US1986711A

US1986711A - Tool for applying fastener elements

Info

Publication number: US1986711A
Application number: US704560A
Authority: US
Inventors: Clarence O Carlson
Original assignee: American Steel and Wire Company of New Jersey
Current assignee: American Steel and Wire Company of New Jersey
Priority date: 1933-12-29
Filing date: 1933-12-29
Publication date: 1935-01-01
Anticipated expiration: 1952-01-01

Description

Jan. 1, 1935. c. o, CARLSON 'TOOL FOR APPLYING FASTENER ELEMENTS Filed D60. 29, 1953 4 Sheets-Sheet l Jan. 1, 1935. c. o. CARLSON 1,986,711

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Jan. 1, 1935. c. o. CARLSON 1,986,711

TOOL FOR APPLYING FASTENER ELEMENTS Filed Dec. 29, 1953 I 4 sileetfisheet 3 [Wei afar. CLflEE/VCE O. CqeLso/v,

1935- c. o. CARLSON 1,986,711

TOOL FOR APPLYING FASTENER ELEMENTS Filed Dec. 29, 193s 4 sheets-sheet 4 Pg. Z

Invenfor: CLQEENCE O. CflELO/V,

Patented Jan. 1, 1935 UNITED STATES PATENT o1=1=1c1a- Clarence Q. Carlson, East Cleveland, Ohio, assignor to The American Steel and Wire Company of New Jersey,a corporation of New Jersey Application December 29, 1933, Serial No. 704,560

- 4 Claims. (01. 819.1)

This invention relates to a tool for applying fastener elements, and particularly those which are used to unite-the overlapping ends of box straps and the like, although not limited thereto.

In my co-pending application, entitled Fasteners, filed. December 29, 1933,'and bearing Serial No. 704,561, there is disclosed a novel fastener element for uniting the ends of tying elements, such as box straps and the like, in such manner as to positively prevent their relative movement. The fastener element of the co-pending application comprises-a substantially U-shaped blank providingdownwardly extending legs, and hav ing a plurality of inwardly extending apertures from both of its longitudinal edges, the axis of the bends of the legs intersecting the substantial mid-portion of the apertures.

The fastener described is intended to be used in such manner that the legs of the U-shaped blank will tightly embrace the overlapped ends of a tying element of the type referred to, and the material of the latter is upset through the apertures, causing lugs to be sheared inwardly from its edges, and thus made tointerlock with the side edges of the apertures.

Among the objects of the present invention is.

the provision of a novel tool for applying fastener elements, and particularly of the type described, which will be cheap and easy to manufacture and may be worked with utmost speed and simplicity. These and further objects will be apparent after referring to the drawings, in which: Figure l is a side elevation of the device of the invention.

Figure 2 is a perspective of the preformed blank another stage of operation.

. Figure 6 is a sectional view on the line VIVI of Figure 5.

Figure 7 is a sectional elevation on the line having offset L -

shaped flanges

4 and 5, respectively, and which, when joined together, form r a housing for the elements of the invention.

The end of a handle 6 is disposed between the L-

shaped flanges

4 and 5 of the

side plates

2 and 3, and united thereto as by means of bolts and nuts '7 and 8, respectively. A pin 9 is mounted in the upper end of the housing formed by the

frames

2 and 3 and secured thereto by means of nuts 12 on the outside thereof. An operating lever 14 is pivotally mounted an the pin 9 and provided with an offset end 15. A pair of links 16 are connected to the offset portion 15 of the operating lever 14 by means of a pivot pin 17, which is held in place by a centrally disposed lock pin 18. A second pivot pin 20 is provided with flattened ends, as shown at 21, which are adapted to ride in an elongated aperture 22 in each of the

side plates

2 and 3. A pair of links 23 are connected to the pivot pin 20 and made to extend toward one of the edges of the

plates

2 and 3, while a pair of similar links 24 are also connected to the pin 20 at positions more adjacent its ends. A jaw lever 25 is connected at one of its ends to the links 23 by means of a pivot pin 26, which is'provided with a lock plate 27. A jaw lever 29 isconnected on one of its ends to the links 24 by means of a pin 30. The jaw lever 25 is provided with a journal 32 intermediate its ends, and a similar journal 33 provided for the jaw lever 29. A pivot pin 34 is made to extend through the journal 32 in the jaw lever 25, and a similar pin 36 provided for the journal 33 of the jaw lever 29, and are both secured to the

end plates

2 and 3 by means of nuts 38. The jaw lever 25 carries on its outer end an inwardly extending jaw 40, while a similar jaw 41 is provided on the outer end of the jaw lever 29.

A plunger rod 43 is disposed between the

jaw levers

25 and 29 and is provided with an elongated slot 44 adjacent its upper end. A shearing plunger 45 is carried by the other end of the plungerrod 43 and provided on each of its sides with a plurality of downwardly extending lugs 46. The shearing plunger 45 is tightlysecured to the plunger rod 43 by means of a centrally disposed screw 49. A

A guide block 51 is connected to the lower extremity of the

side plates

2 and 3 by means of capscrews 52, and is profiled with a plurality of slots 53 for receiving the downwardly extending lugs 46 on the shearing plunger 45. The shearing plunger'45 is biased away from the guide block 51 by' means'of a spring 55 which seats in a recess 57 inthe latter.

A substantially U-shaped clip 59 is disposed in such manner as to loosely embrace the guide block 51, and carries a plurality of downwardly extending tongues 60, which contact with the outer sides of the guide block 51 and provide apertures therebetween, as at 61, which permit the lugs 46 of the shearing plunger 45 to seat in the slots 53 in the guide block.

The ends ofthe tongues 60 are made to extend inwardly, as at 62.

Referring to Figures 2 and 3 of the drawings, there is disclosed the fastener of my co-pending application, previously identified, which comprises a rectangular plate '70 having a plurality of apertures 71 adjacent and parallel its longitudinal edges. manner as to provide downwardly extending

leg portions

72 and 73. The apertures '71 are bisected at their substantial mid-portions by the axes of the bends forming the downwardly extending legs 72 and '73.

In operation, a box strap is made to embrace an article and its ends, as shown at 75 and 76 of Figure 3, are arranged in overlapped relationship.

The blank of the fastener is placed between the inwardly extending ends 62 of the tongues 60, while the device is in the position of Figure 1. The operating lever 14 is moved from its open position toward the handle 6 which is secured to the

flanges

4 and 5 of the

end plates

2 and 3, respectively. As the lever '14 moves, its offset portion 15 lowers the links 16, which in turn move the pin 20 downwardly in the elongated slots 22. This motioncauses the

links

23 and 24 to extend in the manner of Figure 5, thus bringing together the inwardly extended

portions

40 and 41 of the jaw levers 25 and .29, respectively. This coming together of the

members

40 and 41 bends the downwardly extending legs '72 and 73 of the blank and causes them totightly embrace the ends '75 and 76 of the box strap. As the pin 20 continues to descend it engages the plunger rod 43 at the bottom of its elongated slot 44 and causes it to lower the shearing plunger 45, moving the downwardly extending lugs 46 in the slots 53 in the guide block 51. v

The lugs 46 will thus be made to contact with the exposed portions of the upper end of the box strap and depress the same in the apertures 71. The exposed portions of the box strap will bend and partially shear inwardly and form lug portions '75 and 76 from the strap. These lug portions '15 and 76 engage the side edges of the apertures '71 and positively prevent relative movement between the blank and the ends of the strap.

The operating lever 14 is then moved to its original position, which opens the jaw levers 25 and 29, and raisesthe plunger rod 43 and the shearing plunger. 45, together with its lugs 46, prior to another operation.

embodiment of my invention, it will be understood that I do not wish to be limited exactly thereto, since various modifications may be made without departing from the scope of my invention, as defined in the following claims.

The plate 70 is preformed in 'such' I claim:

1. A device for applying U-shaped fastener elements having a plurality of apertures, a: substantially U-shaped clip carried by said device, the edges of said clip having downwardly and inwardly extending lugs for engaging the side walls of one of said U-shaped fastener elements, means for causing said element to tightly embrace the object to which it is to be applied, and means for bending and partially shearing portions of said object through the apertures in said fastener element.

2. A device for applying U-shaped fastener elements having a plurality of apertures, comprising a housing, a pair of jaw members pivotally mounted on said housing, a pin slidably mounted on said housing, links connecting said J'aw members and said pin, a handle secured to said housing, 'a lever pivotally mounted on said housing, at least one link for connecting said lever with said pin, a plunger connected to said pin, a block secured to said housing, means associated with said block for supporting one of said fastener elements, said jaw members being operable to cause said fastener element to tightly embrace the object to which it is to be applied, and means on said plunger for bending and partially shearing portions of said object through the apertures in said fastener element.

-3. A device for applying fasteners comprising a housing, a pair of jaw members pivotally mounted on said housing, an operating linkage for said jaw members, a plunger connected to said linkage, said plunger being provided on both of its sides with a plurality of vertically depending lugs, a block disposed between the lugs on said plunger and secured to said housing, said block being profiled to receive said lugs, a substantially U-shaped clip carried by said block and providing vertically depending fingers for embracing the outer surfaces of the sides of said block, said vertically depending fingers having inwardly extending ends, a spring for biasing said plunger away from said block, and mean for actuating said-operating linkage.

4. A device for applying fasteners comprising a housing, a pair of jaw members pivotally mounted on said housing, an operating linkage for said jaw members, a plunger connected to said linkage, said plunger being provided on both of its sides with a plurality of vertically depending lugs, a block disposed between the lugs on said plunger and secured to said housing, said block being profiled to receive said lugs, a substantially U-shaped clip carried by said block and providing vertically depending fingers for embracing the outer surfaces of the sides of said block, said vertically depending fingers having inwardly extending ends, a spring for biasing While I have shown and described one specific said plunger away from said block, a handle secured to said housing, and a lever pivotally mounted on said housing for actuating said operating linkage.

CLARENCE O. CARLSON.