US431263A

US431263A - George f

Info

Publication number: US431263A
Authority: US
Publication date: 1890-07-01
Anticipated expiration: 1907-07-01

Description

2 Sheets-Sheet 1.

(No Model.)

G. P. HUTGHINS. HARNESS MECHANISM FOR LOOMS.

Patented July 1, 1890.

I Snow M307; Geo 7:7 H i-cit}: s,

q vitmc one o (No Model.) 2 Sheets-Sheet 2., G. F. HUTGI-IINS.

HARNESS MEGHANISM FORLOOMSQ No. 431,263. Patented July I 1890.

i 12 K 2, [81 i I W I II I I I 8 9 MEAT 21 I aw linux20 4o 1 represents the loom side, 2 the arches, and

UNITED STATES PATE T OFFICE.

GEORGE F. HUTCI'IIN S, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO THE KNOWLES LOOM WORKS, OF SAME PLACE.

HARNESS MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Application filed September 4, 1889 To all whom it may concern.-

Be it known that I, GEORGE F. HUTOHINS, a citizen of the United States, residing at WVorcester, in the county of Vorcester and State of Massachusetts, have invented certain new and useful Improvements in Harness Mechanism for Looms; and I do hereby declare that the following is a full, clear, and exact description thereof, which, in connec- IO tion with the drawings, making a part of this specification, will enable others skilled in the art to which my invention belongs to make and use the same.

My invention relates to looms, and more particularly to theharness mechanism for looms; and the object of my invention is to provide a system of metallic strapping by which I overcome-the breaking and stretching of the leather or fibrous strapping ordinarily used, and by which I am enabled to work the harness mechanism more freely and to get the requisite strength while putting a greater number of harness-frames in a given harness-space than can be done with the ordinary leather or fibrous strapping.

Referring to the drawings, Figure 1 is an elevation, partly in section, of a portion of a loom, showing the application of my invention. Fig. 2 is an elevation, and Fig 3 a plan, both enlarged, of the top levers and adj ust able frames. Figs. 4 and 5 are details, enlarged, of the adjustable connections to tops of harness-frames Figs. 6 and 7 are details, enlarged, of the connections to the bottom of the harness-frames; and Figs. 8 and 9 are enlarged details of the adjusting-link in the chain-strappin g used in some cases under the loom.

In the accompanying drawings, in Fig. 1,

3 and 4 the harness-levers ordinary way.

Extending across the arches are two

rods

6 and 7, on which are pivoted rectangular frames consisting of sides 8, joined by

bars

10 and 11 to corresponding sides (not shown) across the arch space. (Not shown.) On the pivoted at 5 in the ends of the rectangular frames, opposite the Patent No. 431,263, dated July 1, 1890;

. Serial No 322,946. (No model.)

pivot-points thereof, are cars 12, which project outward over the arches to receive the adjusting-screws 13, by which that end of the frame may be raised or lowered. The rectangular frames swing on their

pivotsthe rods

6 and 7. Said frames are held in place at the desired elevation by check-nuts 14. Extending across the rectangular frames are rods 15 and 16, on which are pivoted a series of armed levers 17 and 18, one on each rod, for each harness-frame used, which armed le- Vers take the place of the sheaves ordinarily 6o employed.

To prevent the levers 17 and 18 from springing out of line in the series and catching upon each other, they are preferably provided with segmental ribs 17 and 18, the center of which is at the pivot-center of the levers, and which ribs fill the spaces in the series. The ribs are made long enough, so that they overlap each other with the levers at their maximum travel. To prevent the whole series of levers from tipping or spreading out of line, the guides 8' are set in the sides or ends of the rectangular frames and fastened adjustably in proper position by a set-screw 89 (see Fig. 3 on the shank of the guide 8.

The arms 19 of the levers 17 are connected to the harness-levers 3 by wires 20 and short links 21, the links making the movement freer and rendering the connections more easily hooked up or unhooked. The links 21 are made thinner in the direction of the thickness of the harness-frames than loops could be made in the wires 20, as shown byFigs. 6 and 7, which enables these connections to be made thinner, and consequently allows a greater number of harness-frames to be put in in a given space than is commonly done. Arms 22 of levers 17 are connected by wires 22' and short links 22" to arms 23 of levers 18, so that

arms

21 and 25, respectively, of 0 levers 17 and 18 are simultaneously lifted or depressed by the same movement of their harness-levers.

Arms

24 and 25 are connected to the harness-

frames

26 and 27 by means of short links 28, wires 29, and screw-links 30.

The screw-links 30 are for the purpose of ad justing the position and tension of the strapping, and are shown in enlarged detail in Figs. 4 and 5.

The hooks 31, screwed in the usual manner into the harness-frames, are, for convenience in hooking up or unhooking for adjustment, made rather shallow, and to prevent the links from jumping off the hooks by the overthrow andrecoil of the frames in action the tongue 32 is pivoted between the sides of the link in such a manner that it must be pushed aside to allow the link to become unhooked. This construction allows the links to be made thin enough to correspond to short links 21.

The bottom sides of the harness-frames are fitted with the usual yokes 33, which are connected to the frames and to the downward wires 34 by short links 21. (See Figs. 6 and 7.)

There are shown in the drawings two ways of connecting the downward wires 34 and the long wires 35 with the lower ends of the harness-levers-to wit, a connection passing over two pulleys or sheaves and a lever'both of which are regarded as in effect equivalents, they both having capacity for changing in the proper manner the direction of motion of the parts connected with the under sides of the harness-frames.

The connection represented by full lines is one frequently required by the prescribed space under the loom, and consists of the

usual sheaves

36 and 37, pivoted, respectively, on a stand 38, supported by the center girt 39, and stand 40, bolted to the loom-side. Passing over the

sheaves

36 and 37 are sections 41 of metallic chain, through the first link of which is riveted a projection or link 42, as shown in Figs. 8 and 9. The intermediate horizontal wires 43 under the loom. and the vertical wires 35 from the harness-levers are hooked into one of the series of holes 42' in link 42, the length of the connections being adjusted by hooking into different holes The construction just de-;

in the links 42. scribed allows these connections to be made strength, to correspond with short links 21.

Fig. 1, is the preferable way of connecting the bow-wires or yokes 33 and long wires 35 when admissible under the loom, and consists of a long lever 44, pivoted at a central point 45 on a stand 46 on the loom-frame.

The inner end of the lever 44 is connected to wire 34 by a short link corresponding to 44 is a weight 47, sufficient to counterbalance the weight of the harness-frame.

The method of connection just described is applicable to looms strapped in the usual way over sheaves at the top of the loom, and

adds to the steadiness of running, particularly at high speeds and on patterns that demand the occasional shifting in the same direction of a large number of harnesses at once.

For convenience in putting in the series of armed levers 17 and 18, and in getting out a single lever anywhere in the series in case of breakage, the

levers

17 and 18 and 44 and rectangular frames 8 all have their pivothubs slotted out on one side the size of the pivot-rod. The slots are cut in the direction of the resultant pull by their connections, and for safety the levers are confined by small rods 48, passing through holes in the pivotsupports and resting on the outside of the lever-hubs. In levers 1'7 and 18 the arms are carried around the hubs to allow space for the rods 48, and in lever 44 the rod works in a slot: (See Fig. 1.) In either case the rod 48 is withdrawn whenever it is desired to remove one of the levers.

In the case of the rectangularframes extending across the loom no confining-rod is necessary, as the weight of the connections suspended from said frames is sufficient to keep them in place. The rectangular frames are used, instead of supporting the pivot-rods 15 and 16 on adj usting-screws directly in the arches of the loom, for the sake of conven- 5 ience, in swinging the lever-pivot up to allow the confining-rod 48 to be withdrawn in taking the levers out.

By the use of metallic strapping, above described, the harness-frames and heddles once lined up to the proper position remain there, and there is no stretching or giving out of the strapping, as is the case when leather or fibrous strapping is used, and, further, by reason of the greater strength of the metallic strapping a greater number of harness-frames can be used within a given and necessarily limited space than can be used with the ordinary leather or other strapping.

The metallic strapping can be used with the ordinary forms of connections between small enough, while giving the requisite the harness-frames and the harness-levers,

1 passing over sheaves, in which case the chain The connectlon represented by dotted lines,

and adjusting-link, Figs. 8 and 9, would be used over the top sheaves, and the screwlinks 30 could,if desired,be replaced by short links 21.

By using the armed-lever connections above I described and dispensing with the sheaves ordinarily used I obtain a direct pull in all directions, and avoid the friction incident to chafing of the metallic straps or chainson the sheaves.

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

1. In harness mechanism for looms, the combination, with the harness-levers and the harness-frames, of the links, wires, armed levers, screw-adjusting links, chain-sections,'

adjusting-links, and a connection between ing-links, and a connection between said said chain-sections, substantiallyas described, and for the purpose stated.

2. In harness mechanism for looms, the

5 combination, with harness-levers and harnessframes, of links, wires, armed levers, adj ustable frames and means for adjusting said frames, screw-links, chain-sections, adjustchain-sections, substantially as shown and I0 described.

GEORGE F. HUTCI-IINS.

Vitnesses:

JOHN C. DEWEY, C. S. SHORT.