US2891296A - Clamp - Google Patents

Description

P. DARDE June 23, 1959 CLAMP 2 Sheeis-Sheetl Filed May 9, 1955 FIG.

FIG, 2.

; INVENTOR. PETER DARDE FIG. 3.

ATTORNEYS P. DARDE June 23', 1959 CLAMP Filed May 9, 1955 2 Sheets-Sheet 2 FIG. 5.

FIG. 6.

I 'INVENTOR. PETER DARDE BY Fl G, 4.

ATTORNEYS away from United States Patent Ofifice CLAMP Peter Darde, Line Lexington, Pa, assignor, by mesne assignments, to American Machine and Metals, Inc., New York, N.Y., a corporation of Delaware Application May 9, 1955, Serial No. 506,791 3 Claims. (Cl. 24-81) This invention relates to a clamp and, more particularly, relates to a clamp which is adapted to secure an elongated object such as a tube to, for example, a shaft which may be either solid or hollow.

It is an object of this invention to provide a clamp which can be used to readily secure, for example, a tube to a shaft.

It is a further object of this invention to provide a structure which can be used to secure a tube to a shaft with only a single operation being necessary for the engagement of both the tube and the shaft.

These and other objects of this invention will become apparent on reading the following description in conjunction with the drawings in which:

Figure 1 is a front elevation of a clamp in accordance with this invention;

Figure 2 is a side elevation of the clamp in Figure 1;

Figure 3 is a front elevation of the clamp in Figure 1 illustrating its use in connection with a small sized tube;

Figure 4 is a side elevation of the lower portion of the clamp of Figure 1 illustrating its use in connection with a shaft or tube of large dimensions;

Figure 5 is a front elevation of a modified clamp in accordance with this invention;

Figure 6 is a side elevation of the clamp in Figure 5.

As shown in Figures 1 through 3, a clamp 2 in accordance with this invention, is provided with a pair ofspaced legs 4 and 6.Legs 4 and 6 are each provided with a serrated portion 8 which is adapted to engage ashaft 10 which, as illustrated, may be a hollow shaft.

Integral with leg 4 are a pair ofjaw members 12, 12 each of which are provided with an arcuate serratedportion 14. Similarly,leg 6 is provided with a pair ofjaw members 16, 16 which are respectively oppositejaw members 12, 12 and are provided with arcuateserrated portions 18. Theserrated portions 14 and 18 are adapted to engage, for example, anelongated tube 20.

law members 12, 12 and 16, 16 are pivotably mounted on apin 22 which is headed over as shown at 24 and 26. Abolt 28 is pivotably mounted onpin 22 which passes through an opening 30 inhead 32 ofbolt 28.Hollow spacing members 34 and 36 mounted onpin 22 act tospace bolt 28 centrally between the jaw members.

Ahelical spring 40 hasextension arms 42 and 44 which engagelegs 4 and 6 and act to bias the tops of the legs each other thus tending to separate the jaw members.

Bolt 28 has ashank portion 46 which is adapted to pass throughtube 10 and has a threadedportion 48 which receives anut 50.

In operation, clamp 2 is first secured totube 18 by passingshank 46 ofbolt 28 throughopenings 52 and 54 intube 10.Nut 50 is then screwed to the outer end of threadedportion 48. In this position,spring 40 biases the upper portion oflegs 4 and 6 apart and thus keepsjaw members 12, 12 and 16, 16 spread apart in a position to receive thetube 20. Tube is then inserted betweenjaw members 12, 12 and 16, 16 andnut 50 is 2,891,296 Patented June 23, 1959 threaded further onbolt 28. The latter action causes thelegs 4 and 6 to pivot ontube 10 which causes thejaws 12, 12 and '16, 16 to be drawn together. After the jaws have tightly clamped thetube 20, the further tightening ofnut 50 causes the jaws to be tightly clamped to tube 10.

Figure 3 illustrates the use of the clamp 2 to clamp thetube 58 which is smaller in diameter than thetube 20 in Figure 1.

As shown in Figure 4, the clamp 2 can readily be secured to varying sizes of shafts or tubes, thetube 10 of Figure 1 being shown in phantom lines and thelarger diameter tube 56 being shown in full lines.

An alternative device which eliminates securing the clamp through an opening in the tube is shown in Figures 5 and 6. Aclamp 60 is provided withjaw members 12, 12 and 16, 16 andlegs 4 and 6 which are identical with those of the clamp 2.

J awmembers 12, 12 and 16, 16 are pivotably mounted on apin 62 which extends beyond the outer edges of the jaws and has headed overends 64, 66.Bolt members 68, 68 are pivotably secured topin 62 by eye portions 70 which are located inside headed overends 64 and 66, respectively. Asaddle 72 having a pair of serratedarcuate portions 74 is provided withopenings 76 for the passage ofbolt member 68.Nuts 78 are threaded onbolt members 68 and engage saddle 72. As shown,jaw members 12, 12 and 16, 16 are adapted to engage a tube 86 and atube 82 is engaged bylegs 4 and 6 andsaddle 72.

In operation,clamp 60 is secured totube 82 byfirst seating legs 4 and 6 ontube 82 and then engagingtube 82 withsaddle 72 which is secured in position bynuts 78. Tube 80 is then inserted betweenjaw members 12, 12 and 16, 16 and thennuts 78 are further threaded ontobolt members 68 to first cause thejaw members 12, 12 and 16, 16 to tightly engagetube 80 and to then causetube 82 to be tightly clamped betweenlegs 4 and 6 andsaddle 72.

It is not desired to be limited except as set forth in the following claims.

What is claimed is:

1. A clamp adapted to secure an elongated object at a substantially right angle and in a different plane with respect to a shaft comprising a pair of spaced legs each having a concave surface at a terminal end thereof to straddle and engage said shaft, jaw members secured to said legs and lying in planes substantially perpendicular to the planes of the legs respectively, said jaw members being pivoted together on a pin above the bottom of said legs and substantially midway between said! legs, means connected to said pin and adapted to engage the side of said shaft opposite said legs to advance said. pin towards said shaft and to cause said jaws to grip the elongated object and the clamp to be secured to said shaft.

2. A clamp adapted to secure an elongated object at a substantially right angle and in a different plane with respect to a shaft comprising a pair of spaced legs each having a concave surface at a terminal end thereof to straddle and engage said shaft, jaw members secured to said legs and lying in planes substantially perpendicular to the planes of the legs respectively, said jaw members being pivoted together on a pin above the bottom of said legs and substantially midway between said legs, a bolt pivotally mounted on said pin, means threaded on said bolt and adapted to engage the side of said shaft opposite said legs.

3. A clamp in accordance with means connected to the concave surface adapted opposite the legs and mounted on the pin and claim 1, in which the pin comprises a saddle having a to engage the side of the shaft a pair of bolts each pivotally secured to the saddle by a nut.

(References on following page) 3 7 References Cited in the file of this patent 2,212,156 UNITED STATES PATENTS 483,963 A Leger Oct. 4,1892 578,014 Homan' Mar. 2, 1897 5 1,986,028 'Terry Jan. 1, 1935 55 596 2,014,634

Polgbv 1 Sept. 17, 1935 Erdley Aug. 20, 1940 Ruggieri Oct. 28, 1941 Sherrill Jan. 13, 1942 FOREIGN PATENTS Germany Mar. 10, 1891

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