US733490A - Lappet-loom. - Google Patents

Description

'PATENTED JULY 14, 1903.

11., LBDOUX. LAPPET LOOM.

APPLICATION FILED MAR. 12, 1903.

2 SHEETS-SHEET 1.

N0 MODEL.

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PATENTED JULY 14, 1903.

H. LEDOUX.

LAPPET LOOM.

APPLICATION FILED MAR. 12, 1903.

2 SHEETS-SHEET 2.

H0 MODEL.

Uw/v/m %QWW Patented July 14, 1903.

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HECTOR IlEDOUX, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROM TON do KNOW'LES LOOM WORKS, OF WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

LAPPET=LOOIVL SPECIFICATION forming part of Letters Patent No. 733,490, dated July 14, 1903.

Application filed March 12, 1903.

To all whom it wmy concern:

Be it known that I, HECTOR LEDOUX, a citi- Zen of the United States, residing at Worcesa ter, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Lappet-Looms, of which the following is a specification.

My invention relates to a lappet-loom, so termed, for weavingjby means of needles, figtires or designs on the face of the fabric in the well-known way.

The object of my invention is to improve upon the construction of the needle-operating mechanism of a lappet-loom as ordinarily made, and more particularly to increase the range of movement and the variety of movement of the needle-bar carrying the needles transversely of the fabric.

In my improved construction I use two pat- 2o tern-surfaces having elevations of varying heights and a lever for each pattern-surface, both levers connected with a single needlebar having thereon the needles which carry the lappet-threads. The movement of either lever or both levers by the operation of the pattern-surfaces thereon will communicatea longitudinal movement to the needle-barv to place the needles carrying the lappet warpthreads in varying positions over the sheds of the usual warp-threads and interweave the lappet warp-threads on the surface of the fabric to produce the desired figures or designs in the usual manner in lappet-weaving. The two pattern-surfaces maybe made up or 5 formed of different elevations to produce any desired figure by the movement of the needlebar, and one of the pattern-surfaces may be provided for several successive picks or movements of the pattern-surface with elevations of the same height, so that the lever of said pattern-surface will remain at rest and not be moved by said pattern-surface, while the other pattern-surface may have elevations of varying heights, so that the movement of the 5 needle-bar will be governed only by the lever of said pattern-surface. When the two pattern surfaces have elevations of varying heights, the two levers of said pattern-surfaces will act, through the connection to the needlebar,to communicate to the needle-bar a move Serial No. 147,393. (No model.)

'ment equal to the combined movements produced' by each of said levers. In order to give an increased movement to the needle bar over that produced by the movement of one of the levers, I make a part of the connection to the needle-bar, one end of which is attached to one of the levers, flexible, and extend it down, and pass it loosely around a pulley on the other lever and then carry it up to form a loop around said pulley before it passes to and is connected with the needlebar. The movement of the pulley on the lever in the loop of theconnection produces an increased movement of the needle-bar over the movement of the lever,as will be well under- 6 stood.

My invention consists in certain novel features of construction of my improvements.

As my improvements are adapted to be applied to any of the well-known forms of jac- 7o quard or pattern-chain looms, I have only shown in the drawings detatched portions of a loom with my improvements thereon sufficient to enable those skilled in the art'to understand the construction and operation thereof.

Referring to the drawings, Figure 1 is an end elevation of a loom-frame and lay with my improvements applied thereto. Fig. 2 is,

on an enlarged scale, a perspective View of parts of my improvements shown in Fig. 1

detached; and Fig. 3 is, on an enlarged scale, a plan view of a portion of the loom-frame and lay and needle-bar and connections detached.

In the accompanying drawings, 1 is the loom-frame; 2, the lay-sword, pivotally supported at its lower end in the usualway.

3 is the lay; 4, the connector to the crankshaft; 5, the crank-shaft, and 6' the bottom shaft. Said crankshaft and bottomshaft are connected by gears (not shown) in the usual manner.

Supported on the lay and adapted to slide longitudinally in the guides 7 thereon is the 5 needle-bar 8, carrying the lappet-thread needles, which are attached to clamps 9, by which the needles are secured to the needlebar 8 in the usual way. To one end of the needle-bar 8 is attached a spring 10, (see Fig. :00

3,) which acts to move the needle-bar to its extreme right-hand position or to its normal position when not acted on by the mechanism connected to its other end.

The mechanism for raising and lowering the needle-bar is not shown and may be of any well-known construction and operation.

All of the above part-s may be of any ordinary and well-known construction.

I will now describe my improvements.

A shaft 11 is mounted at its inner end in a bearing 12, secured to the loom-frame. (See Fig. 2.) Said shaft 11 has fast thereon a collar11 and a ratchet-wheel 13, which is rotated by a pawl 14,111 this instance connected with an eccentric 15 on the bottom shaft 6. The revolution of the bottom shaft 6 communicates, through the eccentric 15, motion to the pawl 14 to intermittently rotate the ratchet-wheel 13. Also fast on the shaft 11 is a cam 16, forming in this instance the pattern-surface to operate the lever 17, which is pivoted at one end on a pin 18 in a stand 19, fast to the loom side. The lever 17 carries in this instance a plate or surface 17, which extends in the path of and is engaged by the cam or pattern surface 16, and on the end of the lever 17 is pivotally mounted a pulley 21.

Upon the upper part of the loom-frame is secured a stand 22, and in hearings on said stand is mounted a shaft 23, having fast thereon a hand-wheel 24 and a pattern-chain cylinder 25, carying the pattern surface or chain 26, made up of links 26 of different elevations in the usual way. Rotary motion is communicated to the shaft 28 in any wellknown way from some driven part of the loom.

On the stand 22 is pivoted on a pin 27 one end of the lever 28, carrying in this instance a roll 29, which extends over and rests upon the pattern chain or surface 26. To the end of the lever 28 is attached one end of a connection 30, which extends downwardly and passes loosely around the pulley 21 on the lever 17 and from said pulley passes upwardly and over a guide-pulley 31 on a stud 32 on a stand 83, secured in this instance to the back side of the lay at the end thereof and is connected by a wire or link 34 to the end of the needle-bar 8, as shown in Figs 8.

The cam 16 and the pattern chain or surface 26 form in this instance the two patternsurfaces hereinbefore referred to, and the lever 17 and the lever 28 are the two levers of said pattern-surfaces.

The flexible connection 80 connects the lever 28 and also the lever 17 with the needlebar 8 to move the needle-bar in one direction v longitudinally and with it the needle trans versely of the fabric, and the spring 10, attached to the needle'bar 8, acts to draw it in the opposite direction and to hold the levers 17 and 28 in contact with their pattern-surfaces.

From the above description, in connection with the drawings, the operation of my imtern surface or cam 16 will through its lever 17 move the needle-bar longitudinally, according to the shape of the cam 16, by reason of the engagement of the pulley 21 with the connector 30, and, vice versa, if the shape of the cam 16 is such that the revolution of said cam will not move the lever 17 said'lever will remain at rest and the needle-bar will be moved longitudinally through the connection 30 by the lever 28, providedthe pattern-surface 26 acting on said lever has elevations of varying heights. It will thus be seen that the longitudinal movement of the needle-bar may be governed by the movement of the lever of one pattern-surface only. If both the pattern-surface 26 and the cam 16 have elevations thereon of varying heights, the two levers 17 and 28 will act, through the single con nection 30 to the needle-bar, to communicate a longitudinal movement to said bar equal to the combined movements produced by each of the levers. In this way the movement of the needle-bar will be greatly increased over the movement communicated to it by one of the pattern-surfaces, and, further, by reason of the connection 80 being loosely looped or passed around the pulley 21 a downward movement of the lever 17 and pulley 21 will produce an increased movement of the connection 80 intermediate said pulley 21 and the needle-bar, and consequently an increased movement of the needle-bar. For example, a downward movement of the lever 17 of half an inch will by reason of the loop in the connection 30 produce a downward movement of an inch on the connection, and consequently a movement of an inch on the needle-bar.

The advantages of my improvements will be readily understood by those skilled in the art.

It will be understood that the details of construction of my improvements may be varied, if desired, and may be adapted to be applied to any well-known form of loom for weaving lappet goods. instead of the cam 16 a pattern-surface corresponding to the pattern-surface 26 or any other well-known style of pattern-surface may be used.

1 preferably use two pattern-surfaces, as hereinbefore described; but, if desired, in weaving some patterns the pattern-surface 26 maybe dispensed with and the end of the connection 30 attached in a fixed position or to some stationary part, allowing the pulley 21 on the lever 17 to run loosely in the loop of the connection 81 to produce an increased motion of the needle-bar, as above described.

Having thus described my invention, What I claim as new, and desire to secure by Letters Patent, is-

1. In a lappet-loom, two rotary patternsurfaces, provided with elevations of varying heights, two levers, one for each pattern-surface, a needle-bar, a connection intermediate said levers and said bar, to communicate to said bar a longitudinal niovementequal to the combined movements produced by said levers, substantially as shown and described.

2. In a lappet-loom, two rotary patternsurfaces, provided with elevations of varying heights, a lever for each pattern-surface, a needle-bar, a connection from said bar to both of said levers, said connection adapted to be moved by either, or both of said levers, to

give a longitudinal motion to the needle-bar, substantially as shown and described.

3. In a lappet-loom, two rotary patternsurfaces, provided with elevations of varying heights, a lever for each pattern-surface, a pulley on one of said levers, a needle-bar, a connection from said bar to both of said levers, said connection loosely looped around said pulley on one of said levers, and adapted to be moved by either, or both of said levers, to give a longitudinal motion to the needlebar, substantially as shown and described.

H. LEDOUX.

W'itnesses:

M. HAAS, J. G. DEWEY.

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