US1643838A - Concrete-column clamp - Google Patents

Description

E. T. CORBIN coucnm'n commu cm1 rsepa. 27,1927. -.1,643,8 38.

Filed Nov. 17. 1926 2 Sheets-Sheet 1 Tnx Patented Sept. 27, 1927.

EMMETT T. CORBIN, OF HAMILTON, OHIO.

CONCRETE-COLUMN CLAMP.

Application led November 17, 1926. Serial No. 148,908.

This invention relates to certain new and useful improvementsl vin concrete column clamps and hasv for one o its objects to pro# vide a clainptor tightening a metallic strap or band in 'binding relation with a concrete mold or form `tor a column.

Another object of the invention is to provide 'a clamp ot the above type wherein the ends of the metallic straps orbands are engaged with the outer ends ot a pair of clamping members, with-a cam lever for relatively shitting the two yclamping members for placing the bandv in binding and enclosingrela-l tions with a column form of mold.

A further object ot the invention is to provide in connection with a concrete column clamp of the above type, a cam lever forming a part of the clamping mechanism with a cam formation upon each end thereof for selective use whereby lthe cam lever may assume a diiierent position with respect to the form or mold whenl moved to its clamping position i. e., to extend either perpendiculai'ly to the mold or lie parallel therewith.

lVith the above and other objects in view that will become apparent as thenature of the invention is better understood, the same consists in the novel form, 'combination and arrangement of parts and in the Vdetails of construction hereinafter more fully described, shown in the accompanying drawings and claimed. .Y

In the accompanying drawings, wherein like reference characters indicate corresponding parts throughout the several views,

Figure 1 is a fragmentary horizontal sectional view ot a mold or form for a'concrete column with the clamping device operatively associated therewith, showing the two parts of the clamping device with which the ends of the metallic strap or band are' temporarily attached and the cam lever for relatively shitting the two clamping members;

.Figure 2 is atop plan view of the clamping device with the mold ragmentarily illustratedin side elevation;

'Figure Sis a detail sectional view takenk ou line" 3 3 of Figure 1 showing the two inter-engaged clamping members;

yFigure 4 is a detail sectional view taken Von line 4 4 of Figure 1 .showing the cam lever detachably engaged with one of the,

clamping members with the cam portion thereof disposed for engagement with an abutment on the Aother clamping member;

ing 3 Figure `5 is a perspective viewof one of the clamping members; l y

Figure 6 is a perspective View of the other clamping member; and

Figure 7 is a perspective view, partly broken away of the cam lever showing a, camY portion at each end thereof. p

While the clamping device is capable of association with a concrete column of various cross-sectional configurations, the same is herein illustrated juxtaposed toy one side of a rectangular form or mold, and as shown in Figures 1 and 2, the sides of the mold are formed of inter-engaged tongue and giooved boards 1 thatrare to be retained in position by the batten 2 that is placed in front engagement with the boards 1 with the ends of the hatten overlying the outer edges of the end boards. The concrete'fillis confined within the matched boards 1. l Y

Thev gist of this invention resides inl the provision of a clamping device for securing in enclosing and binding relations, a metali lic vstrap or band 4. around the `mold, the band 4 being iirst stretched-or fully extended in binding relations with respect to the form with the ends of the band secured in holding position by'a nail or pin 22 through the clamping device.

Theclamping device comprises two clamping members and a cam lever with the ends of the band primarily engaged with t-he outer ends of the clampin members. One of the clamping members s own in detail in Figure 5 comprises a base plate 5 with a rectangular .frame 4at one end projecting perpendicularly therefrom that is formed by bending. the end of the base plate to provide spaced vertical walls 6 and 7, a horizontal top wall 8 forming a space 9 between the vertical walls while said vertical walls have aligned openings 10 therein. The

upper and lower ends yof the opening 10 in g the vertical wall 6 arerespectively rtapered 100 upwardly and downwardly as at 11 to acilitate passage through the openings 10. The outer end of the base plate 5 is provided with anopening 12through which one end of the band 4 is passed as shown in Figures 105 size to freely pass through the openings '10 11.0

ktid() in the vertical walls 6 and 7 with two parallel rows of spaced openings 14 formed therein. :One end ot the 'leg 13 is twisted at right angles to form a head 15 that has an opening 16 therein for the passage of the other end ot` the band 4. The two clamping members are assembled as shown in Figures 1 and 2 with the leg 13 passed through the openings 10 formed in the rectangular irame at one end ot the base plate with the opposite ends ot the band 4 passed through the openings 12 and 16 of the clamping members and when so disposed, a clamping lever is cooperatively engaged with the two clamping members and operates to cause the ends of the band to be drawn toward each other.

The clampinglever 17 liascam portions- 18 and 19 at opposite ends ther-cot with oppositely directed pins 2O and 21 carried by each cam portion respectively. n

As shown in Figure 1, the leg 13 ot one clamping member is passed through the openings in the rectangular Vtrame carried by the ends of the base plate 5 ot the otherclamping member while the endsvot the band 4.are passed through the openings 1 2 and ,1Grin the clampingmembers and extend over and above the ends ot ythe batten 2. The vpin 2Q projecting trom the cani portion 18 ot the clamping Alever 17 is inserted into one ot the lower openings .14m the leg 13 with ther cam portion 18 ofthe lever disposed tor engagement with the adjacent vertical wall 7. The outer end ot the clamping'lever 17 is then raised and as the cam portion 18 engages the wall 7, the outerends of the two clamping members are drawn toward each other together withthe ends of the band 4 and lwhen the vdesired tension has been placed upon the band, and to make the same tast, a pin or nail 22 shall be inserted in the space 9 through one of the openingsv 14, so as to permit removal lot the lever 17 leaving` allparts ot the clamping device in position until the concrete has been pouredl and set, and retention ot the mold boards 1 and batten 2 in position to allow steafdying ot the concrete filling 3. `When the cam portion 18 ot the clamping lever is utilized, the clamping lever assumes a perpendicular position with respect to the batten vwhen the same has been moved to its clamping position and when it is desired to have Vthe clamping lever 17 assume a yposition parallel'with the batten when in its clamping position, the opposite end or cam portion 19-of the lever is employed. rIhe pin 21 carried by the cam portion 19 is inserted in one ot the openings 14 of the upper row in the leg 13 and by moving the outer or cam portionlS of the. clamping lever in a direction toward the batten 2, the ends of the two clamping members are similarly drawn toward each otherA for placing the retaining band 4 under tension. The

pins 20 and 21 extend from opposite sides of the clamping lever to permit the latter `to be disposed at either side of the leg'13 as will at once be appreciated Jfrom an inspection of Figures 2 and 4.

While there is herein shown and described the preferred embodiment of the present invention it is nevertheless to be understood that minor changes may be made therein without departing from the spirit and scope ot the invention as claimed.

What I claim as new is 1. In a concrete column clamp, a pair of lapping clamping members constructed tor temporary attachment of the ends of a band and a cam lever detachably connected to one clamping member and engaged withy the other clamping member at the lapping parts to cause separating movements of the lever engaged parts of the members and movements of the band ends toward each other;

2. In a concrete column clamp, a-pair of clamping members constructed tor temporary'attachment ot the ends of a band, said members lapping each other and an abutment-on the lapping end oi one member, and

a cam leverl detachably connected lto one` movements therebetween and movements of the band ends toward each other, and said lever having a cam portion at eachv end, the clamping lever lying adjacent the column when one cam end is active and being spaced from the column when the other cam end is active.

4. In a concrete column clamp, ak pair of clamping members constructed for temporary attachment of the ends of a band, said members being ,interengaged and an abutment on one member, anda cam lever detachably connected to one member and moved into engagement with the abutment on the other member to cause relative movements between the two members todraw the band ends toward each other, and said lever having a cam portion at each end, the clamping lever lying adjacent' the column'wh'en one cam end is active and being spaced from the column when the other cam end is active.

5. Ina concrete column clamp, a pair of clamping members constructed for temporary attachment ofthe ends of a band and a cam lever detachably connected to one clamping member and engaged with the other clamping member to cause relative movements therebetween and movements of the band ends toward each other, the connection between the lever and clamping member including a pin carried by the lever and one of said clamping members having series of openings therein for the `selective reception of the pin.

6. In a concrete column clamp, a pair of clamping members constructed for temporary attachment of the ends of a band, said members being interengaged and an abutment on one member, a cani lever detachably connected to one member and moved into engagement with the abutment on the other member to cause relative movements between the two members to draw the band ends toward each other, the connection between the lever and clamping member including a pin carried by the lever, and one ot said clamping members having series of openings therein for the selective reception of the pin.

7. Ina concrete column clamp, a pair of clamping members constructed 4for temporary attachment of the ends ot a band, said members being interengaged and an abut ment on one member, a cam lever detachably connected to one member and moved into engagement with the abutment on thev other member to cause relative movements between the two members to draw the band ends toward each other, the engagement between said members including a housing carried by one member forming an abutment 'for the cam lever and having` van opening there-V through, and the other member having a leg extending through the housing opening.

8, In a concrete column clamp, a pair of clamping members constructed for temporary attachment of the ends of a band, said members being vinterengaged and an abutment on one member, a cam lever detachably connected to one member and moved into engagement with the abutment on the other member to cause relative movements between the two members to draw the band ends toward each other, said lever having a cam portion at each end, the clamping lever lying adjacent the column when one cani yend is active and being spaced from the column when the other cam end is active, the engagement between said members including a housing carried by one member forming an abutment tor the cam lever and having an 'opening therethrough, and the other niember having a leg extending through the housing opening.

9. In a concrete column clamp, a pair of clamping members constructed for interiitting relatively sliding relations, the outer end of each clamping member adapted to have a band end attached thereto, and a cam -lever detachably engaged with the clamping members adjacent the interengaged partsA lever'separates the engaged part-s and moves the band ends toward eachother.

In testimony whereof I affix my signature.

EMMETT T. CORBIN.

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