US2602471A - Selvage motion - Google Patents

Description

y 1952 P. w. MORRISON SELVAGE MOTION 3 Sheets-Sheet 2 Filed Oct. 26, 1949 P/r/ci- W MORE/SON, INVENTOR ATTORNEY July 8, 1952 P. w. MORRISON SELVAGE MOTION 3 Sheets-Sheet 3 Filed Oct. 26, 1949 I RICE "(Mow/s0, INVENTQR ATTORNEY Patented July 8, 1952 UNITED STATES PATENT OFFICE I 2,602,471 r 5 r w SELVAGE Mo'rIoN n 7 Price WlMorriscn; ch ater, sjo.

' 3 a 5 A Application October 26, 1949, Serial No. 123,740

Thisinvention relates to an improvement in aselvage motion for looms and the primary object of this invention is to reduce the number of parts normally employed in selvage motions which have heretofore been in use so as to considerably reduce the cost of manufacture and, in view of the lesser number of parts employed in the present'invention, the improved selvage motion may be more rapidly assembled and adjusted. than has heretofore been possible thus decreasing the cost of set-up time considerably. 'Heretofore, selvage motions, such as the #10 selvage motion manufactured by Draper Corporation of Hopedale, Massachusetts, and of the type shown in U. S. Patent No. 913,095 of Febv ruary 23, 1909, have had a driving means for the selvage harnesses, which are disposed adjacent opposed sides of the loom separate from they main shed-forming means associated with conventional looms, comprising a selvage cam mounted on the conventional cam shaft-of the loom having-a selvage cam follower guide extending downwardly therefrom, the lower end of which has been pivotally connected intermediate the ends of an oscillatable treadle bar, one end of which was oscillatably connected to the loomand the other end of which had a selvage treadle stud collar thereon to which the lower ends of the selvage harness straps extending from the lower a ends of adjacent selvage harnesses have been connected.

,One of the harness straps extended beneath aniidler pulley disposed in a lower horizontal plane than the selvage treadle stud collar'and then extended upwardlyand connected to one side of the stud collar while the other of the; harnessjstraps extended downwardlyandwas connected to another side of the selvage treadle stud collar and, upon oscillationbeing transmitted to the .selvage treadle bar heretofore described, the selvage harnesses were caused. tow move in opposite directions relative to each other in a shed-forming operation. g

It is seen that many parts were employed heretofore in a selvage motion of the type described and it is therefore another object of this inven- 1 Claim. (01; 139-55 tion to provide an improved driving means for the selvage motion of a, loom comprising a bracket adapted to be secured to the adjacent conventional intermediate forwardly and rearwardly extending girt of the loom and having an idlerpulleyrmounted thereon beneath which sin-intermediate portion of the lower harness strap passes; --The; opposed ends: of thefzlower harness?strapextendupwardly and "each of these' also taken substantially along responding harnesses and the last-named strap extends upwardly and passes over a similar idler pulley connected to the arch of the loom. An arm is oscillatably mounted at the arch of the loom intermediate its ends and has one end thereof connected to one of the reaches of the upper harness strap and its end remote from the end connected to therupper harness strap has a connecting rod connected thereto which extends downwarly, and the lower end being connected to the conventional type of selvage cam follower guide which, in this instance, is moved degrees from the position in which it is normally disposed on the loom. Upon vertical movement of the connecting rod the other reach of the upper harness strap is caused to move in the opposite direction as oscillatory motion is transmitted to the arm adjacent the arch of the loom to thereby transmit vertical movement in opposite directions to the selvage harnesses.

Some of the objects of the invention having been stated, other objects will appear as the description proceeds when taken in connection I view through a loom showing the improved harness'selvage motion applied thereto and with many of the parts of the loom being shown schematically; T

Figure 2 is an elevation with parts in section 9 looking at the front of the salvage motion and the line 2--2 in Figure 1; 1 V j 1 "Figure 3 is an enlarged vertical sectional view taken substantially along the line 3-3 in Figure 2 and showing the conventional selvage cam in solid lines and showing the conventional selvage camfollower guide in dot-dash lines;

Figure 4. is an enlarged fragmentary elevation'taken substantially along the line 4-4 in Figure 1 and showing the manner in which the idler pulley, around which the lower harness strap passesis mounted;

Figure 5 is an enlarged isometric view showing the manner in which the upper end of the selvage motion is'mounted but omitting the conventional arch of the loom for purposes ofclarity;

v FigureG'is an enlarged vertical sectional view taken substantially along the line 6-8 in'Figu're" 5 andshowing the" manner in which the upper endoffthe'connecting rod is connected 'to the 1 operating lever of the improved selvage motion.

Referring more specifically to the drawings, the numerals l and II indicate the ri ht-hand and left-hand side frame members, respectively, of the loom and which are spanned at their lower portions by transverse front and back girts l3 and M, respectively, secured to the loom side frame members I!) and l l as by bolts l5. Conventional .forwardly and rearwardly extending right-hand and left-hand middle 'girts l6 and 16', respectively, are secured at their front and rear ends, as by bolts [1, to the front and. back girts l3 and M, respectively.

These intermediate girts l and [6 support the lower ends of conventional vertically dis-- posed intermediate girts 20 and 20', respectively, the upper ends of which are connected in a conventional manner to a transverse upper girt member '22 the ends of which are secured, as by screws 23, to the proximate surfaces of the vertically disposed 'sideframe members It! and H. The side frame members H3 and H are connected at their upper front ends by a conventional breast beam 28. A conventional arch 2'5 is supported on and secured to the proximate surfaces of the loom side frame members and H, as by screws 21, and this arch may support, in the usual manner, the main harness frames, not shown, but through which warp yarns 30 passas they extend from a conventional whip roll 3| through a conventional reed '32 where they are woven into cloth 33 which passes over a conventional sand roll 34, after which the cloth is wound up in a conventional manner, not shown. The warp yarns 30 extend over the whip roll 3| from a warp beam 35 supported by the loom side frame members l0 and H.

A conventional reed 32 is mounted in a conventional manner between a lay $6 and a'reed cap '31 which are supported on the upper ends of conventional swords MLonly one of which is shown. The swords 40 are connected to the front ends of pitman rods M, the rear ends of which are connected, in -a conventional manner, to a" conventional crank shaft '42 rotatably mounted in bearing blocks 43 supported on the loom side frame members Hi and H. The lower ends of the swords 40 are fixedly mounted on a conventional oscillatable rocker shaft 44.

Referring to Figure- 2 it will be observed" that the loom side frame members I U and U have conventional bearing blocks 45 thereon-which support opposed ends of a conventional pick cam shaft 4 5' having the usual pick earns 47 thereon. The cam shaft 46 and the crank shaft 42 are driven in a manner well known to those familiar withthe art. The 'parts heretofore described are-conventionalparts of the'loom and it is withthese parts that the present invention is associated.

In Figure 2 there is shown a right-ha'ndsel vage motion broadlydesignated at 50 and'a lefthand selvage motion broadly designated at50,' and since both the right-hand and left-hand selvage motions 50 and- 50T are identicahexcept being opposite hand, the selvage motion 50 will be described and the same reference characters will apply to like parts associated with both of the selvage motions 50 and 5D" with the reference characters associated with the left-hand selvage motion bearing the prime notation.

Now, referring to'Figures 1,2, 5 and fibthere is showna substantially geshaped upper selvage roll bearing bracket v5! which is VeryJSiniiIa rLto the. ;conventional..;type-. of "selvage roll: bearing .35

bracket and has a forwardly projecting portion 52 integral therewith on which a selvage roll bearing block '53 is adjustably secured as by set screw 54. This selvage roll bearing block 53 has a stub shaft 55 projecting laterally therefrom on which an upper selvage roll 56 is rotatably mounted. An upper selvage harness strap 51 passes over the upper salvage roll 56 and has front and rear reaches 57a and 5113-, respectively, depending therefrom and to which, the upper ends of a conventional type of selvage harnesses 60 and (ii are connected, as by hook members 62, the reaches 510. and 51b of the upper harness strap 51 being provided with suitable holes 63 for reception of the hooks 82.

In operation, the shed formed by the outermost few of the warp yarns 30, at the selvage of the cloth to be woven, pass through and are controlled by the selvage harnesses 6B and GI andflfifl' and 6!. The lower ends of the selvage harnesses 60 and BI (Figure 1) are connected, as by hook members 64, tothe upper ends-of front and rear reaches 65a and 65b of a bottom selvage harness strap 65 (Figures 1, 2 and 4).

The bottom selvage harness strap 65 passes beneath a lower selvage roll 6'! rotatablymounted on a stub shaft 10 and prevented from having endwise movement thereon by suitable collars 1 I and 12 adjustably secured on the stub shaft 10 as by set screws 13. 'I'he'stub shaft 10" is adjustably mounted in a block 15 as by a setscrew.

16. This block 15 maybe an integral part of a lower selvage roll bracket 11 which extends downwardly and inwardly, atan angle, and is secured, by any suitable means such as a bolt 89, to the vertical wall of the forwardly and rearwardly extending intermediate girt 16 (Figuresl and 2).

It will be observed in Figure .1 that f.the.sub-. stantially C-shaped upper selvage rollbearing: bracket 5| is secured to the arch 26 of the 100m. by any suitable means such as a set screw 26m.

Driving means for improved selvage motion The upper selvage roll bearing bracket 5! (Figures 1 and 5)has a downwardly projecting ear integral therewith on which a forwardlyand rearwardly extending control lev'er 9l' is 05- cillatably mounted asat 92. The control lever 9| has longitudinally-extending adjustment slots- 93 and 94 at opposed ends thereof and a harness actuating stud '96 is adjustably mounted in the front adjustment slot 93 of the controlllever 9!.

This harness actuating stud 96 extends laterally between the front'and rear reaches 51a and 51b,-

respectively, of the upper harness strap 51 and the frontrach 51a is secured to the harness actuating stud 9B.-- i

ed upperend of a connecting rod 104 adjustably imbedded therein and being secured-in position by'a suitable lock nut- I05.

The connecting'rod 14 extends downwardly,

in Figures 1 and .2, from the cuff member "13 and its lower end slidably penetrates the split upper end of a conventional type of selvage cam follower guidealflB. and in which the lower end of the .connectingvrod lMisclampingly'secured as byset screws I01 (Figures 1, 2Jand-3); The lowervend ofthe. selvagecam follower guide I06 is forked as at .llO andstraddles thepicktdhf as by-a screw 91- adjusted I shaft 46. The outer vertical surface of the se vage cam follower guide I06 has rotatably mounted thereon, as at III, a cam follower H2 which, due to its peculiar shape, is caused to alternately traverse grooves H3 and H4 in a selvage face cam H5 (Figure 3). The selvage face cam H5 is fixedly mounted on the cam shaft 46 and is thereby caused to rotate with the same. In order to hold the selvage cam follower guide I06 in sliding engagement with the inner vertical face of the selvage face cam H5, a suitable split collar I20 is clampingly secured on the shaft 4 5, as by screws I2I (Figure 2) and also slidably engages the inner surface of the selvage cam follower guide I06.

The purpose of the two grooves H3 and H4 (Figure 3) in the face cam H5 is to provide means whereby the selvage harnesses 60 and 6| are caused to reverse their positions for changing the shed of the selvage warp yarns 30, upon alternate revolutions of the pick cam shaft 40, causing two picks to pass between the warp yarns 30 at the selvage of the cloth upon each change in the shed of the warp yarns caused by the movement of the selvage harnesses 60 and 6|. In other words, while the cam follower H2 is traversing the outer cam groove H3, the front harness 60 will be lowered and the rear harness GI will be raised by virtue of the connecting rod I04 at the upper end of the selvage cam follower guide I06 and the oscillatable control lever SI. Now, upon completion of a revolution, the cam follower H2 is then led into the smaller of the cam grooves H4 to thus raise the frontselvage harness 60 while lowering the rear selvage harness GI (Figure 1) and in which position the harnesses 60 and SI will remain until the completion of another revolution after which the cam follower H2 then leads into cam groove H3 to repeat the operation as heretofore stated. It is thus seen that the selvage harnesses 60 and 6| will move in opposite directions far enough to change the shed of the warp yarns 30 carried thereby only upon alternate strokes of the selvage cam follower guide I06 and, incidentally, upon alternate beat-up strokes of the lay 36.

It is thus seen that I have provided an improved selvage motion for looms and have also provided an improved driving means therefor which is simple and economical in its construction and may be easily assembled and applied to the loom with a minimum-of set-up time.

In the drawings and specification there has been setforth a preferred embodiment of the invention, and although specific terms are employed, they are used in a descriptive and generic sense only and not for purposes of limitation, the scope of the invention being defined in the claim.

I claim:

An improvement'in a selvage attachment for a loom having a cam shaft, side frame'members and front and rear girts spanning the side frame members and also having intermediate girts extachment for forming a variable shed at each selvage comprising at least one first selvage harness and at least one second selvage harness, said loom also having an upper selvage roll bracket carried by the arch of the loom and a lower selvage roll bracket supported by the intermediate girts of the loom, and havingupper and lower selvage rolls carried by the upper and lower selvage roll brackets, respectively, said attachment also having an upper and a lower harness strap adapted to pass above and beneath the upper and lower selvage rolls, respectively, so that opposed ends of said upper and lower harness straps extend toward one another and means connecting the upper and lower ends of the first harness to the proximate ends of the upper and the lower harness straps extending from one side of the upper and lower selvage rolls, respectively, said attachment also having means connecting the second selvage harness with the proximate ends of the upper and lower harness straps extending from the other side of the selvage rolls, said attachment also having a forwardly and rearwardly extending control lever oscillatably mounted on said upper selva e roll bracket and having one of its ends extending adjacent the downwardly extending portions of the upper harness strap, said attachment also having means connecting one of the downwardly extending portions of the upper harness strap to said control lever, said improvement comprising a connecting rod connected to the other end of the control lever, a forked follower guide connected to the lower end of the connecting rod and having its lower end fitting on opposed sides of the cam shaft, a selvage face cam fixed on the cam shaft and having inner and outer grooves in one side thereof and merging with each other at one point, a crescent-shaped member pivoted on the follower guide and having movement alternately in said grooves to move the selvage harnesses a greater amount upon alternate revolutions of the cam shaft than on the other revolutions.

PRICE W. MORRISON.

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

UNITED STATES PATENTS Number Name Date 769,921 Roper Sept. 13, 1904 913,095 Belevance Feb. 23, 1909 v FOREIGN PATENTS Number Country Date 299 Great Britain of 1899

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