US2296439A - Clamp applying tool - Google Patents

Description

Sept. 22, 1942. H. H. HELBusH ErAL CLAMP APPLYING TOOL Filed Sept, 22, 1941 \vl lll/1111111111111", n

Patented Sept. 22, 1.94.2

CLAMP APPLYING TOOL Herman H. Helbush, Los Angeles, and Elmer L. LiDD, Glendale, Calif., assignors to Hollywood Comb Curler, Inc., Los Angeles, Calif., a corporation of California Application September 22, 1941, Serial No. 411,878 3 claims. (o1. 29-84) This invention relates to clamp applying tools and has more particularly to do with tools for holding and operating clamps utilized for the purpose of retaining perforated sheets in superposed relation preparatory to riveting or the like.

An object of the invention is to provide a tool of this character which may be operatedv with maximum ease and simplicity.

Another object is to provide a tool which may be economically manufactured and assembled and which is extremely durable.

Another object is the provision of a tool of this character which has uniform and efficient operation.

Still further objects and advantages are inherent in our invention and how those as well as the foregoing are attained will become apparent from the following detailed description of a presently preferred example thereof, for which purpose we shall refer to the accompanying drawing, in which:

Fig. 1 is a longitudinal section showing some parts in elevation;

Fig. 2 is a plan view;

Fig. 3 is an end View;

Fig. 4 is a fragmentary section on line 4-4 of Fig. l; and

Fig. 5 is a fragmentary section on line 5--5 of Fig. 1.

Referring now to the drawing, we show at 5 a housing comprised of oppositely embossed companion plate 5a, 5b. The housing is pistolshaped, providing a handle portion 5c and a barrel portion 5d. The handle portions are inwardly embossed at 6 (see Fig. 5) and spot welded together at 6a to secure the plates together.

A track 8 of U-shaped cross-section is mounted stationarily in the barrel, having an outwardly projecting -portion 8b extending through the opening in the end of the barrel. The track member is transversely slotted at 8a, to receive the up-turned end 9 of the housing to secure the track against longitudinal escape from the housing. The bottom wall of the track is slotted at l0 to pass the upper end |2a of the lever or trigger |2, the trigger |2 being pivotally mounted in the housing by means of pin I4 and is passed through the slot 6 in the housing. A coil spring secured at one end to the end |2a of the trigger and at its other end to the bracket 2| normally urges the trigger into the inoperative or normal position shown in full lines in Fig. 1.

A sliding member of U-shaped cross-section on track 8, having an outer end wall 3| presenting a hole 32 through which the reduced end 33a of a plunger 33 passes to secure the plunger to the sliding member. The reduced end is headed at 33h. The plunger has a recessed outer end 34 to receive the head of a clamp member as shown more particularly in our copending application Serial Number 408,100, filed August 23, 1941, of which this present application is a continuation in part. A link 40 is pivotally secured by pin 4| to end I2a of the trigger and is pivotally secured at its opposite end, by pin 42, to sliding member 30 so that movement of the trigger causes sliding movement of the member 30.

The side walls of the projecting end 8b of the track member 8 curve outwardly and upwardly at 45 to provide a support for the segmental clamp receiving cradle 5U, the cradle being welded or otherwise suitably secured to the curved walls d5. The cradle presents a shoulder 5| which has a tapered undercut 52 in the manner more particularly described in our said copending application for the purpose of receiving an oppositely tapered shoulder of a clamp element not shown, whereby to locate the clamp in the tool.

In operation, a clamp of the character illustrated in our said copending application is placed longitudinally in the cradle 50 with its inner end 60 in position to be engaged by the plunger 33 when the latter is moved outwardly to the dotted line position of Fig. l, with a shoulder of the clamp engaging against the shoulder 5I of the cradle. Then the operator compresses the trigger l2 towards the handle, to the dotted line position of Fig. l, which causes link 40 to slide member 30 and its carried plunger 33 to the right in Fig. l against the head of a clamp mounted in the cradle whereby. to compress the spring which forms a part of the clamp, not shown, and forces the retaining pin of the clamp outwardly for insertion in registering holes of superposed sheets to be riveted. Upon release of the trigger the spring 20 returns the tool to normal position, after which the tool may be removed from the clamp.

While, for the purposes of making our invention understood, we have resorted to specic structural details, we wish it understood that our invention, in its broader scope as defined by the appended claims, is susceptible of various modications and adaptations and is not confined to the details described.

We claim:

1. A clamp applying tool comprising a housing is disposed oppositely to and is slidably mounted 55 having a handle and a barrel, a track of U-shaped cross-section stationarily mounted in the barrel, a clamp receiving cradle positioned adjacent the outer end of the barrel, a plunger carrying bar of inverted U cross-section slidably mounted on the track, anda plunger secured to the outer end of said bar and being slidable through the outer end of the barrel towards and away from said cradle.

2. A clamp applying tool comprising a housing having a handle and a barrel, a track of U- shaped crossseetion stationarily mounted in the barrel, a clamp receiving cradle of semi-circular cross-section supported by the outer .end ofthe track, a plunger carrying bar of inverted U cross-- section sldaby mounted on the track, and a plunger secured to the outer end of said bar and being slidable through the outer end of the barrel towards and away from said cradle.

3. A tool of the class described comprising a housing, a pair of oppositely disposed channel iron members in the housing, one of said members being slidable on the other and presenting clamp engaging means and the other of said members presenting clamp holding means, and means for slidably moving the first-mentioned member.

HERMAN H. HELBUSH. ELMER L. LIPP.

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