US2083337A - Bobbin - Google Patents

Description

H. C. MACK June 8, 1937.

BOBBIN Filed Feb. 14. 1956 nuvENToia m. m m f n Patented June 8, 1937 BOBBIN Harry C. Mack, Allentown, 12a., assignor to Ther Allentown Bobbin Works,- Inc., Allentown, Pa., a corporation of Pennsylvania Application February 14, 19?'6, serial No. 63,845 comms. (armani) The present invention relates to bobbins and more particularly to a bobbin of the hollow type which in use is subjected to the action of steam.

Heretofore hollow barrel bobbins for general steaming purposes have not proven satisfactory due to the fact that the bearing bushing has been fastened in place by glue and hence expansion and contraction occurs by reason of steam contact. This is a serious disadvantage and has l0 presented a problem not heretofore successfully solved. Also wooden cores of the bobbin barrel have served to mount the bobbin heads and since these cores are of wood and subjected to steam.

they soon become misshapen with the result the bobbins have an eccentric motion .on the spindles. Some of the objects of the present invention are to provide an improved bobbin; to provide a new and novel bobbin construction for general steam purposes; to provide animproved hollow barrel bobbin; to provide means for permanently holding bearing bushings in place within a bobbin barrel; to provide a head mounting for bobbins wherein provision is made for also preventing the bobbin bushings from becoming loose; to 5 provide an improved head bearing for bobbin spindles, and to provide other improvements as will hereinafter appear.

In the accompanying drawing Fig. 1 represents a perspective of a bobbin embodying one 0 form of the present invention; Fig. 2 represents a sectional elevation of the same; Fig. 3 represents a section on line 3 3 of Fig. 2; Fig. 4 represents a section similar to Fig. 2 showing the parte ready for assembly; and Fig. 5 represents a sectional detail of a modied head construction.

Referring to the drawing'one form of the present invention is shown as applied to a hollow bobbin I@ of the type employed for steam treat-- ment of the yarn, thread or other material wound on the bobbin. The bobbin I0 consists of a tubular barrel II having in the present instance a cylindrical bore l2 of relatively large diameter which has a reduced portion I3 at one end to form a bearing for the spindle upon which the bobbin is to be mounted. Radially arranged holes It form passages for the passage of steam from the bore I2 to the outer periphery of the body II.

For the purpose of providing a bearing at the endof the barrel Il opposite to that havingthe bore I3, a bushing l5 is provided having a diameter to t snugly in the end of the bore I2. A bearing bore I6 extends longitudinally of the bushing I5 and is of the required diameter to receive, in bearing relation, the other end of the spindle heretofore referred to. f In the preferred form ofthe invention the bushing end of the body I I is provided with a circular recess Il concentrically arranged with respect to the bore I2 and of a depth to seat a circular flange I8 formed on the outer end of the bushing I5. In assembled condition the outer face of the ange i8 is flush with the face of the recessed end of the body I l. The body II and the bushing I5 are preferably of wood, but any material suitable for the purpose l0 and capable of withstanding hard use may be ernployed.

To complete the bobbin the ends of the barrel II have attached heads 2li, preferably of fibre or bakelite, each of which has a centrally 15 located bearing hole 2l for the passage of the bobbin spindle. In assembled condition the holes 2| are exactly alined with the axis of the bore I2. Screws, nails or other fastening devices 22 secure the heads to the barrel il. In this con- 20 nection it should be noted that each fastening device 22 passes through the ange I8 of the bushing I5 before entering the barrel II and therefore, not only anchors the bushing I5 fast to the barrel I I, but also prevents rotation thereof relative to the barrel. 'Ihus the fastening devices 22 have the double function of mounting the heads 2G land anchoring the bushing I 5. Preferably also the bushing I5 is glued along its joint with the barrel Il. 30

In bobbins as heretofore constructed it has been the practice to mount the bobbin heads on end core extensions and since these are of wood the spindle bearing hole therein soon becomes enlarged and out of shape causing the bobbin to 35 rotate out of balance and wobble on the spindle. By the present invention this is entirely overcome because the fibre or bakelite heads bear directly on the spindle and are not subject to the wear which is present in the use of wood. 40

A modified form `of the invention is shown in Fig. 5 wherein a solid bobbin barrel 23 has a spindle bore 24 therethrough. In thisv construction each head 25 has a spindle hole 2t of the same diameter as the bore 2d and alined there- 45 with toprovide a non-wear bearing for the spindle at each end of the barrel 23. Preferably also each head 25 is provided with a circular groove 2l to receive the complementary shaped extension 28 formed on the end of the barrel 23. 50 Nails or screws 29 hold the heads fast to the barrel 23.

It will now be apparent that a complete unitary bobbin has been devised wherein a bearing bushing is permanently locked to the bobbin body in 55 such a manner that itis not subject to displacement due to expansion and contractionrcausedby subjecting the body to the action of steam. Fur-V thermore a non-wearing support has'Y been pro- 5 vided for the ends Vof the bobbingspindle, thereby Y overcoming the objections and disadvantages of a Wooden support for the spindle.

While onlytwo forms are shown inrwhich this Y, Y invention may beV embodied, it is to be understood 10 that the invention is not limited to any specific y construction, but might be applied to various forms without Adeparting from the spirit of the invention or the scope of the appended claims.'Y

vHaving thus described my invention, I c1aim:-,V 15 1. Arbobbin consisting of a barrel having a bore therethrough and a recess at one end, means forming a spindle bearing at one end ,of `said. bore, a bushing located in the other end of said bore to form a second spindle bearing, said bush-` 20 ing having its outer end ush with the adjacent end of said barrel, a ange on said bushing-seat'- ing in said recess, 'a head, means to attachl said head to one endrofV said barrel, a second head seating vagainst said barrel and said bushing to conceal the bush/ing and vbarrel assembly, and

l means passing through said second head and said flang'einto said barrelforlocking said parts together. f Y 2. A bobbin consisting ofra hollow barrel having arbore therethrough and a recess at one end,

Vmeans forming a spindle bearing at one endvof said bore, a bushing located in the other end'of said bore to form a second spindle bearing, said Vbushing having its outer vend flush with the adjacent end of said barrel, means toattach said bushing to said barrel, a Vflange on said bushing means passing through said second head and said Vange into said barrel forY locking said parts together.

Y HARRY vC. MACK.

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