US2125736A

US2125736A - Tape cutting device

Info

Publication number: US2125736A
Application number: US103495A
Authority: US
Inventors: Thomas L Murray
Original assignee: Individual
Current assignee: Individual
Priority date: 1936-10-01
Filing date: 1936-10-01
Publication date: 1938-08-02
Anticipated expiration: 1955-08-02

Description

T. L. MURRAY TAPE CUTTING DEVICE Filed 001',- l. 1956 merited-Aug. 2, 1938 a I I UNITED STATES PATENT OFFICE- TAPE corms nnvrcn Thomas L. Murray, New Rochelle, N. Y.

Application October 1, 1936, Serial No. 103,495

" 8 Claims. (cl. 206-.59)

This invention relates to a tape cutting device along its free longitudinal edge with a depending and particularly to a cutting device for use with flange 2%, for a purpose to be hereinafter dereels of adhesive tape. scribed. Extending from each end of the lower The principal object of this invention relates wall 23 is a clamping leg 26 provided with an 5 to the design of said cutting device which is so intermediate loop 27; the legs 26 being arranged 5 constructed as to be adapted for removable p r ll l o h h r n p je in wnw rdl clamping engagement to the id s of the reel in in vertical relation to said lower wall 23. The superposed relation to the roll of tape wound loops 2i connect the le s 5 th the lower Wall thereon and which device is of such form as 23 and are so formed as to project outwa l m not to interfere with the positioning of the reel beyond t plane of Said legs, W the inside within its container. walls of said loops being spaced from the trans- Other objects 01 the invention relate to the Verse edges of the upp Wa as Clearly knife-edge construction of the device; to the w P e era ly the upper and lower walls 2 sliding guard for said knife-edge; to the spring hend w ll Clamping s 26 n loops 21 are construction for maintaining said guard over said integrally formed from a Single unitary ank w knife-edge; to the simple and cheap construction of sheet metal with the parts thereof bent into oi the device as a whole; to the simple and auto- Shape in the manner readily pp roman matic operation of the same and to the simple inspection f Fi r 4. n order to insure the manner in winch the d vi e i applied t d cutting device against falling from the reel while removed from the real. it is being turned, each of the clamping legs 26 29 Further objects of the invention will appear a the juncture thereof with e s is irom the following description taken in connecprovided all its Side edges With w d y directed tion with the drawing which forms a part of this 1 W f rm y n hin aid clamping legs specification, and m which; as at th and bending the corners thus formed 535 Figure 1 is a from; elevatinnal View partly in inwardly a slight distance as clearly shown in section of a reel ofadhesive tape within its, (2011- Figure Thus, with the device assembled o he mi d showing th cutting device mnunted] reel i i, the lugs 28 will resiliently and frictionally n aid re l; engage under the beads in of the reel fitted with- Figure 2 39 t View of th y and cutting in the loops ii to securely hold the cutting device go device; in position. 7 30 Figure 3 i mn Sectional w at the The free longitudinal edge of thelower wall 23 andcutting device taken on line t-t, Figure is sharpened to define a knife-edge 29 which as 2; a d shown is located forwardly of the corresponding Figure 4 is a perspective view with parts edge of the upper wall 22. Arranged for sliding moved of th cutting device movement between the

walls

22 and 23 is a guard Referring to Figure 1, it denotes a roll oi ad- M of the Same length as t pper Wall 2 The hesive tape wound on a reel ill which is placed guard m is provided With a ra n itudinal within the cylindrical container it. The reel channel 39 having paced vertical walls 32 and ill comprises a hub it and side walls M each t. the d p of d n l s's as to in having a circular peripheral head it. The reel accommodate the end fl e 2501? the upper Wall M, container it and adhesive tape it are or con- Formed on inside e po tion of the ventional standardized design. In'order to perguard at a e i e d p -e 35 in each of which nut of ease of applying the container l2 to the is placed q end of coil pr 36 with the reel it one edge of the container is provided with other end abutting the end Wall each p g an outwardly turned head it while the other edge being a apted to react between the end wall 24 is m th an inwardly turned head H and bottom of said pocket to constantly urge the which acts as a stop for the reel ii as thesame guard it in an outwardly direction. Outward is moved sideways into the container. movement of the guard 30 is limited by th The cuttingdevice it is arranged to'extend gagement 0 the d flange 25 with the inside I between the side walls It of the reel Ii and comchannel wall 32. The outside edge portion of the 50 prises a body portion-2i having spaced apart rd 30 n the rm position of the same upper and

lower walls

22 and 23, respectively, projects over the knife-edge 29, said outside edgeintegrally joined along one longitudinal edge by portion being preferably ed as at 31. the end wall 24. The upper wall 22 is of less The cutting device is appliedto the reel ll width than the lower wall 23 and is provided by snapping the same across the side walls l4, l5

the legs 26 frictionally contacting the outside surfaces of said side walls, and said device being so positioned that the beads I5 are fitted within the loops 2! as clearly shown in Figure 1.

Figure 3 shows the operation of the cutting device. The free end III"- of the adhesive tape I0 is pulled off of the reel for a selected length. With the reel held in one hand and the length of tape in the other the same is pulled baekwardly against the guard 30 to move the same inwardly against the action of the coil springs 36 to uncover the knife-edge 29. The transverse pull of the tape on said knife-edge will cut the same smoothly and quickly. Upon the completion of the cut the guard 30 will move outwardly to cover the knife-edge. Another method of cutting the tape when the tape has been unwound to a desired length while bandaging is to impart a quick twist of the wrist of the hand holding the reel. This movement will result in a quick and smooth severing of the tape.

While the cutting device as above described has been shown used with ,a reel of adhesive tape it is to be understood that'the same may readily be applied for use with any type of tape or ribbon. The principles involved in this invention are susceptible of numerous other applications which will readily occur to persons skilled in the art. The invention is therefore to be limited as indicated by the scope of the appended claims.-

Having thus set forth and disclosed the nature of this invention, what is claimed is:

1. A cutting device comprising spaced upper and lower walls joined along one longitudinal edge by an end wall, said lower wall being of greater width than said upper wall, a knife-edge formed on the free longitudinal edge of said lowor wall, a guard element for said knife-edge arranged for bodily transverse sliding movement between said upper and lower walls, spring means acting on said guard element to move the same outwardly, stop means carried by said upper wall and coacting with a portion of said guard elev ment to limit said outward movement, and'means associated with at least one 'of said walls for mounting said cutting device on, a supporting structure.

2. A cutting device comprising spaced upper and lower walls, an end wall joining the same along one side edge thereof, said lower wall being of greater width than said upper wall and procoacting with a wall of said channel to limit said outward movement, and attaching means formed at the transverse ends of said lower wall for mounting said cutting device on a supporting structure.

3. In the cutting device as set forth in claim 2; said guard element including pockets formed on its inside edge portion in opposed relation to said end wall, and said spring means comprising coil springs seated within said pockets and in engagement with said end wall, said coil springs being under initial compression.

4. In the cutting device as set forth in claim 2; wherein said attaching means comprises depending parallel legs, and spring loop means connecting said legs with said lower wall.

5. In the cutting device as set forth in claim 2; said guard element having a length equal to that of said knife-edge and normally maintained under the action of said spring means in over-lapping relation to said knife-edge and adapted to uncover the same by the action thereon of a member to be cut by said knife-edge.

6. In combination with a roll of tape wound on a reel, a cutting device comprising a body portion, means on said body portion for clamping the same to said reel, a knife-edge formed on said body portion, a sliding guard mounted on said body portion normally covering said knife-edge and adapted to be moved to a position uncovering the knife-edge by a pulling action on a length of said tape to be cut from said roll acting against said guard.

7. In combination with a roll of tape wound on a reel, a cutting device comprising a body portion defined by spaced upper and lower walls and an end wall joining the same, a knife-edge carried by said lower wall, a sliding guard for said knife-edge positioned in said body portion, spring means within said body portion acting on said guard to move the same outwardly, stop means on said body portion engaged by said guard to limit both outward and inward movement thereof, leg means on said body portion for clamping said device to said reel with said knife-edge parallel to the axis thereof; said guard normally covering said knife-edge and adapted to uncover the same by a pulling action on a length of said tape to be cut from said roll acting against said guard.

8. In combination with a tape carrying spool, a cutting device attached to the spool and having a cutting edge, a guard member oscillatably mounted upon the cutting device and having a portion adapted to cover said cutting edge to guard the same, and resilient means normally urging the guard member into guarding position, said guard member when in guarding position extending beyond the cutting edge and adapted to be retracted by the tape as the latter is drawn toward and across the cutting edge.

THOMAS L. MURRAY.