US2696745A - Tool for applying bands to conduits - Google Patents

Description

I c. G. coQPER TOOL FOR APPLYING BANDS TO connuns Filed Sept. 12, 1952 Dec. 14, 1954 INVENTOR.

C HARLELS G. COQPER ATTORNEYS United States Patent Ofitice TOOL FOR APPLYING BANDS TO CONDUITS Charles G. Cooper, San Francisco, Calif.

Application September 12, 1952, Serial No. 309,343

3 Claims. (Cl. 81-9,3)

The-present invention relates to. improvements over the band-Winding tool disclosed in my copending application, .Serial No. 168,470, filed in the United States Patent Dflice on-June 1.6, .1950, and now abandoned.

An object of this invention is to provide a tool for applying a strip-like band to a conduit, regardless of the width of the band. For example, the applied band may .form a clamp for securing a coupling member to a: hose; :and, although the width of this band may vary in accordance with the requirements, the toolstill may banned for applying the hand.

More particularly described, it is herein proposed to provide a tool adapted :for wrapping a strip-like band around a conduit with facility and ease, with the band overlapping itself. The band is firmly held in place while the layers .of the overlapped portions are secured'together.

As a still further obiect it isproposed to utilize a strip-like band having a preformedoffset extending len thwise thereof, with this offset defining a groove in one face ofthe band and a projecting rib on its opposing face. In thisconnection, the tool is provided with bandembracing jaws, which have ribs arranged to enter the grooves of the band to thereby guide the jaws as the latter are rotated about the conduit during the application of the band, forcing the rib of one layer of the band into the groove .of the adjacent-underneath layer.

Moreover, it is proposed to provide a tool of the character described, which is simple in construction, durable and efiieient for 'thepurpose intended.

Other objects and advantages will appear as the spoolfication continues. The novel features will be set forth in the claims hereunto appended.

Drawings For a better understanding of this invention, reference should be had to the accompanying drawing, forming part of this application, in which:

Figure l is a side elevation view of my band-applying tool, with the jaws thereof separated and positioned on opposing sides ofa conduit, and illustrating a band partially wrapped around the latter;

Figure 2 is a similar view, but disclosing the band completely wrapped about the conduit;

Figure 3 is a top plan view of Figure 2;

Figure 4 is a vertical transverse sectional view taken along the plane IV-IV of Figure 1;

Figure 5 is an enlarged longitudinal sectlonal view taken along the line VV of Figure 2; and

Figure 6 is a perspective view of the strip-like band that I employ.

While I have shown only the preferred form of my invention, it should be understood that various changes, or modifications, may be made within the scope of the annexed claims, without departing from the spirit thereof.

Detailed description Referring now to the details, I have shown a conduit indicated generally at A, which may be a hose by way of illustration. Moreover, a coupling member B has been selected for purpose of disclosure, with its tubular sleeve 10 telescoped into the bore 11 of the conduit. Of course, I do not desire to be limited to such a conduit and coupling member.

It will be noted that I provide a band-clamp C, which is fashioned from a metallic strip 12 of the shape shown in Figure 6. This strip is preformed with an offset ex- Patent d Dec. .14, 1954 tending lengthwise thereof,--with :this offset defining a groove 14 in one face thereof and .a projecting rib :15 on its opposing face.

Upon wrapping the band strip 12 around the conduit A, the rib 1-5 is placed against this conduit. As the strip is Wrapped until it overlaps itself, as shown in Figures 2 and 5, the rib 15 of one layer enters the groove 14 .of the adjacent underneath layer of the band.

In Figures 1 and 6, the end 12a of the band strip has been disclosed as having a series'of projections 16, which may be pressed into the wall of the-conduit A. This will prevent the band from slipping relative to the-conduit as the band strip is wrapped around the latter.

After the strip has been completely wrapped about the conduit A, a punch may be utilized to make holes through the strip near the free end 12!) thereof so that a staple 17 maybe driven through the layer of the band strip and into the wall of. the conduit. It will be appreciated, of course, that a small ,nail, screw, or other suitable fastening means may be employed ,for anchoring the strip in place.

In the event that the staple 17 is :used, the legs 17;: may be long enough so as to strike the tubular sleeve 14), and thereby cause the lower ends of these legs to spread in opposite directions, as suggested by the dotdash lines in Figure 2. The cross-bar 17b of the staple may be accommodated in the groove 14 of the outermost layer of the band strip (see Figure 3).

As shown in Figures 1 to 4, inclusive, ,rny band-applying tool includes a pair of .coacting jaws D and E, which are adapted to be positioned on opposing sides of the conduit A, with the strip 12 .being interposed between theqjaws and the conduit. it will be seen that the jaws D and E ,are fashioned with concaved inner faces 18 and 19, respectively, which confront one another and are adapted to embrace the band strip 12 when the jaws are moved toward each other.

q-M-oreover, the confronting faces 18 and 19 of the two jaws .are provided with vertically-arranged ribs 24 and 21, respectively, which project therefrom and are located to enter the outermost groove 14 .of the band strip. This construction will guide the jaws as the tool is swung in a counter-clockwise direction about the axis of the conduit A, thus retaining these jaws against slipping laterally as they are rotated around the conduit. As clearly shown, these ribs extend lengthwise of their respective jaws; and, accordingly, will be disposed circumferentially relative to the interposed conduit. Moreover, the rib 20 on the fixed jaw D extends adjacent to, beneath and beyond the lower end of the rib 21 on the movable jaws E. 4130th ribs are disposed in the same plane (see Figure In order to accommodate the tool to different widths of band strips, the concavity of each band-embracing face is uniform from its rib to the opposing lateral sides 22 of the jaws D and E. Thus the strip 12 may extend beyond the jaw sides without obstruction. This is an important structural feature of the tool.

For the purpose of guiding the jaws toward and away from one another, the jaw D has been made with a barlike portion 23, which extends through a bifurcated lower end 24 of the movable jaw B (see Figure 4). A lug 25 projects upwardly from the outer end of the bar-like portion 23, and has a rod 26 threaded therethrough. The inner end of this rod has a head 27 thereon, which is rotatably anchored in a socket 28 formed in the inner face of the jaw E (see Figures 1 and 4).

In order to turn the rod 26, and thereby advance or retract the jaw E relative to the jaw D, a handle 29 is fixed to the outer end of this rod. Furthermore, this handle may be utilized for swinging both of the jaws axially around the conduit A to wrap and compress the strip thereagainst (see Figure 2). Of course, the jaws D and B may be moved toward each other by merely turning the screw 26 as the band strip is applied so as to place the latter under the desired compression.

Subsequently, the legs of the staple 17 may be driven through holes punched in the superimposed layers of the band strip. Both the steps of punching thes holes and driving the staple m y be facilitated by placing the fiat underneath surface 23a of the bar-like portion 23 against a support 30 (see Figure 2). to serve as an anvil.

The jaws D and B have free upper ends 31, which are separated from one another when these jaws embrace the clamp band C, thereby providing a space through which the fastening means, such as the staple 17, may be inserted to anchor the wrapped band to the conduit. It will be noted that the upper end of the jaw E is fashioned with a notch 32 therein to permit a staple, or the like, to be inserted between the jaws when the latter are applied to relatively small conduits.

Thus the jaw D is made Summary The operation of my tool for applying a band to a conduit is summarized briefly as follows: 7

Assuming that the tubular sleeve 10 has been inserted into the bore 11 of the conduit A, then the strip 12 is wrapped partially around the conduit, with the projections 16 being pressed into the wall of the conduit to prevent the strip from slipping and with the rib facing toward the conduit. Now the conduit and partially-applied band strip are introduced between the jaws D and E in the manner illustrated in Figure 1.

Next, the handle 29 is rotated so that its screw 26 will draw the jaws up against the strip. By revolving the entire tool about the axis of the conduit A in a counterclockwise direction in Figures 1 and 2, the band strip will be wrapped tightly upon the conduit, the ribs 20 and 21 of the jaws riding along the groove 14 of the strip to thereby guide the jaws as they move around the conuit.

After the band strip has been wrapped, as shown in Figure 2, the bar-like portion 23 of the jaw D may be placed against a suitable support 30, and punch holes made through the superimposed layers of this strip. Thereupon, the legs 17a of the staple 17 may be driven through these holes to anchor the strip in final position upon the conduit, with the cross-bar 17b of the staple being accommodated in the groove 14 of the band strip.

Thereafter, the tool may be released from the conduit A and the applied band-clamp C by merely turning the handle 29 so as to separate the jaws DE, and then disengaging the tool. Quite obviously, these jaws have been shaped to accommodate conduits of various sizes and band strips of different widths.

I claim:

1. In a tool for applying a strip-like band of the character described to a conduit: a pair of coacting jaws having concaved band-embracing faces disposed in confronting relation with each other; means for moving these jaws toward and away from one another, and for rotating the jaws about a conduit; each jaw being provided with a vertically-arranged rib on its concaved face, which projects therefrom towards the other jaw; the ribs extending lengthwise of their respective jaws; and both ribs being disposed in the same plane.

2. In a tool for applying a strip-like band of the character described to a conduit: a pair of coacting jaws having concaved band-embracing faces disposed in confronting relation with each other; means for moving these jaws toward and away from one another, and for rotating the jaws about a conduit; each jaw being provided with a vertically-arranged rib on its concaved face, which projects therefrom towards the other jaw; the ribs extending lengthwise or" their respective jaws; both ribs being disposed in the same place; each jaw having opposing lateral sides between which its rib is arranged; and the concavity of each band-embracing face being uniform from the rib thereon to the opposing lateral sides of itsjaw.

3. In a tool for applying a strip-like band of the character described to a conduit: a pair of coacting jaws having concaved band-embracing faces disposed in confronting relation with each other; means for moving these jaws toward and away from one another, and for rotating the jaws about a conduit; each jaw being provided with a vertically-arranged rib on its concaved face, which projects therefrom towards the other jaw; the ribs extending lengthwise of their respective jaws; both ribs being disposed in the same place; one of the jaws being slidably guided for rectilineal movement on the other jaw; the rib on the latter jaw extending adjacent to, beneath and beyond the lower end of the rib on the slidable jaw.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,696,194 Foreman Dec. 25, 1928 FOREIGN PATENTS Number Country Date 162,466 Austria Aug. 15, 1948

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