US2661772A - Sword with removable protector rod brackets - Google Patents

Description

9 8, 1953 J. B. GOODGAME 2,661,772

SWORD WITH REMOVABLE PROTECTOR ROD BRACKETS Filed Dec. 19, 1952 3 Sheets-Esau l 4 e4 INVENTOR:

Ja E 500044;

BY mwzz,

ATTORNEYS.

J. B. GOODGAME SWORD WITH REMOVABLE PROTECTOR ROD BRACKETS Dec. 8, 1953 3 Sheets-Sheet 2 Filed Dec. 19, 1952 INVENTOR: J55 5 awal/z.

ATTORNEYS 1953 J. B. GOODGAME ,66

SWORD WITH REMOVABLE PROTECTOR ROD BRACKETS Filed Dec". 19, 1952 5 Sheets-Sheet 3 mvmmm: J5)? 5 50404142.

ATTORNEYS.

Patented Dec. 8, 1953 UNITED STATEti orFlcE SWORD WITH REMOVABLE PROTECTOR ROD BRACKETS Jesse B. Goodgame, Charlotte, N. 0., assignor to Precision Gear and Machine Company, Charlotte, N. 0., a corporation of North Carolina Application December 19, 1952, Serial No. 326,953

swords having removable protector rod support brackets thereon.

Conventional swords associated with most looms each has a pair of spaced ears disposed immediately rearward of the lay and through which a pivot pin extends on which the front end of a pitman arm is pivotally mounted. Also, heretofore, each of the swords has had a-protector rod support bearing portion integral therewith which was substantially L-shaped in cross-section and the vertical leg of which engaged the rear surface of the lay and the horizontal leg of which engaged the lower surface of the lay for supporting said lay. Also, the horizontal leg of each of the protector rod bearing portions has had a projection extending downwardly therefrom,

or said horizontal leg has been in the form of such a projection, in which the conventional pr'o tector rod was cscillatably supported.

As is well known, the protector rod has daggers on opposite ends thereof which are raised in the course of each forward or beatup stroke of the lay when a shuttle is properly boxed in either of the shuttle boxes. On the other hand, upon failure of the shuttle to be properly boxed in either of the shuttle boxes, in the course of a beat-up stroke of the lay, the daggers remain in a lowered position and then engage frogs which restrain forward movement of the lay and also actuate conventional means for stopping the loom.

Now, heretofore, relative pivotal movement has been caused between the swords and the pitman arm pivot shafts and/or the front ends of the pitnian arms and the pitman arm pivot shafts.

Also, the protector rod has oscillated, either in.

direct contact with the projections extending downwardly from the protector rod support brackets or in friction bearings disposed in said projections, thus resulting in considerable wear of the pitman arm pivot shafts and the protector rod as well as the portions of the swords and/or pitman arms and the projections on the protector rod supporting brackets with which they were in engagement.

It is therefore an object of this invention to provide anti-friction bearings in the ears of the swords for pivotally supporting the pitrnan arm pivot shaft and to also provide anti-friction hearings in the protector rod brackets for oscillatably supporting the protector rod.

More especially, it isoan object of this invention to provide swords especially constructed to facilitate adaptation thereof for the reception of I have provided swords each including a shank having laterally spaced ears thereon and a protector rod support bracket detachably secured thereto and extending outwardly therefrom whereby the protector rod support bracket may be removed from the sword shank to facilitate machining the openings in the ears of the swords for reception of anti-friction bearings, since it is extremely diflicult to accurately machine the openings for said anti-friction bearings in the ears of the swords when the corresponding plO- tector rod support brackets are cast integral with the shanks of the swords.

lVforeover, by constructing the protector rod support brackets as parts separate from the sword shanks, this facilitates the machining of" It would be practically impossible to accurately machine the openings in the projections extending downwardly from the horizontal legs of the protector rod brackets if the protector rod brackets were integral parts of the sword shanks, since said projections are spaced substantially from the innermost surfaces of the swords and are spaced inwardly substantially from the outermost or end portions of the brackets, with the result that the cutting and abrading tools employed in machining the openings in said projections would have to be so long that the working ends thereof could not be sufliciently rigidly supported in order to maintain the diameters of said openings within the relatively close tolerances necessary toaccommodate anti-friction bearings.

In any event, by providing a detachable protector rod support bracket on each of the swords, many of the operations necessary in the manufacture of the sword shanks and the protector rod brackets are greatly simplified, since the sword shanks and protector rod brackets are not as cumbersome to handle when manufactured separately; they are more easily and more accurately molded and, since the brackets are not, integral parts of the sword shanks, this obviates the possibility of the proe te'ctor rod brackets becoming broken away from the swords due to handling in the process of their manufacture, as is so often the case in handling thereon of relatively small cross-sectional area.

protector rod support.

Figure 2 is an enlarged fragmentary rear ele vation, with parts in section, taken substantially along the line 2-2 in Figure 1 Figure 3 is a fragmentary vertical sectional view of the loom taken substantially along-the:

line 3-3 in Figure 1;

Figure 4 is an enlarged fragmentary vertical sectional view taken substantially along the line 4-4 in Figure 2;

Figure 5 is an enlarged fragmentary sectional plan View taken substantially along the line 5--5 in Figure 4;

Figure 6 is an enlarged fragmentary isometric view showing-theupper end of one .of the sword shanks with the. corresponding protector rod bracket fixed thereon;

Figure Tis a view similarto- Figure 6, but showing the sword shank andcorrespondingprotector rod bracket-at the opposite side of the loom;

Figured is an enlargedlfragmentary vertical sectional view taken substantially alon the line B-$ in Figure 2.

Referring more specifically tothe drawings, thenumerals liiand ll indicate the right-hand and left-hand frame members of a loom. The

front upper ends of the side framermembers. l and H have opposite ends of a conventional breast beam 12 suitably secured-thereto and the medialportions of the side frame members l9 and H have opposite ends of a suitable girt-or spreader spreader I3 may be of :any desired or conventional construction and is-preferablyof-the type disclosed in my co-pcnding application entitled Adjustable Spreader for Looms, 326,951, filed December '19, 1952.

Spaced below the spreader or girt l3 is a-conventional driven crank shaft It on-which pick cam-s l-are suitably secured, onlyone of which is shown in Figure 3-. ThepickcamS-H each engage a pick ball l5 for. controlling the movement of the conventional picker sticks, not

shown. Of course, the side fram members I0 and H support the usual warp beam as from whence warp yarns pass upwardly-above the-girt or spreader I3, through suitable "harnesses, not shown, and through a reed 2i where-thefabric is formed. The fabric istaken up by a conventional sand roll 22 rotatably supported-in the side frame members if! and l and which usually has a. cloth take-up mechanism associated therewith, not shown.

The reed 2| is disposed between a reed capz and a lay 25 which are supported by improvedswords 3t and 7 36' which are especially constructed according to the present invention and will be later described in detail. The lower ends of the swords and 30' are fixed on a conventional rocket shaft 3%, oscillatably mounted in the side frame members! 0 and l I.

Front end cufi members 31 and 3t are pivotally connected to the respective swords 30 and 30, in a manner to be later described, these cuff members 3] and 3! being conventional parts of pitman arms 32 and 32'. The rear ends of the 13' suitably secured thereto. This- Serial No.-

pitman arms 32 and 32 are pivotally connected, as at 33 and 33, to respective crank throws 3d and 34 of a crankshaft broadly designated at 35.

The crankshaft 35 may be of any desired or conventional construction, but is preferably of the typeldisclosed in my co-pending application entitled Multisection Crankshaft for Looms, Serial No. 326,952, filed December 19, 1952. Accordingly, the medial portion of the crankshaft 35 "is rotatably mounted in a pair of inboard bearing'blocks 36 and 35' suitably secured to the upper'surface of the girt or spreader i3 and the outer ends of the crankshaft 35 are rotatably mounted in outboard bearing blocks 37 and 31'.

As:is well known, most automatic looms have an automatic bobbin transfer mechanism and 0pposite ends of the lay 25 have shuttle boxes 46 and iil' thereon provided with stationary box fronts M and M and stationary longitudinally slottedbox backs 42 and 52 in the slots of which conventional box binders are positioned and which are adapted to be engaged by a shuttle S as it is alternately boxed in the shuttle boxes and 40. Only one of said box binders is partially shown and is indicated at 33 in Figures 1, 2and 8;

It willbe observed in Figure 8 that the front portion of the lay 25 is cut away at 44, in theusual manner, beneaththe shuttle box 59' and thiscutaway portion M is partially covered or closedvby ashuttle box bottom 'plateliii provided with a longitudinally extending slot d6 therein through which the exhausted bobbins are discharged and thennpassthrough the opening 54. Disposed in theopening it and extending downwardly substantially below the lay 25 is an inclinedbobbin chute or picker stick guide 47 which is conventional and is only described since one of the improved protector rod support brackets has means thereon for supporting the bobbin chute or picker stick guide 5 5, as will be later described.

The loom is also equipped with a protector rod 5!} which is oscillatably supported adjacent the swords 3B and 38 in an improved manner, to be later described, and is also supported in an intermediate or center protector rod bracket 5i which preferably has an anti-friction bearing therein for oscillatably supporting the rod 52. This cen ter protector rod bracket or bearing block 5! is suitably secured, as by a screw 52, to the medial portion of the lay 25. The bracket or bearing block 5i has one end of a torsion spring 53 suitably connected thereto which surrounds the adjacent portion of the protector rod 55 and the other end of which is fixed to a collar 55 fixedly mounted on the protector rod 50.

Opposite ends of the protector rod 53 have outwardly and rearwardly bent or turned portions56 and 5B integral therewith on which the lower ends of respective dagger fingers 51 and 51 are suitably secured. These dagger fingers 51 and. 51' extend upwardly and engage the corresponding box binders, only one or" which is partially shown and is indicated at 43', normally tending to move the binders inwardly or for wardly by virtue of the torsion spring 53.

Opposite ends of the vprotector rod each has a dagger fixed thereon and extending downwardly and forwardly therefrom, only one of said daggers beingshown and indicated at 60 in Figures 2, 3 andVS The torsion spring 53 normally urges .each of the daggers, such as dagger 60 downwardly into the horizontal plane of a protuberance 5| on a corresponding frog62' carried by the corresponding side'framemenibers it and H. As is well known, most "loomshave two frogs thereon, as above described, one of which is termed a live frog and the other of which is termed a dead frog and the live frog is effective in stopping the loom upon the pro tuberance thereon being engaged by the corre' sponding dagger to limit forward movement of the lay 25. Since the structure and'function of the live frog and dead frog associated with looms is well known, further illustration and description thereof is deemed unnecessary.

All of the parts heretofore described, other than the swords 3i! and 39, are conventional and the present invention is concerned with-improvements embodied in the swords 3.9 and 39. Since both of the swords 39 and 36) are substantially the same, only the sword 36 will be described in detail and like parts associated with the sword 39' will bear the same reference characters with the prime notation added.

As heretofore stated, the primary object of the invention is to provide means facilitating the use of antifriction bearings in association with the swords for supporting the front ends of the pitman arms and for oscillatably supporting the protector rod 59. The sword 38 comprises a substantially vertical shank 54 which has laterally spaced, rearwardly projecting inner and outer cars 65 and '55 integral therewith and is provided with an outer fiat vertical surface 6! which is flush with the external surface of the ear 6t and forms a shoulder 68 on the shank against which a vertical end flange portion it of an improved protector rod support bracket, broadly designated at H, is adapted to be detachably secured, as by screws '52 (Figures 2, 4 5 and 6).

Heretofore, a bracket similar to the bracket 71 has been cast or molded integral with the shank Ml of the sword 35. The improved protector rod support bracket H is made so as to be removed from the shank Stto facilitate accurately machining the ears 65 and 66 as well as a bearing holding projection 13 whichprojects forwardly from the lower portion of the flange portion it! of the improved protector rod support bracket H.

It will be observed in Figures 5 and 6 that the ears 55 and 66 each has a relatively large bore i5 therein, these bores it being axially alined and the inner or proximal ends of the bores 15 being restricted to form shoulders 15 against which the outer races of respective anti-friction bearings 83 are positioned. The anti-friction bearings 88 are illustrated as ball hearings in Figure 5, however, it is to be understood that roller bearings may be employed in lieu of the ball bearings, if desired. The ball bearings 8i) are preferably held in the bores 15 in the ears E5 and fit by a light'pressed fit.

The reduced opposite ends 8! of a pitman arm front pivot shaft 82 fit in the inner races of the anti-friction bearings Bil and the front end por-' tion 3i of the corresponding pitman' arm 32 is mounted on the medial portion of the shaft 82 between the ears E35 and 66, and is held thereon by means of a set screw 83. 1

it is thus seen that there is no frictional contact between the reduced ends 8! of the pitman arm pivot shaft 82 and the ears 65 and 66, as has heretofore been the case, and, thus, the pitman arms 32 and 32 operate quieter than pitman arms heretofore employed and the ears 65,156, 65' and 66 are not worn as a result of oscillation of the pivot shafts 82 and 82 therein.

It will be observed in Figures 2, 4, 5, 6 and 7 that the protector rod brackets H and H are provided with respective vertical web portions 84 and 84 which extend outwardly and whose front faces are substantially flush with the front faces of the respective sword shanks 6t and 64 and'are adapted to be positioned against the rear surface of the lay 25. The respective bearing holding prejections 13 and 13' extend forwardly from the lower portions of the respective flanges 10 and 18 and are substantially circular and I provided withrespective substantially flat planar upper surfaces 35 and 85. Thus, the lay 25 is supported upon the flat surfaces 85 and 85' of the respective bearing holding projections 13 and 73 and the rear surface of the lay 25 is held against the web portions 84 and 84' by respective bolts or screws 86 and 3% (Figure 2). bolts 86 and 86 are preferably of the shouldered type and, accordingly, the web portions 84 and 84' of the respective brackets II and H are provided with respective rectangular holes 81 and 81' through which the shoulder bolts extend for securing the lay to the brackets H and l i Since the bores or openings in the ears'tt, 63, 55 and 66' are necessarily disposed in close proximity to the rear surfaces of the sword shanks 84 and 54, it is preferable that the flanges it and if! of the respective brackets H and ii have substantially semi-circular notches or cavities 8i! and st therein which are disposed in axial alinement with the bores or openings 15 and E5 in the cars 65 and 66'. These notches 9i and 96 are also preferably of slightly greater radius than the radii of the bores f5 and '15 in order to facilitate ready removal of the anti friction bearings 8e and 39 from the ears 65 and tit without detaching the bracket ii and ii from the shanks 6G and 84' of the swords 3e and 39'', if desired.

The bearing holding projections 73 and 13' have respective axiallyalined bores BI and 9| therein and each of the bores 9| and 91 has the outer race of. an anti-friction bearing 82 mounted therein (Figures 4 and 5). These anti-friction bearings 92 are preferably of the self-alining type as shown in Figure 5 and the protector rod 56 slidably penetrates the inner races of the anti-friction bearings 92.

The inner race of each of the anti -friction bearings 52 preferably has a'tapered end portion indicated at 93 for reception of a correspondingly tapered portion of a collar Q15 which is fixed on the protector rod to by means of set screw 95. The anti-friction bearings 82 may be either roller hearings or ball bearings and are also preferably sealed bearings, between the inher and outer races of which a suitable lubricant has been provided by the manufacturer to thereby obviate the necessity of providing means for lubricating the bearings 92.

Now, it will be observed in Figure 7 that the web portion 84' of bracket 71 is substantially longer than the web portion 34 of bracket ii and the outer portion of the web portion 8 3' has a horizontal flange portion 9'! projecting forwardly fronrthelower edge thereof which is disposed at substantially the'sarne level as the fiat sur face 85 011 the upper edge of the bearing holding projection ii-l; The lower surface of this flange portion 97' has a boss Hi9 integral therewith which is provided with a bore it! for reception of a bolt .182. for securing the inclined bobbin,

These chute or picker stick guide 2" to the front surface of the bracket It is thus seen that I have provided an improved combination lay sword and protector rod bracket wherein the protector rod bracket is formed separately from the shank of the sword to facilitate accurate machining of the bores 9i and 8f in the bearing holding portions 73 and T3 of the respective brackets ll and H and to also facilitate ease of handling the swords 36 and 3Q and machining the bores '15 and 75 in the respective pairs of cars '35, 88 and 65', 66 so that anti-friction bearings may be used for supporting the protector rod 53'; and for supporting he pitrnan arm front end pivot shafts 82 and r In the drawings and specification there has been set forth a preferred embodiment of the invention and, although specific terms are employed, they are used in a generic and descriptive sense only, and not for purposes of limitation, the scope of he invention being defined in the claims.

I claim:

1. in a loom having a lay and a pair of pit man arms, a pivot shaft on the front end of each pitman arm, a protector rod extending beneath, and substantially parallel to, said lay, and swords for supporting the lay each having a pair of spaced ears thereon between which the front ends of said pitman arms are adapted to fit; the combination of a flat outer surface on each of said swords adjacent the corresponding car, a detachable protector rod bracket removably secured to said flat surface on each sword, each protector rod bracket having a bearing holding projection thereon projecting in a direction away from the corresponding ear of the sword and disposed beneath said lay for supporting the corresponding portion of the lay, each of said ears and the bearing holding projections having a bore therein, and an anti-friction bearing mounted in each of said bores for oscillatably supporting said protector rod and said pitma-n arm pivot shaft.

2. In a loom having a lay, pitman arms for driving the lay and a protector rod extending beneath, and substantially parallel to, said lay; improved swords for supporting the lay, each sword comprising a shank having a pair of laterally spaced ears thereon, an anti-friction bearing in each of said ears, a pivot shaft mounted in the bearings and spanning the distance between each pair of ears and on which the front end of the corresponding pitman arm is adapted to be secured, a protector rod bracket removably secured to the outer surface of each of said shanks, each protector rod bracket comprising a substantially vertical web portion, means securing the lay to the web portion of each bracket, a bearing holding projection extending forwardly from the lower portion of each of the web portions and beneath said lay, and an anti-friction bearing mounted in said bearing holding projection on each of the protector rod brackets for oscillatably supporting said protector rod.

3. An improved combination sword and protector rod bracket for supporting the opposite end portions of a lay of a loom and for also supporting the protector rod of the loom, said loom also having a pair of pitman arms thereon for imparting oscillation to said lay; each of said improved combination swords and protector rod brackets comprising a sword shank having a pair of laterally spaced ears thereon between which th front end of the corresponding pitma arm is adapted to fit, an anti-friction bearing mounted in each of said ears, a pivot shaft oscillatably mounted in the bearings in each of said pairs of ears and on which the corresponding pitman arm is adapted to be fixedly mounted, a bracket removably secured to the outer surface of each sword shank adjacent the corresponding pair of ears, an outwardly extending substantially vertical web portion integral with each bracket and having means for securing the lay thereto, each bracket also having a projection extending forwardly therefrom beneath said lay and being disposed at the end of said bracket adjacent the correspondingsword shank, and an anti-friction bearing mounted in said projection on each of the brackets for oscillatably supporting said protector rod.

4. In a loom having oscillatable swords and a lay disposed against the front surfaces of the swords; the combination of a detachable bracket fixed to the outer surface of each sword and having an outwardly projecting substantially vertical web portion thereon whose front surface is substantially flush with the front surface of the sword, means to secure the lay to said web portion, and a forwardly extending projection on each bracket upon which the lay is adapted to rest.

5. An improved combination sword and protector rod bracket for supporting the opposite end portions of a lay of a loom and for also supporting the protector rod of the loom, said loom also having a pair of pitman arms thereon for imparting oscillation to said lay and an inclined bobbin chute disposed at at least one end of the lay; each of said improved combination swords and protector rod brackets comprising a sword shank having a pair of laterally spaced ears thereon between which the front end of the correspondin pitman arm is adapted to fit, an antifriction bearing mounted in each of said ears, a pivot shaft oscillatably mounted in the bearings in each of said pairs of ears and on which the corresponding pitman arm is adapted to be fixedly mounted, a bracket removably secured to the outer surface of each sword shank adjacent the corresponding pair of ears, an outwardly extending substantially vertical web portion integral with each bracket and having means for securing the lay thereto, each bracket also having a projection extending forwardly therefrom beneath said lay and being disposed at the end of said bracket adjacent the corresponding sword shank, an anti-friction bearing mounted in said projection on each of the brackets for oscillatably supporting said protector rod, at least one of said brackets also having a forwardly projecting flange portionintegral with the web portion thereof, and a boss portion depending from said last-named flange portion and having a bore therein for reception of a bolt for securing the inclined bobbin chute to the bracket.

6. In a loom having a lay, a pitman arm for driving the lay and a protector rod extending beneath, and substantially parallel to, said lay; improved swords for supporting the lay, each sword comprising a shank having a pair of laterally spaced ears thereon, an anti-friction bearing in each of said cars, a pivot shaft mounted in the bearings and spannin the distance between each pair of ears and on which the front end of the corresponding pitman arm is adapted to be secured, a protector rod bracket for each shank, anend flange on each bracket, means to removably secure said end flange against the outer surface of the corresponding shank-and overlapping one of the ears of the shank, said flange having an opening therethrough coinciding with, and of greater size than, the corresponding' anti-friction bearing, each protector rod bracket also comprising a substantially vertical web portion, means securing the lay to each of the web portions, a bearing holding projection extending forwardly from the lower portion of each of the Web portions and beneath said lay, and an anti-friction bearing mounted in References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,400,318 Roy Dec. 13, 1921 2,489,849 Bahan Nov. 29, 1949'

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