US1619144A - Quick-action clamp - Google Patents

Description

E. H. M MILLAN QUICK ACTION CLAMP March 1 1927. 1,619,144

Filed Dec. 51, 1925 gwuemtoz r wedge cannot be accidentally lost but whereby the-wedge may be, if desired, removed;

Patented Mar. 1, 1927.

' UNITED i STA'TES" PATENT" 'OF FICIE.

EDWARD H. MC'MILLAN, OF OAKLAND, CALIFORNIA.

QUICK-ACTION CLAMP.

Application filed December '31, 1925. Serial No. 78,637.

This invention relates to clamps such as are used in applying or fastening'a curb iron to a curb form in concrete construction or other concrete work and particularly to a quick action clamp.

I An object of the invention is to provide- I a very simplequick acting clamp which is cheap to manufacture, which may be readily applied and removed, and which will not 'haveany parts thereon which can beseriously alfected by the cement after it has hardened, as is the case with thecoinnion screw clamp ordinarily used for holding curb irons in place against curb forms. 1

A further object is to provide a device of this kind including a wedge whereby the clamp may beplaced in operative engagement with the curb iron and curbform, and provide means whereby this wedge is so connected to the body" of the clamp that the l/Iy invention is illustrated in the accomconcrete curbs.

panying drawings, wherein Figure 1 is a transverse sectional view throu ing device applied thereto r Figure 2 is a side elevation of the outside mold wall and clamping device;

Figure 3 top plan view of the structure shown in Figure 2; 1

Figure 4 is a perspective view of the ha curbing mold showing my'clainpwedge. p p I V Referring to this drawing, it will be seen that I have illustrated the formsfor making These forms consist of the inner forin'10 and the outer form 11. Disposed against this outer form" 11" on the inside face thereof adjacent the upper edge is a curb iron 12, and an anchor bolt 13 has its head engaged with this protecting iron 12 and extends laterally therefrom and is then downwardly bent so as to extend'into' the space betweenthe curb forms l'O-land '11 and which is filled with t-heconcrete 1 1. The

lower edge of the outer curb form 11 is' downwardlyand outwardlycurved, as at 15,

so as to form the rounded gutter of the curb of aclamp formed of a body which is approximately U-shaped in cross section and comprises the straight transverse bar 16 and the downwardly extending leg 17 on the inside end of this bar. This leg is adapted to bear against the upper outside face 18 of the part 12. The opposite end of the body- 15 formed with the downwardly extending leg 19 which at its lower end is inwardly bent, that is, the extremity 20 is bent toward the opposite leg 17. Thus when this clamp is placed over the top of a form 11, a rec tangular space will be formed between the bodyof the clamp, the leg 19, the inwardly turned portion 20, and the form, and in this rectangular space a wedge 21 is adapted to be driven. This wedge may be of any suit able material as, for instance, hard wood. As this wedge is driven inward it draws the clamp laterally and draws the leg 17 against I the iron 12, holding this iron in proper position against the form and with relation to the concrete so that when the form 11 is withdrawn after the concrete has hardened, this curb iron 12 will be disposed in place at-the upper outside corner of the curbing 14:.

In order to prevent the accidental loss of the wedge 21, I have illustrated the under face of the wedge 21 as formed with a longitudinally extending slot '22 which is less in length than the total length of the wedge,

and I have illustrated the inwardly turned extremity 20 as being screw-threaded for the passage of a withdrawable pin in the form of a screw 23 which screws into the screwthreaded opening in the portion 20 and has a rounded extremity which fits within the groove 22. Thus when this screw is turned up it Wlll extend into the groove 22 and will prevent this wedge in any way being, re-

moved even when the clamp is detached'from the form 11'. This'prevents the wedge frombeing lost and renders it a unit with the clamp 16. y a p In the use of this. device, after a form has been placed, the iron 12is disposed at the clamps are then turned upward so that the leg 17 jams the plate or iron 12 against the inside face of the form' and holdsit firmly in place. The clamp 16, inasmuch as it rests upon the upper face of the form 11, constitutes a stop which aidsin positioning the curb iron 12 inasmuch as this curb iron may upper inner corner of the forrn and held in Y place by means of a plurality ofthe clamps formed of the portions 16, 17 and 19. These 2 be forced upward until its u per edge engages with the clam 16 and t en the clamp may be locked by riving in the wedge so that no particular skill need be used in placing the curb irons and roperly positioning them with relation to the curb. Of course, when the wedge becomes worn or should be come broken or it be desired to remove the wedge for any reason, the screw 23 may be released and the wedge taken out and a new one replaced, but normally this screw holds the wedge from detachment and at the same time allows it free longitudinal movement to a suflicient degree to cause the tightening of the clamp. The leg 19 has its inside face inclined complementarily to the inclined face ward.

of the wedge 21. Preferably this wedge has its inclined face disposed at a relatively great degree of inclination so as to secure rapid action when the wedge is forced in It will be seen that this device is inexpensiveto make, that it may be quickly adjusted to suit the work, that it is easily and quickly applied or removed, that it is particularly eflicient as a holding means, and that it is easily kept clean. Further it will be noted that it is of such construction that it will not mar the finished work and that there is no part which is seriously affected by any hard ened cement. Common screw clamps are ordinarily used for this purpose and these plied to holding a curb iron to a curb mold,

I do not wish to be limited to this use of the device as it might be used for other purposes. Neither do I wish to be limited to the exact details of construction as illustrated. as these might be changed and modified in many minor ways without departing from the spirit of the invention asudefincd in the appended claims. 1 y y I claim 3 i 1. A clamp for the purpose described in cluding abody having an inner, downwardly extending leg and an outer downwardly extending leg, a wedgedisposed inward of the of the longitudinal movement of the wedge.

2. A clamp of the character described ineluding a body having a downwardly extending leg on its inner end and a downwardly extending leg on its outer end, the lower end of this leg being inwardly turned toward the first named leg, a wedge disposed immediately above this inwardly turned end and between it and the bod or the clamp, the

wedge having a longitu inally extending recess, and a pin carried by the clamp and ex tending into said recess, the recess being less in length than the wedge.

3. A clamp of the character described comprising a straight body adapted to be dis posed upon the top of a mold board and having at one end a downwardly extending leg, the opposite end of the body having a downwardly extending leg, the lower extremity of which is inwardly turned toward the first named le :1 screw-threaded pin extending upward tirough said inwardly turned extremity, and a wedge disposed between the inwardly turned extremity and the body of the clamp and bearing against the adjacent leg, said wedge having a longitudinally extending groove less in lengththan the wedge and closed at its opposite ends into which said pin extends.

4. A clamping scribed including a clamping body adapted to extend'over and embrace a mold board and a curb iron, a wedge operatively engaging said body and adapted-toengage the outer face of the mold board and when driven home urging the curb iron against the mold board, the wedge beingformed with a longitudinally extending recess, and the body of the clamp havingapin engaging said rccess. the recess being less in length than the length of the wedge. said pin and wedge permitting free longitudinal movement of thewedge but holdingthe wedge against accidental displacement from the body of the clamp.

In testimony whereof I hereunto afiix my signature. a y

. EDWARD H. MoMILLAN.

device the character de-

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