US440833A

US440833A - sawyer

Info

Publication number: US440833A
Authority: US
Publication date: 1890-11-18
Anticipated expiration: 1907-11-18

Description

(No Model.) 4 sheets shet 1.

0. A. SAWYER & M. M. LAHUE.

LOOM.

' Patented Nov. 18, 1890.

(No Model.) 4 Sheets-Sheet 3.

0. A. SAWYER & M. M. LAHUE.

LOOM.

Patented Nov. 18, 1890.

(No Model.) 4 Sheets-Sheet 4.

0. A. SAWYER 8c M. M. LAHUE.

LOOM.

No. 440,833. Patented'Nov. 18, 1890.

WW %%E;5 Am ewdtcws the loom.

UNITED STATES PATENT OFFICE.

ORREN A. SAVYER AND MOSES M. LAHUEJOF LONVELL, MASSACHUSETTS.

LOOM.

SPECIFICATION forming part of Letters Patent No. 440,833, dated November 18, 1890.

Application filed May 23, 1890.

To all whom it may concern.-

Be it known that we, ORREN A. SAWYER and MOSES M. LAHUE, of Lowell, in the county of Middlesex and State of Massachusetts, have invented a new and useful Improvement in Looms, of which the following is a specification.

Our improvement relates to looms for weaving; and it consists in certain new and useful constructions and combinations relating to the take-up mechanism of the same,substantially as hereinafter described and claimed.

In the drawings, Figure 1 is a side elevation of a portion of a loom having ourinvention applied thereto. Fig. 2 is an enlarged detail View of a portion of the mechanism shown in Fig. 1. Fig. 3 is a top plan view of the parts shown in Fig. 2. Figs. 4 and 5 are side views of the take-up, ratchet and pawl, and easing detached fromthe loom. Fig. 6 is a top plan view of the parts shown in Fig. 5. Fig. 7 is a side view of the hinged lid detached from the casing. Fig. 8 is an edge view of the same. Fig. 9 is a side elevation of a part of the opposite side of the loom shown in Fig. 1, showing the connection of the shipper-rod with the driving-belt. Fig. 10 is a top plan View of the'same. Fig. 11 is an end elevation of the same.

A is the frame of the loom. The warpbeam 1 is arranged with the usual tension appliances, which are omitted for the sake of clearness of illustration. The line of the warp leading from the warp-beam is shown by the dotted line 2. It leads over the roller 3 and thence through the reed of the lay, where it is woven to the breast-beam, and thence passes downward around the usual take-up rollers. (Shown in dottedlines, Fig. 2.) The lay 4 is shown; but the reed has been omitted, as well as the picker-staffs, heddles, &c., these forming no part of our invention.

The lay of the loom is driven through the pulley 5 on the crank-shaft 6 by cranks andthe links 7. The belt 8 of pulley 5 is shipped onto the loose pulley 9, Figs. 9 and 10, to stop On the main shaft 6 an eccentric cam 10 is attached to the end projecting beyondthe frame of the loom on the side shown in Fig. 1. The pawl-bar 11 is connected to this eccentric at one end by a strap 12 surrounding the latter. At the other end the Serial No. 362,872. (No model.)

pawl-bar carries the pawl 18, which operates the ratchet-wheel 14c. (Shown in dotted lines in Fig. 2 and detached in Fig. 4.) This ratchet wheel is mounted on the shaft 15,and the latter is geared to the take-up of the loom in the usual way by the gears 46 on the shaft 15 and the gears 50 and 51 on the take-up rollers. The pawl-bar 11 is bifurcated through a portion of its length to receive the ratchetwheel, as shownin Fig. An auxiliary holding-pawl 16 is pivoted on the stud 57 and engages with the ratchet-wheel 14 to keep it from turning backward while the pawl 13 is moving in the direction to take up another notch in the ratehetwheel on its next forward movement. The pawls l3 and 16 have the usual handles 13 and 16, respectively, to them, for lifting them out of engagement with the ratchet-wheel 14; On the opposite side of the loom, Figs. 9, 10, and 11, is located the shipper 17, which throws the belt 8' off of the pulley 5 onto the loose pulley 9., This shipper is pivoted to a stud on the frame at 18 and is thrown over by the spring 19, and it carries the rod 20, rigidly attached to it, which embraces the belt at its outer end and moves it over with the shipper. The strap 21 is secured to the frame and embraces the upper end of the shipper-bar 17. This strap is formed with an offset or recess in it just opposite the pulley 5, into which the bar can be seated, bringing the rod 20 and belt onto the tight pulley 5. The pivot 18 of the shipperbar has a slight play, which permits this, and the tension of the spring 19 holds the bar in the recess. If the bar be pressed sidewise out of the recess, however, the spring will throw it into the outer part of the recess in the strap 21 and ship the belt onto the loose pulley.

All of the above parts of the loom are of the usual and well-known construction, and will be understood without further description.

In running the loom the quality of the cloth is largely regulated by the speed of the take up in proportion to that of the lay, and the speed of the take-up is controlled by the number of notches of the ratchet-wheel 14. which the pawl 13 draws forward at each reciprocation of the pawl-bar 11'. This gives the number of picks to the inch of cloth. It is found, however, that an operator can turn ICO standing still.

the wheel 14 by hand when the loom is running andmove the take-up faster, and that the continuous operation of the loom while this is being done so distributes the weft that it makes that part of the cloth appear even unless the picks are counted or the cloth is held up against the light. This renders the movement by hand of the ratchet-wheel 14 by the workman difticult of detection, and he is thus enabled to get credit and pay for weaving as much more cloth at the end of the week as he has illegitimately increased the speed of wheel 14. If he should attempt to move the wheel 14 out of its proper place when the loom is standing still, there will be a thin place left in the cloth, which can be at once seen, because when the loom starts up again it will not distribute the weft over such thin place as it would if the loom had been running when the wheel was turned. It is, therefore, practically impossible to change the normal rate of take-up except when the loom is running.

In the operation of the loom in weaving it becomes necessary to have free access to wheel 14 to arrange and adjust the weaving by moving the take-up back and forth; but this necessity only exists when the loom is Any ordinary casing or covering over of the wheel 14 would prevent interference with the take-up when the loom is running; but it would also prevent the necessary manipulation of the take-up by the wheel 14 when the loom is standing still, and this disadvantage has prevented any successful safeguard being adopted against interference with wheel 14 when the loom is in operation. Our present improvement is intended to meet this difliculty. It consists of a casing for wheel 14 and pawl 13, with a lid or cover which can easily be opened by the operator to obtain access to the wheel; but the act of opening it stops the loom. The casing 30 is attached to the loom-frame by abolt at 31 and fits under the lower part of ratchet-wheel 14 and up around its shaft-box on the back side and over the larger part of its front face. This casing allows the pawl-bar 11 to drop to place in it after it is applied. On top of the casing is attached the fixed cap 32, which has aspur part 33, Fig. 6,projecting horizontally inward, shaped to fill the space between the pawls 13 and 16 over the wheel 14, and has a top part 34, carrying the cars 35. This cap 32 is attached to the casing 30 by the screws 36 36, and it may be removed at any time by unscrewing them. The cover 37 is attached to the ears 35 of the cap by a rod running through its corresponding ears 38 39. It is made of proper shape to complete the casing of ratchet-wheel14 when resting down against the casing 30, and may be readily turned upward on its pivot to give access to that side of the ratchet-wheel. The ear 39 is, however, extended upward in the form of a finger, and has a shelf 40, Fig. 8, projecting outward from it underneath the handle in position to engage with the shipper-bar 17 and throw it out of its recess in strap 21 when the rod 42 is turned. This allows the spring 19 to throw over the shipper-bar and shift the belt 8 onto the loose pulley, which stops the loom. The operator can then manipulate the ratchet-wheel 14 as he may desire until the loom is started again; but after that he can get no access to the wheel without stopping the loom, as before described.

It is obvious that the form of the shaft and lever-connections between the cover 37 and the shipper-bar 17 may be somewhat modified without departing from the spirit of our invention.

What we claim as new and of our invention is 1. The combination, in a loom, of the pawlwheel 14, arranged to operate the take-up mechanism, the pawl-bar 11, connected to the driving-shaft and provided with the pawl 13, arranged to operate the wheel, and a casing surrounding said wheel and provided with a cover arranged to lift the pawl out of engagement with the wheel when raised to obtain access to the latter, substantially as described.

2. The combination, in a loom, of the pawlwheel 14, arranged to operate the take-up mechanism, the pawl-bar 11, connected to the driving-shaft and provided with the pawl 13, arranged to operate the wheel, a casing surrounding said wheel and provided with a cover arranged to be lifted to obtain access to the wheel, and suitable shaft and lever mechanism connecting the shipper-bar of the loom with said cover, arranged to ship the bar and stop the loom when the cover is lifted, substantially as described.

The combination, in a loom, of the pawlwheel 14,arranged to operate the take-up mechanism, the pawl-bar 11, con nected to the driving-shaft and provided with the pawl 13, ar-

ranged to operate the wheel, a casing surrounding said wheel and provided with a cover arranged to be lifted to obtain access to the wheel, a projection on the cover extending under thepawl-bar, and suitable shaft and lever mechanism connecting the shipper-bar of the loom with said cover, all arranged to both lift the pawl-bar and ship the shipperbar and stop theloom when the cover is lifted, substantially as described.

ORREN A. SAWYER. MOSES M. LAI'IUE. Witnesses:

GEORGE W. PooRn, HARRY A. BROWN.