US853600A - Loom pick-finder. - Google Patents

Description

'UNiTnn sTATns PATENT FETCH.

& KNOWLES LOOM WORKS, A CORPORATION OF MASSACHUSETTS.

Loom PICK-FINDER.

Speecation of Letters Patent.

Patented May 14, 1907.

Application filed June 20,1906. Serial No. 322.589.

To a/ZZ whom t may concern:

Be it known that I, EPPA H. RYON, a citizen of the United States, residing at Worcester, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Loom Pick- Finders, of which the following is a specification. A

My invention relates to pick finder mechanism for looms, and `particularly to that class of looms in which the movement of the harnesses is controlled by a vdobby pattern chain, and the reversing mechanism for the pattern chain consists of two bevel gears loose on a shaft, meshing with a driven bevel gear, and a clutch splined on said shaft, and movable thereon into engagement with one or the other of said two bevel gears.

In this class of looms it is necessary, before reversing the pattern chain cylinder to lind the pick, to turn the pattern chain cylinder back one pick, and also to turn the pattern chain cylinder forward one pick, after finding the pick.

The object of my invention is to provide a supplemental mechanism, adapted to be combined with the reversing mechanism above described, by means of which the weaver at one operation or movement, will manually turn the pattern chain cylinder back one pick, and operate the reversing mechanism, or turnthe pattern chain cylinder forward one pick, and operate the revers ing mechanism.

My invention consists in certain novel features of construction of my improvements, as will be hereinafter fully described.

I have only shown in the drawing a detached portion of a loom, and of a dobby mechanism, and of the reversing mechanism referred to, with my improvements combined therewith., sufficient to enable those skilled in the art to understand the construction and operation thereof.

Referring to the drawings Figure 1 is an end view of portions of the head of a loom, detached, and the dobby mechanism and the reversing mechanism, and my improvements combined therewith, and, Fig. 2 shows a part of the mechanism shown in Fig. 1, detached, and in another position.

In the accompanying drawing, 1 is a loom side or frame. 2 is the crank shaft, 3 a gear fast thereon, which meshes with and rotates a gear 4 loosely mounted on a stud, not shown. Attached to the gear 4 is a bevel gear 5, which meshes with and rotates a bevel gear 6, fast on an upright shaft 7 mounted in suitable bearings 8 and 9. The upper part of the shaft 7 has fast thereon a bevel gear 10, which meshes with and rotates two bevel gears 11 and 12, both loosely mounted on the shaft 13, which has bearings 14 on the dobby stand or frame 15.

The shaft 13 has fast on one end, in this instance the left hand end, a bevel gear 16, which meshes with and rotates a bevel gear 17 fast ona shaft 18, which has a worm 19 fast thereon, which meshes with and rotates a worm gear 20 fast on the shaft 21 on the dobby cylinder 22. On the shaft 13, between the gears 11 and 12, is splined a clutch 23, which is adapted to be moved longitudiy nally on the shaft 13, and into engagement with either one of the gears 11 or 12, to attach either one of said gears to said shaft 13,

to cause said shaft to rotate in one direction or the other, through the driven gear 10 on the shaft 7 meshing with the gears 11 and 12.

The clutch 23 may be moved into its intermediate position, between the gears 11 and 12, in which position it will not engage either gear, and both gears will be loose on the shaft 13.

All of the above described parts may be of the usual and well known construction.

I will now describe my improvements.

A stand 24 is in this instance secured to the dobby frame 15, and carries a stud 25, on which is loosely mounted a segmental bevel gear 26, having in this instance an operating handle 27. this instance extends back of and in the path of, and is adapted to engage a bevel pinion 28 fast on the shaft 13 to rotate said pinion and the shaft 13 in one direction or the other, according to the direction of movement of the segmental gear 26 through the movement of the handle 27. The segmental gear 26 has a curved slot or opening 26/ therein, the curvature of which, intermediate its ends is concentric with the aXis of the gear 26, and each end of the slot 26 has an offset portion. A pin 30 on a lever 30, pivoted in this instance at its upper end on a pin 31 on the stand 24, extends into the slot 26 in the gear 26. The

The segmental bevel gear 26 in IOO lower end of the lever 30 has adjustably secured, in an elongated slot 30 therein, a headed bolt 32, which is adapted to be engaged by one of two recesses 33 in one end of a yielding or give-way connector 34, comprising in this instance a bar 34, and a rod 34, adapted to move longitudinally in openings in said bar 34 and yieldingly connected therewith, in this instance by two helically coiled expansion springs 34 bearing at one end against the bar 34 and at their other ends against a collar 34 fast on the rod 34. The rod 34 is pivotally connected to one end of the clutch lever 35, which is pivotally mounted at its other end on a stud 36 in a stationary stand 37. The clutch lever 35 has a pin 35 thereon, which extends into an annular groove 23 in the clutch 23. t

i When the give-way connector 34, intermediate the clutch lever' 35 and the lever 30, has its outer recess 33 connected with the bolt 32 on the lever 30, as shown in the drawing, the movement of the. segmental bevel gear 26 in one direction, from one extreme position to the other, will, through the pin 30 traveling in the slot 26 in said gear, move the clutch lever 35, through the connector 34, to one extreme position, as shown in Fig. 1.

The movement of the segmental bevel gear 26 in the other direction to its eXtreme position, as shown in Fig. 2, will move the clutch lever 35 and clutch 23 to its other extreme position. I i

The operation of my improvements, from the above description in connection 'with the drawing will be readily understood by those skilled in the art.

Vhen it is desired to reverse the movement of the dobby pattern chain cylinder, the handle 27 of the segmental bevel gear 26 is moved, to carry the segmental bevel gear 26 from one eXtreme position, its normal position, shown in Fig. 2, to its other eXtreme position shown in Fig. 1.

The shape of the slot 26 in the segmental gear 26 at each end is such, that the beginning of the movement of the segmental gear 26, will, through the pin 30 on the lever 30, move the lever 30, and through the connector 34 move the clutch lever 35 and clutch 23 into its intermediate or inoperative position, leaving both gears 11 and 12 loose on the shaft 13. segmental gear 26, the pin 30 on the lever 30 will travel in the slot 26 intermediate its ends, which is concentric with the axis of the gear, so that there will be no movement of the lever 30, but during this time the bevel gear 26 will be in mesh with the bevel gear 28, and will cause one complete revolution of said gear 28, and also of the shaft 13, and through connections to the dobby pattern chain cylinder 22 will move said cylinder back one pick.

In the continued movement of the ,through connector 34 causes the clutch lever 35 to be moved, and the clutch 23 to engage with the bevel gear 11, as shown in Fig. 2. The pattern chain will now be turned in the opposite direction as far as desired, and the loom operated to find the pick, and after the pick is found, the segmental gear 26, through the handle 27, is moved in the opposite direction, and to the position shown in Fig. 2, and the movement of said segmental gear 26 will cause the movement of the lever 30, and through connector 34 the movement `of the clutch lever 35, to move the clutch into its intermediate position, and the engagement of the segmental gear 26 with the bevel pinion 28 will give one revolution to said gear 28 and to the shaft 13, and through connections to the cylinder 22 move said cylinder forward one pick, and the continued movement ofthe segmental gear 26 will, through the pin 30 on the lever 30 entering the offset end of the slot 26, move the clutch 23 into engagement with the gear 11, and cause the pattern chain to be operated in the normal way.

The inner recess 33 in the arm34 may be engaged with the headed bolt 32 and the clutch lever 35 and clutch 23 will be held in their intermediate position, and out of engagement with both gears 11 and 12, leaving said gears loose on the shaft 13, so that the pattern cylinder can be rotated in either direction by the hand wheel, not shown, on the worm shaft 18, as will be well understood.

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

The weaver by means of the segmental gear 26, operated in this instance by the handle 27, can by one movement of said handle, and at one `operation, move the dobby pattern chain cylinder back one pick,

and. then operate the reverse mechanism, to

IOO

cause the reverse motion of the pattern chain cylinder, and can also move the pattern chain cylinder forward one pick, and then operate the reverse mechanism, to cause the forward motion of the pattern chain cylinder.

It will be understood that the details of construction of my improvements may be varied if desired.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. In a pick finder meehanismof a loom,

the combination with a pattern chain cylinder, connections intermediate said cylinder bevel gear, and a clutch splined on said shaft, and a clutch lever for moving said clutch to cause the rotation of said shaft in one direction or the other, of manually operated means for moving said clutch, first into its inoperative`and then into its operative position, and for revolving said shaft in one direction or the other, While the clutch is in its inoperative position, said means consisting of a gear manually operated and adapted to engage a gear on said shaft to rotate said shaft, and connections from said manually operated gear to said clutch lever to move the same.

2. In a pick finder mechanism of a loom, the combination With a pattern chain cylinder, connections intermediate said cylinder and a rotary shaft, and said shaft, tWo bevel gears loose thereon and meshing With and driven by a third bevel gear, and said third bevel gear, and a clutch splined on said shaft, and a clutch lever for moving said clutch to cause the rotation of said shaft in one direction or the other, of manually operated means for moving said clutch first into its inoperative and then into its operative position, and for revolving said shaft in one direction or the other While the clutch is in its inoperative position, said means consisting of a segmental gear manually operated, and adapted to engage a gear on said shaft, and said gear on said shaft, said segmental gear having a slot therein, a portion of Which is concentric With the axis of the gear, and the tWo ends of Which are offset and non-concentric With the axis of the gear, a pin extending in said slot and carried on a lever, and said lever, and a connection from said lever to the clutch lever, i

3. In a pick finder mechanism of a loom, the combination with a pattern chain cylinder, connections intermediate said cylinder and a rotary shaft, and said shaft, tWo bevel gears loosethereon and meshing With and driven by a third bevel gear, and said third bevel gear, and a clutch splined on said shaft, and a clutch lever for moving said clutch, to cause the rotation of said shaft in one direction or the other, of manually operated means for moving said clutch, first into its inoperative and then into its operative position, and for revolving said shaft in one direction or the other While the clutch is in its inopative position, said means consisting of a segmental gear manually operated, and adapted to engage a gear on said shaft, and said gear on said shaft, said segmental gear having a slot therein, a portion of which is concentric With the axis of the gear, and the tWo ends of Which are offset and non-concentric With the axis of the gear, a pin extending in said slot andcarried on a lever, and said lever, and an adjustable connection from said lever to the clutch lever.

4. In a pick finder mechanism, a rotating shaft, a sliding clutch, oppositely moving gears loose on said shaft, eitherone adapted to be engaged by said clutch, manually operated means for moving said clutch and turning said shaft at one operation.

f EPPA H. RYON.

IVitnesses:

Jol-IN C. DEWEY, M. IIAAs.

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