-. The springs 42 are very much heavier and stronger than the springs 19 previously described. When the pressure of the springs 42 is applied to the-levers 22,

the reed is practically fixed in the lay and effectively maintainsthepath of flightof the shuttle.

It will be noted that the pivotal connections 28 between the links 27 and the supports 30 are substantially out of alignment with the axis of the rock shaft 13, so that as the lay 11 moves rearward, the links 27 will cause the levers 22 to turn about their pivots'23 and to move tromthe inoperative position of Fig. 2 to the operative position of Fig. 3.

Aft-er the levers 22 reach the position of Fig. 3, they cannot turn further upon their pivots 23 andconsequently the'links 27 and supports 30'are moved upward, as indicated in Fig. 3, thus placing the springs 42 under additional tension. 1

As the lay thereafter moves forward, the levers 22' are swung relatively rearward, releasing the reed 14 except for the rather light tension of the springs 19. As the lay continues to move forward, the stop screws 34: determine the position of the levers 22 relative to the lay 11 and reed 14: and this position may be changed by adjusting the screws 34:

upward or downward. j

I have thus provided a construction by which a strong spring pressure is applied to the reed as the lay moves toward back center,

while only a light yielding pressure is applied to the reed as the lay moves toward the beat-up at front center. Furthermore, this result is accomplished by very simple mechanical elements which are readily adjusted 15 and which are entirely reliable in operation.

Having thus described my invention and the advantages thereof, I do notwish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is I 1. In a loom, a lay, 'a reed loosely mounted therein, means to yieldingly resistmovement of said reed relatii e to said lay, and means to apply additional pressure to said'reed as the lay moves toward back center, said additional means comprising members movably mounted on the lay, relatively heavy springs acting to move said members against said reed, and

. positively acting means effective to swing said members away from said reed as the lay moves forward.

2. In a loom, a lay, a reed loosely mounted therein, means to-yieldingly resist movement of said reed relative to saidlay, and means to apply additional pressure to said reed as the lay moves toward back center, said additional means comprising members movably mounted on the lay, relatively heavy springs actingto move said members against said reed, links 40 connected at their upper ends to said mem-.

bers, and supports to which the lower ends of said links are pivoted, said lower pivots, being out of alignment with the axis of oscil-. lation of the lay and said links being effective 7 to move said members away from said reed as;

the lay-moves forward.

3. In a loom, a lay, a reed loosely mounted} therein, means to yieldingly risist movement of said reed relative to said lay, and means to.

apply additional pressure to said reed'as thelay moves toward back center, said additional means comprising members movably mounted on the lay, relatively heavy springs acting to move said members against said reed, links connected at their upper ends to said members, supports to which the lower ends ofsaid links are pivoted, and means to vertically adjust said supports, said lower pivots being out of alignment with the axis of oscillation of the lay, and said links being efi'ective to swing said members away from said reed as the lay moves forward. 1

In testimony whereof I have hereunto affixed my signature.

WILLIAM E. LUNDGREN.

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