US1053307A - Head-motion for looms. - Google Patents

Description

H. F. LIVERMORE.

HEAD MOTION FOR LOOMS.

APPLICATION FILED 11111122. 1912.

v -Patented Feb. 18, 1913.

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H. F. LIVERMORE.

HEAD MOTION FOR LOOMS.

APPLICATION FILED 1111.22. 1912.

1,053,307. Patented Feb. 18, 1913.

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HOMER F. LIVERMORE, OF BROOKLINE, MASSACHUSETTS.

HEAD-MOTION FOR LOOMS.

Specification of Letters Patent.

Patented Feb. 18, 1913.

Application led January 22, 1912. Serial No. 672,576.

To all whom t may concern: y

Be it known that I, I-IoMEn F. LIVER- MoRE, a citizen of the United States, residing at Brookline, in the county of Norfolk and State of Massachusetts, have invented new and useful Improvements in Head-Motions for Looms, of which the following is a specification.

This invention relates to improvements in head motions for looms and is designed to overcome the troubles usually associated with devices of this character now in general use. The vibrator lever together with the connector is usually constructed of castiron and owing to the eXtreme thinness of the metal used which is necessitated by the limited amount of space into which a large number of the devices have to be placed, the life of said parts is very short, breakage occurring often and thereby rendering the device expensive and causing a great deal of annoyance.

The object of the invention is to provide a mechanism which may be constructed of suitable sheet material and which will be adapted to withstand stresses and strains naturally imposed upon devices of like character in a manner far superior to that of the devices now in general use..

The object is further to provide a mechanism having connections and pivots which are adapted to occupy a minimum amount of space and which will not work Vloose or break under the ordinary amount of work applied thereto.

The invention consists in the combination and arrangement of parts set forth in the following specification and particularly pointed out in the claims thereof.

Referring to the drawings: Figure 1 is a detail sectional view showing the essential working parts of a well-known type of head motion for looms embodying my invention and showing its connection with a loom harness in dotted lines and very much reduced in size. Fig. 2 is a detail plan section taken on line2-2of Fig. 1 showing a plurality of vibrators in their relative positions. Fig. Sis an enlarged detail section taken on line 3 3 of Fig. 1. Fig. 4 is a section part elevation taken on line 4 4 of Fig. 1. Figs. 5 to 8 inclusive are detail views of the parts shown in the section at the right of Fig. 4 with said parts as they would appear before assembling. Fig. 9 is a detail section of the stud embodied in the section at the left of Fig. 4. Fig. l0 is a detail elevation of of the arrow B with the connector broken` away to save space. Fig. 12 is a detail side view of the stops formed on the vibrator lever and adapted to engage the semicircular slot in the vibrator gear, said lever being shown broken away. Fig. 18 is a section taken on line 13-13 of Fig. 172. Fig. 14 is a detail sectiontaken on` line 14, 14 of Fig. 4 which illustrates a modified form of Y the pivot shown in Fig. 4.

Like numerals refer to like parts throughout the several views of the drawings.

In the drawings 10 and 11 represent a pair of cylinder gears of a well known type of head motion and which are adapted to be rotated in the direction ofthe arrows shown in connection therewith by means not shown in the drawing, but well known to those skilled in the art. tion of the class illustrated in said drawings is adapted to be used in connection with looms `having a large number of harnesses, as for instance, when weaving wo-olen or worsted fabrics some looms employ as manyas 36 harnesses, each of said harnesses requiringv a different operating mechanism. It will therefore be evident in view of this fact that it will be necessary to have a device which occupies a very small amount of space as otherwise a loom having such a large number of harnesses would require too much room. To this end I have employed a mechanism having a vibrator gear 12 formed of sheet material which is rotatably mounted upon a vibrator lever 13 also formed of sheet material and fulcrumed on a rod 14.

A vibrator gear 12 is located intermediate the cylinder gears 10 and 11 and is adapted to be moved alternately into and out of engagement with said cylinder gears by apattern chain 15 which is supported by a chain cylinder 16. The chain cylinder 16 is rotated by suitable mechanism not shown in the drawing whereby the risers 17 which are carried by said chain are brought into contact with the run 18.

It will be obvious that with a chain of the character shown in said drawings, the

rlhe head moportion of the lever 13 against which the risers 17 contact Will be subjected to a great deal of Wear. It has therefore been found necessary to provide a device commonly called a run or ,a chill, which is formed of hardened material and has a face thereon Wider than is the edge of the lever 13 and vusually riveted to said lever. This device is usually placed upon thesame side of the lever 13 as that upon Which the gear 12 is located. j Y.

Referring to Figs. 2, 4, 9 and 10, the vibra- '.tor gear 12 is pivotally mounted upon a tubular stud 19 having a body portion 20 Y and a smaller portion 21, said stud also hav- Vin g a flange-22 located upon t-he body porlticn'of said stud adjacent to the smaller portion 21.V rl`he smaller portion 21 and the flangeV 22' are adapted to project into correk sponding holes formed in the lever 13 and a plate 23 preferably identical in contour Wit-h ,the end of the lever 13 adjacent to said vi- Y brator gear is preferably permanently secured to said lever by an electric Welding 25 process, the inner facevof said plate engaging the outer cheek 24 ofthe flange 22, therebypreventing said stud from being removed from .the lever 13. To doubly secure said i stud and prevent rotation thereof the smaller portion 21 of the stud 19 is iattened at 25 and the hole into Which it projects correspondingly formed. The vibrator gear 12 Whichis mounted on said stud 19 is retained in its rotatable engagement therewith by a i tubular rivet 26 provided with an enlarged disk shaped head 27 which engages said gear Within a counterbore 28 Which is substan- Y tially equal indepth to the thickness of said disk shaped head, thus bringing the outer face of said head in alinement With the outer Isurface of said gear, and a rivet 29 having a flat head 30 Which preferably engages the countersunk end 31 of thestud 19 is securely riveted at its opposite end against the head of the tubular rivet 26. 1

Y The countersunk end 31 of the stud 19 is lpreferably scored as at 32 and upon the riveting of the rivet 29, the head 30 is forced against and int-o said scoring thereby preventing said rivet from rot-ating Within the stud 19 in case it should become slightly loosened by the constant Wear and vibration of the moving parts. Y

The gear 12 is provided with a semicircular slot 33 into which the projections 34 and 35 extend. These projections are pref- Y erably formed integral With the vibrator le- Y ver 13 or with the plate 23 Which is secured thereto and form as it were a cylindrical stud. The projection 34 engaging one end of said slot 33 and the projection 35 engaging the opposite end of said slot and thereby f limiting the rocking movement of said gear upon said lever 13 and causing it to stop at the desired point in order to insure the teeth on said gear properly meshing With the teeth on the cylindrical gears 10 and 11.

The vibrator gear 12 is in turn connected through a connector 36 to a harness jack 37 which is pivoted at 38 and is formed in the 70 shape of a bell crank lever having arms 39 and 40. These arms being connected, in a manner Well known tothose skilled in the art, to their respective harnesses.

The connector 36 is formed of malleable 75 material such as cold rolled steel and is pivotally connected at 41 to the gear 12 and at 42 separably and pivotally to the harness jack 37. The end 42 of said connector is preferably7 forked, one of the legs thereof 80 being formed integral with the body of said' connector and oifset at 43 While the other leg thereof is formed of the same material and is secured to the body of said connector preferably by an electric Welding process, whereupon a permanent connection is formed between said legs, this leg is also offset at 44 thereby bringing the center of the space between said legs in alinement With the face of the connector engaging the gear 12 or in other Words in alinement With the inner face of saidigear.

The opposite end 41 of the connector 36, when said connector is formed of cast-iron has usually. cast thereon a projection which forms the pivotal connection between said connection and said gear. A great deal of trouble is often caused by this connection breaking oit next to the connector, but with a steel connector of applicants type a stud of stronger and harder material may be employed. The stud 45 is shouldered and has a body ortion 46 pivotally engaging the gear 12 `see Figs. 1, 4, 5, 6, 7, 8 and 15) said stud also has a smaller portion 47 adapted to engage said connector and is provided with an annular recess 48 which is preferably disposed at a point adjacent to the juncture of said body and smaller portions and oblique to the medial axial line of said stud, and by reason of the oblique disposition of said recess it is possible to cut said recess much deeper than would be possible in case the same Were formed Within the smaller portion of said stud atright angles to said median axial line, as in this case the end of said smaller portion would be almost entirely cut'through. The connector 36 has formed thereon, after the smaller portion of said stud has been inserted Within the hole in said connector, a Bange 49, by swaging the material adjacent to said hole into the annular recess 48 formed in said stud and forms a second annular recess 50 in the outer face of the connector 36. By the peculiar angle of the flange 49 the metal of the connector 36, Which surrounds the smaller portion of the stud 45, is prevented from expanding or being forced apart by the strain upon said stud as Well as being prevented from moving longitudinally of said stud. With this combination it will be possible to employ a hardened stud and thus prolong the life of the connector.

A relative rotation between the lstud 45 and the connector 36 is prevented by the flattened face 51 on said stud, as the metal around said stud is formed to correspond with said flattened face by the swaging operation hereinbefore referred to. A rotatable engagement between said stud and the gear 12 is maintained by the tubular rivetJ 52 and rivet 53 which are preferably connected in the same manner as are the rivets 26 and 29 in the stud 19.

Referring to Figs. 1 and 2 it will be noted that the distance between the outer faces of the legs of the forked end 36 is equal to the distance between the outer face of the vibrator lever 13 and the op osite face of the vibrator gear 12 and furt ermore said distance is equal to the thickness of the lever 13 and boss 54, said boss being formed by electrically welding the hub 54 to the face of said lever upon which the plate 23 is welded.

It is essential that the center line of the harness jack and of the risers 17 should both be in alinement with a plane passing through the center of the hub 54, containing the face to which the run 18 is secured and also containing the inner face of the gear 12 which contacts with the face of the lever 13. A plane containing the face of the run 18 which engages the lever 13 substantially bisects the face of said run against which the risers 17 contact, therefore in order that the face on the lever 13 which engages said run shall be in alinement with the inner face of the gear 12, it will be necessary to offset the lever 13 as at 55 (see Fig. 3) this offset forming a recess 56 which contains the heads of the rivets 57. The pivotal connection hereinbefore described, as for instance, the stud 19 between said vibrator gear 12 and the vibrator lever 13 is a substantially permanent connection and is designed to wear as long, and possibly longer, than the other parts of the device. One `feature which is particularly necessary to the solidity and durability of said pivots is that the means for retaining said members in rotatable engagement, one with the other, are so constructed and so firmly riveted together that a relative movement therebetween will be impossible. As hereinbefore describedv this is prevented by forcing the head of the rivet 30 into the scorings 31 formed in the stud 19 by the upsetting of the opposite ends of the rivet 29 against the head of the rivet 26, provided said rivet 29 does not become loosened by the excessive strain of the moving parts and permit the head 30 from becoming disengaged from the scorings 31. To doubly insure the prevention of a relative movement between said members, I have shown in Fig. 14 as a modified form, a rivet 29 provided with corrugations 58, 58 which engage corresponding recesses in the interior of the tubular rivet 26 coperating with the corrugations or scorings 31, and preventing rotation between said rivet 29 and tubular rivet 26 and also between said rivets and the stud 19. In addition to Vthis the tubular rivet 26 may also be provided with projections 59 which will engage correspondin depressions formed within the stud 19. The same construction as just described isalso applicable to the lstud 45, tubular rivet 52 and rivet 53. If for any reason it is found necessary to disconnect said members, which would be the case if any of said members became injured, the same may be accomplished by drilling into the ends of the rivets 29 and 53 at the upset ends thereof and forcing the same from their positions within the tubular rivets26 and 52. In removing a vibrator mechanism from said head motion the vibrator lever 13 is removed from the rod 14 and the connector 36 separated from the arm 40 of the harness jack 37 whereupon the whole mechanism may be withdrawn.

Although I have shown and described my invention as being particularly adaptedto head motions for looms, it must be seen that it need not and should not be restricted eX- clusively to machines of this class.

Having thus described my invention what I claim and desire by Letters Patent to secure is:

1. A head motion for looms embodying, in its construction, a vibrator gear, a connector, a shouldered stud having a body portion adapted to rotatably engage one of the aforesaid members, said stud also having a smaller portion adapted to engage the other of said members and provided with an annular recess oblique to the median axial line of said stud, and disposed therein at a point adjacent to the junction of said body and smaller portions, a corresponding flange on said connector projecting into said re cess, and means adapted to retain said body portion and the member rotatably mounted thereon in rotatable engagement one with the other.

2. A head motion for looms embodying, in its construction, a vibrator gear, a connector formed of malleable material, a tubular stud'having a body portion adapted to rotatably engage one of the aforesaid members, said stud also having a smaller portion adapted to engage the other of said members and provided with an annular recess, oblique to t-he median axial line of said stud, and disposed therein at a point adjacent to the junction of said body and smaller portions, corresponding fiange formed on said second member projecting into said recess, a tubular rivet adapted to engage `the interior of said `tubular stud, andA a second rivet adaptedto secure saidtubular rivet within saidtubular stud wherebyy said body portion and said first member are r.retained in rotatable engagement one with the other.

3. A, head motion for looms embodying,

in its-construction, a vibrator gear, aconnector yformed of malleable material, a tubulari stud having a body portion adaptedto rotatably engage one of the aforesaid mem- ,to'engage the interior of said stud, a second ast-ud having a body portion adapted to rosof stud alsohaving a smaller portionofl irreg-v bers, said stud also having a smaller portion adapted to engage the other of said members and secured thereto, a tubular rivet adapted rivet adapted to fasten said stud and said tubular rivet together, and means on said second rivet adapted to engage recesses in said tubular stud, whereby a relative rotary movement between said tubular stud and said second rivet is prevented.`

4. A: head motion for looms having, in combination,4 a vibrator gear, a vibrator lever adapted to rotatably support said gear,

tatably engage one of the aforesaid members, said stud also having a smaller portion projecting into a corresponding hole inthe other of said members, a flange on ysaid body portion adjacent to said smaller portion adapted ato engage a recess in said other member, ar plate adapted to be permanently secured tosaid other member adjacenttof said stud, to engage said flange,

whereby said stud is locked Within said ver` adapted ato` rotatably .support said gear,-

astud having. a `body portion rotatably engagingbne of Ithefaltoresaid members, said ular vshape projecting int-o :aA correspond- 4inglyA shaped hole in the other of said menibers, aflange on said body portion adjacent to said smaller portion also engaging a hole in said other member, and a plate permanently-secured to said other member adjacent to said stud, and engaging said iange, whereby said stud. is looked within said hole.

6. A head motion for looms having, in combination, a vibrator gear, a vibrator leverk adapted to rotatably support lsaid gear, a tubular stud having a body portion rotatably engaging said gear, said stud also having a smaller portion projecting. into a corresponding hole in said lever, a flange on said body portion adjacent to said smaller portion projecting into a corresponding recess in said lever, a plate adapted to be permanently secured to said lever adjacent to said stud, and engage onev cheek of -said flange, whereby said stud is locked within said hole and a rivet adapted to be riveted inV said .tubular stud to retain said gear in rotatable engagement therewith.

7. A head motion for looms having, in

i'combination, a vibrator lever, a `iianged tubular stud, one end ofsaid `stud and said flange projecting. into a correspondingly shaped hole and recess respectively in said lever, a plate adapted to be secured to said lever, and engage the outer cheek of said flange, a vibrator gear rotatably mounted on the outer end of said stud, a tubular rivet adapted to engage the interior of said tubular stud, a rivet adapted to secure said tu-A bular rivet within said tubular stud and means adapted to lock said rivet and stud together, whereby a relative rotationv therebetween is prevented.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses. HOMER F. LIVERMORE.

Vitnesses:

FRANKLIN E. Low, SYDNEY E. TAFT.

Copies of this. patent may be obtained for five .cents each, by addressing the Commissioner of Patents.

pwashington, I). C."

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