US1875136A

US1875136A - Spreader clamp

Info

Publication number: US1875136A
Application number: US397204A
Authority: US
Inventors: Ernest A Podd
Original assignee: Individual
Current assignee: Individual
Priority date: 1929-10-04
Filing date: 1929-10-04
Publication date: 1932-08-30
Anticipated expiration: 1949-08-30

Description

Aug. 30, 1932.

E. A. PODD SPREADER CLAMP Filed Oct. 4, 1929 4 I ll .PATEN FFEC ERNEST A. PODD, OF HOUSTON, TEXAS SPREADER CLAMP Application filed October 4, 1929. Serial No. 397,204.

This invention relates to new and useful apart as clearly shown in Figure 1. Adjacent improvements in a spreader clamp. the

upright studding

2, 2 the side walls 1 One object'of the invention is to provide a are provided with openings as 4 which are spreader clamp of the character described transversely aligned and which also align 5 specially adapt-edto be used in construction With the

spaces

5, 5 between the upper and Us work for holding parts together and a parlower timbers as 3, 3 as illustrated in Figures ticular purpose of the invention is to provide 1 and 2. a clamp of the character described specially A construction in connection with which useful in connection with falsework, for the spreader clamp may be used has been .1 holding the sides of concrete forms in proper above described; a preferred form of the no position to receive the plastic concrete and construction and a method of use of the hold the same until it sets and hardens suliispreader clamp itself will now be described ciently to support itself. and explained. The body of the clamp con- This type of spreader clamp is particularly sists of a long strip 6 of sheet metal or band 15 useful for the purpose of maintaining in poiron whose ends are doubled back and riv- 6; sition forms for moulding concrete walls, eted or otherwise secured to the main body beams, girders and the like, although it is cathereof forming the

end loops

7,7, said loops pable of general application and use for holdbeing of the required length depending upon ing parts in a desired relation in construction the character of work being constructed.

0 work. The main body of the clamp has two later- 7'; With the above and other objects in view, ally'turned

spreader lugs

8, 8 either formed the invention has particular relation to cerintegrally therewith or welded or riveted tain novel features of construction, arrangethereto. These spreader lugs are placed a ment of parts and use, an example of which distance apart over all, equal to the thick- 5 is given in this specification and illustrated ness of the concrete beam or wall to be formed 7:;

in the accompanying drawing wherein and they are located equal distances from the Figure 1 shows a fragmentary vertical seclongitudinal central line of such beam, or tional view of a form maintained in position wall. When the false work and the side by the type of preader clamp described forms 1, l are erected in place, the clamp 6 39 Figure 2 shows a fragmentary horizontal may be inserted through the openings 4: and so sectional view thereof. spaces 5 with the

loops

7, 7 extending out be- Figure3 shows across sectional view taken yond the timbers 3 and the clamp is then on the line 33 of Figure 2, and forced over to one side of the openings l so Figure 4 shows the clamp as employed in that the lugs 8 will engage the inner sides of clamping together adjacent parts in general the side Walls 1 ofthe form being constructed. construction work. The openings 4 are then plugged. up by means Referring now more particularly to the ofplugs 9 formed of cork or other suitable drawing wherein like numerals of reference material so that the plastic material will not A designate similar parts in each of the figures, escape from the form. Suitable washers 1O the numerals 1, 1 designate the opposite sides are then fitted over the

loops

7, 7 against the i of the concrete form into which the plastic timbers 3 and Wedges 11, 11 are then driven concrete is to be poured and moulded. This through the outer ends of the loops and bear form will. have the usual bottom (not shown) against said washers 10 and serve to hold the r to receive the poured concrete and to support clamp securely in place. It is to be underthe same. Abutting the outer sides of the stood that a number of clamps will be used sa-id sides 1, 1 of the form are the vertical in the construction and they will be spaced

studding

2, 2 and against the outer sides of apart the required distance so as to securely the studding are the horizontally disposed sustain the load to which the form is sub timbers, or waling, 3, 3 preferably arranged jected.

in pairs, the timbers of each pair being spaced When the wedges 11 are driven securely in W place the lugs 8 will be drawn tightly against draw theclamp securely the inner sides of the walls 1, 1 thus spreading, and holding, the form walls the required distance apart and there holding them until the clamps are released and removed after the concrete has set.

In order to dismantle the form, the wedges 11 may be easily driven out and the false work and the form removed and the looped ends of the strip 6 broken or cut off flush with the face of the moulded beam, or wall. In the form shown in Figure 4 the clamp 6 is shown for securing together adjacent parts. In this form the lugs Swill be dispensed with and the clamp be drawn around the parts to be secured together with end loops 7', 7 overlapping, and a wedge 11 driven through said over lapped loops to around the parts to be connected.

The drawing and descriptiondisclose What is now considered to be preferred forms of the invention by way of illustration but it is obvious that various mechanical changes and adaptations may be made in the mechanical and keys through said loops to engage the outer sides of the waling.

4. The combination with a form'having I side walls provided with openings and false work for supporting side walls and having .lug being spaced inwardly-from the corresponding keyway' a sufficient distance to engage the inner side of the corresponding side wall. v p I In testimony whereof nameto this specification.

ERNEST A. PODD.

structure without. departing from the prinv ciple of the invention as broadly defined by the appended claims. V 1

What I claim is: I I 1. The combination with a form and false work supporting the form, said form having side openings, of a tie member fitted'through saidopenings, end loops 'on'the tie, a lug on the tie spaced inwardly from eachjloop and of a'lengthless than the diameter of the openings, wedges through said loops in engagementfwith the falsework, plugs in said openings adjacent the tieand substantially clos- V ing said openings.

2. The combination with a form and false work supporting the form,said' form having 'sideopenings, of a tie member fitted through said openings, end loops on'the tie, wedges through said loops in engagement with the havejsigned raise work, plugs in saidopenings ad aeent the tie and substantially closing said open ings, and abutments on the tie engagingthe inner sides of the adj acentwalls of the form and being ofa length less than the'diamete-r of the openings.

3. The combination with a form having I side walls provided with openings and false 1 work having studdingspaced from said side Walls, of a clamp for connecting said waling and comprising. a single strip of material forming a tie member, the ends of the strip, being'doubled back forming end loops, the

doubled back portions lying against the main body of the stripand being secured thereto,

the free ends of said doubled backportions v being outwardly turned forming lugs of dimensionsto through said openings,each

lug being spaced inwardly an appreciable distance from the corresponding loop to engage I the inner side of the corresponding sidewall