US1622344A

US1622344A - Pattern mechanism for dobbies

Info

Publication number: US1622344A
Application number: US626529A
Authority: US
Inventors: Reynolds John
Original assignee: BUTLER MILL
Current assignee: BUTLER MILL
Priority date: 1923-03-21
Filing date: 1923-03-21
Publication date: 1927-03-29
Anticipated expiration: 1944-03-29

Description

i 1,622,344 March 1927- J, REYNOLPS a PATTERN MECHANISM FOR DOBBIES Fi d Mar 21, 1925 s Sheets-Sheet 1 March 29 1927.

J. REYNOLDS PATTERN MECHANISM FdR DOBBIES Filed March 21, 1923 3 Sheets-She et 2 March 29 1927.-

J. REYNOLDS PATTERN MECHANISM FOR DOBBIES FiIedMarQh 1925 5 Sheets-Sheet 3 Patented Mar. 29, 1927.

UNITED STATES JOHN REYNOLDS, OF NEW BEDFOED, MASSACHUSETTS, ASSIGNOR T0 BUTLER MTLL, OF

PATENT. OFFICE.

NEW BEDFORD, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

PATTERN MECHANISM FOR DOBBIES.

Application filed March 21, 1923.

My invention relates to a dobby loo-m attachment whereby more particularly bor dered fabrics such as handkerchiefs, napkins and the like may be woven. Heretofore weaving of this character has been done by the use of two cylinders each mounted on its own shaft operated from the same worm gear. This mechanism has resulted in what I have found to be an unnecessary duplication of parts taking considerable room on the loom. My present improvement has been devised to simplify construction and make a more compact and equally effective mechanism, and it consists in the mounting of the two cylinders on the same axis in such a way that while one of them is operating all the time the other may be operated from time to time as occasion may require. Thus two short pattern chains may be used, economizing space and cost of construction.

My invention will be understood by means of the drawings in which it is shown in its preferred form, only so much of a loom be ing shown as is necessary to make my invention understandable.

Figure 1' is a front elevation of a portion of a loom with my attachment mounted thereon.

Fig. 2 is a front elevation of the cylinders and parts connected therewith as mounted on the side of the loom.

Fig. 3 is an enlarged detail of the cylinder mechanism in plan, and

Fig. 4 a longitudinal section thereof taken at right angles to Fig. 3.

1 indicates the frame on which the parts are carried. 2 is a so-called jack which is pivoted as at 200 to the harness lever 3. There are a number of these jacks and harness levers as is usual. The top and bottom of the jacks normally engage the top girt 4 and the bottom girt 5 and each end of each jack carries hooks 6 and 7 as is usual, these hooks being adapted to engage a top knife 8 and bottom knife 9. These knives 8 and 9 are attached to and operated by the rocker 10. Each top hook is supported upon the rod 11 which is engaged at its lower end by a finger 12. Each bottom hook rests upon a finger 13,these fingers being pivoted on the Serial No. 628,529.

harness lever 3 being slotted and forked as at 16 to engage the rod 17.

My improvement comprises the cylinder mechanism shown especially in Figs. 2, 3 and 4. 18 is the shaft on which the other parts are mounted, this shaft being supported by hangers 19 below the frame;

On the shaft 18 is mounted a cylinder 20 of usual construction, that is, grooved to receive the elements of the chain 21. This chain is of the usual character and carries pins 22 as is usual, these 'pins being arranged to engage and operate the fingers 12 and 13.

It will be understood that there are a number of harness levers and operating mechanisms according to the size of the der is pinned to the shaft in such manner as to rotate with it. Free to turnonthe shaft 18 is a sleeve 25 which runs from a point near the flange 24 for some distance along the shaft carrying at its further end a member 34 of a clutch. To this sleeve is fastened to turn therewith a second cylinder 26 in all respects like the cylinder, 20 though varying therefrom in width if desired. Thesleeve 25 carries a worm gear 27 engaging with a worm 28 which is of the usual character and is mounted upon shaft 29. 30 is a plate of usual construction having a notch therein, there being pivoted to a lug on the plate a latch 31, the tip or engaging end of the latch being'adapted to fit'into notches 32 on the hub of the worm gear 27 This construction forms a clutch by which the position of the sleeve may be adjusted with relation to the worm gear, which is sometimes desirable. A spiral spring 33 surrounding the sleeve 25 keeps these parts normally in contact so that the worm gear 27 will cause the usual rotation of the sleeve 25 and cylinder 26.

'On the sleeve is also mounted one member 34 of a clutch the other member of which comprises a notched guide plate 35 pinned to the shaft 18 and a grooved collar 36 carrying a finger 361. The part 35 it will be noted is beyond the end of the sleeve 25and is pinned to the shaft 18, while the part 36 is free to rotate on the shaft 18. A collar 38 adjustably mounted on the shaft 18 keeps these parts in proper relation. 37 in the part 36 is adapted to receive a pin 39 attached to an arm 40 on one end of the spring-controlled rod 41, 42 being the spring which normally holds the rod 41 in such position as to keep the finger 361 out of engagement with the member 34. This rod is mounted in a yoke piece 43 adjustably attached by the bracket 44 to the frame 1. The rod 41 carries at its other end an arm 45 to which is attached by a spring connection 46 a strap 47 which passes over a pulley 48 mounted on the frame, the other end of this strap being suitably connected vith a hook 49 on the lower end of one of the herness levers 3, this construction being such that upon the movement of the upper end of the harness lever to the left by one of the knives (see Fig. 1) the hook 49 will be lifted and the strap 47 moved to turn the lever 45, this turning of the lever 45 throwing the part 36 into connection with the part 34. It will be seen therefore that upon movement given to the proper jack 2 and imparted through it to its harness lever 3 the part 36 will be thrown into connection with the part 34, these two parts forming a clutch. The sleeve .25 is always in motion and carries with it the part 34 so that its engagement with the part 36 will cause the part 36 to be rotated and hence the plate 35 and the shaft to whichthe plate is connected.

As in all looms of this character the movement of the harnesses is caused by motion given to the harness levers through the pins on the chain, the fingers and hooks, etc. In the present casechains are placed on both the

cylinders

26 and 20, these chains being arranged with the usual pegs in such manner as to produce the desired pattern, and one set of pegs on the chain running over cylinder 26 is arranged to operate theharness lever carrying the hook 49, so that at the desired time the shaft 18 will be connected to the sleeve 25 to turn with it. At other times only the sleeve and cylinder 26 are turned. Thus the cylinder 26 and'its chain are connected to the sleeve as required by the pattern. Thus for example the cylinder 20 may be provided with a chain to control the weave of a cross border or pattern, while the cylinder 26 will be provided with a chain to control the pattern of the side borders. The cylinder 26 on the sleeve 25 is always operating so that the side border is continuous. At the proper time the clutch 34, 36 is thrown automatically by means of the pegs and harness lever carrying the hook 49, etc. to connect the sleeve 25 with the shaft 18 and bothcylinders run so that the cross border as well as the side border is woven. Then the cross border is finished the clutch 34, 36 is thrown out and while the weaving of the side border is continued, the centre of the fabric is woven plain without figures.

I have shown a ratchet 51 mounted on the shaft 18 and engaged by a spring-controlled holding pawl 50 suitably mounted to prevent any rearward rotation or movement of the shaft.

To one skilled in the art it will be apparent that my device is an improvement upon other devices for a similar purpose, and also that my invention may be otherwise embodied.

lVhat I claim as my invention is 1. In a dobby mechanism adapted for weaving both a cross-wise pattern and a lengthwise pattern and having pattern chains, a shaft carrying a cylinder adapted to carry one of said chains and a sleeve concentric therewith adapted to carry another of said chains, means for continuously operating said sleeve, and means located onsaid shaft for temporarily and periodically connecting said shaft with said sleeve.

2. In a machine of the .kind described, a

shaft carrying a cylinder, a sleeve on said, shaft, said sleeve also carrying a cylinder,

means for continuously operating said sleeve, and means for temporarily connecting said shaft with said sleeve whereby said shaft and its cylinder may be operated as desired, said means comprising a clutch, onemember thereof being attached to said sleeve and the other to said shaft and means comprising, a harness lever whereby when said harness lever is operated the members of said clutch will be thrown into engagement.

3. In a machine of the kind. described, a shaft carrying a cylinder, a sleeve on said shaft, said sleeve also carrying a cylinder, means for continuously operating said sleeve, means for temporarily connecting said shaft with said sleeve whereby said shaft and its cylinder may be operated as desired, said means comprlsing a clutch, one member thereof being attached to said sleeve and the other to said shaft and means comprising a harness lever whereby when said harness lever is operated the members of said clutch will be thrown into engagement, and means for operating said harness lever comprising a chain carried by the cylinder on said sleeve.

4. In a machine of the kind described, a shaft carrying a cylinder, a sleeve on said shaft also carrying a cylinder, means for rotatingsaid sleeve, means whereby said sleeve may be connected to said shaft to rotate it comprising a clutch one member of which is attached to said sleeve and the other member slidably attached to said shaft, and means for causing the engagement of said clutch members comprising a harness lever and means for operating it and connections between said harness lever and the sliding member of said clutch, whereby when said harness lever is rocked said clutch will be engaged. i x

5. In a machine of theki'nd described, a shaft carrying a cylinder, a sleeve on sand shaft also carrying a cylinder, means for rotating said sleeve, means whereby said sleeve may be connected to said shaft to r0- tate it comprising a clutch one member of which is attached to said sleeve and the other member slidably attached to said shaft, and means for causing the engagement of said clutch members comprising a harness lever and means for operating it and connections between said harness lever and the sliding member of said clutch, whereby When said harness lever is rocked said clutch Will be engaged, said connections comprising a spring-controlled rockable rod carrying arms, one of said arms being connected to said movable clutch member and the other to said harness lever.

6. In a machine of the kind described, a shaft carrying a cylinder and asleeve also carrying a cylinder mounted on said shaft, means for rotating said sleeve, and means for connecting said sleeve and said shaft one of said members being connected tosaid harness lever to be operated thereby.

7 In a machine of the kind described, two cylinders each carrying a pattern chain, one cylinder being mounted on a shaft, the other cylinder being mounted concentrically'with said shaft, harness levers mounted to be engaged by said chains, means for rotating said last-named cylinder continuously, and means for rotating said first-named cylinder intermittent-ly whereby the chain on said continuously-rotating cylinder may be used to cause the Weavmg of a continuous border 4 pattern and the chain on said intermittentlyrotating cylinder may be utilized to cause the Weaving of the crosswise pattern.

JOHN REYNOLDS.