US2819853A

US2819853A - Thread holder

Info

Publication number: US2819853A
Application number: US503687A
Authority: US
Inventors: Kozlevcar Mary
Original assignee: Individual
Current assignee: Individual
Priority date: 1955-04-25
Filing date: 1955-04-25
Publication date: 1958-01-14
Anticipated expiration: 1975-01-14

Description

Jan. 14, 1958 M. KOZLEVCAR 2,819,353

THREAD HOLDER Filed April 25, 1955 INVENTOR. m5? .5 QZJZ V (1Z1? United States Patent THREAD HOLDER Mary Kozlevcar, Cleveland, Ohio Application April 25, 1955, Serial No. 503,687

1 Claim. (Cl. 242-1252) This invention relates to caps for thread spools.

It is an object of the present invention to provide caps for thread spools which prevent thread from becoming unraveled from the spool.

It is another object of the present invention to provide a deformable, pressure-sensitive plastic cap which may be readily pressed onto the top of the spool and retained thereon in live engagement, the cap holding the free end of the thread between the spool and the cap.

It is still another object of the present invention to provide a pressure-sensitive, deformable cap for thread spools of the above characteristics which is formed of polyvinyl plastic or polyethylene plastic or other substance having similar physical characteristics which due to its elasticity will firmly grip the end of the spool and to hold the same until forcibly removed therefrom.

Other objects of the invention are to provide a cap for thread spools which is of simple construction, has a minimum number of parts, is inexpensive to manufacture and efiicient in operation.

For other objects and a better understanding of the invention, reference may be had to the following detailed description taken in connection with the accompanying drawing, in which:

Figure 1 is a perspective view of a preferred embodiment of the present invention shown alone;

Fig. 2 is a perspective view of a conventional spool of thread;

Fig. 3 is a perspective view showing the invention in operative use on the spool of Fig. 2; and

Fig. 4 is a fragmentary vertical sectional view thereof taken along the line 4-4 of Fig. 3.

Referring now more in detail to the drawing 13 represents a conventional wooden spool having the thread 14 wound therearound and being provided with the central bore 15 which receives therewithin a spindle or the like, in the well known manner.

In the practice of my invention, a plastic cap including a circular top wall and an integrally formed depending cylindrical skirt 10a is provided with a central opening 11 adapted to be aligned with the bore of the spool. The cap is preferably formed of polyvinyl or polyethylene plastic or other substance having similar characteristics with the inside depending skirt 10a slightly less than the diameter of the spool in live engagement therewith due to the deformable, pressure-sensitive nature of the material employed.

2,819,853 Patented Jan. 14, 1958 The outer surface of the skirt 10a is integrally formed with the peripheral beads or ridges 12 vertically spaced apart and which increase the sealing characteristics of the skirt by resisting expansion.

As shown in Fig. 4, the inside of the skirt 10a near the lower edge thereof is outwardly flared, as at 16, so as to permit the easy and ready insertion of the cap and removal thereof from the enlarged ends of the spool. As the cap is pushed onto the spool, the skirt portion 10a thereof will expand slightly due to its elasticity to grip the end of the spool firmly. When the cap is fully pushed onto the spool after first passing the free end of the thread 14 across the upper end thereof, the cap will hold the thread securely and prevent it from unraveling. The opening 11 is provided as to receive therethrough the pin or spindle which rotatably mounts the spool.

Although three vertically spaced beads or grooves 12 have been shown, it will be readily apparent that any number may be employed.

It should now be apparent that there has been provided a cap for threaded spools which is adapted to be removably mounted thereon to prevent the thread from unraveling and which is secured to the spool in such a manner that the spool may be mixed with other spools in a drawer or the like without danger of the threads of various spools becoming entangled and wasted. The beads or ridges 12 in the skirt 10a act to yieldably engage the skirt with the adjacent end of a spool to thus frictionally hold the free end of the thread thereon and to prevent the same from unwinding.

While various changes may be made in the detail construction, it shall be understood that such changes shall be within the spirit and scope of the present invention as defined by the appended claim.

What I claim as new and desire to protect by Letters Patent of the United States is:

The combination with-a thread spool having enlarged portions at each end thereof, of a deformable, pressure sensitive cap adapted to be press fitted onto one end of the spool whereby to engage the free end of the thread between the end of the spool and said cap, said cap comprising a substantially circular top wall integrally formed with a depending hollow, cylindrical skirt having an inside diameter slightly less than that of the enlarged end of the spool, said top wall being provided with a central opening aligned with the longitudinal bore of the spool, said top wall and skirt being formed of deformable, elastic, plastic material, said skirt on the outer face thereof being integrally formed with a plurality of vertically spaced peripheral ridges whereby to increase the contractual properties of said skirt when in engagement with the enlarged end of the spool.

References Cited in the file of this patent UNITED STATES PATENTS 885,517 Prescott Apr. 21, 1908 1,648,437 Anderson Nov. 8, 1927 1,783,339 Mitchell Dec. 2, 1930