US3263708A

US3263708A - Textile shuttle blank

Info

Publication number: US3263708A
Application number: US423944A
Authority: US
Inventors: Phelps Horace Nathan
Original assignee: Formica Corp
Current assignee: TRU-TECH Inc A CORP OF DE; Formica Corp
Priority date: 1965-01-07
Filing date: 1965-01-07
Publication date: 1966-08-02
Anticipated expiration: 1983-08-02

Description

s- 2, 1966 H. N. PHELPS 3,263,708

TEXTILE SHUTTLE BLANK Filed Jan. 7, 1965 INVENTOR. Z HORACE NA THAN PHELPS BY I ATTORNEY United States Patent 3,263,708 ILE UTTLE LANK Horace Nathan Phelps, Cincinnati, Ohio, assignor to Formica Corporation, CincinnatLOlii h, a corporation of Delaware Filed Jan, 7, 1965, Ser. 0 423,944

2 Claims. (Cl. 139 -196) This application is a continuation-in-part of my earlier application having the Serial No. 235,745, filed November 6, 1962, entitled Process,. now [1.8. Patent 3,215,762, issued November 2, 1965. The aforementioned copending application'was in turn'a' divisional application of my parent application having the Serial No. 23,163., filed April 19, 1960, now US. Patent No. 3,089,522, issued May 14, 1963, entitled Textile Shuttle.

This invention relates to a noveltextile shuttle blank and to the process of preparing the same. Still further, this invention relates to a method of making a textile shuttle comprising bonding side members to end members so as to form a unitary structure with a bobbin cavity, wherein the side members of the textile shuttle blank are substantially uniplanar and the overall configuration of the shuttle blank from all directions gives the appearance of a rectangular figure. Still further this invention relates to textile shuttle blanks having side and end members bonded into a unitary structure wherein the side members are reinforced with a synthetic thermosetting resin-impregnated laminae and the shoulder areas are reinforced with a resin-impregnated layer of fabric rolled into the shape of a rod wherein said rod is ultimately flattened substantially into .the shape of a rectilinear parallelepiped in which the longer'axis of the'flatt'ened rod is parallel to the plane of theshuttle having'the bobbin opening but wherein the shorter axis of the flattened rod is perpendicular to the plane of a shuttle'having the bobbin opening and wherein the side wall layers of the impregnated fabric in said flattened, rolledrod are substantially parallel to the side walls of the shuttle blank ar'idelso wherein the top and bottom layers of the impregnated fabric in said flattened, rolled iodare substantially perpendicular to the side walls of the shuttle blank.

One of the objects of the present invention is to produce a textile shuttle blank by comparatively simple technique which produces a shuttle blank which has outstanding strength properties. A further object of the present invention is to produce a textile shuttle blank by a process which eliminates certain of the steps previously used in the manufacture of shuttle blanks thereby producing a product through the medium of a more economical process. These and other objects of the present invention will be discussed in greater detail hereinbelow.

Molded textile shuttles are well known in the art and have been manufactured in various modifications for a number of years. Illustrative of some of the earlier developments in this art are the US. Patents 1,805,090 and more recently 2,905,208 in addition to my aforementioned U.S. Patent 3,089,522. Prior to the manufacture of shuttles utilizing'reinforced laminae, textile shuttles were made from dogwood. All shuttles that were made from synthetic resin laminae or from dogwood are generally reinforced in their end tips with a metallic shank. For the purposes intended, these metallic shanks tend to protect the shuttle from the blow of impact and extend the life of the shuttle. These shuttles are, however, subjected to considerable stress, strain and impact during a textile weaving operation. It is known that these shuttles, in order to be acceptable commercially, must have considerable strength and endurance. Many of the problems in these directions have been solved but the solution of the problems has resulted often times in a complicated technique for the production of the shuttles "ice which complicated technique necessitates an increased cost in production because of the added steps required in order to produce such a serviceable shuttle. By: practic ing the processo'f the present invention one is able to produce a very serviceable textile shuttle blank from which a textile shuttle may be machined which has all 0f th es r ble t r utes w th. es t t r f h endurance and yet able to produce a shuttleblank and ultimately a shuttle therefrom through a very economical and simple operation.

In the process of the present invention use is made of a round rod of resin impregnated'fabric. In order to prepare such a rod, one simply impreg'nates the fabric with the selected resinous material and. rollsthe'irn'preghated fabric into the shape of a rod. Theresin coriv 'e ntionally used in such an operation would be a thermosetting resin such as a phenolic re sin of which man 'me known in the art. These rods are generally cylindrical in shape, although for certain purposes their end'cro'sssectional area could be in the shape of an ellips'erather than in the shape of a circle. The height of the cylindrical rod or its elliptical counterpart will depend on the thickness of the shuttle blank being prepared? These'rods are placed into the shuttlemold between the reinforcing s ide laminae and at eachof' the extremes'of the bobbin cavity. These rods, especially when elliptical in cross sectional area, extend from the bobbin cavity 'to the extreme end of the shuttle.' These rods'bf resin impregnated fabric are placed in the shuttle blank mold in such a way as to have the longer axis of the flattened rod'in a position parallel to the plane of the shuttle having the bobbin opening but wherein thesho'rter axis or the aaaeaa rod a perpendicular to the lari'df the sh me having the bobbinopening' and 'w'her'ein'the side will layers of the impregnated fabric in said flattened,'rolled rod are substantially hammer to the 'side walls of the shuttle blank and whereinthe top and bottom layers of the impregnated fabric in said flattened, r lled red are substantially perpendicular to the sidewalls 'ofthe shuttle blank." It can be seen from theconfiguration of these rolled rods that considerable" additional reinforcing strengthis' imparted to theultimate shuttle by'theuse or such a 'roll'ed 'rod. These rolled rods are forced into the body of'the' shuttleblahk' and become a part of its unitary structure. The layers of fabric are oriented in a position in which the longer axis of the flattened rod is parallel with the longer axis of the shuttle but in which the shorter axis of the flattened rod is perpendicular to the longer axis of the shuttle.

The side members of the shuttle are reinforced with a plurality of laminae which have been impregnated with a synthetic thermosetting resin. These resin impregnated laminae are well known in the art and it is deemed to be unnecessary to engage in prolonged delineation of the preparation of these laminae at this point. It should be sufficient to say that these wall members carry a thermosetting resin such as a B-stage phenolic resin which is readily converted under heat and pressure to a thermoset condition. It should be apparent that other thermosetting resins may be used for this purpose such as the urea formaldehyde resins, the melamine-formaldehyde resins, the epoxy resins and the like. Because of the cost factors the phenolic resins are preferred.

The metallic tip insertion can be accomplished after the machining steps by introducing the insert into the shuttle by use of a drilling and bonding technique.

Reference is made to the accompanying drawings which will enable one to understand the concept of the present invention more fully.

FIGURE 1 is a front elevational view of the end of a shuttle blank.

FIGURE 2 is a top view of a shuttle blank.

3 FIGURE 3 'is' an isometric view of the shuttle blank.

In FIG. 1, the layers of thermosetting resin-impregnated fabric are shown as 1 on each side of the flattened, rolled rods 2.

In FIG. 2, the lengthy strips of the fabric impregnated with the thermosetting synthetic resinous material are shown on each side of the shuttle blank as 1 and the rolled rod in the shoulder areas is shown as 2 whereas the bobbin cavity is shown as 3. From the above description of FIGURES 1 and 2 the isometric FIGURE 3 will be self-explanatory.

The rolled rods 2 can be prepared by rolling a thermosetting resin-impregnated fabric into a cylindrical rod to a precalculated weight. Alternatively the rods may be made by employing a mandrel in the rolling technique, however, it is more economical to use a rolling technique. The cylindrical rod is flattened out under heat and pressure to a substantially unitary structure having the appearance of a flattened rod or if desired can be converted into the shape of a rectilinear parallelopiped before being inserted into the mold. The curing of the resin is adjvanced slightly at this point but not to the thermoset stage.

In other words, the resin is still a thermosetting resin.

in a rolled ro'd be the same as that used in the flat sheets in the side wall members and for economic reasons it is preferred that the resin be a thermosetting phenolic resin. In order to keep the bobbin cavity open during the heat and pressure consolidation step to produce the thermoset resin-impregnated assembly, a metallic blank is inserted into the bobbin cavity which is removed after the heat and pressure consolidation step has been completed.

I claim:

1. A textile shuttle blank having side members and end, members having shoulder areas bonded into a unitary structure with a bobbin cavity having bobbin openings wherein said side members are synthetic thermosetting resin impregnated laminae and said shoulder areas are reinforced by a synthetic thermosetting resin impregnated layer of fabric rolled into the shape of a rod and flattened substantially into a rectangular figure in crosssectional appearance, said rod having its longer axis in a plane parallel to substantially the center of the plane of the shuttle having the bobbin opening and the shorter axis of the flattened rod is perpendicular to the plane of the shuttle having the bobbin opening, wherein the side wall layers of the impregnated fabric in said flattened, rolled rod are substantially parallel to the side walls of the shuttle blank and wherein the top and bottom layers of the impregnated fabric in said flattened rolled rod are substantially parallel to the tops and bottoms, respectively, of the side walls of the shuttle blank.

2. A textile shuttle blank having side members and end members having shoulder areas bonded into a unitary structure with a bobbin cavity having bobbin openings wherein said side members are synthetic thermosetting phenolic resin impregnated laminae and said shoulder areas are reinforced by a synthetic thermosetting phenolic resin impregnated layer of fabric rolled into the shape of a rod and flattened substantially into a rectangular figure in cross-sectional appearance, said rod having its longer axis in a plane parallel to substantially the center of the plane of the shuttle having the bobbin opening and the shorter axis of the flattened rod is perpendicular to the plane of the shuttle having the bobbin opening, wherein the side wall layers of the impregnated fabric in said flattened, rolled rod are substantially parallel to the side walls of the shuttle blank and wherein the top and bottom layers of the impregnated fabric in said flattened rolled rod are substantially parallel to the tops and bottoms, respectively, of the side walls of the shuttle blank.

References Cited by the Examiner UNITED STATES PATENTS 2,781,791 2/1957 Neely 139196 2,785,442 3/1957 Boggs 264258 2,824,581 2/1958 Heard 139-196 2,903,388 9/1959 Ionke et a1 264258 2,905,208 9/1959 Goreau 139196 3,089,522 5/1963 Phelps 139196 FOREIGN PATENTS 653,369 5/1951 Great Britain.

DONALD W. PARKER, Primary Examiner.

H. S. JAUDON, Assistant Examiner.

Claims

1. A TEXTILE SHUTTLE BLANK HAVING SIDE MEMBERS AND END MEMBERS HAVING SHOULDER AREAS BONDED INTO A UNITARY STRUCTURE WITH A BOBBIN CAVITY HAVING BOBBIN OPENINGS WHEREIN SAID SIDE MEMBERS ARE SYNTHETIC THERMOSETTING RESON IMPREGNATED LAMINAE AND SAID SHOULDER AREAS ARE REINFORCED BY A SYNTHETIC THERMOSETTING RESIN IMPREGNATED LAYER OF FABRIC ROLLED INTO THE SHAPE OF A ROD AND FLATTENED SUBSTANTIALLY INTO RECTANGULAR FIGURE IN CROSSSECTIONAL APPEARANCE, SAID ROD HAVING ITS LONGER AXIS IN A PLANE PARALLEL TO SUBSTANTIALLY THE CENTER OF THE PLANE OF THE SHUTTLE HAVING THE BOBBIN OPENING AND THE SHORTER AXIS OF THE FLATTENED ROD IS PERPENDICULAR TO THE PLANE OF THE SHUTTLE HAVING THE BOBBIN OPENING, WHEREIN THE SIDE WALL LAYERS OF THE IMPREGNATED FABRIC IN SAID FLATTENED, ROLLED ROD ARE SUBSTANTIALLY PARALLEL TO THE SIDE WALLS OF THE SHUTTLE BLANK AND WHEREIN THE TOP AND BOTTOM LAYERS OF THE IMPREGNATED FABRIC IN SAID FLATTENED ROLLED ROD ARE SUBSTANTIALLY PARALLEL TO THE TOPS AND BOTTOMS, RESPECTIVELY, OF THE SIDE WALLS OF THE SHUTTLE BLANK.