US2483857A

US2483857A - Harness frame for looms

Info

Publication number: US2483857A
Application number: US730787A
Authority: US
Inventors: Richard G Turner
Original assignee: Crompton and Knowles Corp
Current assignee: Crompton and Knowles Corp
Priority date: 1946-03-01
Filing date: 1947-02-25
Publication date: 1949-10-04
Anticipated expiration: 1966-10-04

Description

Oct. 4, 1949. R. G. TURNER HARNESS FRAME FOR LOOMS Original Filed March 1, 1946 HE. E

FIlifi 31 IO 32 VII/011110114:

INVENTOR mar/4R0 6. TURNER l8 I a I I 3 39 ATTORNEY Patented Oct. 4, 1949 UNITED STATES PATENT .OFFI-CE. t 2,483,857 V HARNESS FRAME FOR LooMs 7 Richard G. Turner, Wrcestcr; Mass.,lassignor to 3 Crompton -& Knowles Loom Works; Worcester, Mass.,. a corporation of Massachusetts Original application March 1,1946QSerial No; 651,073. Divided and this application February 25,1947. Serial No. 730,787 a 3 Claims. (oi.139. 92

This; is. a division of my=copending application Serial No. 651,073, filed March 1, 1946, now abandoned. I

This invention relates-to. improvements in harnessframes for looms and itis the general object ofthe invention to provide a-strong lightweight harness frame of simple. construction.

Loom harness. frames. customarily employ top and bottom heddle barswhich are connected to both sidebars of the harness.- frames. Because of this construction it is-necessary to disconnect atleast one side. of the heddlebars to fit them with thewarpheddles. It is. an important object of my present. inventionto. provide a harness frame with. resilient,heddlebarswhich are free at one end so-thattheymay be sprungslightly When heddles are beingfitted totor strung along them I It is another. object .of my present invention to provide a harness framemade with continuous side-,top. and bottom elements and having the. bottom element. welded. or soldered tov a. bearing by which the. harness frame can be reoiprocated;

A'furtherobject-of the invention is to provide an improved detachable connection between the aforesaid bearing and adriving link.

With these and other objects in view which will appear as the description proceeds, my invention resides in the combination and arrangement of parts hereinafter described-and set. forth.

In the accompanying drawings, wherein a convenient embodiment of my invention is set forth,

Fig. 1 is a front elevation of a harness frame made according to my present invention,

Fig. 2 is a vertical section" on line 2-2 of .1. r

Fig. 3 is an enlarged front elevation of the upper left-hand part-of-Fig. 1,

Fig. 4 is a horizontal section on line 44 of Fig. 3,

Fig. 5 is a horizontal section on line 5-5 of Fig. 1, V

Fig. 6 is an enlarged horizontal section on line 6-6 of Fig. 1,

Fig. 7 is an enlarged vertical section on line 1-1, Fig. 2, the link being omitted, and

Fig. 8 is a vertical section on line 88, Fig. '7.

The harness frame forming the subject matter.

of my present invention is intended for use more particularly on narrow unit type looms which weave a, single tape or the like. Such looms have narrow warps and ordinarily run at high speeds. The harness frames are only a few inches wide and generally move vertically in guides not shown fixed to some part of the loom, and power is ap- 2 pliedeither to the top or the bottom of the frames to cause. Vertical reciprocation thereof in, the shedforming operations. of the loom.

Referringmore particularly to Figs. 1 and 2, the harness frame formingthe subject matter of this invention may include a continuousouter frame-or member ldhavingright and left side bars .or elements- II and l2. which are integral with top. and bottom cross bars-or. elements I3 I and M, respectively. Thefram H]v is preferably madeof a-length. of. tubular. metal theends of which are indicated-. at. I5..and. I6. A. bearing l1, see Figs. '7 and 8, hasa concave groove. i8 into which the endsv l5...and. l6-fit andthelatter. are secured, as .by..si1ver-solder, ,orotherwise, to the bearing- The latter thereforealignsthe: ends I 5 and l Bandunitesthem to form the bottom .bar

Y element l4.

The harness frame is provided witha. plurality of heddles 20.having warp eyes 21 andhavingupper and lower heddIeLbarsIQts 22.. and 2.3,.r,espectively. The sides of the tops1ots-22may be .bent in opposite directions as indicated at .25 in Fig. 3,

' and the sides of the bottom slots 231may also be bent as indicated .at 2,6. These bends at the ends of the heddlesare of the customary form .and are for the purpose of preventing, the heddle eyes from gettingtoo close to each other for proper relationship between the fhfiddles and warp threads, one. of which is indicated at W in Fig. 2.

The. heddles are mounted on top andbottom parallel heddle bars Y30 and 3!. which extend respectively through the slots. 22 and 23 and between side bars II and I2. These heddle barsas shown in Fig., l have their right ends 32 rigidly connected to the right sidebar element. II', but their left ends 33 are free and terminate close to the left sidebar element l2. The heddlebarsare without taking a permanent set, and derive their entire support from side element l l.

During manufacture of the harness frame the right ends of the heddle bars 30 and 3| are held firmly against the bar I l and attached to the latter as by silver solder. I do not wish to be limited to this particular method of attaching the heddle bars to the side element II but have found in practice that it is quite satisfactory. After the heddle bars have been attached as described they lie preferably within the outline of the closed hollow harness frame. The free or left ends 3 3 of the heddle bars can then be sprung or deflected from the full line to the dotted line position as indicated in Fig. 5 for fitting of the required number of heddles 20. Because of its resilience each heddle bar springs back to its normal position when released after stringing of the heddles. The heddle bars are of suflicient width so that they have a substantial amount of attachment to the side bar or element II and can withstand the tension of the warp threads when the harness frame moves to form top or bottom sheds in the loom.

As shown in Figs. 1, 2 and 8 the bearing I] is connected to a link having a relatively thick side sheet metal member '36 to whichis welded a stud 3'! fitting into a hole 38 in bearing IT. The other side of link 35 is made with a thin retaining sheet metal spring member 39 extending along the bearing IT and acting to hold stud 3'! in I a hole 38. The

members

36 and 39 are riveted together as at 40. By springing member 39 away from hearing I! the stud can be removed if desired.

From the foregoing it will be seen that I have provided a simple form of harness frame in which the heddle bars are securely attached to one of the side elements of the harness frame member ID but are free at their opposite ends to be sprung slightly for the stringing thereon of heddles. It will also be noted with respect to Fig. 3 that the bends at the opposite sides of the slot 22 prevent entry of the upper part of the heddle into the narrow space between the left side bar I2 and the adjacent free end 33 of the heddle bar 30. It will be understood that similar conditions exist with respect to the lower heddle bar 3| and those parts of the heddle at opposite sides of slot 23. Also, the bearing I! aligns the end parts 15 and I6 and forms them into the bottom bar or element l4. Furthermore, the spring member 39 permits ready fitting of stud 31 into the hole 38 and removal therefrom. The harness frame proper, comprising the side and top and bottom member and bearing is not claimed herein but is claimed in the parent application of which this is a division.

Having thus described my invention it will be seen that changes and modifications may be made therein by thoseskilled in the art without departing from the spirit and scope of the invention and I do not wish to be limited to the details herein disclosed, but what I claim is:

1. In a loom harness, a closed hollow metallic frame having spaced vertical side elements. and a resilient metallic heddle bar permanently and rigidly connected at one end thereof to one of said elements on a part thereof facing the other side element and extending toward a part of the other side element facing said one element and having a free end adjacent to said other element, said heddle bar being located entirely within the 4 hollow metallic frame and supported entirely from said one side element, said free end being normally positioned to prevent the stringing of heddles on the heddle bar, and said free end due to the resilience of the heddle bar being deflectable froma normal position thereof to permit the stringingof heddles thereon.

a 2. In a loom harness, a flat metallic frame hav- AI ing spaced side elements, a resilient metallic heddle bar having one end thereof permanently connected to one of said elements and having the other end thereof terminating at a point adjacent to theother' element and defining a narrow space between said other element and the other end of said heddle bar, and a heddle on said heddle bar adjacent to said other element and having a part thereof bent laterally for engagement with said other element for the purpose of spacing the heddle from said narrow space, said heddle bar normally lying in the-plane of the frame, and saidother end of the heddle bar being deflectable out of the plane of the frame to permit the stringing of heddles on said heddle bar. v 1

3. In a loom harness a frame made of metallic tubing circular in transverse section and having spaced side elements a metallic resilient heddle bar one end of which is securely fastened to one of said elements and the other end of which is free and extends toward but terminates adjacent to the other element, and a heddle on said heddle bar adjacent to said other side element having parts thereof bent laterally to engage said other side element to space the heddle therefrom, said other end of the heddle bar being normally positioned to prevent application of a hedd1e to the heddle bar or removal of a heddle from the heddle bar, and said other end due to the resilience of the heddle bar being deflectable from the normal position thereof to permit the stringing of a heddle on said heddlebar and removal of a heddle from said heddle bar by movement of part of. the heddle between the rounded part of saidother element and said other end of theheddle bar.

RICHARD G. TURNER.

REFERENCES CITED 'The following references are of record in the file of this patent:

UNITED STATES PATENTS I Date