June 23, 1959
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`P. DARDE
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`Filed May 9,‘ 1955
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`2,891,296
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`2 Sheets—Sheet;
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`INVENTOR.
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`PETER DARDE
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`vgbmmfi’uj‘ “
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`ATTORNEYS
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`June 23', 1959
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`Filed May 9, 1955
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`P.DARDE
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`CLAMP-
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`2,891,296
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`2 Sheets§Sheet 2
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`FIG.
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`'5.
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`:I::E""'“
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`FIG. 6.”
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`INVENTOR.
`PETER - D'ARDE
`BY
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`ATTORNEYS
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`United States Patent Office
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`1
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`2,891,296
`CLAMP
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`Peter Danie, Line Lexington, Pa., assignor, by mesne as-
`signments,
`to American Machine and Metals, 1116.,
`New York, N.Y., a corporation of Delaware
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`Application May 9, 1955, Serial No. 506,791
`3 Claims.
`(Cl. 24—81)
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`This invention relates to a clamp and, more particu-
`larly, 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.
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`10
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`15
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`20
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`Patented June 23, 1959
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`2
`threaded further on bolt 28. The latter action causes the
`legs 4 and 6 to pivot on tube 10 which causes the jaws
`12, 12 and 16, 16 to be drawn together. After the jaws
`have tightly clamped the tube 20, the further tightening
`of nut 50 causes the jaws to be tightly clamped to tube 10.
`Figure 3 illustrates the use of the clamp 2 to clamp
`the tube 58 which is smaller in diameter than the tube 20
`in Figure 1.
`As shown in Figure 4, the clamp 2 can readily be se-
`cured to varying sizes of shafts or tubes, the tube 10
`of Figure 1 being shown in phantom lines and the larger
`diameter tube 56 being shown in full lines.
`An alternative device which eliminates securing the
`an opening in the tube is shown in Fig-
`ures 5 and 6. A clamp 60 is provided with jaw mem~
`bers 12, 12 and 16, 16 and legs 4 and 6 which are identi-
`cal with those of the clamp 2.
`Jaw members ‘12, 12 and 16, 16 are pivotably mounted
`on a pin 62 which extends beyond the outer edges of the
`jaws and has headed over ends 64, 66. Bolt members
`68, 68 are pivotably secured to pin 62 by eye portions 70
`which are located inside headed over ends 64 and 66,
`respectively. A saddle 72 having a pair of serrated arcu-
`ate portions 74 is provided with openings 76 for the
`passage of bolt member 68. Nuts ’78 are threaded on
`bolt members 68 and engage saddle 72. As shown, jaw
`members 12, 12 and 16, 16 are adapted to engage a tube
`86 and a tube 82 is engaged by legs 4 and 6 and saddle 72.
`In operation, clamp 60 is secured to tube 82 by first
`seating legs 4 and 6 on tube 82 and then engaging tube
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`first cause the jaw members 12, 12
`and ‘16, 16 to tightly engage tube 80 and to then cause
`tube 82 to be tightly clamped between legs 4 and 6 and
`saddle 72.
`It is not desired to be limited except as set forth in
`the following claims.
`What is claimed is:
`l. A clamp adapted to secure an elongated object at a
`substantially right angle and in a different plane with re-
`spect to a shaft comprising a pair of spaced legs each
`havmg 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
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`25
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`30
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`227
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`40
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`5O
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`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 en-
`gagement of both the tube and the shaft.
`These and other objects of this invention will become
`apparent on reading the following description in con—
`junction 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 ac-
`cordance 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 ac-
`cordance with this invent-ion, is provided with a pair of
`spaced legs 4 and 6. Legs 4 and 6 are each provided
`with a serrated portion 8 which is adapted to engage a
`shaft 10 which, as illustrated, may be a hollow shaft.
`Integral with leg 4 are a pair of jaw members 12, 12
`each of which are provided with an arcuate serrated por-
`tion ‘14. Similarly, leg 6 is provided with a pair of jaw
`members 16, 16 which are respectively opposite jaw
`members 12, 12 and are provided with arcuate serrated
`portions 18. The serrated portions 14 and 18 are adapted
`to engage, for example, an elongated tube 20.
`law members 12, 12 and 16, 16 are pivotably mounted
`on a pin 22 which is headed over as shown at 24 and
`26. A bolt 28 is pivotably mounted on pin 22 which
`passes through an opening 30 in head 32 of bolt 28. Hol-
`low spacing members 34 and 36 mounted on pin 22 act
`to space bolt 28 centrally between the jaw members.
`A helical spring 40 has extension arms 42 and 44 which
`engage legs 4 and 6 and act to bias the tops of the legs
`away from each other thus tending to separate the jaw
`‘ members.
`Bolt 28 has a shank portion 46 which is adapted to
`pass through tube 10 and has a threaded portion 48
`which receives a nut 50.
`In operation, clamp 2 is first secured to tube 16 by
`passing shank 46 of bolt 28 through openings 52 and
`54 in tube 10. Nut 50 is then screwed to the outer end
`of threaded portion 48.
`In this position, spring 40‘ biases
`the upper portion of legs 4 and 6 apart and thus keeps
`jaw members 12, 12 and 16, ‘16 spread apart in a po-
`sition to receive the tube 20. Tube 20 is then inserted
`between jaw members 12, 12 and 16, 16 and nut 50 is
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`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
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`having a concave surface at a terminal end thereof to
`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
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`3. A clamp in accordance with claim 1, in which the
`means connected to the pin comprises a saddle having a
`concave surface adapted to engage the side of the shaft
`opposite the legs and a pair of bolts each pivotally
`mounted on the pin and secured to the saddle by a nut.
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`(References on following page)
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`(50
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`7O
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`2,891,296
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`3
`References Cited in the file of this patent
`UNITED STATES PATENTS
`. Leger 1---;____________ Oct. 4» 1892
`«Homan' ____1_______,1_ Mar. 2, 1897 5
`rTerry _________________ Ian. 1, 1935
`Polgbv _1__-_1________ Sept. 17, 1935
`
`483,963
`578,014‘
`1,986,028
`2,014,6347
`
`2,212,156
`3333;?)
`’
`’
`
`55596
`’
`
`4
`
`4_>.
`Erdley ________________ Aug. 20, 1940
`Ruggieri ______________ Oct. 28, 1941
`Sherrill _______________ Jan. 13, 1942
`
`FOREIGN PATENTS
`
`Germany ______________ Mar. 10, 1891
`
`