US2821762A - Clamps - Google Patents

Description

Feb. 4, 1958 1 s. w. FOOSE 2,821,762

CLAMPS Filed June 21, 1955 j w-ax W34 INVENTOR. v

United States Patent CLAMPS George W. Foose, Reno, Nev. Application June 21, 1955, Serial No. 516,970 1 Claim. (CI. 24-81) This invention relates to clamps and more particular 1y to clamps for holding two or more chairs in related position.

An object of the invention is to provide an improved clamp of the above character that permits quick and easy joining of two or more chairs and also quick and easy release of the chairs whereby a minimum of time is required to set up and take down pre-arranged rows of chairs held together in alinement.

Another object of the invention is the provision of z clamp of the above character which is adapted to engage the leg portions of chairs which may be readily placed in position and quickly removed from its assembled position without tools through simple manual manipulations.

Another object of the invention is the provision of a clamp of the above character which is positive in its action, which is of simple construction, and which is inexpensive to manufacture.

Other objects and advantages of the invention will become apparent from the following detailed description taken in connection with the accompanying drawings, in which:

Figure 1 shows a pair of associated chairs held together by means of clamps embodying the present invention.

Figure 2 is an enlarged top view showing details of construction of a clamp.

Figure 3 is a back view of a clamp.

Figure 4 is a front view of a clamp.

Figure 5 is a side view of a clamp.

Referring now to the drawings, the inveniton is shown embodied in a clamping device for holding a pair of conventional folding chairs in fixed relation. While only two chairs are shown being held in fixed relation by two clamps herein, it is to be understood that any number of chairs may be held in fixed relation to each other by one or more clamping devices acting between any two adjacent chairs, and that each clamping device is assembled and operates in the same manner.

As best seen, the clamping device in this embodiment is arranged to engage a support member orleg 13 of onechair 12 and a leg orsupport member 14 of an adjacent chair. The details of the clamping device are best shown in Figures 2-5. In general the clamping device is comprised of a pair ofopposed members 16 and 17 having jaw portions, at each end, shaped to en-- gage thechair support members 13 and 14 respectively; apin 18 coacting with theopposed members 16 and 17 to hold the latter in assembled relation and constructed and arranged with thejaw members 16 and 17 to permit ready assembly and disassembly of the parts; andspring means 19 arranged to coact with themembers 16 and 17 and thepin 18 to bias the jaw members towards each other when the clamping device is in assembled position.

As best seen in Figure 2 the clamping member 16 has a central orbody portion 21 andend portions 22 and 23. Therein theend portion 22 has an arcuateinner face 24 2,821,762 Patented Feb. 4, 1958 shaped to conform to the peripheral surface of thecircular chair support 13 and theend portion 23 is provided with an innerarcuate surface 26 shaped to conform to the peperipheral surface of thesupport member 14. Themember 17 is comprised of a central orbody portion 27 andend portions 28 and 29. Theend portion 28 is formed with an arcuate inner surface 31 shaped to conform to the peripheral surface of thecircular chair support 13 and theend portion 29 is formed with an innerarcuate portion 32 shaped to conform to the peripheral surface of thecircular chair support 14. Themembers 16 and 17 when in a clamping position are arranged to be in opposed relation. Thus, when the clamping device is in assembled position theend portions 22 and 28 in effect define jaws grippingchair support 13 and theend portions 23 and 29 in effect define jaws for gripping thechair support 14.

Thepin 18 is mounted on themember 17 by being inserted through an opening 33 extending through thecentral portion 27 of theclamping member 17. The opening is of such shape that thepin 18 may be moved bodily relative to theclamping member 17. At one end the pin is formed with ahead 34 and at its opposite end the pin is formed with a reducedportion 36 which defines anannular shoulder 37 at its outer end. The reduced portion is shaped to be received in aslot 38 in the clamping member 16 opening on one face of the member 16, and theshoulder 37 coacts with the shoulders or walls 39 and 41 defining theslot 38 to hold theclamping members 16 and 17 in opposed relation.

The spring means 19 in this instance for biasing theclamping members 16 and 17 together is formed by a compression spring mounted on thepin 18 and disposed between thehead 34 of thepin 18 and theclamping member 17. Acotter pin 35 between themembers 16 and 17 holds thespring 19,member 17, and pin in assembled relation.

The operation of the clamping device is readily apparent, but may be summarized as follows:

Themember 17 together with thepin 18 and thespring 19 are placed in position so that themembers 13 and 14 are received in the jaw portions of the clamping member. A pressure is applied to the pin so that the latter is moved bodily relative to theclamping member 17 and thespring 19 as shown by dotted lines in Figure 5 is compressed. The clamping member 16 is then placed on the opposite side of themembers 13 and 14 and moved bodily relative to themember 17 so that the reducedportion 36 of thepin 18 is received in theslot 38 formed on the member 16. The pressure on thepin 18 is thereafter removed and the tension on thespring 19 acting through thepin 18 on themembers 16 and 17 biases the latter towards each other to positively grip thesupports 13 and 14 and positively hold the chairs in fixed relation to each other. When it is desired to separate the chairs it is only necessary to apply a pressure to thehead 34 of thepin 18 suflicient to overcome the bias of thespring 19 and bodily move the clamping member 16 relative to the member 17 a sufiicient distance so that theannular shoulder 37 becomes disengaged from the walls 39 and 41. The clamp is then free to be removed from thesupports 13 and 14 and the chairs can be readily taken apart. Where desired, the member 16 may be placed in position and thepin 18,member 17, and spring moved relative to member 16.

From the foregoing it is seen that the device can be readily applied and removed from chairs through simple manual manipulations without the use of tools. Furthermore this clamp can be readily manufactured. It is simple in operation, and while it has been shown herein as being applied to holding chairs in fixed relation with each other,

the members which are being held in fixed relatiom. Also, 5

Whilemembers 16 and 17 have been shown herein as ti 'lHL J- sohd members, ofany suita e materia 1i is o e an arstood that the members may also be formed from sheet metal folded to substantially the configuration shown.

I claim:

In a device for holding spaced supports, and the like, in fixed relation, the combination of a first clamping member having jaw portions at each end thereof shaped to en: gage said supports, a second clamping member in opposed relation. to said first, clamping member having second jaw portions at each end thereof and shaped to engage said spaced, supports: atpositions in opposition to said first jaw portions, said opposed jaw portions being, in spaced relation. when engaging saidmembers, one; of said members having an opening between said jaw portions, the other of said members having a. slot between said jaw portions opening on one edge to define spaced shoulders, a pin shaped to extend through said opening and said slot,

4 said pinhavinganenlarged head at one en sha mampulated, and having a reduced portiori at its end shaped to be received in said slot and to define an abutment to engage said shoulders defined by said slot on said other member to hold said members in assembled relation, and spring means acting between said pin and at mmitt n! tattltaultm m tllllll :1 force (raw/e0 References Cited in the file of this patent UNITED STATES PATENTS 1,059,636 Rankin Apr 22, 1913; 1,089,771 Kettering Mar. 10, 1,914, 2,637,081 Henrikson May 5, 1953 2,708,299 Stecher May 1,71,19 55, 2,712,167

Blanchard L July, 5, 1,955,;

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