US2835276A - Loom frames - Google Patents

Description

J. O. HUNT LOOM FRAMES May 20, 1958 3 Sheets-Sheet 1 Filed March 51, 1955 gm my Z1 Miflffiif;

J. O. HUNT LOOM FRAMES May 20, 1958 3 Sheets-Sheet 2 Filed March 31, 1955 United States atent LOOM FRAMES John 0. Hunt, Greenville, S. (3.; Yvonne B. Hunt and Paul E. Bruchon, executors of the estate of John 0. Hunt, deceased, assignors to Yvonne B. Hunt, Greenville, S. C.

Application March 31, 1955, Serial No. 498,208

9 Claims. (Cl. 139-4) This invention relates to textile looms and is concerned more particularly with a novel loom frame structure for supporting the moving parts of a loom. The new structure is more rigid than those heretofore used and thus provides better support for the moving parts and reduces the likelihood of the parts getting out of proper adjustment. A loom, in which the new frame structure is employed, can, accordingly, be operated at higher speeds and with less idle time for adjustments and repairs than similar looms with the frame structures used up to the present.

The novel features of loom frame construction constituting the invention can be. employed in the building of new looms and can also be incorporated in certain looms now in use by the replacement of some parts and the addition of others. Such converted looms then afiorded all the advantages of new looms containing the new frame structure.

At the present time, the looms most widely used in this country have a frame structure comprising a pair of sides connected at their upper ends by an arch and a breast beam and near their lower ends by front and back girts, which-are, in turn, connected by middle girts. In such looms, the lay is operated by arms connected to cranks on a crank shaft rotating in hearings on the sides and a cam shaft is mounted below the crank shaft in bearings on the sides. The cam shaft carries a pick cam near 2,835,276 Patented May 20, 1958 "ice the surface of the floor, on which it rests. The sides may be generally of conventional form, so that standard loom parts may be mounted on them, but their lower ends are formed to make extended contact with the top of the longitudinal channels of the base and to be secured rigidly to those channels. The cross frame is preferably a plate having end sections offset from the plane ofthe center section and its ends extend substantially from top to bottom of the sides and are rigidly secured thereto. The cross frame is stiffened partly by the offsetting of the end sections and partly by the provision of top and bottom flanges and it carries bearings for the crank shaft and the cam shaft of the loom.

For a better understanding of the invention, reference may be made to the accompanying drawings, in which Fig. 1 is a view in side elevation with parts broken away of a loom having the new frame structure;

Fig. 2 is a sectional view on the line 22 of Fig. 1; and

Fig. 3 is a plan view, with parts broken away, of

a loom having the new frame structure.

each end lying inwardly from and near each cam shaft bearing and each pick cam engages a pick ball on a pick shaft mounted on the adjacent side and connected to one of the picker sticks. Each pick ball is raised abruptly by its cam whenever'the pick shaft carrying the ball is to operate its picker stick to throw the shuttle through the shed.

In looms of the construction described, the loom structure made up of the sides connected by the arch and breast beam and by the girts is far from rigid and is subject to severe vibration during operation. The moving parts of the loom are, accordingly, liable to become misaligned and to wear for that reason, so that the loom requires frequent adjustment and repair to keep it in proper operating condition. The harmful consequences arising from vibration are intensified as the vibration increases with an increase in speed of the loom, so that it is necessary to restrict the loom speed in order that the idle time of the loom, during which it is undergoing adjustment or repair, can be kept within reasonable bounds.

The present invention is directed to the provision of a novel frame structure supporting the moving parts of a loom, which is stronger and more rigid than the structure above described as now being in common use. The new structure includes a rigid base, a pair of sides resting on and secured to the base, and a cross frame resting on and secured to the base between the sides and having its ends engaging and secured to the sides. Preferably, the base is made of channel sections and is of H-shape and it may advantageously be supported on adjustable feet, so that its top may be level despite irregularities in The loom illustrated has a frame structure which includes a pair of sides 10, 11, a cross frame 12 extending between and connected to the sides, and a base 13, which supports and is connected to the sides and cross frame. The base is an integral casting of general H-form and it includes a pair of longitudinal members or legs 14a, 1411 connected by a cross bar 15, the legs and bar having the cross-sectional shape of an inverted channel. The base is preferably supported by means of bolts 16 threaded through the legs at the ends thereof and having lower ends 16a of ball form received in sockets in the tops of feet 17 resting on the floor or other supporting surface. With this arrangement, the top of the frame may be made level, although the supporting surface is uneven. Each of the legs 14a, 14b is formed with a pocket 18 in its top surface, in which is received the hub 19 of one of the loom swords 20. Each sword may be mounted in its pocket in any convenient manner for oscillation and the hub of each sword may be attached to a short shaft 21 supported in bearings 22 mounted in openings in the vertical walls of the leg and held in place by cap plates 23 secured to the outer faces of the leg.

The sides 10, 11 are generally of conventional construction and are plates with the usual top extensions, such as the extensions lltia supporting the sand roll 24 and the breast beam 25. At their rear ends, the sides are provided with means, such as bearings 26 with caps 27, for supporting the journals 28 of a warp beam 29.

The sides 10, 11 differ from conventional loom sides, in i that their lower ends are formed to make extended contact with the tops of the legs 14a, 14b of the base and are provided with flanges 30, which can be bolted to the base.

The cross frame 12 of the frame structure is a casting, the central part of which is a flat plate 31 having a plurality of cut-outs or openings 31a. At its top the plate is provided with a horizontal flange 32, which extends forwardly from the plate a greater distance than the Width of its projection toth-e rear and has its forward extension supported by ribs 33 integral with the plate and flange. The flange carries bearings 34 near its ends for a crank shaft 35, which is also supported by bearings in brackets 36 attached to the outer faces of the sides.

At each end, the frame 12 is formed with a section 37 integral with plate 31 and offset from the plate to the rear. Each end section 37 is connected to plate 31 by a longitudinal wall 33, which extends parallel to the adjacent side for most of its length, but has an inwardly offset section 39 at its upper end. The offsetting of sections 39 of the walls 33 provides additional space for the cranks 35a on the crank shaft 35.

The plate section 31 of the cross frame is provided with bearings 40 for a cam shaft 41, which is also supported in bearings in brackets 42 on the respective sides. The cam shaft carries a cam 43 at each end and each otfset end section 37 of the cross frame has an opening 37a, into which the adjacent cam projects. Similarly, each vertical wall 38 of the cross frame is cut away at 38a to provide space for the hub of the cam.

The cross frame is provided at its lower end throughout its length with a flange 44-, which rests upon the top of the cross bar 15 of the base and is bolted thereto. Also, the outer end of each offset end section 37 of the cross frame is formed with a la eral flange 3712, which lies in contact with and is bolted to the adjacent sides 10, 11.

With the construction described, it will be apparent that the base in the form of an integral casting of channel section provides a stiff level support for the loom. T he sides and cross frame have extended contact with the base at their lower ends and can be rigidly secured to the base by the bolts passing through their bottom flanges. The cross frame makes extended contact throughout its height with the sides and can be rigidly attached thereto by bolts. The frame structure is thus stiff and unyielding and provides a support for moving parts of the loom, which is substantially free from vibration.

In the frame illustrated, the leg 14a of the base is provided with an integral lateral extension 415, on which are mounted bearings 46 of a shaft 47 serving as a pivot for the treadles 4 8 of the harness mechanism of the loom. While the mounting of the treadles on such an extension is not necessary, the construction illustrated is desirable because of the accessibility of bearings 46 and shaft 47. In looms equipped with the dobby mechanism of my copending application, Serial No. 371,564, filed July 31, 1953, the extension 45 may provide the support, on which the dobby jacks are pivotally mounted.

I claim:

1. In a loom, the combination of a rigid base adapted to rest upon a supporting surface, a pair of sides resting on and secured to the base, and a cross frame of plate form seated directly on and secured to the base between 4: the sides, the ends of the cross frame engaging and being secured to the sides from the top of the base substantially to the tops of the sides.

2. in a loom, the combination of claim 1, in which the cross frame carries bearings between its upper and lower ends for the loom cam shaft and bearings on its upper end for the loom crank shaft.

3. In a loom, the combination of claim 2, in which the vertical sections of the cross frame at each end are offset from the central section of the cross frame to provide space for the cranks on the crank shaft.

4. in a loom, the combination of claim 3, in which the vertical end sections of the cross frame are provided with openings for receiving the cams on the cam shaft.

5. in a loom, the combination of claim 2, in which the cross frame carries a plurality of bearings for the cam shaft mounted on one vertical face and the respective sides carry bearings for the cam shaft on their outer surfaces.

6. In a loom, the combination of claim 2, in which the cross frame carries a plurality of bearings on its upper end for the crank shaft and the respective sides carry bearings for the crank shaft on their outer surfaces.

7. In a loom, the combination of claim 1, in which the cross frame is a plate having vertical end sections ofifset from the central section and the cross frame has a flat flange at its top.

8. In a loom, the combination of claim 1, in which the base includes side sections lying beneath and secured to the sides and a cross section lying beneath and secured to the cross frame.

9. in a loom, the combination of claim 8, in which the base is supported by a plurality of feet adjustably secured to the base.

References Qited in the file of this patent UNITED STATES PATENTS 1,811,705 Bergstrom et al. June 23, 1931 2,351,513 Hunt June 13, 1944 2,389,154 Kellogg et al. Nov. 20, 1945 2,705,022 Picanol Mar. 29, 1955 UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent Noe 2,8322% May 20, 1958 John 0, Hunt It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction and that the said Letters Patent should read as corrected below.

Column 3, lines 40, 41 and 42 strike out "resting on and secured to the base, and across frame of plate form seated directly and insert instead -5- of plate form seated directly on and secured to the base, and

a cross frame resting n Signed and sealed this 26th day of August 1958 (SEAL) Attest:

KARL H. AXLINE ROBERT c WATSON Attesting Off 1661 Commissioner of Patents

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